subnet.im

AS28509izzi Telecom

MexicoRegistryLACNICTypeEyeball

As of 23rd October 2026, AS28509 (izzi Telecom), an access network registered in Mexico with LACNIC, originates 371 IPv4 prefixes covering 333k addresses and 110 IPv6 prefixes. By IPv4 address space that makes it the 907th-largest of the 79,659 networks we see originating IPv4, and the 7th-largest of 496 in Mexico. It is seen behind 6 upstream networks, most often AS18734 (Operbes, S.A. de C.V.) and AS174 (Cogent Communications, LLC), and in front of 2 downstream networks. 67% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. Over 99% of its routes reach at least 90% of full-feed peers, and 2 prefixes are also originated by another network.

At a glance

IPv4 prefixes

371

IPv6 prefixes

110

IPv4 addresses

333k

IPv6 /64s

130M

Upstream graph

The networks AS28509 is seen behind, one and two hops out, drawn from real AS paths.

AS28509Toward the internet core
Upstream graph for AS28509: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS28509izzi TelecomThis networkAS174Cogent Communicat…AS6762Telecom Italia Sp…AS18734Operbes, S.A. de …AS28545Cablemas Telecomu…AS32098Flō Networks (Tra…AS151326DCConnect Communi…AS1299Arelion (fka. Tel…AS52075Wifirst S.A.S.AS6461Zayo BandwidthAS2914NTT America, Inc.AS23520Columbus Networks…AS6939Hurricane Electri…

Networks observed one and two hops upstream of AS28509 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

21

adjacent networks

Upstreams
629%
Peers
1362%
Downstreams
210%

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

Upstreams of AS28509
NetworkCountryRelationshipPathsVantage pts
AS18734Operbes, S.A. de C.V.MXPeer18,222141
AS174Cogent Communications, LLCUSPeer7,29287
AS32098Flō Networks (Transtelco Inc.)USPeer5,448141
AS6762Telecom Italia Sparkle (Seabone)ITPeer2,62981
AS28545Cablemas Telecomunicaciones SA de CVMXPeer2,030141
AS28554Cablemas Telecomunicaciones SA de CVMXPeer171

Prefixes

All 481

The largest blocks AS28509 originates, widest first.

Largest prefixes originated by AS28509
PrefixAddressesVisibility
177.236.192.0/198.2k77/77
177.236.0.0/204.1k77/77
177.236.32.0/204.1k77/77
177.236.224.0/204.1k77/77
177.236.240.0/204.1k77/77
177.237.240.0/204.1k77/77
177.238.0.0/204.1k77/77
187.185.112.0/204.1k77/77
187.185.192.0/204.1k77/77
187.252.64.0/204.1k77/77

Routing health

How AS28509'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

  • Valid66.7%321
  • Invalid0.0%0
  • No ROA33.3%160

Propagation

  • Globally propagated90% of full-feed peers or more99.6%479
  • Partially propagated40% to 90%0.2%1
  • Seen by few peersUnder 40%0.2%1

Prefix sizes

IPv4 — 371 prefixes

IPv6 — 110 prefixes

  • /4016.8M × /646.4%7
  • /441M × /641.8%2
  • /45524k × /648.2%9
  • /4865.5k × /6483.6%92

Recent changes

Announcements that started or stopped since 23rd Sept 2026.

13 announced and 8 withdrawn in all; the most recent are shown.

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