AS5459 — LINX-AS London Internet Exchange Ltd.

AS5459 announces 3 IPv4 prefixes covering 3,072 addresses and 11 IPv6 prefixes.

About this network

LINX-AS, described in the registry simply as the London interconnection point — the London Internet Exchange, one of the largest and oldest internet exchange points in the world.

What it's used for

• LINX's own infrastructure and services as an exchange operator: the address space underpinning its peering fabric and the systems that run it.

Notable

• An IXP's ASN is not a transit network. Members exchange traffic directly with each other over the exchange fabric, each under its own AS number; LINX itself is the venue, not a hop in the path. LINX's route servers, which do mediate peering between members, run under a separate ASN.
• LINX was founded in the mid-1990s by a handful of UK ISPs who wanted to keep domestic traffic in the country instead of hauling it across the Atlantic and back. The low AS number dates from that period.

Interesting

• The "keep local traffic local" argument that started LINX is the same one every IXP has made since. It is why an AS number attached to a building full of cross-connects ended up among the most consequential on the list.

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

Announced prefixes

• 195.66.232.0/22
• 195.66.240.0/22
• 195.66.248.0/22
• 2a01:40::/33
• 2a01:40:494a::/47
• 2a01:40:494c::/46
• 2a01:40:4950::/44
• 2a01:40:4960::/43
• 2a01:40:4980::/41
• 2a01:40:4a00::/39
• 2a01:40:4c00::/38
• 2a01:40:5000::/36
• 2a01:40:6000::/35
• 2a01:40:8000::/33

Upstream networks

• AS174 Cogent Communications, LLC
• AS6939 Hurricane Electric LLC
• AS5413 Wavenet Limited
• AS702 Verizon Business
• AS34549 meerfarbig GmbH & Co. KG
• AS50304 Blix Solutions AS
• AS9002 RETN Limited
• AS48185 team.blue NV
• AS37721 Virtual Technologies & Solutions
• AS17639 Converge ICT Solutions Inc.
• AS24482 SG.GS
• AS33891 Core-Backbone GmbH
• AS3216 PJSC "Vimpelcom"
• AS37100 SEACOM Limited
• AS6830 Liberty Global Europe Holding B.V.
• AS6797 GlobalConnect AB
• AS7575 Australian Academic and Research Network (AARNet)
• AS48362 Stadtwerke Feldkirch
• AS25091 IP-Max SA

Downstream networks

• AS1921 ipcom GmbH
• AS199670 DNS-Belgium VZW
• AS200070 CZ.NIC, z.s.p.o.
• AS25152 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)

Adjacent networks

• AS174 Cogent Communications, LLC
• AS5413 Wavenet Limited
• AS6939 Hurricane Electric LLC
• AS1921 ipcom GmbH
• AS702 Verizon Business
• AS199670 DNS-Belgium VZW
• AS34549 meerfarbig GmbH & Co. KG
• AS200070 CZ.NIC, z.s.p.o.
• AS9002 RETN Limited
• AS50304 Blix Solutions AS
• AS7575 Australian Academic and Research Network (AARNet)
• AS24482 SG.GS
• AS48185 team.blue NV
• AS17639 Converge ICT Solutions Inc.
• AS37721 Virtual Technologies & Solutions
• AS25152 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS33891 Core-Backbone GmbH
• AS3216 PJSC "Vimpelcom"
• AS6797 GlobalConnect AB
• AS6830 Liberty Global Europe Holding B.V.
• AS37100 SEACOM Limited
• AS25091 IP-Max SA
• AS48362 Stadtwerke Feldkirch

Routing security

• RPKI: 4 valid, 0 invalid and 0 not-found announcements; 4 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 4 route objects.
• Listed in as-sets: AS-199481-LINX, AS-4D-DC-LONAP, AS-ATRATO:AS-PEERS, AS-BSVE:AS-LINX-PEERS-1, AS-BSVE:AS-LINX-PEERS-2, AS-CAT, AS-CWCUSTEU, AS-DEMONTRANSIT, AS-DFNFROMNACAMAR, AS-GSVNET-LINX-PEERS, AS-INSNET, AS-JANETEURO, AS-LINX, AS-LINX-ROUTE-COLLECTORS, AS-LIQUID-LINXPEERS, AS-MANDA-LINX-PEERS-V4, AS-MANDA-LINX-PEERS-V6, AS-NAUKAV6, AS-OCTET, AS-OPENPEERINGPEERS-EU, AS-PEERS, AS-PLUSNETUK:AS-LINX-PEERS-PRI, AS-PLUSNETUK:AS-LINX-PEERS-SEC, AS-TMNET-PEERS, AS-UUNETPIPEXLINX.

Internet exchanges

• LINX LON1 — London, United Kingdom
• LINX Manchester — Manchester, United Kingdom
• LINX Scotland — Scotland, United Kingdom