Free Use vs Commercial Use
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Free Use vs Commercial Use
Use of the Spamhaus DNSBLs via DNS queries to our public DNSBL servers is free of charge for low-volume non-commercial use. To check if you qualify for free use, please see the Spamhaus DNSBL Usage Terms.
Use of the Spamhaus DNSBLs by ISPs, corporations and networks with high email traffic, or commercial spam filter companies requires a subscription to either the dedicated Data Feed Service (rsync) or to DQS (Data Query Service), both run by Spamhaus Technology. Compare those options here.
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