Does anyone recognize this ads.txt

There is this site that managed to get accepted into ADX through a reseller, I'm trying to figure out what company/reseller they use for ads.

google.com, pub-5580567301439906, RESELLER, f08c47fec0942fa0
#esl
google.com, pub-7620071422727774, RESELLER, f08c47fec0942fa0
google.com, pub-5278973888786334, RESELLER, f08c47fec0942fa0
google.com, pub-6190096338979886, RESELLER, f08c47fec0942fa0
google.com, pub-1142323411777001, RESELLER, f08c47fec0942fa0
google.com, pub-3764626397686609, RESELLER, f08c47fec0942fa0


If anyone recognizes "#esl" or any of these pub ids please let me know!