Check any IP address for security threats, risk indicators, and reputation data. Our IP Reputation Check tool queries multiple threat intelligence sources to deliver an instant verdict with a threat score from 0 to 100. See VPN, proxy, Tor, relay, and datacenter detection flags at a glance, along with network details and abuse contact information.

What Is an IP Reputation Score?

An IP reputation score is a numeric assessment of how trustworthy or risky an IP address is, based on observed behavior and known associations. Scores are derived from multiple signals: presence on spam or abuse blacklists, association with VPN or proxy services, Tor exit node status, datacenter or hosting classification, and historical threat data. A low score indicates a clean, residential connection, while a high score suggests the IP has been linked to malicious or suspicious activity.

How the Threat Score Works

Our threat scoring system evaluates each IP against several data sources. The score ranges from 0 (no known threats) to 100 (high risk). Key factors include:

Blacklist presence — listed on Spamhaus, Barracuda, SpamCop, or other major DNSBLs
VPN/Proxy detection — IP belongs to a known VPN provider or open proxy
Tor exit node — IP is currently operating as a Tor network exit point
Datacenter classification — IP belongs to a hosting or cloud provider, not a residential ISP
Sanctions screening — IP originates from a country under international sanctions

Understanding Security Flags

Each flag indicates a specific type of detection:

VPN — The IP is associated with a commercial VPN service. The user’s real IP and location are masked behind the VPN server.

Tor Exit Node — Traffic exits the Tor anonymity network through this IP. The original source is hidden behind multiple encrypted relays.

Proxy — The IP routes traffic through a proxy server, obscuring the original client address.

Relay (iCloud) — Apple iCloud Private Relay masks the user’s IP while preserving approximate location.

Datacenter / Hosting — The IP belongs to a cloud or hosting provider rather than a residential ISP. Often used by bots, scrapers, or automated systems.

Bogon / Reserved — The IP falls within a reserved or unallocated address range per IANA assignments and should not appear in public internet traffic.

Use Cases for IP Reputation Checks

IP reputation data is used across security, fraud prevention, and compliance workflows:

Fraud detection — Flag transactions from high-risk IPs before processing payments
Bot mitigation — Identify automated traffic from datacenter and VPN IPs
Access control — Block or challenge connections from Tor exits and known proxies
Sanctions compliance — Screen IPs against sanctioned country lists for regulatory requirements
Incident response — Investigate suspicious IPs during security incidents with threat context

Related Tools

For detailed VPN and proxy analysis, use our VPN & Proxy Detector. To check if an IP is listed on email blacklists, try the IP Blacklist Check. For full geolocation and network data, visit the IP Lookup tool.

IP Reputation Check