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MultiRBL vs Spamhaus IP and Domain Reputation Checker: catalog facts
MultiRBL	Spamhaus IP and Domain Reputation Checker
Free Free to use, with optional Bitcoin donations.	Free Free lookups.
Web	Web
Checks over 200 blacklists and whitelists Supports IPv4 and IPv6	Checks both IP addresses and domains Results come from Spamhaus itself
No help with removal requests Plain interface with lots of technical output	Covers Spamhaus blocklists only
Web application	Web application
Closed source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.