# Blocklist checker

Check whether a domain or IP is listed on the major security and spam blocklists.

Enter a domain and we check it and its IP against the major security and spam blocklists that mail providers and security tools trust.

## What we check

- The domain and its resolved IP against widely-used security and email blocklists such as Spamhaus, Barracuda, and SpamCop.
- Whether each blocklist currently lists the domain, and the detail behind any listing.
- For context, whether common content-filtering resolvers block the domain (informational only).

## Why it matters

A listing on a security or spam blocklist quietly damages a domain's reputation: legitimate email starts landing in spam or bouncing, and some security tools warn users away. Listings often happen without warning, after a compromise or a spam incident, and can persist until you notice and request delisting. Checking regularly means you catch a reputation problem before it costs you deliverability.

## Frequently asked questions

### What does being listed mean for me?

Mainly email. Providers weigh these blocklists when deciding whether to accept, spam-folder, or reject your mail, so a listing can badly hurt deliverability until it is resolved.

### How do I get removed from a blocklist?

First fix the cause, which is usually a compromised account, a misconfiguration, or outbound spam. Then use each blocklist's own delisting process. Removal will not stick if the underlying problem is still there.

### Can Ranetrace watch this for me?

Yes. Ranetrace can monitor your domain's blocklist status and alert you if it ever gets listed, so you can act before your email reputation suffers.

## Run this check

Run it on your own domain here: https://ranetrace.com/tools/blocklist-checker

## Related tools

- [SSL/TLS certificate checker](https://ranetrace.com/tools/ssl-checker.md)
- [DNS lookup](https://ranetrace.com/tools/dns-lookup.md)
- [Domain & WHOIS lookup](https://ranetrace.com/tools/domain-lookup.md)

This page is a one-time snapshot. Ranetrace monitors this continuously and warns you before it becomes a problem: https://ranetrace.com/pricing.md