Tool
IP Reputation Lookup
Look up geolocation, ISP, ASN, and threat flags for any IP address.
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About
What is IP Reputation?
IP reputation is a measure of the trustworthiness of an IP address based on its historical and current behavior across the internet. Security systems use reputation scores to make real-time decisions about whether to allow, challenge, or block traffic from a given source.
Threat intelligence providers aggregate signals from honeypots, spam traps, abuse reports, and network monitoring to build reputation databases. An IP that has been observed sending spam, scanning for vulnerabilities, participating in botnets, or hosting malware will accumulate a poor reputation score that persists even after the malicious activity stops.
For security operations teams, IP reputation lookups are a fast first step in triage — quickly determining whether a source IP in an alert or log entry is associated with known malicious infrastructure before investing deeper investigation time.
Data Points
What Does This Tool Check?
Each lookup aggregates multiple data points about the queried IP address to give you a complete threat context picture.
- Geolocation — Country, region, city, and approximate coordinates associated with the IP address, sourced from MaxMind and regional registries.
- ISP and ASN — The internet service provider and Autonomous System Number that owns the IP block, useful for identifying hosting providers and network operators.
- Proxy and VPN detection — Flags whether the IP is associated with known VPN services, Tor exit nodes, open proxies, or anonymization infrastructure used to mask true origins.
- Hosting provider detection — Identifies whether the IP belongs to a cloud or datacenter provider such as AWS, GCP, Azure, or DigitalOcean, which is often a strong signal for automated traffic.
- Abuse score — A composite risk score derived from historical abuse reports, blocklist appearances, and threat feed matches indicating likelihood of malicious activity.
Use Cases
Who Uses IP Reputation Lookups?
IP reputation data is used across a wide range of security and operational contexts.
SOC Analysts
Rapidly triage alert queues by checking if source IPs in firewall or SIEM logs belong to known bad actors before escalating incidents.
Fraud & Risk Teams
Detect account takeover attempts, payment fraud, and fake registrations by flagging logins from datacenter IPs, VPNs, or high-risk geographies.
Network Engineers
Validate firewall rules, investigate suspicious traffic patterns, and confirm that egress IPs for your services carry a clean reputation with mail and web providers.
Threat Intelligence
Pivot from indicators of compromise (IOCs) to infrastructure mapping, identifying hosting patterns and ASNs associated with threat actor campaigns.
FAQ
Frequently Asked Questions
How do I check if an IP address is malicious?+
Enter the IP address into the lookup tool above. It checks against live threat intelligence feeds and returns an abuse score, risk flags, geolocation, ASN, and hosting provider details instantly — no signup required.
What is an IP abuse score?+
An IP abuse score is a 0–100 rating reflecting how often an address has been reported for malicious activity — spam, port scanning, DDoS participation, brute-force attacks, and malware distribution. Scores above 25 warrant investigation; above 50 are typically blocked by security teams.
What does a VPN or proxy flag mean?+
It means the IP is associated with infrastructure used to anonymize traffic. This can indicate legitimate privacy use or attempts to mask a true origin. Combined with a high abuse score or datacenter hosting, it's a stronger signal of evasion.
Can I look up my own IP address?+
Yes — enter any public IP, including your own. This is useful before launching email campaigns (to confirm your sending IP is clean) or after setting up a VPN (to verify your exit IP has no abuse history).
Why does a legitimate IP sometimes show a high abuse score?+
Cloud providers, CDNs, and shared hosting serve many customers from the same IP range. If one customer abuses an IP, the abuse score affects the range. If you believe your IP is incorrectly flagged, most threat intelligence providers offer dispute processes.
What is the difference between ISP and ASN in the results?+
The ISP is the organization that provides internet connectivity for that IP. The ASN (Autonomous System Number) is the network block identifier used in BGP routing — it can identify cloud providers, hosting companies, or carriers operating the IP range.