Heres a list of ping services for wordpress. My first contribution

Use MaxBlogPress Ping Optimizer or builtin WP plugin to ping ur blogs.

Code:

http://rpc.pingomatic.com/ 
http://rpc.autopinger.com 
http://1470.net/api/ping 
http://www.a2b.cc/setloc/bp.a2b 
http://api.feedster.com/ping 
http://api.moreover.com/RPC2 
http://api.moreover.com/ping 
http://api.my.yahoo.com/RPC2 
http://api.my.yahoo.com/rss/ping 
http://www.bitacoles.net/ping.php 
http://bitacoras.net/ping 
http://blogdb.jp/xmlrpc 
http://www.blogdigger.com/RPC2 
http://blogmatcher.com/u.php 
http://www.blogoole.com/ping/ 
http://www.blogoon.net/ping/ 
http://www.blogpeople.net/servlet/weblogUpdates 
http://www.blogroots.com/tb_populi.blog?id=1 
http://www.blogshares.com/rpc.php 
http://www.blogsnow.com/ping 
http://www.blogstreet.com/xrbin/xmlrpc.cgi 
http://blog.goo.ne.jp/XMLRPC 
http://bulkfeeds.net/rpc 
http://coreblog.org/ping/ 
http://www.lasermemory.com/lsrpc/ 
http://mod-pubsub.org/kn_apps/blogchatt 
http://www.mod-pubsub.org/kn_apps/blogchatter/ping.php 
http://www.newsisfree.com/xmlrpctest.php 
http://ping.amagle.com/ 
http://ping.bitacoras.com 
http://ping.blo.gs/ 
http://ping.bloggers.jp/rpc/ 
http://ping.blogmura.jp/rpc/ 
http://ping.cocolog-nifty.com/xmlrpc 
http://ping.exblog.jp/xmlrpc 
http://ping.feedburner.com 
http://ping.myblog.jp 
http://ping.rootblog.com/rpc.php 
http://ping.syndic8.com/xmlrpc.php
http://ping.weblogalot.com/rpc.php 
http://ping.weblogs.se/ 
http://pingoat.com/goat/RPC2 
http://www.popdex.com/addsite.php 
http://rcs.datashed.net/RPC2/ 
http://rpc.blogbuzzmachine.com/RPC2 
http://rpc.blogrolling.com/pinger/ 
http://rpc.icerocket.com:10080/ 
http://rpc.technorati.com/rpc/ping 
http://rpc.weblogs.com/RPC2 
http://www.snipsnap.org/RPC2 
http://trackback.bakeinu.jp/bakeping.php 
http://topicexchange.com/RPC2 
http://www.weblogues.com/RPC/ 
http://xping.pubsub.com/ping/ 
http://xmlrpc.blogg.de/ 
http://bblog.com/ping.php 
http://blogsearch.google.com/ping/RPC2 
http://xping.pubsub.com/ping 
http://pingoat.com/goat/RPC2/ 
http://pingqueue.com/rpc/ 
http://www.bloglines.com/ping 
http://rpc.newsgator.com/ 
http://rpc.pingomatic.com 
http://www.newsisfree.com/RPCCloud 
http://xmlrpc.blogg.de
api.moreover.com/RPC2
api.my.yahoo.co.jp/RPC2
api.my.yahoo.com/RPC2
audiorpc.weblogs.com/RPC2
blog.goo.ne.jp/XMLRPC
blogpeople.net/ping
blogsearch.google.ae/ping/RPC2
blogsearch.google.at/ping/RPC2
blogsearch.google.be/ping/RPC2
blogsearch.google.bg/ping/RPC2
blogsearch.google.ca/ping/RPC2
blogsearch.google.ch/ping/RPC2
blogsearch.google.cl/ping/RPC2
blogsearch.google.co.cr/ping/RPC2
blogsearch.google.co.hu/ping/RPC2
blogsearch.google.co.id/ping/RPC2
blogsearch.google.co.il/ping/RPC2
blogsearch.google.co.in/ping/RPC2
blogsearch.google.co.it/ping/RPC2
blogsearch.google.co.jp/ping/RPC2
blogsearch.google.co.ma/ping/RPC2
blogsearch.google.co.nz/ping/RPC2
blogsearch.google.co.th/ping/RPC2
blogsearch.google.co.uk/ping/RPC2
blogsearch.google.co.ve/ping/RPC2
blogsearch.google.co.za/ping/RPC2
blogsearch.google.com.ar/ping/RPC2
blogsearch.google.com.au/ping/RPC2
blogsearch.google.com.br/ping/RPC2
blogsearch.google.com.co/ping/RPC2
blogsearch.google.com.do/ping/RPC2
blogsearch.google.com.mx/ping/RPC2
blogsearch.google.com.my/ping/RPC2
blogsearch.google.com.pe/ping/RPC2
blogsearch.google.com.sa/ping/RPC2
blogsearch.google.com.sg/ping/RPC2
blogsearch.google.com.tr/ping/RPC2
blogsearch.google.com.tw/ping/RPC2
blogsearch.google.com.ua/ping/RPC2
blogsearch.google.com.uy/ping/RPC2
blogsearch.google.com.vn/ping/RPC2
blogsearch.google.com/ping/RPC2
blogsearch.google.de/ping/RPC2
blogsearch.google.es/ping/RPC2
blogsearch.google.fi/ping/RPC2
blogsearch.google.fr/ping/RPC2
blogsearch.google.gr/ping/RPC2
blogsearch.google.hr/ping/RPC2
blogsearch.google.ie/ping/RPC2
blogsearch.google.in/ping/RPC2
blogsearch.google.it/ping/RPC2
blogsearch.google.jp/ping/RPC2
blogsearch.google.lt/ping/RPC2
blogsearch.google.nl/ping/RPC2
blogsearch.google.pl/ping/RPC2
blogsearch.google.pt/ping/RPC2
blogsearch.google.ro/ping/RPC2
blogsearch.google.ru/ping/RPC2
blogsearch.google.se/ping/RPC2
blogsearch.google.sk/ping/RPC2
blogsearch.google.tw/ping/RPC2
blogsearch.google.us/ping/RPC2
feedsky.com/api/RPC2
hamo-search.com/ping.php
holycowdude.com/rpc/ping/
newsblog.jungleboots.org/ping.php
ping.blogoon.net/
ping.blogs.yandex.ru/RPC2
ping.fc2.com/
ping.feedburner.com/
ping.kutsulog.net/
ping.myblog.jp/
ping.namaan.net/rpc
ping.snap.com/ping/RPC2
ping.syndic8.com/xmlrpc.php
ping.weblogalot.com/rpc.php
ping.wordblog.de/
r.hatena.ne.jp/rpc
rpc.bloggerei.de/ping/
rpc.blogrolling.com/pinger/
rpc.icerocket.com:10080/
rpc.pingomatic.com
rpc.reader.livedoor.com/ping
rpc.technorati.com/rpc/ping
rpc.technorati.jp/rpc/ping
rpc.twingly.com/
rpc.weblogs.com/RPC2
wasalive.com/ping/
www.blogpeople.net/servlet/weblogUpdates
xmlrpc.blogg.de
xping.pubsub.com/ping/
zhuaxia.com/rpc/server.php

Amazing collection, I just used it and looking for list, good job.

my results for this have not been so good. I loaded up the ping optimizer plugin and put in the list. here are my ping results so far:

Code:

      » http://rpc.pingomatic.com/ was successfully pinged (extended format)
      » http://1470.net/api/ping could not be pinged. Error message: "transport error - HTTP status code was not 200"
      » http://www.a2b.cc/setloc/bp.a2b could not be pinged. Error message: "parse error. not well formed"
      » http://api.feedster.com/ping could not be pinged. Error message: "transport error - could not open socket: 110 Connection timed out"
      » http://api.moreover.com/RPC2 was successfully pinged (extended format)
      » http://api.moreover.com/ping could not be pinged. Error message: "parse error. not well formed"
      » http://api.my.yahoo.com/RPC2 was successfully pinged (extended format)
      » http://api.my.yahoo.com/rss/ping could not be pinged. Error message: "transport error - HTTP status code was not 200"
      » http://www.bitacoles.net/ping.php could not be pinged. Error message: "parse error. not well formed"
      » http://bitacoras.net/ping could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution"
      » http://blogdb.jp/xmlrpc could not be pinged. Error message: "transport error - could not open socket: 111 Connection refused"
      » http://www.blogdigger.com/RPC2 was successfully pinged
      » http://blogmatcher.com/u.php could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution"
      » http://www.blogoole.com/ping/ could not be pinged. Error message: "transport error - HTTP status code was not 200"
      » http://www.blogoon.net/ping/ could not be pinged. Error message: "transport error - could not open socket: 111 Connection refused"
      » http://www.blogpeople.net/servlet/weblogUpdates was successfully pinged (extended format)
      » http://www.blogroots.com/tb_populi.blog?id=1 could not be pinged. Error message: "transport error - could not open socket: 111 Connection refused"
      » http://www.blogshares.com/rpc.php could not be pinged. Error message: "transport error - HTTP status code was not 200"
      » http://www.blogsnow.com/ping could not be pinged. Error message: "parse error. not well formed"
      » http://www.blogstreet.com/xrbin/xmlrpc.cgi could not be pinged. Error message: "transport error - HTTP status code was not 200"
      » http://blog.goo.ne.jp/XMLRPC could not be pinged. Error message: "transport error - HTTP status code was not 200"
      » http://bulkfeeds.net/rpc could not be pinged. Error message: "transport error - could not open socket: 110 Connection timed out"
      » http://coreblog.org/ping/ could not be pinged. Error message: "transport error - HTTP status code was not 200"
      » http://www.lasermemory.com/lsrpc/ could not be pinged. Error message: "transport error - HTTP status code was not 200"
      » http://mod-pubsub.org/kn_apps/blogchatt could not be pinged. Error message: "transport error - HTTP status code was not 200"
      » http://www.mod-pubsub.org/kn_apps/blogchatter/ping.php could not be pinged. Error message: "transport error - could not open socket: 110 Connection timed out"
      » http://www.newsisfree.com/xmlrpctest.php could not be pinged. Error message: "transport error - HTTP status code was not 200"
      » http://ping.amagle.com/ could not be pinged. Error message: "parse error. not well formed"
      » http://ping.bitacoras.com could not be pinged. Error message: "El ping no es válido porque tu bitácora no figura en el directorio de Bitacoras.com, pero puedes darte de alta manualmente en http://bitacoras.com. Gracias por interesarte."
      » http://ping.blo.gs/ could not be pinged. Error message: "transport error - HTTP status code was not 200"
      » http://ping.bloggers.jp/rpc/ was successfully pinged
      » http://ping.blogmura.jp/rpc/ could not be pinged. Error message: "transport error - HTTP status code was not 200"
      » http://ping.cocolog-nifty.com/xmlrpc could not be pinged. Error message: "transport error - HTTP status code was not 200"
      » http://ping.exblog.jp/xmlrpc could not be pinged. Error message: "transport error - HTTP status code was not 200"
      » http://ping.feedburner.com was successfully pinged (extended format)
      » http://ping.myblog.jp was successfully pinged (extended format)
      » http://ping.rootblog.com/rpc.php could not be pinged. Error message: "transport error - HTTP status code was not 200"
      » http://ping.syndic8.com/xmlrpc.php was successfully pinged (extended format)
      » http://ping.weblogalot.com/rpc.php was successfully pinged (extended format)
      » http://ping.weblogs.se/ could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » http://pingoat.com/goat/RPC2 could not be pinged. Error message: "parse error. not well formed"
      » http://www.popdex.com/addsite.php could not be pinged. Error message: "parse error. not well formed"
      » http://rcs.datashed.net/RPC2/ could not be pinged. Error message: "transport error - HTTP status code was not 200"
      » http://rpc.blogbuzzmachine.com/RPC2 was successfully pinged
      » http://rpc.blogrolling.com/pinger/ could not be pinged. Error message: "transport error - HTTP status code was not 200"
      » http://rpc.icerocket.com:10080/ was successfully pinged
      » http://rpc.technorati.com/rpc/ping was successfully pinged (extended format)
      » http://rpc.weblogs.com/RPC2 was successfully pinged (extended format)
      » http://www.snipsnap.org/RPC2 could not be pinged. Error message: "transport error - HTTP status code was not 200"
      » http://trackback.bakeinu.jp/bakeping.php could not be pinged. Error message: "transport error - could not open socket: 110 Connection timed out"
      » http://topicexchange.com/RPC2 was successfully pinged (extended format)
      » http://www.weblogues.com/RPC/ could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution"
      » http://xping.pubsub.com/ping/ was successfully pinged (extended format)
      » http://xmlrpc.blogg.de/ could not be pinged. Error message: "parse error. not well formed"
      » http://bblog.com/ping.php was successfully pinged (extended format)
      » http://blogsearch.google.com/ping/RPC2 was successfully pinged (extended format)
      » http://xping.pubsub.com/ping was successfully pinged (extended format)
      » http://pingoat.com/goat/RPC2/ could not be pinged. Error message: "parse error. not well formed"
      » http://pingqueue.com/rpc/ could not be pinged. Error message: "transport error - HTTP status code was not 200"
      » http://www.bloglines.com/ping was successfully pinged (extended format)
      » http://rpc.newsgator.com/ could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » http://rpc.pingomatic.com was successfully pinged (extended format)
      » http://www.newsisfree.com/RPCCloud could not be pinged. Error message: "transport error - HTTP status code was not 200"
      » http://xmlrpc.blogg.de could not be pinged. Error message: "parse error. not well formed"
      » api.moreover.com/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » api.my.yahoo.co.jp/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » api.my.yahoo.com/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » audiorpc.weblogs.com/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blog.goo.ne.jp/XMLRPC could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogpeople.net/ping could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.ae/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.at/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.be/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.bg/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.ca/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.ch/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.cl/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.co.cr/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.co.hu/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.co.id/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.co.il/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.co.in/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.co.it/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.co.jp/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.co.ma/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.co.nz/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.co.th/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.co.uk/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.co.ve/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.co.za/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.com.ar/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.com.au/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.com.br/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.com.co/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.com.do/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.com.mx/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.com.my/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.com.pe/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.com.sa/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.com.sg/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.com.tr/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.com.tw/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.com.ua/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.com.uy/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.com.vn/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.com/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.de/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.es/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.fi/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.fr/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.gr/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.hr/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.ie/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.in/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.it/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.jp/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.lt/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.nl/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.pl/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.pt/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.ro/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.ru/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.se/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.sk/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.tw/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » blogsearch.google.us/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » feedsky.com/api/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » hamo-search.com/ping.php could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » holycowdude.com/rpc/ping/ could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » newsblog.jungleboots.org/ping.php could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » ping.blogoon.net/ could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » ping.blogs.yandex.ru/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » ping.fc2.com/ could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » ping.feedburner.com/ could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » ping.kutsulog.net/ could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » ping.myblog.jp/ could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » ping.namaan.net/rpc could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » ping.snap.com/ping/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » ping.syndic8.com/xmlrpc.php could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » ping.weblogalot.com/rpc.php could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » ping.wordblog.de/ could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » r.hatena.ne.jp/rpc could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » rpc.bloggerei.de/ping/ could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » rpc.blogrolling.com/pinger/ could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » rpc.icerocket.com:10080/ was successfully pinged
      » rpc.pingomatic.com could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » rpc.reader.livedoor.com/ping could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » rpc.technorati.com/rpc/ping could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » rpc.technorati.jp/rpc/ping could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » rpc.twingly.com/ could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » rpc.weblogs.com/RPC2 could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » wasalive.com/ping/ could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » www.blogpeople.net/servlet/weblogUpdates could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » xmlrpc.blogg.de could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » xping.pubsub.com/ping/ could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"
      » zhuaxia.com/rpc/server.php could not be pinged. Error message: "transport error - could not open socket: 0 php_network_getaddresses: getaddrinfo failed: Name or service not known"

It could be your ping program, google blogs should work...

Here is the result from pingler.com

Code:

rpc.pingomatic.com/ - Pings being forwarded to 12 services!
rpc.autopinger.com - ?
1470.net/api/ping - ?
www.a2b.cc/setloc/bp.a2b - ?
api.feedster.com/ping - ?
api.moreover.com/RPC2 - Thanks for the ping! The update to Free%20Sex%20Blog has been updated in our database. We used parameters - weblogname = Free%20Sex%20Blog, weblogurl = http://mysexsite.org, changesurl = http://mysexsite.org, categoryname = none
api.moreover.com/ping - ?
api.my.yahoo.com/RPC2 - Unable to process
api.my.yahoo.com/rss/ping - ?
www.bitacoles.net/ping.php - ?
bitacoras.net/ping - ?
blogdb.jp/xmlrpc - ?
www.blogdigger.com/RPC2 - ?
blogmatcher.com/u.php - ?
www.blogoole.com/ping/ - ?
www.blogoon.net/ping/ - ?
www.blogpeople.net/servlet/weblogUpdates - Thanks for the ping.
www.blogroots.com/tb_populi.blog?id=1 - ?
www.blogshares.com/rpc.php - ?
www.blogsnow.com/ping - ?
www.blogstreet.com/xrbin/xmlrpc.cgi - ?
blog.goo.ne.jp/XMLRPC - Thanks for the ping.
bulkfeeds.net/rpc - ?
coreblog.org/ping/ - ?
www.lasermemory.com/lsrpc/ - ?
mod-pubsub.org/kn_apps/blogchatt - ?
www.mod-pubsub.org/kn_apps/blogchatter/ping.php - ?
www.newsisfree.com/xmlrpctest.php - ?
ping.amagle.com/ - ?
ping.bitacoras.com - ?
ping.blo.gs/ - ?
ping.bloggers.jp/rpc/ - Thanks for the ping.
ping.blogmura.jp/rpc/ - ?
ping.cocolog-nifty.com/xmlrpc - ?
ping.exblog.jp/xmlrpc - ?
ping.feedburner.com - Ok
ping.myblog.jp - Thanks for the Ping!!
ping.rootblog.com/rpc.php - ?
ping.syndic8.com/xmlrpc.php - Thanks!
ping.weblogalot.com/rpc.php - Success! Thank you for your ping.
ping.weblogs.se/ - ?
pingoat.com/goat/RPC2 - ?
www.popdex.com/addsite.php - ?
rcs.datashed.net/RPC2/ - ?
rpc.blogbuzzmachine.com/RPC2 - Please use the Pingshot service to ping us
rpc.blogrolling.com/pinger/ - ?
rpc.icerocket.com:10080/ - ?
rpc.technorati.com/rpc/ping - Thanks for the ping
rpc.weblogs.com/RPC2 - Thanks for the ping.
www.snipsnap.org/RPC2 - ?
trackback.bakeinu.jp/bakeping.php - ?
topicexchange.com/RPC2 - weblogUpdates methods disabled due to too much spam
www.weblogues.com/RPC/ - ?
xping.pubsub.com/ping/ - Thanks for the ping.
xmlrpc.blogg.de/ - ?
bblog.com/ping.php -
blogsearch.google.com/ping/RPC2 - Thanks for the ping.
xping.pubsub.com/ping - Thanks for the ping.
pingoat.com/goat/RPC2/ - ?
pingqueue.com/rpc/ - ?
www.bloglines.com/ping - Thanks for the ping
rpc.newsgator.com/ - ?
rpc.pingomatic.com - Pinging too fast. Slow down cowboy. Please ping no more than once every 5 minutes.
www.newsisfree.com/RPCCloud - ?
xmlrpc.blogg.de - ?
api.moreover.com/RPC2 - Thanks for the ping! The update to Free%20Sex%20Blog has been updated in our database. We used parameters - weblogname = Free%20Sex%20Blog, weblogurl = http://mysexsite.org, changesurl = http://mysexsite.org, categoryname = none
api.my.yahoo.co.jp/RPC2 - OK
api.my.yahoo.com/RPC2 - Unable to process
audiorpc.weblogs.com/RPC2 - Thanks for the ping.
blog.goo.ne.jp/XMLRPC - Thanks for the ping.
blogpeople.net/ping - Thanks for the ping.
blogsearch.google.ae/ping/RPC2 - Thanks for the ping.
blogsearch.google.at/ping/RPC2 - Thanks for the ping.
blogsearch.google.be/ping/RPC2 - Thanks for the ping.
blogsearch.google.bg/ping/RPC2 - Thanks for the ping.
blogsearch.google.ca/ping/RPC2 - Thanks for the ping.
blogsearch.google.ch/ping/RPC2 - Thanks for the ping.
blogsearch.google.cl/ping/RPC2 - Thanks for the ping.
blogsearch.google.co.cr/ping/RPC2 - Thanks for the ping.
blogsearch.google.co.hu/ping/RPC2 - Thanks for the ping.
blogsearch.google.co.id/ping/RPC2 - Thanks for the ping.
blogsearch.google.co.il/ping/RPC2 - Thanks for the ping.
blogsearch.google.co.in/ping/RPC2 - Thanks for the ping.
blogsearch.google.co.it/ping/RPC2 - Thanks for the ping.
blogsearch.google.co.jp/ping/RPC2 - Thanks for the ping.
blogsearch.google.co.ma/ping/RPC2 - Thanks for the ping.
blogsearch.google.co.nz/ping/RPC2 - Thanks for the ping.
blogsearch.google.co.th/ping/RPC2 - Thanks for the ping.
blogsearch.google.co.uk/ping/RPC2 - Thanks for the ping.
blogsearch.google.co.ve/ping/RPC2 - Thanks for the ping.
blogsearch.google.co.za/ping/RPC2 - Thanks for the ping.
blogsearch.google.com.ar/ping/RPC2 - Thanks for the ping.
blogsearch.google.com.au/ping/RPC2 - Thanks for the ping.
blogsearch.google.com.br/ping/RPC2 - Thanks for the ping.
blogsearch.google.com.co/ping/RPC2 - Thanks for the ping.
blogsearch.google.com.do/ping/RPC2 - Thanks for the ping.
blogsearch.google.com.mx/ping/RPC2 - Thanks for the ping.
blogsearch.google.com.my/ping/RPC2 - Thanks for the ping.
blogsearch.google.com.pe/ping/RPC2 - Thanks for the ping.
blogsearch.google.com.sa/ping/RPC2 - Thanks for the ping.
blogsearch.google.com.sg/ping/RPC2 - Thanks for the ping.
blogsearch.google.com.tr/ping/RPC2 - Thanks for the ping.
blogsearch.google.com.tw/ping/RPC2 - Thanks for the ping.
blogsearch.google.com.ua/ping/RPC2 - Thanks for the ping.
blogsearch.google.com.uy/ping/RPC2 - Thanks for the ping.
blogsearch.google.com.vn/ping/RPC2 - Thanks for the ping.
blogsearch.google.com/ping/RPC2 - Thanks for the ping.
blogsearch.google.de/ping/RPC2 - Thanks for the ping.
blogsearch.google.es/ping/RPC2 - Thanks for the ping.
blogsearch.google.fi/ping/RPC2 - Thanks for the ping.
blogsearch.google.fr/ping/RPC2 - Thanks for the ping.
blogsearch.google.gr/ping/RPC2 - Thanks for the ping.
blogsearch.google.hr/ping/RPC2 - Thanks for the ping.
blogsearch.google.ie/ping/RPC2 - Thanks for the ping.
blogsearch.google.in/ping/RPC2 - Thanks for the ping.
blogsearch.google.it/ping/RPC2 - Thanks for the ping.
blogsearch.google.jp/ping/RPC2 - Thanks for the ping.
blogsearch.google.lt/ping/RPC2 - Thanks for the ping.
blogsearch.google.nl/ping/RPC2 - Thanks for the ping.
blogsearch.google.pl/ping/RPC2 - Thanks for the ping.
blogsearch.google.pt/ping/RPC2 - Thanks for the ping.
blogsearch.google.ro/ping/RPC2 - Thanks for the ping.
blogsearch.google.ru/ping/RPC2 - Thanks for the ping.
blogsearch.google.se/ping/RPC2 - Thanks for the ping.
blogsearch.google.sk/ping/RPC2 - Thanks for the ping.
blogsearch.google.tw/ping/RPC2 - Thanks for the ping.
blogsearch.google.us/ping/RPC2 - Thanks for the ping.
feedsky.com/api/RPC2 - ?
hamo-search.com/ping.php - Thanks for your Ping.
holycowdude.com/rpc/ping/ - ?
newsblog.jungleboots.org/ping.php - ?
ping.blogoon.net/ - ?
ping.blogs.yandex.ru/RPC2 - Thanks for the ping.
ping.fc2.com/ - Thanks for your ping.
ping.feedburner.com/ - Ok
ping.kutsulog.net/ - Thanks for the ping.
ping.myblog.jp/ - Thanks for the Ping!!
ping.namaan.net/rpc - Thanks for the ping.
ping.snap.com/ping/RPC2 - Thanks for the ping.
ping.syndic8.com/xmlrpc.php - Thanks!
ping.weblogalot.com/rpc.php - Success! Thank you for your ping.
ping.wordblog.de/ - err
r.hatena.ne.jp/rpc - Thanks for the ping
rpc.bloggerei.de/ping/ - P
rpc.blogrolling.com/pinger/ - ?
rpc.icerocket.com:10080/ - ?
rpc.pingomatic.com - Pinging too fast. Slow down cowboy. Please ping no more than once every 5 minutes.
rpc.reader.livedoor.com/ping - Thanks for the ping
rpc.technorati.com/rpc/ping - You just sent a ping, please only ping when you update
rpc.technorati.jp/rpc/ping - You just sent a ping, please only ping when you update
rpc.twingly.com/ - Thanks for the ping.
rpc.weblogs.com/RPC2 - Thanks for the ping.
wasalive.com/ping/ - Thanks for the ping on WASAlive!
www.blogpeople.net/servlet/weblogUpdates - Thanks for the ping.
xmlrpc.blogg.de - ?
xping.pubsub.com/ping/ - Thanks for the ping.
zhuaxia.com/rpc/server.php - s

FINISHED PINGING 157 SERVICES!

I think it`s very good list. Thanks a lot!

Nice list, thank you!

How is it a good list if most of them don't work.

List looks good. But the http is missing from alot of the beginning of urls.
That is what looks looks like is missing and why results are so poor.

anyone got an updated list of ping sites for wordpress?

Thank you, very good !

Thanks for this.
Using it already

great thanks for sharing...trying

Thanks for sharing