Autonomous System
AS48539 Bifrost Systems OU
HostingActiveEstoniaRIPE
AS48539 (bifrost-systems) is a hosting network operated by Bifrost Systems OU in Estonia, registered with RIPE. It has 42 IPv4 prefixes with 10,752 addresses and 4 IPv6 prefixes, which makes it the 9,807th largest of 82,677 active autonomous systems by IPv4 space.
IPv4 addresses10,752in 42 prefixes
IPv6 prefixes4≈ 4.8 × 10²⁴ addresses
Size rank#9,807of 82,677 active ASNs
Details
OrganizationBifrost Systems OU
AS namebifrost-systems
Websitebifrost.systems
Country Estonia (EE)
Network typeHosting
RegistryRIPE
Abuse contactabuse@bifrost.systems
Registered2021-07-20
Last updated2026-07-31
IPv4 prefixes
42 prefixes · 10,752 addresses| Network | Addresses | First – last address |
|---|---|---|
| 2.152.78.0/24 | 256 | 2.152.78.0 – 2.152.78.255 |
| 5.252.156.0/24 | 256 | 5.252.156.0 – 5.252.156.255 |
| 45.81.151.0/24 | 256 | 45.81.151.0 – 45.81.151.255 |
| 45.85.120.0/24 | 256 | 45.85.120.0 – 45.85.120.255 |
| 45.85.122.0/24 | 256 | 45.85.122.0 – 45.85.122.255 |
| 45.85.123.0/24 | 256 | 45.85.123.0 – 45.85.123.255 |
| 79.98.33.0/24 | 256 | 79.98.33.0 – 79.98.33.255 |
| 79.98.39.0/24 | 256 | 79.98.39.0 – 79.98.39.255 |
| 86.105.204.0/24 | 256 | 86.105.204.0 – 86.105.204.255 |
| 86.105.205.0/24 | 256 | 86.105.205.0 – 86.105.205.255 |
| 87.76.167.0/24 | 256 | 87.76.167.0 – 87.76.167.255 |
| 87.192.81.0/24 | 256 | 87.192.81.0 – 87.192.81.255 |
| 89.21.84.0/24 | 256 | 89.21.84.0 – 89.21.84.255 |
| 89.28.207.0/24 | 256 | 89.28.207.0 – 89.28.207.255 |
| 89.251.27.0/24 | 256 | 89.251.27.0 – 89.251.27.255 |
| 89.251.31.0/24 | 256 | 89.251.31.0 – 89.251.31.255 |
| 91.210.147.0/24 | 256 | 91.210.147.0 – 91.210.147.255 |
| 91.226.57.0/24 | 256 | 91.226.57.0 – 91.226.57.255 |
| 109.205.189.0/24 | 256 | 109.205.189.0 – 109.205.189.255 |
| 130.78.10.0/24 | 256 | 130.78.10.0 – 130.78.10.255 |
| 146.19.131.0/24 | 256 | 146.19.131.0 – 146.19.131.255 |
| 152.89.195.0/24 | 256 | 152.89.195.0 – 152.89.195.255 |
| 178.17.247.0/24 | 256 | 178.17.247.0 – 178.17.247.255 |
| 178.212.137.0/24 | 256 | 178.212.137.0 – 178.212.137.255 |
| 185.209.86.0/24 | 256 | 185.209.86.0 – 185.209.86.255 |
2.152.78.0/24 5.252.156.0/24 45.81.151.0/24 45.85.120.0/24 45.85.122.0/24 45.85.123.0/24 79.98.33.0/24 79.98.39.0/24 86.105.204.0/24 86.105.205.0/24 87.76.167.0/24 87.192.81.0/24 89.21.84.0/24 89.28.207.0/24 89.251.27.0/24 89.251.31.0/24 91.210.147.0/24 91.226.57.0/24 109.205.189.0/24 130.78.10.0/24 146.19.131.0/24 152.89.195.0/24 178.17.247.0/24 178.212.137.0/24 185.209.86.0/24
The 25 largest of 42. The API and the database have all of them.
IPv6 prefixes
4 prefixes- 2a11:6a00::/48
- 2a12:2780::/48
- 2a12:8200::/48
- 2a12:ab00::/48
2a11:6a00::/48 2a12:2780::/48 2a12:8200::/48 2a12:ab00::/48
Query AS48539 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=AS48539&key=YOUR_API_KEY"Any address in its prefixes resolves to AS48539, with or without a key:
curl "https://api.ipapi.is/?q=2.152.78.1"