Free Data Query Service (DQS)

Real-Time DNS Blocklists

If you are a non-commercial small business with low query volumes, you may qualify for a Data Query Service account with no subscription costs. Here are the terms related to this service, and a comparison table of what’s included in the free service.

Are you currently using the Spamhaus Project’s free DNSBLs and experiencing issues?

If you have started to encounter issues with your mail stream because you are outside the Spamhaus Project’s Fair Use Policy e.g. querying via Open DNS or excessive query volumes, please ensure you action one of the following points BEFORE applying for the Free DQS. Otherwise, our registration email may not reach you.

Correctly configure your MTA to accept error codes (see our config guides for commonly used MTAs), or
Remove the existing Spamhaus Project DNSBL configuration from your MTA.

How to apply

Fill out the form below, then confirm your email address. You’ll then be able to set up a password for our Customer Portal and login to view your access details.

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Email address *

First name *

Last name *

Company name If you are an individual, please leave blank

Phone number Please include country code

Country *

Questions or comments

Please confirm that you are currently running your own email server *

KOREA TELECOM USERS - READ THIS BEFORE SUBMITTING. To ensure you receive a verification email, either
1. Correctly configure your MTA to accept error codes using these Configuration Guides, or
2. Remove the existing Spamhaus Project DNSBL configuration from your MTA. Thank you.

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