ASN lookup
Enter an Autonomous System Number — AS15169 or just 15169 — to see who runs the network: the org name, country, the registry that issued it, and when it was registered. Pulled live from RDAP.
What an ASN tells you
- Network name / handle — the label the operator registered for this AS (e.g. GOOGLE).
- Organization — the legal entity that holds the AS, parsed from the RDAP contact card.
- Registry (RIR) — which regional registry issued it: ARIN (North America), RIPE (Europe), APNIC (Asia-Pacific), LACNIC (Latin America) or AFRINIC (Africa).
- Dates — when the AS was first registered and last updated in the registry.
FAQ
What is an ASN lookup?
An ASN (Autonomous System Number) identifies a network operator. This tool takes an ASN and returns the network name, organization, country, the registry (RIR) that issued it and its registration dates, pulled live from RDAP.
How do I enter an ASN?
Type it with or without the AS prefix — both AS15169 and 15169 work.
What does the registry (RIR) field mean?
It shows which regional internet registry issued the ASN: ARIN (North America), RIPE NCC (Europe), APNIC (Asia-Pacific), LACNIC (Latin America) or AFRINIC (Africa).
Is this free and private?
Yes. It's free with no sign-up and runs in your browser; nothing you enter is stored.
You found who owns the network. Now find what's wrong with yours.
An ASN names the operator behind an IP — useful, but it won't tell you why your own connection is slow. Acutis Go runs a 60-second check and says whether it's the network or your machine. Free.
Get Acutis Go — freeMore IT tools: IP lookup · Domain WHOIS · Reverse DNS · All tools →
Related guide: What is an ASN?
Acutis