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Sender Score vs Cisco Talos Reputation Center: catalog facts
Sender Score	Cisco Talos Reputation Center
Free The score lookup and related tools are offered free by Validity.	Free Reputation lookups are free.
Web	Web
Quick reputation score for an IP address or domain Return Path Blocklist lookup and removal request in one place	Looks up both IP addresses and domains Reflects data used by Cisco security products
Site also promotes Validity's paid email services Score reflects Validity's own data rather than every mailbox provider	Disputes must go through a separate support site Only shows Cisco's own reputation view
Web application	Web application
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Needs internet	Not stated if it works offline
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.