AS3662Joint Universities Computer Centre Limited
Hong Kong SAR ChinaRegistryAPNICTypeEyeballAs of 11th November 2026, AS3662 (Joint Universities Computer Centre…), an access network registered in Hong Kong SAR China with APNIC, originates 7 IPv4 prefixes covering 1.8k addresses and 11 IPv6 prefixes. By IPv4 address space that makes it the 30,398th-largest of the 80,747 networks we see originating IPv4, and the 367th-largest of 760 in Hong Kong SAR China. It is seen behind 7 upstream networks, most often AS17824 (Pacific One Net Limited AS number) and AS6939 (Hurricane Electric LLC), and in front of 9 downstream networks. None of its announcements have a valid RPKI ROA. 50% of its routes reach at least 90% of full-feed peers.
At a glance
IPv4 prefixes
IPv6 prefixes
IPv4 addresses
IPv6 /64s
Upstream graph
The networks AS3662 is seen behind, one and two hops out, drawn from real AS paths.
Networks observed one and two hops upstream of AS3662 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
40
adjacent networks
- Upstreams
- 718%
- Peers
- 2460%
- Downstreams
- 923%
Networks carrying this one's traffic toward the rest of the internet.
| Network | Country | Relationship | Paths | Vantage pts |
|---|---|---|---|---|
| AS17824Pacific One Net Limited AS number | HK | Peer | 5,114 | 73 |
| AS6939Hurricane Electric LLC |  US | Peer | 907 | 64 |
| AS4635HKIX Route Servers | HK | Peer | 649 | 19 |
| AS132337Axclusive |  SG | Adjacent | 108 | 2 |
| AS24482SG.GS | SG | Peer | 107 | 3 |
| AS49544i3D.net B.V |  NL | Peer | 105 | 2 |
| AS137207Joint Universities Computer Centre Limited | HK | Peer | 99 | 6 |
Prefixes
The largest blocks AS3662 originates, widest first.
| Prefix | Addresses | Visibility |
|---|---|---|
| 175.159.254.0/24 | 256 | 76/76 |
| 192.245.196.0/24 | 256 | 76/76 |
| 202.40.218.0/24 | 256 | 76/76 |
| 202.40.221.0/24 | 256 | 76/76 |
| 203.188.112.0/24 | 256 | 76/76 |
| 203.188.117.0/24 | 256 | 76/76 |
| 203.188.118.0/24 | 256 | 76/76 |
| 2001:ce0::/32 | 4.3B × /64 | 62/63 |
| 2001:ce0:1::/48 | 65.5k × /64 | 62/63 |
| 2001:ce0:1:1::/64 | 1 × /64 | 1/63 |
Routing health
How AS3662'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%18
Propagation
- Globally propagated90% of full-feed peers or more50.0%9
- Partially propagated40% to 90%0.0%0
- Seen by few peersUnder 40%50.0%9
Prefix sizes
IPv4 — 7 prefixes
IPv6 — 11 prefixes
- /324.3B × /649.1%1
- /4865.5k × /649.1%1
- /49 and longerAggregated81.8%9
Recent changes
Announcements that started or stopped since 12th Oct 2026.
No announcement by AS3662 started or stopped in this period.
Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.