Data as of Nov 8, 2026
137.189.20.0/24
No anonymizer space · no proxy exits in 30 daysThe Chinese University of Hong Kong
Network & registry
Announced by
Covering announcement 137.189.0.0/16
- Prefix
- 137.189.0.0/16
- Announced by
- AS3661 The Chinese University of Hong Kong
- Type
- Business
- Proxy exits
- 108
- RPKI
- No RPKI
- Netname
- CUHKNET
- Registrant
- The Chinese University of Hong Kong
- RIR
- APNIC
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 137.189.0.0/16
137.189.0.0/16
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- May 2005 · 22 yr
- Origin networks
- 1
IRR
Route objects on 137.189.0.0/16
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS3661 | APNIC | Chinese University of Hong Kong (The) | MAINT-CUHKNET-HK | Nov 4, 2022 |
| AS3661 | NTTCOM | CMI IP Transit | MAINT-CMI-INT-HK | Jan 8, 2018 |
| AS3661 | RADB | HKT (Customer Route) | MAINT-AS4515 | Nov 13, 2023 |
| AS3662 not the origin | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Aug 30, 2005 |
| AS3662 not the origin | RADB | HGC (customer route) | MAINT-AS9304 | Nov 13, 2023 |
| AS3662 not the origin | NTTCOM | Proxy-registered route object | MAINT-AS9304 | Jul 6, 2005 |
| 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 |
| AS45474 not the origin | RADB | Nexusguard (Customer Route) | MAINT-AS45474 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 137.
189. 0. 0/ 16 - Netname
- CUHKNET
- Registrant
- The Chinese University of Hong Kong
- Registrant country
- HK
- Organization
- Not stated by the registry
- Type
- ALLOCATED PORTABLE
- Created
- Not stated by the registry
- Updated
- Dec 5, 2022
- Maintainer
- APNIC-HM
- RIR
- APNIC
- Country
- HK
- Delegated
- Dec 18, 1989
- Status
- assigned
Report abuse
Abuse contact
- noc-admin@
cuhk. edu. hk - Name
- ABUSE CUHKNETHK
- Handle
- AC2019-AP