2405:3000::/32

Originated by AS3661
AS Name: The Chinese University of Hong Kong

Overview
Connectivity
Whois
DNS
Validation

Registered on: 22 Feb 2008 (18 years old)

Registered to: A91A78A7 (apnic)

Prefix status: Active, Allocated under APNIC

Size of prefix: 65536 /48's

Upstreams

AS3662 - Joint Universities Computer Centre Limited
AS4641 - The Hong Kong Internet Exchange Limited
AS6939 - Hurricane Electric LLC

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description
	AS3662	Joint Universities Computer Centre Limited
	AS4641	The Hong Kong Internet Exchange Limited
	AS6939	Hurricane Electric LLC

Peers

	ASN	Description
	AS36236	NetActuate, Inc
	AS24482	SG.GS
	AS49544	i3D.net B.V
	AS4635	HKIX Route Servers
	AS3662	Joint Universities Computer Centre Limited
	AS137207	Joint Universities Computer Centre Limited
	AS4641	The Hong Kong Internet Exchange Limited
	AS6939	Hurricane Electric LLC

inet6num:       2405:3000::/32
netname:        CUHKNET-HK
descr:          The Chinese University of Hong Kong
country:        HK
org:            ORG-CUOH1-AP
admin-c:        NA17-AP
tech-c:         NT27-AP
abuse-c:        AC2019-AP
status:         ALLOCATED PORTABLE
remarks:        --------------------------------------------------------
remarks:        To report network abuse, please contact mnt-irt
remarks:        For troubleshooting, please contact tech-c and admin-c
remarks:        Report invalid contact via www.apnic.net/invalidcontact
remarks:        --------------------------------------------------------
mnt-by:         APNIC-HM
mnt-lower:      MAINT-CUHKNET-HK
mnt-routes:     MAINT-CUHKNET-HK
mnt-irt:        IRT-CUHKNET-HK
last-modified:  2022-12-05T02:41:49Z
source:         APNIC


organisation:   ORG-CUOH1-AP
org-name:       The Chinese University of Hong Kong
org-type:       LIR
country:        HK
address:        ********
address:        ********
phone:          ********
fax-no:         ********
# Email removed, Log into bgp.tools to see whois emails/phone numbers
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:14:42Z
source:         APNIC

Last Update: 2026-06-03T03:22:53Z UTC

Remove auto generated reverse DNS entries

	Address	PTR
	2405:3000:3:4::12	big17.itsc.cuhk.edu.hk.
	2405:3000:3:4::13	big18.itsc.cuhk.edu.hk.
	2405:3000:3:4::1d	s4vm1.itsc.cuhk.edu.hk.
	2405:3000:3:4::1e	s4vm2.itsc.cuhk.edu.hk.
	2405:3000:3:4:8::1	ce02.atlas.cuhk.edu.hk.
	2405:3000:3:4:8::2	px01.atlas.cuhk.edu.hk.
	2405:3000:3:4:8::3	px02.atlas.cuhk.edu.hk.
	2405:3000:3:4:8::4	node001.atlas.cuhk.edu.hk.
	2405:3000:3:4:8::5	node002.atlas.cuhk.edu.hk.
	2405:3000:3:4:8::6	ce01.atlas.cuhk.edu.hk.
	2405:3000:3:4:8::10	se01.atlas.cuhk.edu.hk.
	2405:3000:3:4:8::11	se0101.atlas.cuhk.edu.hk.
	2405:3000:3:4:8::12	se0102.atlas.cuhk.edu.hk.
	2405:3000:3:4:8::13	se0103.atlas.cuhk.edu.hk.
	2405:3000:3:4:8::14	se0104.atlas.cuhk.edu.hk.
	2405:3000:3:4:8::15	se0105.atlas.cuhk.edu.hk.
	2405:3000:3:4:8::16	se0106.atlas.cuhk.edu.hk.
	2405:3000:3:4:8::17	se0107.atlas.cuhk.edu.hk.
	2405:3000:3:4:8::18	se0108.atlas.cuhk.edu.hk.
	2405:3000:3:4:8::19	se0109.atlas.cuhk.edu.hk.
	2405:3000:3:6::14	barnowl-v6.itsc.cuhk.edu.hk.
	2405:3000:3:6::16	dns2.cuhk.edu.hk.
	2405:3000:3:f::28	big21.itsc.cuhk.edu.hk.
	2405:3000:3:f::29	big22.itsc.cuhk.edu.hk.
	2405:3000:3:f::6a	s14tlbtest1.itsc.cuhk.edu.hk.
	2405:3000:3:f::6b	s14tlbtest2.itsc.cuhk.edu.hk.
	2405:3000:3:f::6c	s14tlbtestvs.itsc.cuhk.edu.hk.
	2405:3000:3:f::e2	big19.itsc.cuhk.edu.hk.
	2405:3000:3:f::e3	big20.itsc.cuhk.edu.hk.
	2405:3000:3:f::e5	s14pvm1.itsc.cuhk.edu.hk.
	2405:3000:3:f::e6	s14pvm2.itsc.cuhk.edu.hk.
	2405:3000:3:f::e7	s14pvs.itsc.cuhk.edu.hk.
	2405:3000:3:f::1:1a	pmonas1.itsc.cuhk.edu.hk.
	2405:3000:3:f::1:49	s15pvm1.itsc.cuhk.edu.hk.
	2405:3000:3:f::1:4a	s15pvm2.itsc.cuhk.edu.hk.
	2405:3000:3:f::1:4b	s15pvs.itsc.cuhk.edu.hk.
	2405:3000:3:15::2	helium.ipv6.cuhk.net.
	2405:3000:3:15::18	argon.ipv6.cuhk.net.
	2405:3000:3:15::36	krypton.ipv6.cuhk.net.
	2405:3000:3:15::54	xenon.ipv6.cuhk.net.
	2405:3000:3:15::86	radon.ipv6.cuhk.net.

Last Update: 2026-05-10T09:50:30Z UTC

	AAAA	DNS
	2405:3000:3:6::15	y.hkirc.net.HK, ns2.cuhk.edu.hk
	2405:3000:3:6::16	dns2.cuhk.edu.hk
	2405:3000:3:1d::12a	cbprint.itsc.cuhk.edu.hk
	2405:3000:3:112::92	nagios.itsc.cuhk.edu.hk
	2405:3000:3:112::93	mud.itsc.cuhk.edu.hk
	2405:3000:3:112::c0	sandy.itsc.cuhk.edu.hk
	2405:3000:3:112::c2	pmonz0.itsc.cuhk.edu.hk
	2405:3000:3:112::c4	gravity.itsc.cuhk.edu.hk
	2405:3000:3:116::6	xsdata.itsc.cuhk.edu.hk
	2405:3000:3:116::17b	ddi-cert.itsc.cuhk.edu.hk
	2405:3000:3:116::17d	ddi.itsc.cuhk.edu.hk
	2405:3000:3:118::9	idp.cuhk.edu.hk
	2405:3000:3:118::f	listserv.cuhk.edu.hk
	2405:3000:3:118::68	rmpa.itsc.cuhk.edu.hk
	2405:3000:3:118::10d	dns1.cuhk.edu.hk
	2405:3000:3:f63d:211:32ff:fec8:6a93	*.ntecnas.direct.quickconnect.to ( 2 total...)

Last Update: 2026-05-30T20:19:26Z UTC

IRR Databases

IRR	Expected ASN
apnic	AS3661	Show Raw route6: 2405:3000::/32 descr: CUHKNET origin: AS3661 mnt-by: MAINT-CUHKNET-HK last-modified: 2008-09-04T07:55:33Z source: APNIC
nttcom	AS3661	Show Raw route6: 2405:3000::/32 descr: HKBN(customer route) origin: AS3661 notify: nocsn_router@hkbn.com.hk mnt-by: MAINT-HKBN changed: nocsn@hkbn.com.hk source: NTTCOM last-modified: 2021-08-06T02:07:40Z
radb	AS3661	Show Raw route6: 2405:3000::/32 origin: AS3661 descr: HKBN(customer route) mnt-by: MAINT-AS9269 changed: nocsn@hkbn.com.hk 20210805 #02:20:16Z source: RADB last-modified: 2023-11-13T16:08:02Z
nttcom	AS4641	Show Raw route6: 2405:3000::/32 descr: proxy route6 registration by AS2914 origin: AS4641 admin-c: NCGE-VRIO tech-c: NCGE-VRIO remarks: Abuse / UCE reports abuse@ntt.net remarks: Security issues security@ntt.net remarks: SWIP issues ce-ipadmin@us.ntt.net notify: tech@ntt.net mnt-by: MAINT-NTTCOM-BB changed: fukamori@ntt.net 20100611 source: NTTCOM

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