How to Check IP Blacklist for Free

Hello, a client of mine asked me for this kind of system. I need to write a system that checks if an ip address is spam, proxy, vpn etc.
However, I need to do this system without depending on an api without getting an api key. I guess there are some ip spam lists. But I couldn't find these lists and the ones I found don't show correct results.
https://www.ipqualityscore.com/free-ip-lookup-proxy-vpn-test/lookup/212.68.60.250
Although I can't get results exactly like this site, how can I see if an ip address is blacklisted? Is there a free service available?
Thank you very much.

The site you mention has a free plan that offers about 5k checks a month. Do you need more than that?
Project Honeypot is an alternative, but you'll still need a free API key: https://www.projecthoneypot.org/httpbl_api.php
Any other free databases are bound to be lacking in data and not particularly fresh.

You can try https://www.ip2location.io with free tier monthly.

Steptoe said:

The site you mention has a free plan that offers about 5k checks a month. Do you need more than that?
Project Honeypot is an alternative, but you'll still need a free API key: https://www.projecthoneypot.org/httpbl_api.php
Any other free databases are bound to be lacking in data and not particularly fresh.

Click to expand...

Mi C said:

You can try https://www.ip2location.io with free tier monthly.

Click to expand...

Thank you very much.
https://hnisa.vercel.app/api/ip/info?ip=212.68.60.250
For now I found this api which is a free and unlimited service. I am grateful for your answers. If I have any problems with this api, I will try your suggestions immediately, thank you very much.

I got a 94 bad quality score on IPquality score but most others I passed and even pixelscan I passed. What should I think of this?

Hello! We use this site. You can put your IP in the URL: https://scamalytics.com/ip/194.113.106.101

Afterwards you can parse the score.

you can use https://checkip.me/check.php?ip=95.111.215.209 or API : https://api.checkip.me/check.php?ip=95.111.215.209