asn.dev

Observed topology

AS38732 CMCTELECOM-VN CMC Telecom Infrastructure Company

Unclassified APNIC

Upstreams 1 carry this network
Downstreams 15 this network carries
Adjacent (IPv4) 16
Adjacent (IPv6) 10
Upstream graph Who carries AS38732, and who carries them, drawn as a map up to the transit-free core. 0 exchanges Where AS38732 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS38732: 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
AS45903CMC Telecom Infrastructure CompanyResidentialIPv4 IPv62,605

Transit

Downstream networks

All 15

Networks for which AS38732 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS131353NhanHoa Software companyUnclassifiedIPv4721
AS135967Bach Kim Network solutions Join stock companyUnclassifiedIPv4 IPv6332
AS135981VisualViet Company LimitedUnclassifiedIPv4 IPv6192
AS140829VNNIC-4byte-ASBLOCK-APUnclassifiedIPv4180
AS151863PSG JOINT STOCK COMPANYUnclassifiedIPv4180
AS140814Floor 5, 255 Tran Dang Ninh, Dich Vong, Cau Giay District, Ha Noi CityUnclassifiedIPv4 IPv6157
AS131386Long Van System Solution JSCUnclassifiedIPv4 IPv6131
AS151873TOTHOST SOLUTIONS AND TECHNOLOGIES COMPANY LIMITEDUnclassifiedIPv4 IPv696
AS153683VIETNAM V2 INFORMATION SECURE JOINT STOCK COMPANYUnclassifiedIPv4 IPv696
AS154247MCO HA NOI TECHNOLOGY COMPANY LIMITEDUnclassifiedIPv4 IPv696

All 15 downstreams →

Adjacency

Adjacent networks

All 16

Every AS seen directly next to AS38732 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS45903CMC Telecom Infrastructure CompanyResidentialIPv4 IPv65,181
AS131353NhanHoa Software companyUnclassifiedIPv4721
AS135967Bach Kim Network solutions Join stock companyUnclassifiedIPv4 IPv6368
AS135981VisualViet Company LimitedUnclassifiedIPv4 IPv6192
AS140829VNNIC-4byte-ASBLOCK-APUnclassifiedIPv4180
AS151863PSG JOINT STOCK COMPANYUnclassifiedIPv4180
AS140814Floor 5, 255 Tran Dang Ninh, Dich Vong, Cau Giay District, Ha Noi CityUnclassifiedIPv4 IPv6157
AS131386Long Van System Solution JSCUnclassifiedIPv4 IPv6131
AS151873TOTHOST SOLUTIONS AND TECHNOLOGIES COMPANY LIMITEDUnclassifiedIPv4 IPv696
AS153683VIETNAM V2 INFORMATION SECURE JOINT STOCK COMPANYUnclassifiedIPv4 IPv696

All 16 adjacent →

Provenance

Where this comes from

Derived from routing tables collected at 2026-10-25 12:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.17M 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.