IP Blacklist Check

What Is DNSBL and Why Check Your IP?

DNSBL (DNS-based Blackhole List) is a database of IP addresses caught sending spam, malicious activity, or other abuse. Mail servers and firewalls check incoming connections against these lists and may block traffic from "dirty" IPs.

If your proxy server's IP is blacklisted, it can lead to: email blocking (messages go to spam), denied access to websites, captchas on every visit, and reduced trust in your requests.

Which Databases Do We Check?

Our tool checks IP against 7 major DNSBLs: Spamhaus ZEN (most authoritative), SORBS DNSBL, Spamcop, Barracuda, CBL (Composite Blocking List), PSBL (Passive Spam Block List), and UCEPROTECT-1.

How to Use?

Enter an IP address in the input field (your current IP is pre-filled by default). Click "Check". In a few seconds, you'll see a table with results for each database. Green "Clean" status means the IP is clear, red "Listed" means it's blacklisted.

FAQ

What if my IP is blacklisted? Contact your provider or use proxies with clean IPs. GProxy guarantees that all our proxies are regularly checked against DNSBL.

How often are lists updated? Major DNSBLs are updated in real-time. Removal from a list can take from a few hours to several weeks.