Do I need to create an account to use the ARIN RDAP lookup?

No, the service is public and standard lookups do not require a paid subscription or account creation.

What information does the ARIN RDAP search return for an ASN?

It returns structured ownership and registry details including contact information, registration dates, and associated IP resources for the specified Autonomous System Number.

Can I search by IP address or CIDR range using this tool?

Yes, the interface supports IP Address or CIDR range queries in addition to ASN lookups.

What should I do if no results are found for my ASN query?

Verify the ASN format, check for typos, or use the Entity or Domain search filters to broaden the query scope.

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BGP AS Lookup

Provided byARIN Whois/RDAP Searcharin.net

ARIN’s RDAP web search allows free lookup of ASN and IP registration records via a browser interface. It can resolve ...

One of 5 options for BGP AS Lookup

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Screenshot of BGP AS Lookup on ARIN Whois/RDAP Search — arin.netOpen the live tool →

About this tool

What BGP AS Lookup does

ARIN's RDAP web search provides a browser-based interface for resolving Border Gateway Protocol Autonomous System Number and IP address registration records from public registries. Users receive structured ownership and registry information for the specified ASN or IP, including contact details, registration dates, and associated resources. The results are drawn from ARIN's official database, ensuring authoritative data for North American and some international allocations.

Step by step

How to use the ARIN Whois/RDAP Search BGP AS Lookup

1
Open the ARIN RDAP search page and set the query type to ASN
2
Enter the Autonomous System Number or IP address/CIDR range in the search field
3
Review the structured ownership and registry information returned
4
Use the filter options to narrow results by entity type or domain if needed
5
Consult the related Whois inaccuracy report or documentation links for additional context

Is it right for you

Best for

Network administrators and researchers who need authoritative ASN and IP registration data from ARIN's public registry without requiring a paid subscription.

Limitations

Results are limited to ARIN's jurisdictional region
Interface relies on automatic query type detection, which may require manual adjustment
Standard lookups are free, but heavy or automated use may be subject to terms of use

Questions

BGP AS Lookup FAQ

Do I need to create an account to use the ARIN RDAP lookup?: No, the service is public and standard lookups do not require a paid subscription or account creation.
What information does the ARIN RDAP search return for an ASN?: It returns structured ownership and registry details including contact information, registration dates, and associated IP resources for the specified Autonomous System Number.
Can I search by IP address or CIDR range using this tool?: Yes, the interface supports IP Address or CIDR range queries in addition to ASN lookups.
What should I do if no results are found for my ASN query?: Verify the ASN format, check for typos, or use the Entity or Domain search filters to broaden the query scope.

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