subnet.im

AS3363Hong Kong University of Science and Technology

Hong Kong SAR ChinaRegistryAPNIC

As of 11th November 2026, AS3363 (Hong Kong University of Science and…), a network registered in Hong Kong SAR China with APNIC, originates 12 IPv4 prefixes covering 79.6k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 2,844th-largest of the 80,747 networks we see originating IPv4, and the 51st-largest of 760 in Hong Kong SAR China. It is seen behind 3 upstream networks, most often AS3662 (Joint Universities Computer Centre…) and AS10103 (HK Broadband Network Ltd.). 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

12

IPv6 prefixes

1

IPv4 addresses

79.6k

IPv6 /64s

65.5k

Upstream graph

The networks AS3363 is seen behind, one and two hops out, drawn from real AS paths.

AS3363Toward the internet core
Upstream graph for AS3363: 9 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS3363Hong Kong Univers…This networkAS3662Joint Universitie…AS10103HK Broadband Netw…AS137207Joint Universitie…AS6939Hurricane Electri…AS17824Pacific One Net L…AS4635HKIX Route ServersAS9269Hong Kong Broadba…AS11537Internet2AS23855Singapore Advance…

Networks observed one and two hops upstream of AS3363 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

6

adjacent networks

Upstreams
350%
Peers
350%
Downstreams
00%

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

Upstreams of AS3363
NetworkCountryRelationshipPathsVantage pts
AS3662Joint Universities Computer Centre LimitedHKPeer852133
AS10103HK Broadband Network Ltd.HKPeer7272
AS137207Joint Universities Computer Centre LimitedHKPeer506

Prefixes

The largest blocks AS3363 originates, widest first.

Largest prefixes originated by AS3363
PrefixAddressesVisibility
143.89.0.0/1665.5k76/76
175.159.96.0/198.2k76/76
203.188.104.0/212k76/76
175.159.240.0/221k76/76
202.125.228.0/221k76/76
202.14.80.0/2425676/76
202.40.138.0/2425676/76
202.40.139.0/2425676/76
202.125.224.0/2425676/76
202.125.225.0/2425676/76

Routing health

How AS3363'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%13

Propagation

  • Globally propagated90% of full-feed peers or more100.0%13
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 12 prefixes

IPv6 — 1 prefixes

  • /4865.5k × /64100.0%1

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS3363 started or stopped in this period.

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