Threat Detection
Identify IPs involved in malware, botnets, spam, DDoS, scanning, and other malicious activities.
IP Reputation Real-time IP address threat analysis
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Output
How this check works · illustration
Check any IP address against configured intelligence sources. Get instant risk scores, abuse history, geolocation, and ASN data.
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Fictional example
Read an example IP report.
Illustration dated 2026-09-01. Indicators, providers, scores and observations are fictional. This is not a current result for these addresses.
Example requestGET /api/check?query=192.0.2.42
192.0.2.42
IP addressElevated risk
Network context
CountryDE
ASNAS64500
OperatorExample network
rDNShost.example.net
Open ports (3)
804438080
An open port describes an exposed service. Additional evidence is needed to assess whether it is being abused.
61Risk score
Sources flagging
2of 3 sources
Confidence
75 %
The score and confidence are illustrative values. Confidence describes support for the assessment; it is not a percentage of sources or a probability of compromise.
Example categories
ProxyMalware
Example source observations
| Source | Observation |
|---|---|
| Example feed A | Flagged |
| Example feed B | Flagged |
| Example feed C | Not listed |
“Not listed” means this source has no listing in the example. It is not a clean bill of health.
How to interpret it
Compare source observations, dates and technical context before taking action. This example makes no attribution to a threat actor.
Fictional example2 sources flag the indicatorConfidence: 75 %No live lookup
Real reports depend on the indicator, available sources and access level. Missing data is shown explicitly. These panels illustrate how to read the data; they are not an API response schema.
7.5M+
IPs in Database
725
Threat Sources
< 50 ms
Response Time
99.5 %
Accuracy
Capabilities
Signals for your investigation.
Connect the signals, then examine the context.
Geolocation Data
Get country, city, ISP, and organization information for any IP address.
ASN Intelligence
See which network owns the IP and check reputation at the ASN level.
Abuse History
View historical abuse reports and see when an IP was first and last seen as malicious.
Risk Scoring
Get a normalized risk score from 0-100 based on threat severity and confidence.
Bulk IP Checks
Check thousands of IPs at once with our high-performance bulk API.
Applications
Use cases. How security teams use this tool.
Firewall Integration
Enrich firewall logs and automatically block high-risk IP addresses.
Login Protection
Check IP reputation during authentication to prevent credential stuffing.
SOC Triage
Help analysts quickly assess if an IP in an alert is known malicious.
Transaction Security
Flag high-risk IPs during payment processing to prevent fraud.
What is IP Reputation?
IP reputation is a security assessment methodology that evaluates the trustworthiness of an IP address based on its historical behavior and associations with malicious activities. Every device connected to the internet has an IP address, and tracking which IPs have been involved in attacks, spam, scanning, or other abuse creates valuable threat intelligence. Organizations use IP reputation data to block malicious traffic at the network perimeter, protect authentication systems, and enrich security alerts with context about threat actors.
How IP Reputation Analysis Works
Our IP reputation system continuously monitors billions of IP addresses across the global internet, collecting data from abuse reports, honeypots, spam traps, network flow analysis, and threat intelligence partnerships. When you query an IP, we check it against multiple reputation databases, analyze its ASN and geolocation context, review historical abuse patterns, and calculate a normalized risk score from 0-100. The response includes threat categories, first-seen and last-seen timestamps, and confidence levels to help you make informed security decisions.
Types of Malicious IP Activity
Malicious IPs engage in various attack patterns: botnet IPs participate in DDoS attacks and coordinated campaigns, scanner IPs probe networks for vulnerabilities, spam IPs send bulk unsolicited emails, brute force IPs attempt credential stuffing attacks, C2 IPs host command-and-control servers for malware, proxy IPs anonymize attacker traffic, and cryptomining IPs run unauthorized mining operations. Understanding the specific threat category helps security teams prioritize responses and implement targeted blocking rules.
Integrating IP Reputation into Your Security Stack
IP reputation data integrates directly into multiple security touchpoints: firewalls can block high-risk IPs at the perimeter, WAFs can challenge suspicious traffic with CAPTCHAs, authentication systems can require additional verification for risky IPs, SIEMs can enrich alerts with reputation context, and fraud prevention systems can flag transactions from compromised IP ranges. Our API supports real-time lookups with sub-50ms response times, enabling inline security decisions without adding latency.
Support
Frequently asked questions.
What types of malicious IPs do you detect?
We detect IPs involved in malware distribution, botnet C2, spam, DDoS attacks, brute force attempts, scanning, phishing hosting, and more.
Do you provide geolocation data?
Yes, every IP lookup includes geolocation data including country, city, ISP, and ASN information.
How accurate is your IP reputation data?
We maintain high precision by aggregating data from configured sources and using confidence scoring to reduce false positives.
Can I check private/internal IP addresses?
Private IP ranges (10.x.x.x, 172.16-31.x.x, 192.168.x.x) will return a response indicating they are private with no threat data.
New to the term? Read the glossary definition.
Research
Related articles. Learn more from our security research blog.
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