How do I check an IP’s reputation?

Enter the IP above for an instant summary, or call the API to score addresses programmatically.

Is there an API for reputation?

Yes — combine the VPN, proxy, geo and ASN endpoints, or use the aggregate signals returned for an IP, to compute reputation in your own rules.

The web check is free; API usage starts with 100 free lookups per month.

IPScanner

IP Reputation Check

Look up the reputation of any IP address — VPN, proxy, Tor, hosting and abuse signals combined into one clear picture.

Overview

What is IP reputation?

IP reputation is a summary of how trustworthy an IP address is, based on what it is and how it has behaved. An address that belongs to a VPN, proxy or hosting provider, or that has a history of abuse, carries more risk than a stable residential connection. An IP reputation check pulls these signals together so you can score an address quickly instead of investigating each factor by hand.

Signals

What goes into IP reputation

Reputation is the sum of several independent indicators.

Anonymiser signals

VPN, proxy and Tor association all lower reputation.

Hosting vs. residential

Datacenter origin is riskier than a consumer ISP.

Abuse history

Past spam, fraud or attack activity from the range.

Geolocation context

Location consistency across signals.

ASN ownership

Who owns the range and how it is typically used.

Combined risk score

A single 0–100 value summarising overall risk.

Use cases

Where teams use it

Risk scoring

Feed IP reputation into signup, login and checkout decisions.

Triage

Quickly judge a suspicious IP in an alert or log.

Allow/deny lists

Build dynamic lists from reputation thresholds.

Enrichment

Augment SIEM and analytics data with reputation context.

More tools

Explore related detection tools

VPN Detection APIReal-time VPN detection API. Send any IP and get back whether it belongs to a commercial VPN, with a confidence score. Free tier, simple REST, fast global lookups.Proxy Detection APIDetect HTTP, SOCKS, residential and datacenter proxies plus Tor exit nodes from any IP with one REST call. Real-time proxy detection API with a free tier.Residential Proxy DetectionDetect residential proxies that disguise traffic as ordinary home connections. Real-time residential proxy detection by IP with confidence scoring and a free tier.Datacenter Proxy DetectionDetect datacenter and cloud-hosted proxies by IP in real time. Identify hosting ASNs used for proxying and scraping with confidence scoring and a free API tier.

Explore the Suite

Try Our Other Tools

VPN DetectionIdentify IPs that route through encrypted VPN tunnels to mask their real location.Proxy DetectionFlag HTTP, SOCKS, residential and data-center proxies plus Tor exit nodes.IP GeolocationMap any IP to country, region and city with ISP and timezone data.ASN DataLook up the Autonomous System Number and organization that owns an IP range.WHOIS InfoRetrieve registration and ownership records for domains and IP ranges.

FAQ

Frequently asked questions

Association with VPNs, proxies, Tor or hosting networks, plus any history of abuse, all reduce an IP’s reputation. We combine these into a single risk score.

Why Choose IPScanner

Trusted by thousands of businesses worldwide to provide reliable IP intelligence

Industry-Leading Accuracy

Our AI-powered detection achieves 99.8% accuracy, significantly outperforming traditional methods.

Enterprise-Grade Performance

Built for scale with high reliability and 99.99% uptime SLA for business-critical applications.

Comprehensive Coverage

We maintain the largest database of VPN services, proxies, and anonymizers with daily updates.

Simple Integration

Easy-to-use REST API for all major programming languages and frameworks.

Transparent Communication

Clear documentation and regular updates on our detection capabilities and improvements.

Expert Support

Dedicated technical support team with deep expertise in IP intelligence and cybersecurity.

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