ASN Lookup Autonomous System Number information
Look up network owner and ISP information for any IP or ASN. Get allocated IP ranges, organization details, and ASN reputation scores.
No credit card required · Free API key
- verdict
- malicious · 35 / 89 sources
- country
- DE · AS60729
- confidence
- 0.75
- latency
- 47 ms · cache HIT
Enriched
ASN + Geo
7.5M+
IPs Indexed
<0ms
Response Time
Daily
Updates
Key features. Everything you need to protect your infrastructure and users.
Network Owner
Identify the organization that owns a network block.
IP Ranges
See all IP prefixes announced by an ASN.
Geographic Data
Get country and region information for networks.
ASN Reputation
Risk scores based on malicious activity within the ASN.
Peer Analysis
View BGP peering relationships between networks.
Abuse Contacts
Find abuse reporting contacts for network operators.
Use cases. How security teams use this tool.
Threat Attribution
Identify who owns malicious infrastructure.
Network Blocking
Block entire ASNs known for bulletproof hosting.
Geo-blocking
Implement country-level access controls by ASN.
Risk Assessment
Evaluate risk based on network reputation.
Frequently asked questions.
What is an ASN?
How is ASN data useful for security?
Can I search by ASN number?
Do you provide ASN reputation scores?
Related tools.
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No credit card required · Free API key