asn.dev

Adjacent networks

AS5400 BT

Unclassified RIPE

Adjacency

Adjacent networks

observed

Every AS seen directly next to AS5400 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS2856British Telecommunications LimitedResidentialIPv4 IPv635,471
AS1299Arelion Sweden ABTransitIPv4 IPv612,345
AS3356Level 3 Parent, LLCTransitIPv4 IPv69,647
AS6939Hurricane Electric LLCTransitIPv4 IPv67,743
AS174Cogent Communications, LLCTransitIPv4 IPv64,534
AS3257GTT Communications Inc.TransitIPv4 IPv63,490
AS8968RETELIT-X S.R.L.UnclassifiedIPv4 IPv62,691
AS199541EUROCONTROL, the European Organisation for the Safety of Air NavigationUnclassifiedIPv42,419
AS33891Core-Backbone GmbHHostingIPv41,337
AS1836green.ch AGResidentialIPv4 IPv61,288
AS11164Internet2EducationIPv41,279
AS12552GlobalConnect ABUnclassifiedIPv41,268
AS37100SEACOM LimitedUnclassifiedIPv41,250
AS3333Reseaux IP Europeens Network Coordination Centre (RIPE NCC)UnclassifiedIPv4 IPv61,187
AS6762TELECOM ITALIA SPARKLE S.p.A.TransitIPv4 IPv61,170
AS2110Enet Communications LIMITEDResidentialIPv4 IPv61,128
AS20485Joint Stock Company TransTeleComUnclassifiedIPv41,125
AS2497Internet Initiative Japan Inc.UnclassifiedIPv41,124
AS4637Telstra GlobalUnclassifiedIPv4 IPv61,093
AS6453TATA COMMUNICATIONS (AMERICA) INCTransitIPv4 IPv61,086
AS9002RETN LimitedUnclassifiedIPv4 IPv61,061
AS577Bell CanadaMobileIPv4 IPv6810
AS13205Telecommunications LimitedUnclassifiedIPv4754
AS42708Glesys ABUnclassifiedIPv4 IPv6526
AS33873Arvato Systems GmbHHostingIPv4 IPv6521
AS50304Blix Solutions ASUnclassifiedIPv4 IPv6499
AS3491PCCW Global (HK) Ltd.TransitIPv4 IPv6425
AS21489The North Atlantic Treaty OrganizationUnclassifiedIPv4406
AS15442Procter & Gamble Service GmbHUnclassifiedIPv4387
AS29063Eviden Netherlands B.V.UnclassifiedIPv4 IPv6331
AS30614Dell, Inc.UnclassifiedIPv4310
AS3303Swisscom (Schweiz) AGResidentialIPv4306
AS21000Atos France SASUnclassifiedIPv4304
AS72Schlumberger LimitedUnclassifiedIPv4236
AS25049Shell Information Technology International B.V.UnclassifiedIPv4232
AS7246Bristol-Myers Squibb CompanyUnclassifiedIPv4 IPv6207
AS15518Circular Informationssysteme GmbHUnclassifiedIPv4 IPv6195
AS51046Bringo LimitedUnclassifiedIPv4 IPv6191
AS212565Specsavers Optical Group LimitedUnclassifiedIPv4177
AS40126Molson Coors Beverage CompanyUnclassifiedIPv4175
AS22683Koninklijke Philips N.V.UnclassifiedIPv4174
AS16839SERVICENOW, INC.HostingIPv4 IPv6144
AS40934Fortinet Inc.UnclassifiedIPv4142
AS6830Liberty Global Europe Holding B.V.ResidentialIPv4139
AS34311LG CNS Europe B.VUnclassifiedIPv4124
AS51466Bridgestone Europe NVUnclassifiedIPv4116
AS59724Elsevier LimitedUnclassifiedIPv4116
AS3573Accenture LLPUnclassifiedIPv699
AS12298QIAGEN GmbHUnclassifiedIPv498
AS2914NTT America, Inc.TransitIPv4 IPv693

Adjacency is not the same as peering. Being next to each other in a path covers paid transit, settlement-free peering and customer connections alike, and routing data cannot distinguish them. Treat this as "these networks exchange routes", nothing more specific.

Derived from routing tables collected at 2026-10-16 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.23M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.