subnet.im

AS272937TUNORTETV TELECOMUNICACIONES S.A.S.

ColombiaRegistryLACNIC

As of 29th September 2026, AS272937 (TUNORTETV TELECOMUNICACIONES S.A.S.), a network registered in Colombia with LACNIC, originates 12 IPv4 prefixes covering 4.1k addresses and 10 IPv6 prefixes. By IPv4 address space that makes it the 17,092nd-largest of the 79,615 networks we see originating IPv4, and the 46th-largest of 354 in Colombia. It is seen behind 5 upstream networks, most often AS18678 (INTERNEXA S.A. E.S.P) and AS262589 (SAMM (Internexa)), and in front of 2 downstream networks. Every one of its announcements has 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

12

IPv6 prefixes

10

IPv4 addresses

4.1k

IPv6 /64s

2.2B

Upstream graph

The networks AS272937 is seen behind, one and two hops out, drawn from real AS paths.

AS272937Toward the internet core
Upstream graph for AS272937: 11 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS272937TUNORTETV TELECOM…This networkAS3356Lumen (Level 3)AS18678INTERNEXA S.A. E.…AS52468UFINET PANAMA S.A.AS262186TV AZTECA SUCURSA…AS262589SAMM (Internexa)AS2914NTT America, Inc.AS3549Lumen (fka. Globa…AS6939Hurricane Electri…AS1299Arelion (fka. Tel…AS6762Telecom Italia Sp…AS52320V.tal (GlobeNet)

Networks observed one and two hops upstream of AS272937 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

15

adjacent networks

Upstreams
533%
Peers
853%
Downstreams
213%

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

Upstreams of AS272937
NetworkCountryRelationshipPathsVantage pts
AS18678INTERNEXA S.A. E.S.PCOPeer1,046147
AS262589SAMM (Internexa)BRPeer577131
AS52468UFINET PANAMA S.A.PAPeer226145
AS3356Lumen (Level 3)USPeer147147
AS262186TV AZTECA SUCURSAL COLOMBIACOPeer22

Prefixes

The largest blocks AS272937 originates, widest first.

Largest prefixes originated by AS272937
PrefixAddressesVisibility
38.4.112.0/221k82/82
38.252.236.0/2351282/82
38.4.116.0/2425682/82
38.4.117.0/2425681/82
38.4.118.0/2425681/82
38.19.49.0/2425682/82
38.21.112.0/2425682/82
38.52.207.0/2425682/82
38.211.102.0/2425682/82
38.224.106.0/2425682/82

Routing health

How AS272937'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

  • Valid100.0%22
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%22
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 12 prefixes

IPv6 — 10 prefixes

  • /35537M × /6420.0%2
  • /36268M × /6430.0%3
  • /37134M × /6410.0%1
  • /3867.1M × /6420.0%2
  • /3933.6M × /6420.0%2

Recent changes

Announcements that started or stopped since 30th Aug 2026.

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