How to check if your IP or email is blacklisted
- Your own IP: nothing to type. The page runs an IP blacklist check on your current address as soon as it opens, answering “is my IP address blacklisted?”.
- Another IP: paste any IPv4 address, such as a mail server or a visitor that sent spam.
- A domain or email address: type
example.comoryou@example.comto check if your email is blacklisted. The tool looks up the domain’s mail server and runs a mail server blacklist check on its IP.
Results arrive list by list in a few seconds. The summary says how many of the 14 lists include the address, and each row links to the list’s own page, where you can read the details and request blacklist removal.
Email blacklist: why your emails go to spam
An email blacklist is a list of IP addresses that mail servers refuse or distrust. When your mail server’s IP is on one, messages you send may bounce with errors like “554 rejected, listed at …” or quietly land in spam. A domain blacklist check and an SMTP blacklist check both come down to the same question: is the IP your email leaves from on a list?
| Symptom | Likely cause | What to check |
|---|---|---|
| Bounces mentioning a list name | Your sending IP is blacklisted | Run the check above, then follow the removal link |
| Mail lands in spam, no bounce | Missing SPF, DKIM or DMARC, or poor reputation | The DMARC checker and the email header analyzer |
| Only one recipient rejects you | That provider’s own filter, not a public list | Their bounce message and postmaster pages |
| Listed after a hacked account or form | Spam sent through your server | Change passwords, fix the form, then request removal |
How blocklists work
A DNS blocklist (DNSBL or RBL) is a list of IP addresses published through DNS. When a mail server receives a message, it reverses the sender’s IP and asks the list: for 203.0.113.7 on SpamCop it asks for 7.113.0.203.bl.spamcop.net. An answer such as 127.0.0.2 means listed; “no such name” means not listed. This blacklist checker asks the same questions, so you see what mail servers see. It is the same DNSBL check or RBL check mail admins run, and a quick IP reputation check.
If your IP is listed
- Read the reason shown in the results and on the list’s site. It often names the date and type of problem.
- Fix the cause. Scan devices for malware, change passwords of mail accounts that may be compromised, close open relays, and protect website forms with a captcha.
- Check your mail setup. Make sure the server has SPF, DKIM and DMARC records and a matching reverse DNS name. The DMARC checker helps, and the MX lookup shows which servers receive your mail.
- Request removal through the list’s own page. Some, such as SpamCop and blocklist.de, drop listings automatically once spam stops; the table below gives each listSome, such as SpamCop and PSBL, expire listings automatically once spam stops.rsquo;s process.
How to get removed from each blacklist
Fix the cause first: every list below adds the address again if spam keeps coming from it. Then follow the list’s own process. Many lists need no request at all and drop the address once the spam stops.
| Blacklist | How removal works | How long |
|---|---|---|
| Spamhaus | Look the address up at check.spamhaus.org; it explains the listing and offers the removal steps for that list | Depends on the list |
| Barracuda | Fill in the removal request form with the IP, your email and a reason. Requests without valid details are ignored | Usually within 12 hours |
| SpamCop | Automatic: no request needed. SpamCop drops the address when reports stop | About 24 hours after the last report |
| UCEPROTECT Level 1 | Automatic, or a paid express removal. See its removal policy. Levels 2 and 3 list whole networks: ask your provider | 7 days after the last spam |
| PSBL | Self-service: anyone can remove an address on psbl.org | Immediate, then DNS updates |
| Mailspike (both lists) | Use the delist form on its IP check page. Botnet listings wait until the infection is gone | 6 to 36 hours |
| blocklist.de | Automatic, or early removal on the delist page once the problem is fixed | 48 hours, or within an hour of a request |
| 0spam | Automatic for its realtime list; otherwise a free account and a removal request on 0spam.org | 24 hours; long-term listings need 60 days clean |
| SPFBL | Free delist if the server’s reverse DNS points back to it; a paid option otherwise | Not stated |
| DroneBL | Look the address up on dronebl.org and follow the instructions it gives | Not stated |
| InterServer, GBUdb, Anonmails, s5h.net | Follow the link next to the list in your results above | See the list’s site |
Checked on each list’s own website on 4 November 2026. Lists change their rules, so the list’s page is always the final word. If an address keeps coming back, ask its owner: the IP WHOIS lookup shows the abuse contact.
Which lists matter most
- Spamhaus is the most widely used. It cannot be checked from a browser tool; use check.spamhaus.org.
- Barracuda and SpamCop are used by many business mail servers, so a Barracuda blacklist check and a SpamCop blacklist check are both included above.
- UCEPROTECT Level 1 lists single addresses; its Levels 2 and 3 list whole networks and are used far less.
To see who is responsible for an address, use the IP WHOIS lookup.
“Your IP has been banned”: is that a blacklist?
Usually not. When a website, game or forum says your IP has been banned, that is the site’s own block, kept on its own servers, and it does not appear on the spam blacklists checked here. Common causes are too many failed logins, a shared IP that someone else misused, or a VPN address the site blocks.
- Turn off a VPN or proxy and try again from your normal connection.
- Restart your router. Many home providers give you a new IP address when it reconnects.
- Contact the site with your IP address (shown at the top of the results) and ask why it was blocked.
If spam blacklists list your IP too, that points to malware or a misused connection: fix that first, then ask the site to lift the ban.