AS204731 — fibrenest FIBRENEST LIMITED

Network type: residential

AS204731 announces 4 IPv4 prefixes covering 7,168 addresses and 1 IPv6 prefixes.

About this network

The AS handle FIBRENEST is held by FibreNest Limited.

What it's used for

• The address space carries residential and business internet access, evidenced by the netname UK-FIBRENEST1-20180117 and the operator's provision of ultrafast fibre connectivity to new homes and businesses in the UK.
• The AS announces 7,168 IPv4 addresses across 4 prefixes and 9 IPv6 prefixes, with 11 observed neighbours; this ratio indicates an access network rather than a transit provider.
• Traffic from this AS consists of subscriber eyeballs using fibre-based broadband services, including WiFi extenders and speed guarantee add-ons for domestic properties.

Notable

• Registrants for the majority of the announced IPv4 space are Cogent Communications, LLC, with netnames COGENT-A and COGENT-154-62-16, while the 185.241.224.0/22 block is registered to Network Engineering and FIBRENEST LIMITED.
• The address inventory includes a large /20 block from Cogent alongside smaller /22 blocks, suggesting a mix of leased transit space and directly allocated fibre infrastructure.

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

Announced prefixes

• 38.126.80.0/20
• 154.62.164.0/22
• 154.62.168.0/22
• 185.241.224.0/22
• 2a0c:b381::/32

Upstream networks

• AS6461 Zayo Bandwidth
• AS6939 Hurricane Electric LLC
• AS174 Cogent Communications, LLC
• AS24482 SG.GS
• AS48185 team.blue NV
• AS50300 CustodianDC Limited
• AS8218 Zayo Infrastructure France SA
• AS33891 Core-Backbone GmbH
• AS20562 Broadband Hosting B.V.

Adjacent networks

• AS6461 Zayo Bandwidth
• AS6939 Hurricane Electric LLC
• AS174 Cogent Communications, LLC
• AS48185 team.blue NV
• AS50300 CustodianDC Limited
• AS24482 SG.GS
• AS8218 Zayo Infrastructure France SA
• AS33891 Core-Backbone GmbH
• AS20562 Broadband Hosting B.V.

Routing security

• RPKI: 27 valid, 0 invalid and 0 not-found announcements; 26 ROAs.
• ASPA: none published.
• IRR: 56% of announcements registered; 24 route objects.
• Listed in as-sets: AS-LONAP-CONNECTED, AS-LONAP-MLP, AS-LONAP-MLP-V6, AS-SET-LONAP-CONNECTED, AS-SET-LONAP-MLP, AS-SET-LONAP-MLP-V6.

Internet exchanges

• London Network Access Point — London, United Kingdom
• LINX Manchester — Manchester, United Kingdom