The Chinese University of Hong Kong
AS3661 is The Chinese University of Hong Kong (cuhk.edu.hk). It announces 73,984 IPv4 addresses in 7 prefixes, and 2 IPv6 prefixes.
Hong Kong· APNIC· allocated 2002-08-01· education
Where its space is
The IPv4 it announces that IP Geolocation places, by country. A /24 counts for the AS announcing most of it.
- Hong Kong73,984 · 100.00%
Registry record
Its ASN Whois record, as the registry publishes it.
- handle
- ERX-CUHKNET
- name
- The Chinese University of Hong Kong
- org
- ORG-CUOH1-AP
- org name
- The Chinese University of Hong Kong
- org address
- Information Technology Service Centre, G/F., Pi-Chiu Building
- org country
- HK
- country
- HK
- source
- apnic
- updated
- 2022-12-05
- descr
- The Chinese University of Hong Kong / Information Technology Services Centre
- remarks
- This aut-num object created as part of the ER-Transfer from ARIN
- maintainer
- APNIC-HM
- maintainer email
- helpdesk@apnic.net
- abuse
- AC2019-AP
- abuse name
- ABUSE CUHKNETHK
- abuse email
- noc-admin@cuhk.edu.hk
- abuse kind
- role
- admin
- NA17-AP
- tech
- NT27-AP
What the databases see
Addresses each address-keyed database holds in the IPv4 it announces, as a share of that space, with its largest providers. Counts overlap.
- VPN IP84draytek0.11%
- proxyseller, geonix, dataimpulse0.09%
- None here
- None here
- None here
- None here
- Hosting IP6,9129.34%
- None here
- None here
- None here
- SSH IP580.08%
- SMTP IP120.02%
- 0.10%
IPv4 prefixes
Every IPv4 prefix BGP Route saw it announce. A prefix another AS also announces says so.
| PREFIX | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|
| 103.49.160.0/22 | Hong Kong | not found | 19 | 2026-10-02 |
| 123.255.64.0/21 | Hong Kong | not found | 19 | 2026-10-02 |
| 137.189.0.0/16 | Hong Kong | not found | 19 | 2026-10-02 |
| 137.189.196.0/24 | Hong Kong | not found | 19 | 2026-10-02 |
| 175.159.224.0/22 | Hong Kong | not found | 19 | 2026-10-02 |
| 202.40.216.0/24 | Hong Kong | not found | 19 | 2026-10-02 |
| 203.188.64.0/20 | Hong Kong | not found | 19 | 2026-10-02 |
IPv6 prefixes
Every IPv6 prefix BGP Route saw it announce.
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