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IP Address Lookup

This Lookup tool is only for IP Addresses - do not enter domains or email addresses.
If you do not know what an IP address is, or what IP to look up, please contact your Internet Service Provider and ask them to help you.
IP Address Lookup Tool. This lookup tool checks to see if the IP Address you enter is currently listed in the live Spamhaus IP blocklists: SBL, XBL and PBL.

Enter an IP Address


If your IP address is listed on one of our IP blocklists; SBL, XBL or PBL (collectively known as the 'Zen' blocklist), this lookup tool will tell you which one and will give you a link to information on what to do.
Associated Documents

How Blocklists Work
What is an "IP Address"?

Domain Lookup

This Lookup tool is only for Domains (not IP Addresses). The DBL only lists domains currently involved in spam, therefore it is extremely unlikely that normal domains will be on the DBL.
Domain Lookup Tool. This lookup tool checks to see if the Domain you enter is currently listed in the live Spamhaus Domain Blocklist (DBL).

Enter a Domain Name


If your Domain is listed on the Spamhaus Domain Blocklist (DBL), this Lookup tool will give you a link to information on what to do.
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