asn.dev

Observed topology

AS4609 CTM-MO - Companhia de Telecomunicacoes de Macau SARL

Residential APNIC Cable/DSL/ISP

Upstreams 3 carry this network
Downstreams 7 this network carries
Adjacent (IPv4) 8
Adjacent (IPv6) 7
Upstream graph Who carries AS4609, and who carries them, drawn as a map up to the transit-free core. 0 exchanges Where AS4609 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS4609: 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
AS7617CTM (HK) LimitedResidentialIPv4 IPv64,906
AS58453China Mobile International LimitedUnclassifiedIPv496
AS24429Zhejiang Taobao Network Co.,LtdHostingIPv42

Transit

Downstream networks

inferred

Networks for which AS4609 was observed as the last hop before the origin, meaning it appears to provide them transit.

ASNetworkTypeFamiliesPaths seen
AS24429Zhejiang Taobao Network Co.,LtdHostingIPv4 IPv6306
AS139341ACEHostingIPv4 IPv6186
AS138164Macau University of Science and TechnologyUnclassifiedIPv4 IPv6158
AS7582University of MacauEducationIPv4 IPv6153
AS13335Cloudflare, Inc.HostingIPv4 IPv693
AS136167CHINA TELECOM (MACAU) COMPANY LIMITEDUnclassifiedIPv666
AS4058CITIC Telecom International CPC LimitedUnclassifiedIPv42

Adjacency

Adjacent networks

observed

Every AS seen directly next to AS4609 in a routing path, in either direction.

ASNetworkTypeFamiliesPaths seen
AS7617CTM (HK) LimitedResidentialIPv4 IPv65,868
AS24429Zhejiang Taobao Network Co.,LtdHostingIPv4 IPv6308
AS139341ACEHostingIPv4 IPv6186
AS138164Macau University of Science and TechnologyUnclassifiedIPv4 IPv6158
AS7582University of MacauEducationIPv4 IPv6153
AS58453China Mobile International LimitedUnclassifiedIPv4102
AS13335Cloudflare, Inc.HostingIPv4 IPv693
AS136167CHINA TELECOM (MACAU) COMPANY LIMITEDUnclassifiedIPv666
AS4058CITIC Telecom International CPC LimitedUnclassifiedIPv46

Provenance

Where this comes from

Derived from routing tables collected at 2026-11-02 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 74.44M 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.