IP Reputation Check
Check any IPv4 address against Spamhaus DROP — netblocks known to be entirely spam/hijacker-controlled. Free, live, no signup.
Live check — nothing storedFrequently asked questions
What is Spamhaus DROP?
Don't Route Or Peer -- a free, public list maintained by The Spamhaus Project of netblocks known to be entirely controlled by spammers or hijackers. It's used by ISPs and firewalls worldwide.
Why is this free when other IP reputation services require signup?
Every dedicated IP reputation/abuse service we researched (AbuseIPDB, Abstract, Opportify, and others) requires account signup and an API key even on their free tier. This tool uses a genuinely public, keyless data source instead.
Does a clean result mean the IP is safe?
No. This checks one specific list, not a full reputation score. A clean result means the IP is not on Spamhaus DROP -- it does not guarantee the IP has no other history of abuse.
Can I use this in my own code?
Yes. This page calls the same free, public API endpoint you can call directly: GET /api/ip-reputation?ip=1.2.3.4. No signup or API key required.