asn.dev

Observed topology

AS63981 NTDKL-HK - 43/F, AIA Tower, 183 Electric Road, North Point, Hong Kong

Unclassified APNIC NSP

Upstreams 17 carry this network
Downstreams 1 this network carries
Adjacent (IPv4) 19
Adjacent (IPv6) 11
Upstream graph Who carries AS63981, and who carries them, drawn as a map up to the transit-free core. 6 exchanges Where AS63981 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

All 17

Networks observed carrying traffic for AS63981: 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 IPv6648
AS9304HGC Global Communications LimitedHostingIPv4 IPv6622
AS3491PCCW Global (HK) Ltd.TransitIPv4 IPv6384
AS174Cogent Communications, LLCTransitIPv4 IPv6146
AS3356Level 3 Parent, LLCTransitIPv4 IPv6103
AS6453TATA COMMUNICATIONS (AMERICA) INCTransitIPv4 IPv676
AS21859Zenlayer IncHostingIPv4 IPv666
AS4637Telstra GlobalUnclassifiedIPv4 IPv656
AS10103HK Broadband Network Ltd.ResidentialIPv456
AS2914NTT America, Inc.TransitIPv4 IPv655

All 17 upstreams →

Transit

Downstream networks

inferred

Networks for which AS63981 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS142292NOVA TECHNOLOGY DEVELOPMENT (HONG KONG) LIMITED (SINGAPORE BRANCH)UnclassifiedIPv4116

Adjacency

Adjacent networks

All 19

Every AS seen directly next to AS63981 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS6939Hurricane Electric LLCTransitIPv4 IPv6662
AS9304HGC Global Communications LimitedHostingIPv4 IPv6622
AS3491PCCW Global (HK) Ltd.TransitIPv4 IPv6384
AS174Cogent Communications, LLCTransitIPv4 IPv6146
AS6453TATA COMMUNICATIONS (AMERICA) INCTransitIPv4 IPv6138
AS142292NOVA TECHNOLOGY DEVELOPMENT (HONG KONG) LIMITED (SINGAPORE BRANCH)UnclassifiedIPv4116
AS3356Level 3 Parent, LLCTransitIPv4 IPv6103
AS4637Telstra GlobalUnclassifiedIPv4 IPv688
AS21859Zenlayer IncHostingIPv4 IPv666
AS10103HK Broadband Network Ltd.ResidentialIPv456

All 19 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.