AS51088 A2B Internet
AS51088 is operated by A2B Internet and registered with RIPE NCC (NL) since 2010-05-28.
It announces 58 IPv4 and 19 IPv6 prefixes, 89% of them RPKI valid.
RIPE RIS sees 28 upstream and peer networks and 42 downstream networks next to it.
PeeringDB lists it as an NSP network at 4 internet exchanges and 19 facilities. Its peering policy is selective.
| Name | A2B Internet |
|---|---|
| Registry (RIR) | RIPE NCC |
| Country | Netherlands (NL) |
| Delegated on | 2010-05-28 |
| Network type | NSP, Regional |
| Peering policy | Selective |
| IRR as-set | RIPE::AS51088:AS-A2B |
| Prefixes (IPv4 / IPv6) | 58 / 19 |
| RPKI valid | 89% (69 / 77) |
| Upstreams and peers | 28 |
| Downstream networks | 42 |
| Website | a2b-internet.com |
Routing health
- AS51088 announces 58 IPv4 and 19 IPv6 prefixes.
- 69 of 77 announced prefixes are RPKI valid.
- 8 announced prefixes are not covered by a ROA of AS51088 (they may have none, or another network’s).
- 28 upstreams and peers, 42 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 77
- 5.10.192.0/24
- 31.41.255.0/24
- 31.134.200.0/21
- 45.85.191.0/24
- 46.175.131.0/24
- 46.244.0.0/21
- 46.244.8.0/22
- 46.244.12.0/23
- 46.244.14.0/23
- 46.244.16.0/23
- 46.244.20.0/24
- 46.244.21.0/24
- 46.244.22.0/24
- 46.244.23.0/24
- 46.244.24.0/22
- 46.244.28.0/24
- 46.244.29.0/24
- 46.244.30.0/24
- 46.244.31.0/24
- 46.244.100.0/22
- 46.244.104.0/22
- 46.244.112.0/23
- 46.244.120.0/23
- 46.244.122.0/23
- 46.244.124.0/23
- 46.244.126.0/24
- 46.244.127.0/24
- 62.3.55.0/24
- 62.68.84.0/24
- 91.213.13.0/24
- 93.93.120.0/21
- 93.190.124.0/24
- 146.19.97.0/24
- 146.19.192.0/24
- 178.211.151.0/24
- 178.249.152.0/21
- 185.30.204.0/22
- 185.34.220.0/22
- 185.37.4.0/23
- 185.37.6.0/24
- 185.40.254.0/24
- 185.41.124.0/22
- 185.44.244.0/22
- 185.46.173.0/24
- 185.51.52.0/23
- 185.63.244.0/22
- 185.205.52.0/22
- 185.217.118.0/24
- 185.218.207.0/24
- 185.225.220.0/22
- 185.240.112.0/22
- 188.95.143.0/24
- 192.166.96.0/22
- 193.39.250.0/24
- 193.108.238.0/24
- 193.110.189.0/24
- 193.169.108.0/23
- 212.24.126.0/24
- 2a0a:e80::/29
- 2a0b:1c0::/29
- 2a0f:ba00::/29
- 2a0f:d440::/29
- 2a01:77e0::/32
- 2a02:166a::/32
- 2a02:166b::/32
- 2a02:1668::/32
- 2a02:2738::/32
- 2a04:6dc0::/32
- 2a05:2900::/29
- 2a06:2602::/32
- 2a12:4180::/29
- 2a13:2c00::/29
- 2a13:800::/29
- 2a13:3400::/29
- 2a14:12c0::/32
- 2001:67c:1064::/48
- 2001:67c:eb0::/48
Upstreams and peers 28
The networks RIPE RIS sees next to AS51088 in BGP paths, the most visible first.
Peering
Peering policy: Selective. Suggested max-prefix limits: 1,000 IPv4, 200 IPv6. PeeringDB record
| Exchange | Ports | Speed | Route server |
|---|---|---|---|
| AMS-IX | 1 | 20G | Yes |
| Frys-IX | 1 | 100G | Yes |
| INTERIX | 1 | 100G | Yes |
| Speed-IX: SPEED-IX | 1 | 100G | Yes |
| Facility | City | Country |
|---|---|---|
| Datacenter Noord-Holland | Alkmaar | NL |
| Digital Realty AMS17 - Amsterdam | Amsterdam | NL |
| Digital Realty AMS18 - Amsterdam | Amsterdam | NL |
| EFX | Eindhoven | NL |
| Equinix AM5 - Amsterdam, Schepenbergweg | Amsterdam | NL |
| Equinix AM7 - Amsterdam, Kuiperberweg | Amsterdam | NL |
| Eurofiber Datacenter Amsterdam 1 | Hoofddorp | NL |
| Eurofiber Datacenter NL Zuid-West 1 | Waalwijk | NL |
| Eurofiber Datacenter NL Zuid-West 2 | Steenbergen | NL |
| Eurofiber Datacenter Rotterdam 1 | Alblasserdam | NL |
| Eurofiber Datacenter Rotterdam 2 | Rotterdam | NL |
| Eurofiber Datacenter Utrecht 1 | Groenekan | NL |
| Iron Mountain Data Center - Amsterdam (AMS-1) | Amsterdam | NL |
| NIKHEF Amsterdam | Amsterdam | NL |
| NorthC Amsterdam 1 | Amsterdam | NL |
| NorthC Delft | Delft | NL |
| NorthC Eindhoven 1 | Eindhoven | NL |
| NorthC Oude Meer | Oude Meer | NL |
| NorthC Rotterdam Waalhaven | Rotterdam | NL |
More about AS51088
Sources: RIR delegation data and PeeringDB (updated daily); routing from RIPEstat (RIPE NCC RIS and RPKI), refreshed daily. Routing data from 2026-11-14 17:54 UTC. The country is where the AS number was registered, not necessarily where the network operates.