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MXToolbox Blacklist Check vs Barracuda Reputation Lookup: catalog facts
MXToolbox Blacklist Check	Barracuda Reputation Lookup
Free The blacklist check is free to use on the website.	Free Free to use online.
Web	Web
Checks over 100 DNSBLs in one pass Accepts an IP address or a domain	Direct check against the list Barracuda firewalls use Removal request form on the same site
Covers fewer lists than some dedicated multi-RBL tools Shows listings but does not remove them	Covers only Barracuda's own reputation list Useful mainly for mail server operators
Web application	Web application
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	No account 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.