AS20559 Fundaments B.V. 🇳🇱 NL

Announcing 38 prefixes, seen at the RIS collectors.

IPv4 prefixes
31
34,560 (135 × /24)
IPv6 prefixes
7
19 × /32
Upstreams
9
transit providers observed
Peers
15
settlement-free adjacencies
Downstreams
0
transit customers observed
Customer cone
0
ASes reachable through it

Registry and operator data

AS number
AS20559
Name
Fundaments B.V.
Organisation
Fundaments
Country
🇳🇱 NL
RIR
RIPENCC
Allocated
2015-08-13
Network type
Enterprise
Traffic levels
5-10Gbps
Scope
Europe
Peering policy
Open
IRR as-set
RIPE::AS-FUNDAMENTS
PeeringDB
net/10115
Exchanges
6
Facilities
5

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

35 valid (92.1%) 0 invalid (0.0%) 3 no ROA (7.9%)

Announcement history

One point per day, recorded at each table import

0816233109-1809-2409-3010-0610-1210-1810-24
IPv4 IPv6

Recorded changes

New prefixes and origin changes seen on the live stream

WhenChangePrefixOriginPath
2026-10-22 18:50:17Z origin change 185.41.136.0/22 AS57325 → AS20559 55720291417420559
2026-10-22 10:47:23Z origin change 185.41.136.0/22 AS20559 → AS57325 1490733564209357325
2026-10-20 17:10:51Z origin change 185.41.136.0/22 AS57325 → AS20559 443935805720559
2026-10-20 17:09:48Z origin change 185.41.136.0/22 AS20559 → AS57325 443934017534209357325
2026-10-20 14:45:09Z origin change 185.41.136.0/22 AS57325 → AS20559 4608757512992478520559
2026-10-20 14:43:33Z origin change 185.41.136.0/22 AS20559 → AS57325 46081221463733564209357325
2026-10-20 14:13:28Z origin change 185.41.136.0/22 AS57325 → AS20559 4608757512992478520559
2026-10-20 14:10:48Z origin change 185.41.136.0/22 AS20559 → AS57325 46081221463733564209357325
2026-10-16 06:49:19Z origin change 185.41.136.0/22 AS20559 → AS57325 33334209357325
2026-10-16 06:49:19Z origin change 185.41.136.0/22 AS57325 → AS20559 333320559
2026-10-16 06:49:18Z origin change 185.41.136.0/22 AS20559 → AS57325 443934017534209357325
2026-10-16 06:49:18Z origin change 185.41.136.0/22 AS57325 → AS20559 443935805720559
2026-10-16 02:45:57Z origin change 185.41.136.0/22 AS57325 → AS20559 32884032772717420559
2026-10-16 00:31:49Z origin change 185.41.136.0/22 AS20559 → AS57325 32884032772717433564209357325
2026-10-15 08:03:11Z origin change 185.41.136.0/22 AS57325 → AS20559 4608757512992478520559
2026-10-15 08:03:06Z origin change 185.41.136.0/22 AS20559 → AS57325 354933564209357325
2026-10-14 16:15:20Z origin change 185.41.136.0/22 AS57325 → AS20559 4608757512992478520559
2026-10-14 16:12:03Z origin change 185.41.136.0/22 AS20559 → AS57325 46081221463733564209357325