Data as of Nov 7, 2026
123.255.64.0/21
No anonymizer space · no proxy exits in 30 daysThe Chinese University of Hong Kong
Network & registry
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 this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Apr 2015
- Current origin since
- Apr 2015 · 12 yr
- Origin networks
- 1
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS3661 | APNIC | The Chinese University of Hong Kong | MAINT-CUHKNET-HK | Mar 23, 2015 |
| AS3661 | RADB | HKBN(customer route) | MAINT-AS9269 | Nov 13, 2023 |
| AS3662 not the origin | RADB | HKBN(customer route) | MAINT-AS9269 | Nov 13, 2023 |
| 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 |
IRR inside
Route objects inside
| Prefix | Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|---|
| 123.255.64.0/24 | AS45474 | RADB | Nexusguard (Customer Route) | MAINT-AS45474 | Nov 13, 2023 |
| 123.255.65.0/24 | AS45474 | RADB | Nexusguard (Customer Route) | MAINT-AS45474 | Nov 13, 2023 |
| 123.255.66.0/24 | AS45474 | RADB | Nexusguard (Customer Route) | MAINT-AS45474 | Nov 13, 2023 |
| 123.255.67.0/24 | AS45474 | RADB | Nexusguard (Customer Route) | MAINT-AS45474 | Nov 13, 2023 |
| 123.255.68.0/24 | AS45474 | RADB | Nexusguard (Customer Route) | MAINT-AS45474 | Nov 13, 2023 |
| 123.255.69.0/24 | AS45474 | RADB | Nexusguard (Customer Route) | MAINT-AS45474 | Nov 13, 2023 |
| 123.255.70.0/24 | AS45474 | RADB | Nexusguard (Customer Route) | MAINT-AS45474 | Nov 13, 2023 |
| 123.255.71.0/24 | AS45474 | RADB | Nexusguard (Customer Route) | MAINT-AS45474 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 123.
255. 64. 0 - 123. 255. 87. 255 - 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
- Jun 15, 2009
- Status
- assigned
Report abuse
Abuse contact
- noc-admin@
cuhk. edu. hk - Name
- ABUSE CUHKNETHK
- Handle
- AC2019-AP