subnet.im

AS138400Chu Hai College of Higher Education

Hong Kong SAR ChinaRegistryAPNIC

As of 10th November 2026, AS138400 (Chu Hai College of Higher Education), a network registered in Hong Kong SAR China with APNIC, originates 2 IPv4 prefixes covering 512 addresses. By IPv4 address space that makes it the 49,312th-largest of the 80,733 networks we see originating IPv4, and the 543rd-largest of 760 in Hong Kong SAR China. It is seen behind 1 upstream network, most often AS9381 (HKBN Enterprise Solutions HK Limited). None of its announcements have a valid RPKI ROA. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

2

IPv6 prefixes

0

IPv4 addresses

512

IPv6 /64s

0

Upstream graph

The networks AS138400 is seen behind, one and two hops out, drawn from real AS paths.

AS138400Toward the internet core
Upstream graph for AS138400: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS138400Chu Hai College o…This networkAS9381HKBN Enterprise S…AS174Cogent Communicat…AS6453TATA Communicatio…

Networks observed one and two hops upstream of AS138400 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

2

adjacent networks

Upstreams
150%
Peers
150%
Downstreams
00%

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

Upstreams of AS138400
NetworkCountryRelationshipPathsVantage pts
AS9381HKBN Enterprise Solutions HK LimitedHKPeer15276

Prefixes

The largest blocks AS138400 originates, widest first.

Largest prefixes originated by AS138400
PrefixAddressesVisibility
103.124.155.0/2425676/76
103.139.142.0/2425676/76

Routing health

How AS138400'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

  • Valid0.0%0
  • Invalid0.0%0
  • No ROA100.0%2

Propagation

  • Globally propagated90% of full-feed peers or more100.0%2
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 2 prefixes

Recent changes

Announcements that started or stopped since 11th Oct 2026.

No announcement by AS138400 started or stopped in this period.

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