asn.dev

Observed topology

AS9924 TFN-TW - Taiwan Fixed Network, Telco and Network Service Provider.

Residential APNIC

Upstreams 18 carry this network
Downstreams 47 this network carries
Adjacent (IPv4) 69
Adjacent (IPv6) 27
Upstream graph Who carries AS9924, and who carries them, drawn as a map up to the transit-free core. 8 exchanges Where AS9924 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 18

Networks observed carrying traffic for AS9924: 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
AS3491PCCW Global (HK) Ltd.TransitIPv4 IPv625,698
AS6939Hurricane Electric LLCTransitIPv4 IPv62,025
AS9505Taiwan Internet GatewayUnclassifiedIPv41,373
AS4637Telstra GlobalUnclassifiedIPv4845
AS9002RETN LimitedUnclassifiedIPv4 IPv6611
AS2914NTT America, Inc.TransitIPv4591
AS9304HGC Global Communications LimitedHostingIPv4 IPv6357
AS24482SG.GSHostingIPv4 IPv6222
AS58453China Mobile International LimitedUnclassifiedIPv4 IPv6131
AS7473Singapore Telecommunications LtdUnclassifiedIPv4125

All 18 upstreams →

Transit

Downstream networks

All 47

Networks for which AS9924 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS24158Taiwan Mobile Co., Ltd.UnclassifiedIPv4 IPv647,052
AS38841kbro CO. Ltd.UnclassifiedIPv4 IPv622,968
AS24164UNION BROADBAND NETWORKUnclassifiedIPv4 IPv613,624
AS131611San Da Cable TV Co., Ltd.UnclassifiedIPv45,244
AS24163UNION BROADBAND NETWORKUnclassifiedIPv4 IPv63,447
AS24165UNION BROADBAND NETWORKUnclassifiedIPv4 IPv63,239
AS131602Hsin Yeong An Cable TV Co., Ltd.UnclassifiedIPv42,579
AS18429Extra-Lan Technologies Co., LTDUnclassifiedIPv4 IPv62,538
AS18415B-WIZ TechnologyUnclassifiedIPv4979
AS131628Tai-Fu Cloud Co., Ltd.UnclassifiedIPv4955

All 47 downstreams →

Adjacency

Adjacent networks

All 72

Every AS seen directly next to AS9924 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS3491PCCW Global (HK) Ltd.TransitIPv4 IPv674,221
AS24158Taiwan Mobile Co., Ltd.UnclassifiedIPv4 IPv647,052
AS38841kbro CO. Ltd.UnclassifiedIPv4 IPv623,203
AS6939Hurricane Electric LLCTransitIPv4 IPv620,193
AS24164UNION BROADBAND NETWORKUnclassifiedIPv4 IPv613,624
AS9002RETN LimitedUnclassifiedIPv4 IPv613,231
AS2914NTT America, Inc.TransitIPv4 IPv610,134
AS9505Taiwan Internet GatewayUnclassifiedIPv4 IPv66,983
AS131611San Da Cable TV Co., Ltd.UnclassifiedIPv45,244
AS15412Flag Telecom UK LimitedUnclassifiedIPv44,003

All 72 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-10 10:00 UTC by route-views2,rrc00, as seen from 74 BGP vantage points across 71.97M 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.