Enter your sending IP or domain in the Blacklist Checker to test all 16 lists at once, or pick a specific blocklist below for a focused check and its exact removal process. Every check runs live and nothing is stored.
Critical - used by most mailbox providers
Spamhaus ZEN
Check & delist from Spamhaus ZEN.
Barracuda Reputation Block List
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SpamCop Blocking List
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Major - widely used
PSBL (Passive Spam Block List)
Check & delist from PSBL (Passive Spam Block List).
Mailspike
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NiX Spam (manitu)
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Blocklist.de
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SORBS
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Minor - moderate adoption
WPBL
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UCEPROTECT Level 1
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GBUdb Truncate
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DroneBL
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s5h.net
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SORBS Spam
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