Find out if your domain or server IP is listed on major spam blacklists – a top reason business emails go to spam.
🎁 Your first website check is free – every security tool works on it. Need unlimited checks? Go Pro
🔒 We only query public blacklist DNS zones.
How to use the blacklist checker
- Enter your domain.
- We check its server IP and the domain itself against major blacklists.
- If listed, fix the cause and request removal.
Why do domains get blacklisted?
A hacked website sending spam, an infected computer on the office network, a compromised email account or sending bulk email to old purchased lists.
How to get removed
First fix the cause, otherwise you will be re-listed. Then visit each list's website and use its removal or lookup form.
Frequently asked questions
Why are my emails going to spam?
Common causes are blacklisting, missing SPF/DKIM/DMARC, or poor sending reputation. Check both this tool and the Email Spoofing Checker.
What does 'could not check' mean?
Some lists refuse queries from shared public resolvers. It does not mean you are listed.
How long does delisting take?
From minutes to a few days depending on the list.