IP & Domain Blacklist Checker

Is your mail server or domain on a spam blacklist? We check your website and mail server IPs on 25 lists at once.

100% freeLive dataEvery number explainedEnglish & Arabic

Free — no credit card. Sign in with Google (free) to keep checking and save your results; Lifetime unlocks the full lists.

What you get

Listings
How many lists flag you right now
IPs checked
Website & mail server IPs found
Domain lists
Spam-link databases for your domain
Clean
Lists where you're clear

About the IP & Domain Blacklist Checker

Spam blacklists (DNSBLs) are databases of IPs and domains that sent spam or hosted malware. Inbox providers consult them: one listing on a major list can send all your email to spam or get it rejected outright.

Enter a domain and Nuqti finds its website IP and mail server IPs, then checks them on 20 IP blacklists — plus the domain itself on 5 domain blacklists — showing a clear listed/clean grid.

How to use it

  1. 1Enter a domainLike example.com — no need for https://.
  2. 2Watch the check run liveEach step appears the moment it finishes — no waiting on a blank screen.
  3. 3Sign in free with GoogleSave your results and keep using every Nuqti tool on the free plan.

Frequently asked questions

Why is my IP blacklisted?

Usually a hacked account or form sending spam, a shared server where another customer spammed, or a 'dynamic' home IP that lists block by default.

How do I get delisted?

Fix the cause first (change passwords, secure forms), then use the list's removal page. Many lists remove you automatically after a quiet period.

Is every blacklist important?

No. Spamhaus, SpamCop and Barracuda matter most for email delivery. Small lists have limited impact.

Can I check a shared hosting IP?

Yes — enter the IP directly. If you're listed because of a neighbour, ask your host for a clean IP.

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