AS1103 SURF
AS1103 is operated by SURF and registered with RIPE NCC (NL) since 1993-09-01.
It announces 99 IPv4 and 4 IPv6 prefixes, 86% of them RPKI valid.
RIPE RIS sees 65 upstream and peer networks and 474 downstream networks next to it.
PeeringDB lists it as an Educational/Research network at 3 internet exchanges and 6 facilities. Its peering policy is open.
| Name | SURF |
|---|---|
| Registry (RIR) | RIPE NCC |
| Country | Netherlands (NL) |
| Delegated on | 1993-09-01 |
| Network type | Educational/Research, Europe |
| Peering policy | Open |
| IRR as-set | RIPE::AS1103:AS-SURF |
| Prefixes (IPv4 / IPv6) | 99 / 4 |
| RPKI valid | 86% (89 / 103) |
| Upstreams and peers | 65 |
| Downstream networks | 474 |
| Website | surf.nl/en |
Routing health
- AS1103 announces 99 IPv4 and 4 IPv6 prefixes.
- 89 of 103 announced prefixes are RPKI valid.
- 14 announced prefixes are not covered by a ROA of AS1103 (they may have none, or another network’s).
- 65 upstreams and peers, 474 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 103
- 129.125.0.0/16
- 130.37.0.0/16
- 131.174.0.0/16
- 131.211.0.0/16
- 131.224.0.0/16
- 132.229.0.0/16
- 134.221.0.0/16
- 136.231.0.0/16
- 137.56.0.0/16
- 137.120.0.0/16
- 137.224.0.0/16
- 139.63.0.0/16
- 141.252.0.0/16
- 143.121.0.0/16
- 145.0.0.0/16
- 145.1.0.0/17
- 145.2.0.0/15
- 145.5.0.0/16
- 145.9.0.0/16
- 145.19.0.0/16
- 145.20.0.0/16
- 145.23.0.0/16
- 145.24.0.0/16
- 145.28.0.0/15
- 145.33.0.0/16
- 145.37.0.0/16
- 145.38.0.0/15
- 145.41.0.0/16
- 145.44.0.0/16
- 145.48.0.0/15
- 145.51.0.0/16
- 145.52.0.0/16
- 145.74.0.0/15
- 145.76.0.0/16
- 145.81.0.0/16
- 145.85.0.0/16
- 145.88.0.0/15
- 145.90.0.0/16
- 145.91.0.0/16
- 145.92.0.0/15
- 145.95.0.0/16
- 145.96.0.0/16
- 145.97.0.0/20
- 145.97.16.0/22
- 145.97.20.0/22
- 145.97.24.0/21
- 145.97.48.0/20
- 145.97.64.0/18
- 145.97.128.0/18
- 145.97.192.0/18
- 145.98.0.0/16
- 145.98.16.0/24
- 145.100.0.0/15
- 145.102.0.0/16
- 145.103.0.0/16
- 145.107.0.0/16
- 145.107.24.0/22
- 145.108.0.0/16
- 145.116.64.0/18
- 145.116.128.0/18
- 145.116.192.0/20
- 145.116.224.0/19
- 145.117.0.0/16
- 145.118.0.0/16
- 145.120.0.0/14
- 145.124.0.0/15
- 145.126.0.0/16
- 145.127.0.0/17
- 145.136.0.0/15
- 145.137.128.0/18
- 145.138.0.0/16
- 145.140.0.0/14
- 145.144.0.0/12
- 145.160.0.0/12
- 156.83.0.0/16
- 192.16.188.0/23
- 192.31.231.0/24
- 192.33.36.0/24
- 192.42.113.0/24
- 192.42.114.0/23
- 192.42.120.0/22
- 192.42.124.0/22
- 192.43.212.0/24
- 192.87.0.0/16
- 192.104.140.0/24
- 193.176.235.0/24
- 193.177.176.0/22
- 194.13.112.0/21
- 194.26.8.0/22
- 194.26.12.0/22
- 194.53.88.0/24
- 194.53.89.0/24
- 194.53.92.0/24
- 194.53.94.0/24
- 194.53.95.0/24
- 194.104.124.0/23
- 194.104.240.0/20
- 194.171.0.0/16
- 195.169.0.0/16
- 2001:67c:262c::/48
Showing the first 100.
Upstreams and peers 65
The networks RIPE RIS sees next to AS1103 in BGP paths, the most visible first.
Peering
Peering policy: Open. Suggested max-prefix limits: 300 IPv4, 50 IPv6. PeeringDB record
| Exchange | Ports | Speed | Route server |
|---|---|---|---|
| AMS-IX | 3 | 600G | Yes |
| Frys-IX | 3 | 600G | Yes |
| NL-ix: Main | 2 | 200G | Yes |
| Facility | City | Country |
|---|---|---|
| Digital Realty AMS17 - Amsterdam | Amsterdam | NL |
| Digital Realty AMS3/5/7/8/10 - Amsterdam | Amsterdam | NL |
| Digital Realty AMS9 - Amsterdam | Amsterdam | NL |
| Equinix AM3 - Amsterdam, Science Park | Amsterdam | NL |
| Equinix AM7 - Amsterdam, Kuiperberweg | Amsterdam | NL |
| NIKHEF Amsterdam | Amsterdam | NL |
More about AS1103
Sources: RIR delegation data and PeeringDB (updated daily); routing from RIPEstat (RIPE NCC RIS and RPKI), refreshed daily. Routing data from 2026-11-14 11:29 UTC. The country is where the AS number was registered, not necessarily where the network operates.