This article provides you with information on how to check for IP blacklisting
You can visit the sites of the most popular blacklists such as Spamhaus, SURBL, SORBS, Invaluement, and SpamCop and look for your IP or domain listing there.
To save time, you can use MXtoolbox by clicking here. This checker will scan IP address against 50+ blacklists including Spamhaus, SURBL, SORBS, and Invaluement.
How to find your public IP address?
TIP: Should you any any further queries please contact our Support Center by clicking here.