AS20559 Fundaments
AS20559 is operated by Fundaments and registered with RIPE NCC (NL) since 2015-08-13.
It announces 31 IPv4 and 7 IPv6 prefixes, 92% of them RPKI valid.
RIPE RIS sees 56 upstream and peer networks and 0 downstream networks next to it.
PeeringDB lists it as an Enterprise network at 6 internet exchanges and 5 facilities. Its peering policy is open.
| Name | Fundaments |
|---|---|
| Registry (RIR) | RIPE NCC |
| Country | Netherlands (NL) |
| Delegated on | 2015-08-13 |
| Network type | Enterprise, Europe |
| Peering policy | Open |
| IRR as-set | RIPE::AS-FUNDAMENTS |
| Prefixes (IPv4 / IPv6) | 31 / 7 |
| RPKI valid | 92% (35 / 38) |
| Upstreams and peers | 56 |
| Downstream networks | 0 |
| Website | fundaments.nl |
Routing health
- AS20559 announces 31 IPv4 and 7 IPv6 prefixes.
- 35 of 38 announced prefixes are RPKI valid.
- 3 announced prefixes are not covered by a ROA of AS20559 (they may have none, or another network’s).
- 56 upstreams and peers, 0 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 38
- 5.172.40.0/21
- 31.200.208.0/21
- 37.220.168.0/21
- 45.13.164.0/22
- 45.133.196.0/22
- 45.146.124.0/22
- 46.19.216.0/21
- 46.226.88.0/21
- 78.31.112.0/21
- 85.209.108.0/22
- 88.218.152.0/22
- 91.197.72.0/22
- 91.210.127.0/24
- 91.218.148.0/22
- 91.224.248.0/23
- 91.234.193.0/24
- 93.186.176.0/20
- 185.41.136.0/22
- 185.46.64.0/22
- 185.51.56.0/22
- 185.52.60.0/22
- 185.113.84.0/22
- 185.122.116.0/22
- 185.157.145.0/24
- 185.202.253.0/24
- 185.202.254.0/24
- 193.37.204.0/22
- 193.187.188.0/22
- 194.9.85.0/24
- 194.213.112.0/23
- 213.249.72.0/24
- 2a00:d1c0::/32
- 2a00:d10::/32
- 2a01:448:72::/48
- 2a02:ac40::/29
- 2a03:3400::/32
- 2a06:6940::/29
- 2a07:3502:1160::/48
Upstreams and peers 56
The networks RIPE RIS sees next to AS20559 in BGP paths, the most visible first.
Peering
Peering policy: Open. Suggested max-prefix limits: 50 IPv4, 10 IPv6. PeeringDB record
| Exchange | Ports | Speed | Route server |
|---|---|---|---|
| AMS-IX | 1 | 10G | Yes |
| Frys-IX | 1 | 10G | Yes |
| LSIX: Main | 1 | 10G | Yes |
| NDIX | 1 | 10G | No |
| NL-ix: Main | 1 | 10G | Yes |
| Speed-IX: SPEED-IX | 1 | 10G | Yes |
| Facility | City | Country |
|---|---|---|
| Equinix AM1/AM2 - Amsterdam, Luttenbergweg | Amsterdam | NL |
| Equinix AM7 - Amsterdam, Kuiperberweg | Amsterdam | NL |
| Equinix EN1 - Enschede | Enschede | NL |
| NIKHEF Amsterdam | Amsterdam | NL |
| Previder PDC2 | Hengelo | NL |
More about AS20559
Sources: RIR delegation data and PeeringDB (updated daily); routing from RIPEstat (RIPE NCC RIS and RPKI), refreshed daily. Routing data from 2026-11-13 21:41 UTC. The country is where the AS number was registered, not necessarily where the network operates.