IP2ASN
Free IP to ASN lookup service. Map any IPv4 or IPv6 address to its origin Autonomous System Number. Simple REST API with JSON responses.
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https://ip2asn.net/https://ip2asn.net/mcpLast probed Nov 3, 2026 · ip2asn.net
1tool discovered
Lookup Asn
Look up the origin AS numbers for an IP address
Schemas and invoke metadata: Directory API
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Directory coverage for brandsFree IP to ASN lookup service. Map any IPv4 or IPv6 address to its origin Autonomous System Number. Simple REST API with JSON responses.
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