Autonomous System
AS203273 NetCrafters OU
HostingActiveEstoniaRIPE
AS203273 (NetCraftersOU) is a hosting network operated by NetCrafters OU in Estonia, registered with RIPE. It has 171 IPv4 prefixes with 44,800 addresses and 4 IPv6 prefixes, which makes it the 4,548th largest of 82,283 active autonomous systems by IPv4 space.
IPv4 addresses44,800in 171 prefixes
IPv6 prefixes4≈ 1.5 × 10²⁸ addresses
Size rank#4,548of 82,283 active ASNs
Details
OrganizationNetCrafters OU · hosting provider profile
AS nameNetCraftersOU
Websitenetcraftersou.com
Country Estonia (EE)
Network typeHosting
RegistryRIPE
Abuse contactabuse@netcrafters.host
Registered2025-12-03
Last updated2026-06-04
IPv4 prefixes
171 prefixes · 44,800 addresses| Network | Addresses | First – last address |
|---|---|---|
| 91.196.162.0/23 | 512 | 91.196.162.0 – 91.196.163.255 |
| 193.41.4.0/23 | 512 | 193.41.4.0 – 193.41.5.255 |
| 193.233.202.0/23 | 512 | 193.233.202.0 – 193.233.203.255 |
| 194.88.150.0/23 | 512 | 194.88.150.0 – 194.88.151.255 |
| 2.56.118.0/24 | 256 | 2.56.118.0 – 2.56.118.255 |
| 2.56.119.0/24 | 256 | 2.56.119.0 – 2.56.119.255 |
| 2.56.120.0/24 | 256 | 2.56.120.0 – 2.56.120.255 |
| 2.56.121.0/24 | 256 | 2.56.121.0 – 2.56.121.255 |
| 2.56.122.0/24 | 256 | 2.56.122.0 – 2.56.122.255 |
| 2.56.123.0/24 | 256 | 2.56.123.0 – 2.56.123.255 |
| 2.56.124.0/24 | 256 | 2.56.124.0 – 2.56.124.255 |
| 2.56.125.0/24 | 256 | 2.56.125.0 – 2.56.125.255 |
| 2.56.126.0/24 | 256 | 2.56.126.0 – 2.56.126.255 |
| 2.56.127.0/24 | 256 | 2.56.127.0 – 2.56.127.255 |
| 2.56.172.0/24 | 256 | 2.56.172.0 – 2.56.172.255 |
| 2.56.174.0/24 | 256 | 2.56.174.0 – 2.56.174.255 |
| 2.56.175.0/24 | 256 | 2.56.175.0 – 2.56.175.255 |
| 2.56.176.0/24 | 256 | 2.56.176.0 – 2.56.176.255 |
| 2.56.177.0/24 | 256 | 2.56.177.0 – 2.56.177.255 |
| 2.56.179.0/24 | 256 | 2.56.179.0 – 2.56.179.255 |
| 45.9.117.0/24 | 256 | 45.9.117.0 – 45.9.117.255 |
| 45.9.120.0/24 | 256 | 45.9.120.0 – 45.9.120.255 |
| 45.86.245.0/24 | 256 | 45.86.245.0 – 45.86.245.255 |
| 45.94.37.0/24 | 256 | 45.94.37.0 – 45.94.37.255 |
| 45.118.248.0/24 | 256 | 45.118.248.0 – 45.118.248.255 |
91.196.162.0/23 193.41.4.0/23 193.233.202.0/23 194.88.150.0/23 2.56.118.0/24 2.56.119.0/24 2.56.120.0/24 2.56.121.0/24 2.56.122.0/24 2.56.123.0/24 2.56.124.0/24 2.56.125.0/24 2.56.126.0/24 2.56.127.0/24 2.56.172.0/24 2.56.174.0/24 2.56.175.0/24 2.56.176.0/24 2.56.177.0/24 2.56.179.0/24 45.9.117.0/24 45.9.120.0/24 45.86.245.0/24 45.94.37.0/24 45.118.248.0/24
The 25 largest of 171. The API and the database have all of them.
IPv6 prefixes
4 prefixes- 2a01:e5c0:9000::/36
- 2a01:e5c0:f000::/36
- 2a14:a084:f000::/36
- 2a0e:d606::/48
2a01:e5c0:9000::/36 2a01:e5c0:f000::/36 2a14:a084:f000::/36 2a0e:d606::/48
Query AS203273 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=AS203273&key=YOUR_API_KEY"Any address in its prefixes resolves to AS203273, with or without a key:
curl "https://api.ipapi.is/?q=91.196.162.1"