AS31477 Duocast
AS31477 is operated by Duocast and registered with RIPE NCC (NL) since 2004-05-26.
It announces 43 IPv4 and 12 IPv6 prefixes, 69% of them RPKI valid.
RIPE RIS sees 68 upstream and peer networks and 13 downstream networks next to it.
PeeringDB lists it as a Content network at 4 internet exchanges and 8 facilities. Its peering policy is open.
| Name | Duocast |
|---|---|
| Registry (RIR) | RIPE NCC |
| Country | Netherlands (NL) |
| Delegated on | 2004-05-26 |
| Network type | Content, Europe |
| Peering policy | Open |
| IRR as-set | RIPE::AS31477:AS-DUOCAST |
| Prefixes (IPv4 / IPv6) | 43 / 12 |
| RPKI valid | 69% (38 / 55) |
| Upstreams and peers | 68 |
| Downstream networks | 13 |
| Website | duocast.nl |
Routing health
- AS31477 announces 43 IPv4 and 12 IPv6 prefixes.
- 38 of 55 announced prefixes are RPKI valid.
- 17 announced prefixes are not covered by a ROA of AS31477 (they may have none, or another network’s).
- 68 upstreams and peers, 13 downstream networks seen.
For every check with the fix (IRR route objects, the RPKI state of each route, reverse DNS and the registration), run the full network report.
Announced prefixes 55
- 37.9.160.0/21
- 45.82.188.0/22
- 82.150.139.0/24
- 83.137.144.0/21
- 83.137.146.0/24
- 83.137.151.0/24
- 87.238.168.0/21
- 87.238.171.0/24
- 89.188.0.0/19
- 89.188.0.0/20
- 89.188.0.0/21
- 89.188.8.0/21
- 89.200.200.0/21
- 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
- 91.206.136.0/23
- 91.209.192.0/24
- 91.213.95.0/24
- 91.220.82.0/24
- 93.184.96.0/20
- 185.80.245.0/24
- 185.80.246.0/24
- 185.134.65.0/24
- 185.180.96.0/22
- 185.180.96.0/24
- 193.9.23.0/24
- 193.138.248.0/22
- 193.138.248.0/24
- 193.138.250.0/24
- 193.164.144.0/24
- 193.177.163.0/24
- 193.200.178.0/24
- 193.202.109.0/24
- 194.13.8.0/22
- 194.13.8.0/24
- 194.13.12.0/23
- 194.13.14.0/24
- 195.137.165.0/24
- 195.137.169.0/24
- 2a0b:6d80::/29
- 2a0e:7280::/29
- 2a00:70c0::/48
- 2a01:1b0::/32
- 2a01:1b2::/32
- 2a07:3501:1020::/48
- 2a07:3505:80::/44
- 2a07:3505:81::/48
- 2001:67c:6b8::/48
- 2001:678:2b4::/48
- 2001:678:750::/48
- 2001:678:d0c::/48
Upstreams and peers 68
The networks RIPE RIS sees next to AS31477 in BGP paths, the most visible first.
Peering
Peering policy: Open. Suggested max-prefix limits: 100 IPv4, 25 IPv6. PeeringDB record
| Exchange | Ports | Speed | Route server |
|---|---|---|---|
| AMS-IX | 1 | 20G | Yes |
| Frys-IX | 1 | 100G | Yes |
| GrunIX | 1 | 10G | No |
| NL-ix: Main | 1 | 10G | Yes |
| Facility | City | Country |
|---|---|---|
| Equinix AM7 - Amsterdam, Kuiperberweg | Amsterdam | NL |
| Eurofiber Datacenter Groningen 1 | Groningen | NL |
| Global Switch Amsterdam | Amsterdam | NL |
| NIKHEF Amsterdam | Amsterdam | NL |
| NorthC Groningen 1 | Groningen | NL |
| Penta Infra Leeuwarden LEE02 | Leeuwarden | NL |
| QTS Eemshaven (EEM1) | Eemshaven | NL |
| QTS Groningen (GRO1) | Groningen | NL |
More about AS31477
Sources: RIR delegation data and PeeringDB (updated daily); routing from RIPEstat (RIPE NCC RIS and RPKI), refreshed daily. Routing data from 2026-11-13 23:35 UTC. The country is where the AS number was registered, not necessarily where the network operates.