---
title: "Blacklist / DNSBL Check - Free Tool | Bit Refinery"
url: "https://bitrefinery.com/tools/blacklist-check"
description: "Check if an IP or domain is listed on major DNS-based blacklists (Spamhaus, Barracuda, SpamCop, SORBS, and more)."
lastmod: "2026-08-01"
source: "auto-generated from SSG HTML"
---

# Blacklist / DNSBL Check

Network & Connectivity

Check if an IP or domain is listed on major DNS-based blacklists (Spamhaus, Barracuda, SpamCop, SORBS, and more).

IP Address or Domain

Queries major DNS-based blacklists (Spamhaus, SORBS, Barracuda, SpamCop, and more) to check if an IP is listed as a spam source.