Data as of Nov 8, 2026
203.188.64.0/22
No anonymizer space · no proxy exits in 30 daysThe Chinese University of Hong Kong · space held by Joint Universities Computer Centre Limited
Registrations in this block
The registry's network records over this block, widest first, each under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 203.188.64.0/18 | 16,384 | JUCC-BLK3 | Joint Universities Computer Centre Limited (ORG-JUCC1-AP) · HK | ALLOCATED PORTABLE | — | hartech@ |
| └ 203.188.64.0/20 | 4,096 | CUHK-HK | The Chinese University of Hong Kong | ASSIGNED NON-PORTABLE | — | hartech@ via JUCC-BLK3 |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
Network & registry
Announced by
Covering announcement 203.188.64.0/20
- Prefix
- 203.188.64.0/20
- Announced by
- AS3661 The Chinese University of Hong Kong
- Type
- Business
- RPKI
- No RPKI
- Netname
- CUHK-HK
- Registrant
- The Chinese University of Hong Kong
- RIR
- APNIC
Registry
Holder
- Organization
- Joint Universities Computer Centre Limited
- Handle
- ORG-JUCC1-AP
- Range
- 203.
188. 64. 0/ 18 - Registration type
- ALLOCATED PORTABLE
Origin network
AS3661
HK
- Name
- The Chinese University of Hong Kong
- Type
- Education
- Registered
- Aug 1, 2002
- Domain
- cuhk.edu.hk
- Industry
- Colleges, Universities, and Professional Schools
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 203.188.64.0/20
203.188.64.0/20
Routing history
- Pattern
- Stable
- First seen
- Jul 2005
- Current origin since
- Jul 2005 · 21 yr
- Origin networks
- 1
IRR
Route objects on 203.188.64.0/20
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS3661 | RADB | Nexusguard (Customer Route) | MAINT-AS45474 | Nov 13, 2023 |
| AS3661 | NTTCOM | CMI IP Transit | MAINT-CMI-INT-HK | Jan 8, 2018 |
| AS3662 not the origin | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Aug 17, 2004 |
| AS3662 not the origin | NTTCOM | Proxy-registered route object | MAINT-AS9304 | Jul 6, 2005 |
| AS3662 not the origin | RADB | HGC (customer route) | MAINT-AS9304 | Nov 13, 2023 |
| AS4641 not the origin | NTTCOM | Proxy-registered route object | MAINT-NTT-HK | Nov 28, 2008 |
| AS9269 not the origin | RADB | HKBN(customer route) | MAINT-AS9269 | Nov 13, 2023 |
| AS9269 not the origin | NTTCOM | HKBN as object (AS9269) | MAINT-HKBN | Oct 19, 2017 |
| AS10103 not the origin | RADB | HKBN(customer route) | MAINT-AS9269 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 203.
188. 64. 0/ 20 - Netname
- CUHK-HK
- Registrant
- The Chinese University of Hong Kong
- Registrant country
- HK
- Organization
- The Chinese University of Hong Kong
- Org country
- HK
- Type
- ASSIGNED NON-PORTABLE
- Created
- Not stated by the registry
- Updated
- Sep 4, 2008
- Maintainer
- MAINT-JUCC-AP
- RIR
- APNIC
- Country
- HK
- Delegated
- Feb 24, 2004
- Status
- assigned
Report abuse
Abuse contact
- hartech@
jucc. edu. hk - Name
- ABUSE JUCCHK
- Handle
- AJ481-AP