Q & A

Verify DNSBL Listing

Enter the suspected IP address to check the status in our DNSBL's.

If you are listed:

  1. Fix the problem.
  2. Create an account and verify your contact details

Q) Is this the FusionZero DNSBL?

A) Yes.

Q) My email was blocked by 0spam, why?

A) 0spam does not block emails, we provide a report on senders based on spam trap triggers. Mail servers may be configured to bounce, delete or place mail that is flagged by 0spam in a spam folder.

Q) Why is my email blocked?

A) Email may have been blocked based on its 0spam reputation by an email provider that you sent to. You should contact your IT or email provider in order to resolve the listing.

Q) How do I unblock my email address?

A) 0spam does not block or list by email address, our services list reputation codes based on IP or URLs.

Q) What blacklists am I on?

A) You can search the full DNSBL here: Full DNSBL Check

Q) How is the 0spam project supported?

A) 0spam.org is funded in the following ways:

  • By donation.
  • Intelligent detection services which help service providers identify spam before it reaches your inbox.
  • IP listing Notification Services.

Q) Is this dnsbl service free?

A) Yes. You may use the DNSBL service for free for all uses; commercial, non profit and personal.