subnet.im

AS28512Cablemas Telecomunicaciones SA de CV

MexicoRegistryLACNICTypeEyeball

As of 23rd October 2026, AS28512 (Cablemas Telecomunicaciones SA de CV), an access network registered in Mexico with LACNIC, originates 57 IPv4 prefixes covering 97.5k addresses and 43 IPv6 prefixes. By IPv4 address space that makes it the 2,438th-largest of the 79,652 networks we see originating IPv4, and the 22nd-largest of 495 in Mexico. It is seen behind 1 upstream network, most often AS28545 (Cablemas Telecomunicaciones SA de CV). 72% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

57

IPv6 prefixes

43

IPv4 addresses

97.5k

IPv6 /64s

40.4M

Upstream graph

The networks AS28512 is seen behind, one and two hops out, drawn from real AS paths.

AS28512Toward the internet core
Upstream graph for AS28512: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS28512Cablemas Telecomu…This networkAS28545Cablemas Telecomu…AS18734Operbes, S.A. de …AS23520Columbus Networks…

Networks observed one and two hops upstream of AS28512 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.

Neighbouring networks

3

adjacent networks

Upstreams
133%
Peers
267%
Downstreams
00%

Networks carrying this one's traffic toward the rest of the internet.

Upstreams of AS28512
NetworkCountryRelationshipPathsVantage pts
AS28545Cablemas Telecomunicaciones SA de CVMXPeer7,131141

Prefixes

All 100

The largest blocks AS28512 originates, widest first.

Largest prefixes originated by AS28512
PrefixAddressesVisibility
187.252.32.0/198.2k77/77
177.237.48.0/204.1k77/77
177.237.64.0/204.1k77/77
177.237.80.0/204.1k77/77
177.237.96.0/204.1k77/77
177.237.112.0/204.1k77/77
187.185.208.0/204.1k77/77
187.252.192.0/204.1k77/77
189.202.112.0/204.1k77/77
189.214.80.0/204.1k77/77

Routing health

How AS28512's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.

RPKI origin validation

  • Valid72.0%72
  • Invalid0.0%0
  • No ROA28.0%28

Propagation

  • Globally propagated90% of full-feed peers or more100.0%100
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 57 prefixes

IPv6 — 43 prefixes

  • /4016.8M × /644.7%2
  • /45524k × /6420.9%9
  • /4865.5k × /6474.4%32

Recent changes

Announcements that started or stopped since 23rd Sept 2026.

73 announced and 73 withdrawn in all; the most recent are shown.

Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.