subnet.im

AS38623Metfone (Viettel Cambodia)

CambodiaRegistryAPNICTypeEyeball

As of 26th September 2026, AS38623 (Metfone (Viettel Cambodia)), an access network registered in Cambodia with APNIC, originates 836 IPv4 prefixes covering 1.5M addresses and 17 IPv6 prefixes. By IPv4 address space that makes it the 356th-largest of the 79,480 networks we see originating IPv4, and the largest of 98 in Cambodia. It is seen behind 32 upstream networks, most often AS23673 (Cogetel Online, Cambodia, ISP) and AS9902 (NTC Neocom), and in front of 64 downstream networks. 69% of its announcements have a valid RPKI ROA; 264 are RPKI-invalid. 67% 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

836

IPv6 prefixes

17

IPv4 addresses

1.5M

IPv6 /64s

8.3B

Upstream graph

The networks AS38623 is seen behind, one and two hops out, drawn from real AS paths.

AS38623Toward the internet core
Upstream graph for AS38623: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS38623Metfone (Viettel …This networkAS7552Viettel GroupAS9304HGC Global Commun…AS9902NTC NeocomAS23673Cogetel Online, C…AS23764China Telecom Glo…AS2914NTT America, Inc.AS15412Flag Telecom UK L…AS3491PCCW Global (HK) …AS1299Arelion (fka. Tel…AS58453China Mobile Inte…AS55329Telcotech Ltd.AS7713PT Telkom Indones…

Networks observed one and two hops upstream of AS38623 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

203

adjacent networks

Upstreams
3216%
Peers
10753%
Downstreams
6432%

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

Upstreams of AS38623
NetworkCountryRelationshipPathsVantage pts
AS23673Cogetel Online, Cambodia, ISPKHPeer41,0091
AS9902NTC NeocomKHPeer14,88981
AS23764China Telecom GlobalHKPeer6,615126
AS7552Viettel GroupVNPeer4,95780
AS9304HGC Global Communications LimitedHKPeer4,52376
AS3491PCCW Global (HK) Ltd.HKPeer4,17844
AS2914NTT America, Inc.USPeer2,91465
AS4637Telstra International LimitedHKPeer1,80169
AS1299Arelion (fka. Telia Carrier)SEPeer1,68159
AS9002RETN LimitedGBPeer5617

Prefixes

All 853

The largest blocks AS38623 originates, widest first.

Largest prefixes originated by AS38623
PrefixAddressesVisibility
36.37.128.0/1732.8k81/81
100.128.0.0/1732.8k1/81
100.136.0.0/1732.8k1/81
100.149.0.0/1732.8k1/81
100.149.128.0/1732.8k1/81
100.150.0.0/1732.8k1/81
100.150.128.0/1732.8k1/81
100.151.0.0/1732.8k1/81
100.153.0.0/1732.8k1/81
100.154.0.0/1732.8k1/81

Routing health

How AS38623'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

  • Valid69.1%589
  • Invalid30.9%264
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more67.3%574
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%32.7%279

Prefix sizes

IPv4 — 836 prefixes

IPv6 — 17 prefixes

  • /324.3B × /645.9%1
  • /36268M × /6488.2%15
  • /4865.5k × /645.9%1

Recent changes

Announcements that started or stopped since 27th Aug 2026.

  • Withdrawn175.100.61.0/2421st Sept 2026
  • Withdrawn175.100.62.0/2421st Sept 2026
  • Withdrawn175.100.69.0/2421st Sept 2026
  • Withdrawn175.100.78.0/2421st Sept 2026
  • Withdrawn36.255.56.0/2221st Sept 2026
  • Withdrawn36.37.184.0/2421st Sept 2026
  • Withdrawn36.37.231.0/2421st Sept 2026
  • Withdrawn36.37.235.0/2421st Sept 2026
  • Withdrawn36.37.238.0/2421st Sept 2026

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