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AS18233Philippine Telegraph & Telephone Corporation

PhilippinesRegistryAPNICTypeEyeball

As of 11th November 2026, AS18233 (Philippine Telegraph & Telephone…), an access network registered in the Philippines with APNIC, originates 44 IPv4 prefixes covering 20.2k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 7,166th-largest of the 80,747 networks we see originating IPv4, and the 21st-largest of 473 in the Philippines. It is seen behind 4 upstream networks, most often AS63927 (RISE) and AS135607 (Infinivan Incorporated), and in front of 9 downstream networks. 96% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 96% 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

44

IPv6 prefixes

1

IPv4 addresses

20.2k

IPv6 /64s

4.3B

Upstream graph

The networks AS18233 is seen behind, one and two hops out, drawn from real AS paths.

AS18233Toward the internet core
Upstream graph for AS18233: 10 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS18233Philippine Telegr…This networkAS4775Globe TelecomsAS18392Globe Telecom IX …AS63927RISEAS135607Infinivan Incorpo…AS1299Arelion (fka. Tel…AS6939Hurricane Electri…AS3257GTT Communication…AS137409GSL Networks Pty …AS3356Lumen (Level 3)AS15412Flag Telecom UK L…

Networks observed one and two hops upstream of AS18233 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

28

adjacent networks

Upstreams
414%
Peers
1554%
Downstreams
932%

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

Upstreams of AS18233
NetworkCountryRelationshipPathsVantage pts
AS63927RISEPHPeer4,54576
AS135607Infinivan IncorporatedPHPeer2,256139
AS18392Globe Telecom IX NetworkPHAdjacent281
AS4775Globe TelecomsPHAdjacent71

Prefixes

All 45

The largest blocks AS18233 originates, widest first.

Largest prefixes originated by AS18233
PrefixAddressesVisibility
203.160.160.0/198.2k76/76
45.195.28.0/221k76/76
45.200.6.0/2351276/76
45.195.28.0/2425676/76
45.195.29.0/2425676/76
45.195.30.0/2425676/76
45.195.31.0/2425676/76
45.199.177.0/2425676/76
45.200.6.0/2425676/76
45.200.7.0/2425676/76

Routing health

How AS18233'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

  • Valid95.6%43
  • Invalid0.0%0
  • No ROA4.4%2

Propagation

  • Globally propagated90% of full-feed peers or more95.6%43
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%4.4%2

Prefix sizes

IPv4 — 44 prefixes

IPv6 — 1 prefixes

  • /324.3B × /64100.0%1

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS18233 started or stopped in this period.

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