Check any IP address reputation instantly. Detect blocklisted addresses, proxies, VPNs, and high-risk connections. Normalized score (200–1000).
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Connect IP Insights to your app and score every connection in real time. Detect proxies, blocklisted IPs, and high-risk connections so your team can respond with confidence.
Free trial · 1,000 credits · No credit card required.
IP reputation is a trust score based on an IP address's history and behavior. Think of it like a credit score for internet addresses. Every IP accumulates a track record based on the traffic it sends, the networks it belongs to, and whether it has been caught participating in malicious activity.
A good reputation means the IP has a clean history. A bad reputation means it has been linked to spam, malware, hacking attempts, or other unwanted behavior.
Our IP reputation checker returns a normalized score (200–1000). Here is what each range means:
Clean IP with no adverse signals. Typical of trusted residential or enterprise connections.
Minor signals present but generally safe. May be a shared network or mobile carrier.
Notable risk signals detected. Could be a VPN, data center, or IP with some blocklist history.
Multiple threat signals. Often associated with known proxies, recent blocklist entries, or suspicious hosting.
Severe risk indicators. Actively blocklisted, associated with attacks, or flagged by multiple threat intelligence sources.
IP reputation is not a single check. It combines multiple threat intelligence signals into one explainable score so you understand exactly why an IP is flagged.
Blocklists are databases of IP addresses caught sending spam, distributing malware, or conducting network attacks. If an IP appears on multiple blocklists, email providers and firewalls may reject its traffic. Our checker shows how many sources have flagged the IP and when it was last detected.
The way an IP connects to the internet reveals a lot. Wired and mobile connections are normal for everyday users. VPN, Tor, and open proxy connections may indicate someone is hiding their real identity. Cloud provider IPs often belong to automated systems rather than real people.
Some IPs belong to recognized enterprise security services like Zscaler or Cloudflare. Traffic from these providers typically passes through legitimate corporate security gateways. Identifying trusted providers helps distinguish real business traffic from suspicious anonymous connections.
Every IP range is registered to an organization. Knowing who owns the network helps contextualize the risk. An IP belonging to a major ISP or corporation carries different implications than one registered to a hosting provider commonly associated with abuse.
Each reputation check includes plain-language explanations of why an IP received its score. Instead of a single number, you get actionable context: what contributed to the risk level and what it means for your specific situation.
The country, region, and ASN (Autonomous System Number) associated with an IP provide context about the traffic source. While location alone does not determine risk, it adds valuable context when combined with other reputation signals.
Security teams, developers, and operations professionals use IP reputation data to make informed decisions about network trust, powered by 30+ threat intelligence sources updated in real time.
Threat intelligence across 30+ sources
Evaluate incoming connections by checking reputation of source IPs against 30+ threat intelligence feeds. Identify whether traffic comes from VPNs, Tor exit nodes, open proxies, or known malicious infrastructure before it reaches your application.
Pre-computed intelligence, sub-second response
Integrate IP reputation checks directly into your application with no external API calls at runtime. Pre-computed intelligence means every lookup returns instantly with connection type, blocklist status, and risk scoring ready to use.
Geolocation and WHOIS enrichment
Enrich IP databases with geolocation, ASN, and network ownership data sourced from all 5 Regional Internet Registries. Monitor your own infrastructure for blocklist appearances and document IP risk assessments for compliance reviews.
Explore how IP reputation fits into a broader fraud prevention strategy.
Layer 0 of the Identifier Trust Layers framework: why firewalls, WAFs, and IP blocklists miss identity-layer fraud.
Read article →How AI-generated identifiers bypass traditional checks and what multi-signal validation catches that single-point tools miss.
Read article →A three-layer framework for evaluating traffic and submissions before they reach your system.
Read article →An IP reputation score is a normalized score (200–1000) that reflects how trustworthy an IP address appears based on its history and behavior. A score of 200 indicates a clean, low-risk address. A score approaching 1000 signals significant risk, such as involvement in spam, malware distribution, or known attacks.
Enter your IP address in the checker above. The results will show whether your IP appears on any blocklists, how many sources have flagged it, and when it was last detected. This helps you understand if your server or network has been associated with unwanted activity.
Connection type reveals how an IP address connects to the internet. Wired and mobile connections are typical for everyday users. VPN, Tor, open proxy, and cloud provider connections may indicate someone is hiding their real identity, which can be a risk signal depending on your use case.
Start by scanning your network for malware or compromised devices. If your IP was used for spam, contact your ISP to report the issue. For blocklist removals, visit each blocklist provider and submit a delisting request. Consistent clean behavior over time will gradually improve your reputation.
A trusted provider is a recognized enterprise security service like Zscaler, Cloudflare, or similar platforms. When an IP is associated with a trusted provider, it typically means the traffic comes through a legitimate corporate security gateway rather than an anonymous proxy.
A standard IP lookup focuses on geolocation, showing where an IP is physically located. An IP reputation check goes deeper by analyzing threat signals: blocklist status, connection type risk, network ownership, and an overall risk score. It answers “how risky is this IP?” rather than “where is this IP?”
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