Autonomous System
AS39912 oja.at GmbH
ISPActiveAustriaRIPE
AS39912 (i3B-AS) is an ISP network operated by oja.at GmbH in Austria, registered with RIPE. It has 43 IPv4 prefixes with 50,176 addresses and 3 IPv6 prefixes, which makes it the 4,328th largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses50,176in 43 prefixes
IPv6 prefixes3≈ 2.4 × 10²⁹ addresses
Size rank#4,328of 82,200 active ASNs
Details
Organizationoja.at GmbH
AS namei3B-AS
Websiteoja.at
Country Austria (AT)
Network typeISP
RegistryRIPE
Abuse contactabuse@oja.at
Registered2006-05-16
Last updated2026-08-03
IPv4 prefixes
43 prefixes · 50,176 addresses| Network | Addresses | First – last address |
|---|---|---|
| 77.220.96.0/20 | 4,096 | 77.220.96.0 – 77.220.111.255 |
| 78.142.96.0/20 | 4,096 | 78.142.96.0 – 78.142.111.255 |
| 93.185.128.0/20 | 4,096 | 93.185.128.0 – 93.185.143.255 |
| 95.143.80.0/20 | 4,096 | 95.143.80.0 – 95.143.95.255 |
| 37.186.8.0/21 | 2,048 | 37.186.8.0 – 37.186.15.255 |
| 37.186.16.0/21 | 2,048 | 37.186.16.0 – 37.186.23.255 |
| 77.220.120.0/21 | 2,048 | 77.220.120.0 – 77.220.127.255 |
| 78.142.72.0/21 | 2,048 | 78.142.72.0 – 78.142.79.255 |
| 81.94.56.0/21 | 2,048 | 81.94.56.0 – 81.94.63.255 |
| 92.63.216.0/21 | 2,048 | 92.63.216.0 – 92.63.223.255 |
| 195.16.224.0/21 | 2,048 | 195.16.224.0 – 195.16.231.255 |
| 37.186.0.0/22 | 1,024 | 37.186.0.0 – 37.186.3.255 |
| 77.220.112.0/22 | 1,024 | 77.220.112.0 – 77.220.115.255 |
| 78.142.68.0/22 | 1,024 | 78.142.68.0 – 78.142.71.255 |
| 78.142.112.0/22 | 1,024 | 78.142.112.0 – 78.142.115.255 |
| 78.142.124.0/22 | 1,024 | 78.142.124.0 – 78.142.127.255 |
| 81.94.48.0/22 | 1,024 | 81.94.48.0 – 81.94.51.255 |
| 92.42.16.0/22 | 1,024 | 92.42.16.0 – 92.42.19.255 |
| 92.63.208.0/22 | 1,024 | 92.63.208.0 – 92.63.211.255 |
| 195.16.232.0/22 | 1,024 | 195.16.232.0 – 195.16.235.255 |
| 195.140.136.0/22 | 1,024 | 195.140.136.0 – 195.140.139.255 |
| 213.139.252.0/22 | 1,024 | 213.139.252.0 – 213.139.255.255 |
| 37.186.6.0/23 | 512 | 37.186.6.0 – 37.186.7.255 |
| 78.142.64.0/23 | 512 | 78.142.64.0 – 78.142.65.255 |
| 78.142.116.0/23 | 512 | 78.142.116.0 – 78.142.117.255 |
77.220.96.0/20 78.142.96.0/20 93.185.128.0/20 95.143.80.0/20 37.186.8.0/21 37.186.16.0/21 77.220.120.0/21 78.142.72.0/21 81.94.56.0/21 92.63.216.0/21 195.16.224.0/21 37.186.0.0/22 77.220.112.0/22 78.142.68.0/22 78.142.112.0/22 78.142.124.0/22 81.94.48.0/22 92.42.16.0/22 92.63.208.0/22 195.16.232.0/22 195.140.136.0/22 213.139.252.0/22 37.186.6.0/23 78.142.64.0/23 78.142.116.0/23
The 25 largest of 43. The API and the database have all of them.
IPv6 prefixes
3 prefixes- 2a00:e98::/32
- 2a01:f8::/32
- 2a01:100::/32
2a00:e98::/32 2a01:f8::/32 2a01:100::/32
Query AS39912 with the API
The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day.
curl "https://api.ipapi.is/?q=AS39912&key=YOUR_API_KEY"Any address in its prefixes resolves to AS39912, with or without a key:
curl "https://api.ipapi.is/?q=77.220.96.1"Largest networks in Austria
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