AS20559 — FUNDAMENTS-AS

Network type: hosting

AS20559 announces 30 IPv4 prefixes covering 33,536 addresses and 7 IPv6 prefixes.

About this network

FUNDAMENTS-AS is operated by Fundaments B.V., a Dutch hosting and cloud services provider.

What it's used for

• The address space carries hosting and cloud infrastructure, evidenced by the reverse DNS record node-5.parantion.fundaments.cloud and netnames such as NL-FUNDAMENTS-20080701.
• The AS announces 33,536 IPv4 addresses across 30 prefixes and 7 IPv6 prefixes, while maintaining 123 observed neighbours. This ratio of moderate address space against a high number of peering partners indicates a role focused on hosting and business connectivity rather than pure transit or residential access.

Notable

• Registrants are consistent with the announcer, with the majority of prefixes registered to Fundaments B.V.; one prefix, 78.31.112.0/21, is registered to Site4U B.V. under the netname SITE4U-NET.
• The address inventory is finely subdivided into numerous /21 and /22 blocks, reflecting an internal corporate estate structure typical of a hosting provider managing distinct customer or service segments.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 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
• 185.46.64.0/22
• 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:d10::/32
• 2a00:d1c0::/32
• 2a01:448:72::/48
• 2a02:ac40::/29
• 2a03:3400::/32
• 2a06:6940::/29
• 2a07:3502:1160::/48

Upstream networks

• AS174 Cogent Communications, LLC
• AS20562 Broadband Hosting B.V.
• AS6939 Hurricane Electric LLC
• AS24785 Broadband Hosting B.V.
• AS8455 atom86 BV
• AS58057 Securebit AG
• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS50300 CustodianDC Limited
• AS24482 SG.GS
• AS48185 team.blue NV
• AS48362 Stadtwerke Feldkirch
• AS20766 Association "Gitoyen"
• AS34927 iFog GmbH
• AS12779 IT.Gate S.p.A.
• AS3216 PJSC "Vimpelcom"
• AS37100 SEACOM Limited
• AS57463 NetIX Communications JSC
• AS12552 GlobalConnect AB
• AS37721 Virtual Technologies & Solutions
• AS202365 Omer GOLGELI
• AS29632 Netassist International EOOD
• AS204092 Association GRIFON
• AS50673 Serverius Holding B.V.
• AS213241 TECHIT.BE SRL
• AS56662 Marcin Gondek

Downstream networks

• AS39390 Mainfreight Holding BV

Adjacent networks

• AS174 Cogent Communications, LLC
• AS20562 Broadband Hosting B.V.
• AS6939 Hurricane Electric LLC
• AS24785 Broadband Hosting B.V.
• AS8455 atom86 BV
• AS39390 Mainfreight Holding BV
• AS24482 SG.GS
• AS58057 Securebit AG
• AS50300 CustodianDC Limited
• AS48362 Stadtwerke Feldkirch
• AS48185 team.blue NV
• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS20766 Association "Gitoyen"
• AS57463 NetIX Communications JSC
• AS12552 GlobalConnect AB
• AS34927 iFog GmbH
• AS37721 Virtual Technologies & Solutions
• AS202365 Omer GOLGELI
• AS3216 PJSC "Vimpelcom"
• AS37100 SEACOM Limited
• AS12779 IT.Gate S.p.A.
• AS29632 Netassist International EOOD
• AS50673 Serverius Holding B.V.
• AS204092 Association GRIFON
• AS56662 Marcin Gondek

Internet exchanges

• AMS-IX Amsterdam — Amsterdam, Netherlands
• Neutral Internet Exchange — Amsterdam, Netherlands
• Speed Internet Exchange — Dronten, Netherlands
• LayerSwitch Internet Exchange — The Hague, Netherlands