RBL: noptr.spamrats.com
RBL type: IPv4 blacklist
Website: http://spamrats.com/rats-noptr.php
Lookup link: http://spamrats.com/lookup.php
Delisting link: http://spamrats.com/rats-noptr.php
Contact link: http://spamrats.com/contact.php
Delisting procedure: First, make sure your IP address has a valid reverse DNS record (PTR), then input your IP address in the delisting form, found on their website, at the delisting link mentioned above.