subnet.im

AS7651Lingnan University

Hong Kong SAR ChinaRegistryAPNIC

As of 11th November 2026, AS7651 (Lingnan University), a network registered in Hong Kong SAR China with APNIC, originates 13 IPv4 prefixes covering 21.2k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 6,924th-largest of the 80,747 networks we see originating IPv4, and the 98th-largest of 760 in Hong Kong SAR China. It is seen behind 2 upstream networks, most often AS3662 (Joint Universities Computer Centre…) and AS137207 (Joint Universities Computer Centre…). 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

13

IPv6 prefixes

1

IPv4 addresses

21.2k

IPv6 /64s

65.5k

Upstream graph

The networks AS7651 is seen behind, one and two hops out, drawn from real AS paths.

AS7651Toward the internet core
Upstream graph for AS7651: 6 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS7651Lingnan UniversityThis networkAS3662Joint Universitie…AS137207Joint Universitie…AS6939Hurricane Electri…AS17824Pacific One Net L…AS11537Internet2AS23855Singapore Advance…

Networks observed one and two hops upstream of AS7651 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

4

adjacent networks

Upstreams
250%
Peers
250%
Downstreams
00%

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

Upstreams of AS7651
NetworkCountryRelationshipPathsVantage pts
AS3662Joint Universities Computer Centre LimitedHKPeer998134
AS137207Joint Universities Computer Centre LimitedHKPeer524

Prefixes

The largest blocks AS7651 originates, widest first.

Largest prefixes originated by AS7651
PrefixAddressesVisibility
175.159.32.0/204.1k76/76
175.159.48.0/204.1k76/76
202.40.192.0/204.1k76/76
202.75.64.0/212k76/76
175.159.248.0/221k76/76
202.75.72.0/221k76/76
203.188.96.0/221k76/76
203.188.100.0/221k76/76
203.188.124.0/221k76/76
175.159.252.0/2351276/76

Routing health

How AS7651'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%14

Propagation

  • Globally propagated90% of full-feed peers or more100.0%14
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 13 prefixes

IPv6 — 1 prefixes

  • /4865.5k × /64100.0%1

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS7651 started or stopped in this period.

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