ARIN Network Lookup

Search IP ranges, ASN, network ownership, and abuse contacts via RDAP.

Search by IPv4/IPv6 address or ASN. Uses ARIN RDAP API (limit ~200 queries/hour per IP).
  • ARIN (American Registry for Internet Numbers) covers North America, Caribbean, and some Pacific islands
  • RDAP provides structured JSON data about IP allocations and ASNs
  • Includes abuse contacts for reporting malicious activity
  • Other regions use different RIRs: RIPE (Europe), APNIC (Asia-Pacific), LACNIC (Latin America), AFRINIC (Africa)

About this ARIN Network Lookup

ARIN and related RIRs allocate IP address space and ASNs in their regions. RDAP network lookups show which organization holds a block and often list abuse contacts—critical for security and network troubleshooting.

Results depend on public registry data; some details may be limited or redirected to other RIRs for non-ARIN space.

How to use this tool

  1. Enter an IP address or ASN as supported.
  2. Review network name, org, and abuse contacts.
  3. Use contacts responsibly for abuse reporting only.

Common use cases

FAQ

Does this geolocate users precisely?

Registry org data is not a precise consumer geolocation service.

Privacy

DevToolBox tools are designed to process data in your browser whenever possible. Read our Privacy Policy and About page for details on client-side processing and network lookups.

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