asn.dev

Observed topology

AS15412 FLAG-AS Flag Telecom UK Limited

Unclassified RIPE NSP

Upstreams 25 carry this network
Downstreams 66 this network carries
Adjacent (IPv4) 103
Adjacent (IPv6) 50
Upstream graph Who carries AS15412, and who carries them, drawn as a map up to the transit-free core. 25 exchanges Where AS15412 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 25

Networks observed carrying traffic for AS15412: the AS immediately before it in a routing path. Ranked by how many paths showed the relationship, which reflects how widely it is used, not how much traffic crosses it.

ASNetworkTypeFamiliesPaths seen
AS6939Hurricane Electric LLCTransitIPv4 IPv6563
AS1299Arelion Sweden ABTransitIPv4 IPv6175
AS2914NTT America, Inc.TransitIPv485
AS174Cogent Communications, LLCTransitIPv4 IPv653
AS6762TELECOM ITALIA SPARKLE S.p.A.TransitIPv428
AS1257Tele2 Sverige ABMobileIPv4 IPv620
AS2497Internet Initiative Japan Inc.UnclassifiedIPv419
AS3303Swisscom (Schweiz) AGResidentialIPv419
AS3491PCCW Global (HK) Ltd.TransitIPv419
AS6830Liberty Global Europe Holding B.V.ResidentialIPv419

All 25 upstreams →

Transit

Downstream networks

All 66

Networks for which AS15412 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS18101Reliance Communications Ltd.DAKC MUMBAIUnclassifiedIPv4 IPv635,529
AS5416B.S.C.UnclassifiedIPv4 IPv618,702
AS9304HGC Global Communications LimitedHostingIPv4 IPv617,596
AS30873Public Telecommunication CorporationUnclassifiedIPv45,336
AS15802Emirates Integrated Telecommunications Company PJSCUnclassifiedIPv4 IPv64,969
AS47589Kuwait Telecommunications Company K.S.C.C.MobileIPv43,598
AS135607Infinivan IncorporatedResidentialIPv4 IPv63,371
AS45903CMC Telecom Infrastructure CompanyResidentialIPv4 IPv63,062
AS9848SEJONG NETWORKSResidentialIPv4 IPv62,545
AS132827GATEWAY INCUnclassifiedIPv42,197

All 66 downstreams →

Adjacency

Adjacent networks

All 112

Every AS seen directly next to AS15412 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS6939Hurricane Electric LLCTransitIPv4 IPv6168,638
AS9304HGC Global Communications LimitedHostingIPv4 IPv661,014
AS18101Reliance Communications Ltd.DAKC MUMBAIUnclassifiedIPv4 IPv643,544
AS1299Arelion Sweden ABTransitIPv4 IPv627,877
AS8452IDDQD-ASResidentialIPv4 IPv626,884
AS5416B.S.C.UnclassifiedIPv4 IPv625,053
AS9848SEJONG NETWORKSResidentialIPv4 IPv620,911
AS38855Taiwan Digital Streaming Co.UnclassifiedIPv4 IPv612,849
AS2914NTT America, Inc.TransitIPv4 IPv612,731
AS33788Kanar Telecommunication (Canar Telecom Co.Ltd)UnclassifiedIPv4 IPv611,818

All 112 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-11 10:00 UTC by route-views2,rrc00, as seen from 74 BGP vantage points across 73.24M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.

Inferred from path position, not from any declaration by either party. A network appearing here is carrying these routes; whether that is a paid transit arrangement, a backup, or something else is not something routing data can tell you. 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.

Cross-check against RIPEstat or BGP.tools, which observe from a different and larger set of vantage points.