BGP AS Lookup
The BGP Toolkit lets you search by ASN, IP address, or prefix to view origin AS, announced routes, peers, and routing...
What BGP AS Lookup does
The Hurricane Electric BGP Toolkit is a free browser-based interface for resolving Border Gateway Protocol Autonomous System Number (ASN) and IP address registration records. Users can input an ASN, IP address, or prefix to retrieve structured ownership data, origin AS details, announced routes, peer connections, and routing visibility information drawn from public registries. The tool provides a quick way to investigate network paths and organizational assignments without requiring a paid subscription or local software. The site’s version distinguishes itself through a clean, dashboard-style interface that displays the visitor’s own ISP and announced prefixes alongside search results. It offers side-by-side route visualization, peer AS listings, and RPKI/ASPA reports within the same page, supported by explanatory labels and a persistent navigation bar. Compared to other free tools, the Hurricane Electric BGP Toolkit combines registry lookup with real-time routing data and a “Looking Glass” style view, all accessible without account creation.
How to use the Hurricane Electric BGP Toolkit BGP AS Lookup
- 1
Enter an ASN, IP address, or prefix into the search bar on the BGP Toolkit homepage
- 2
Select the specific identifier type from the dropdown or let the tool auto-detect the input
- 3
Review the origin AS, announced routes, peer ASNs, and routing visibility data presented on the results page
- 4
Use the side panels or tabs to explore additional details such as RPKI status, bogon status, or prefix reports
Best for
Network administrators, developers, and researchers who need a fast, free way to investigate ASN ownership, route announcements, and peer relationships without installing specialized software.
Limitations
- Results depend on publicly available BGP routing tables and may not reflect the most recent changes
- No unit conversion or proprietary database filtering; results are limited to what registries have published
- Interface is designed for desktop browsers; mobile experience may be less convenient for extended analysis
BGP AS Lookup FAQ
- Can I look up my own IP address or ASN using this tool?
- Yes, the BGP Toolkit automatically detects and displays your visiting IP address, assigned ASN, and announced prefixes at the top of the page, allowing you to compare your network information against the broader routing table.
- Does the tool show real-time routing data or is it based on cached tables?
- The tool queries live BGP routing tables from public looking glass servers and registry sources, so the route announcements, peers, and RPKI status reflect current table entries rather than static cached data.
- Is there a limit on how many ASNs or IP addresses I can search in one session?
- The service is free to use in the browser without requiring a paid plan, and there are no stated session limits for individual lookups; however, very high-volume automated querying may be restricted to ensure service stability for all users.
- Can I use this tool to check RPKI or ASPA validation status for a route?
- Yes, the BGP Toolkit includes dedicated RPKI & ASPA Report and Super Traceroute features that display validation status, route origin validation, and ASPA coverage for the searched ASN or prefix.
More BGP AS Lookup tools
- 01Inventive HQinventivehq.com
Look up BGP Autonomous System information by ASN or find which AS an IP address belongs to
- 02ARIN 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 ...
- 03RIPEstatripe.net
RIPEstat supports lookups for ASNs, IP addresses, prefixes, and hostnames, with routing and registration context from...
- 04Team Cymru IP to ASN Lookupcymru.com
This free lookup tool maps IP addresses to BGP origin ASN/prefix data and also accepts ASN queries. It supports IPv4 ...