BGP context

ASN Lookup

Look up an autonomous system number or public IP address to see network ownership and announced prefix context.

ASN data describes the network announcing routes. It can indicate an ISP, VPN provider, mobile carrier, cloud host, or enterprise network, but it does not identify a person.

Lookup

Lookup ASN or IP

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Results

ASN and routing context

Enter an ASN or public IP address to look up network ownership and BGP context.

Checked at: Not checked yet

Providers used

Provider details appear after a lookup.

Limitations

BGP and ASN data can change.
Some IPs map to CDN, cloud, hosting, VPN, or proxy infrastructure.
Prefix lists may be partial depending on the provider.

Want the full picture? Run the Privacy Exposure Report.

Combine IP, WebRTC, IPv6, DNS leak, fingerprint, user-agent, and related privacy signals in one report.

Run report Scan website Check email exposure

Related tools

Continue the privacy check

Domain Intelligence ReportCombine DNS, RDAP, ASN, PTR, CAA, DNSSEC, TXT, and provider hints. VPN Leak TestCompare route signals with expected VPN behavior. DNS Leak TestCheck resolver signals alongside ASN context. WebRTC Leak TestReview browser-exposed IP candidates. IP Geolocation LookupCheck approximate IP location and network fields.

Check my website/domain

What this checks

Public DNS, HTTP, HTTPS, certificate, redirect, header, IP/ASN, or domain configuration signals.

Limits

What this cannot check

It cannot perform credentialed vulnerability testing, scan private hosts, bypass access controls, or certify complete security.

Read results

How to use the output

Treat results as review signals for this browser/session or public target. Re-test after one change, then use Safe Copy or notes that avoid raw identifiers.