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Spamhaus IP and Domain Reputation Checker vs HetrixTools: catalog facts
Spamhaus IP and Domain Reputation Checker	HetrixTools
Free Free lookups.	Freemium Free tier with 15 uptime and 32 blacklist monitors; paid plans add more.
Web	Web
Checks both IP addresses and domains Results come from Spamhaus itself	Generous free tier for uptime and blacklist monitoring Checks from up to 12 locations
Covers Spamhaus blocklists only	Hosted only, with no self-hosted option Requires an account
Web application	Web application, Hosted service
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Account needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 23, 2026

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