IP Abuse Check
Detect if an IP address has been reported for malicious activity. Data from the global AbuseIPDB community with reports from hundreds of thousands of servers.
AbuseIPDB Checker validates an IP address against the AbuseIPDB crowdsourced database (millions of user reports). Shows abuse confidence score 0-100%, report count, categories (spam, hacking, scanning, DDoS). For manual moderation or automated WAF rules.
About AbuseIPDB
AbuseIPDB is a community-based project that allows administrators and webmasters to report and check IP addresses that are associated with malicious activity online.
The confidence score (0–100%) indicates how likely an IP is to be malicious based on recent community reports. A score of 0% means no reports; 100% means the IP was reported as abusive by many users.
Why teams trust us
How it works
Enter IP address
Check DNSBL lists
Get Risk Score and contact
Why check IP for abuse?
Checking IP for abuse shows whether the address is in spam lists, DNSBL, or complaint databases. Critical for mail servers and hosting — a blocked IP won't deliver emails.
DNSBL Check
Check against dozens of DNS block lists (Spamhaus, SORBS, Barracuda, etc.).
AbuseIPDB
Number of reports, date of last report, violation categories.
WHOIS Abuse Contact
Abuse email from hosting WHOIS record.
Risk Score
Numerical IP reputation score — higher means greater email blocking risk.
Who uses this
Sysadmins
mail server IP check
Security
attacker IP reputation
Developers
spam source protection
Email marketers
deliverability audit
Common Mistakes
Best Practices
Monitor IP reputation
HTTP monitor tracks server availability and notifies about issues.
Sign up freeWhat is an IP Abuse Check and When Do You Need It?
IP abuse check queries public threat intelligence databases — AbuseIPDB, Spamhaus, SORBS, and others — to determine whether an IP address has been reported for spam, brute-force attacks, port scanning, or other malicious activity. A confidence score from 0 to 100 indicates the likelihood of abuse. This is useful when investigating suspicious traffic, screening server IPs before sending email, evaluating whether to block a network range, or auditing the reputation of your own IP addresses.
Frequently Asked Questions
What is AbuseIPDB?
AbuseIPDB is a database of IP addresses reported for malicious activity. Our tool checks IP reputation against this database.
Is the check free?
Yes, completely free with no registration required.
What does Abuse Score mean?
Abuse Score from 0 to 100 shows the level of malicious activity. Higher means more reports.
Related guides
Longer-form reading on this topic from the knowledge base.
Security audit on a schedule
Automatic HTTPS / header / cookie checks — weekly report or on change.