AS Number Lookup
Autonomous System (AS) Numbers are used by various routing protocols. IANA allocates AS Numbers to Regional Internet Registries (RIRs).
The RIRs further allocate or assign AS Numbers to network operators in line with RIR policies.
Fill AS Number you want to check below to see company / ISP information and Prefixes (if any).
ASN by Country
Autonomous System (AS) Numbers count by Country.
Country ↕️ | Continent ↕️ | Total ASN ↕️ |
|---|---|---|
United States  | North America | 16,873 |
Brazil  | South America | 7,708 |
Russian Federation  | Europe | 4,979 |
| Unknown | Unknown | 2,567 |
India  | Asia | 2,336 |
Indonesia  | Asia | 2,332 |
Germany  | Europe | 2,112 |
Poland  | Europe | 1,942 |
United Kingdom  | Europe | 1,866 |
Ukraine  | Europe | 1,572 |