Autonomous System
AS31477 Duocast B.V.
HostingActiveNetherlandsRIPE
AS31477 (DUOCAST-AS) is a hosting network operated by Duocast B.V. in Netherlands, registered with RIPE. It has 43 IPv4 prefixes with 40,960 addresses and 12 IPv6 prefixes, which makes it the 4,726th largest of 82,558 active autonomous systems by IPv4 space.
IPv4 addresses40,960in 43 prefixes
IPv6 prefixes12≈ 1.4 × 10³⁰ addresses
Size rank#4,726of 82,558 active ASNs
Details
OrganizationDuocast B.V. · hosting provider profile
AS nameDUOCAST-AS
Websiteduocast.nl
Country Netherlands (NL)
Network typeHosting
RegistryRIPE
Abuse contactabuse@duocast.nl
Registered2004-05-26
Last updated2026-09-25
IPv4 prefixes
43 prefixes · 40,960 addresses| Network | Addresses | First – last address |
|---|---|---|
| 89.188.0.0/19 | 8,192 | 89.188.0.0 – 89.188.31.255 |
| 89.188.0.0/20 | 4,096 | 89.188.0.0 – 89.188.15.255 |
| 93.184.96.0/20 | 4,096 | 93.184.96.0 – 93.184.111.255 |
| 37.9.160.0/21 | 2,048 | 37.9.160.0 – 37.9.167.255 |
| 83.137.144.0/21 | 2,048 | 83.137.144.0 – 83.137.151.255 |
| 87.238.168.0/21 | 2,048 | 87.238.168.0 – 87.238.175.255 |
| 89.188.0.0/21 | 2,048 | 89.188.0.0 – 89.188.7.255 |
| 89.188.8.0/21 | 2,048 | 89.188.8.0 – 89.188.15.255 |
| 89.200.200.0/21 | 2,048 | 89.200.200.0 – 89.200.207.255 |
| 45.82.188.0/22 | 1,024 | 45.82.188.0 – 45.82.191.255 |
| 185.180.96.0/22 | 1,024 | 185.180.96.0 – 185.180.99.255 |
| 193.138.248.0/22 | 1,024 | 193.138.248.0 – 193.138.251.255 |
| 194.13.8.0/22 | 1,024 | 194.13.8.0 – 194.13.11.255 |
| 91.206.136.0/23 | 512 | 91.206.136.0 – 91.206.137.255 |
| 194.13.12.0/23 | 512 | 194.13.12.0 – 194.13.13.255 |
| 82.150.139.0/24 | 256 | 82.150.139.0 – 82.150.139.255 |
| 83.137.146.0/24 | 256 | 83.137.146.0 – 83.137.146.255 |
| 83.137.151.0/24 | 256 | 83.137.151.0 – 83.137.151.255 |
| 87.238.171.0/24 | 256 | 87.238.171.0 – 87.238.171.255 |
| 89.200.200.0/24 | 256 | 89.200.200.0 – 89.200.200.255 |
| 91.196.104.0/24 | 256 | 91.196.104.0 – 91.196.104.255 |
| 91.196.105.0/24 | 256 | 91.196.105.0 – 91.196.105.255 |
| 91.196.106.0/24 | 256 | 91.196.106.0 – 91.196.106.255 |
| 91.196.107.0/24 | 256 | 91.196.107.0 – 91.196.107.255 |
| 91.198.178.0/24 | 256 | 91.198.178.0 – 91.198.178.255 |
89.188.0.0/19 89.188.0.0/20 93.184.96.0/20 37.9.160.0/21 83.137.144.0/21 87.238.168.0/21 89.188.0.0/21 89.188.8.0/21 89.200.200.0/21 45.82.188.0/22 185.180.96.0/22 193.138.248.0/22 194.13.8.0/22 91.206.136.0/23 194.13.12.0/23 82.150.139.0/24 83.137.146.0/24 83.137.151.0/24 87.238.171.0/24 89.200.200.0/24 91.196.104.0/24 91.196.105.0/24 91.196.106.0/24 91.196.107.0/24 91.198.178.0/24
The 25 largest of 43. The API and the database have all of them.
IPv6 prefixes
12 prefixes- 2a0b:6d80::/29
- 2a0e:7280::/29
- 2a01:1b0::/32
- 2a01:1b2::/32
- 2a07:3505:80::/44
- 2001:678:2b4::/48
- 2001:678:750::/48
- 2001:678:d0c::/48
- 2001:67c:6b8::/48
- 2a00:70c0::/48
- 2a07:3501:1020::/48
- 2a07:3505:81::/48
2a0b:6d80::/29 2a0e:7280::/29 2a01:1b0::/32 2a01:1b2::/32 2a07:3505:80::/44 2001:678:2b4::/48 2001:678:750::/48 2001:678:d0c::/48 2001:67c:6b8::/48 2a00:70c0::/48 2a07:3501:1020::/48 2a07:3505:81::/48
Query AS31477 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=AS31477&key=YOUR_API_KEY"Any address in its prefixes resolves to AS31477, with or without a key:
curl "https://api.ipapi.is/?q=89.188.0.1"