Observed topology

AS24138 CTTNET - China TieTong Telecommunications Corporation

Unclassified APNIC

Upstreams 2 carry this network

Downstreams 8 this network carries

Adjacent (IPv4) 10

Adjacent (IPv6) 0

Upstream graph Who carries AS24138, and who carries them, drawn as a map up to the transit-free core. 0 exchanges Where AS24138 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS24138: 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.

AS	Network	Type	Families	Paths seen
AS9394	China TieTong Telecommunications Corporation	Unclassified	IPv4	13,074
AS56048	China Mobile Communicaitons Corporation	Unclassified	IPv4	6

Transit

Downstream networks

inferred

Networks for which AS24138 was observed as the last hop before the origin, meaning it appears to provide them transit.

AS	Network	Type	Families	Paths seen
AS17964	Beijing Dian-Xin-Tong Network Technologies Co., Ltd.	Unclassified	IPv4	110
AS45058	Golden-Bridge Netcom communication Co.,LTD.	Unclassified	IPv4	49
AS23844	Beijing Guanghuan Xinwang Digital	Unclassified	IPv4	38
AS56019	Beijing ShuJuJia Technology Co., Ltd.	Unclassified	IPv4	33
AS56282	Beijing Internet Harbor Technology Co., Ltd	Unclassified	IPv4	26
AS18118	CITIC Networks Management Co.,Ltd.	Unclassified	IPv4	12
AS59089	NO.18 Building University of Technology	Unclassified	IPv4	2
AS131495	Beijing nine cloud infinite network technology co., LTD	Unclassified	IPv4	2

Adjacency

Adjacent networks

observed

Every AS seen directly next to AS24138 in a routing path, in either direction.

AS	Network	Type	Families	Paths seen
AS9394	China TieTong Telecommunications Corporation	Unclassified	IPv4	13,346
AS17964	Beijing Dian-Xin-Tong Network Technologies Co., Ltd.	Unclassified	IPv4	110
AS45058	Golden-Bridge Netcom communication Co.,LTD.	Unclassified	IPv4	49
AS23844	Beijing Guanghuan Xinwang Digital	Unclassified	IPv4	38
AS56019	Beijing ShuJuJia Technology Co., Ltd.	Unclassified	IPv4	33
AS56282	Beijing Internet Harbor Technology Co., Ltd	Unclassified	IPv4	26
AS18118	CITIC Networks Management Co.,Ltd.	Unclassified	IPv4	12
AS56048	China Mobile Communicaitons Corporation	Unclassified	IPv4	6
AS59089	NO.18 Building University of Technology	Unclassified	IPv4	2
AS131495	Beijing nine cloud infinite network technology co., LTD	Unclassified	IPv4	2

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-13 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 74.40M 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.