ASN AS3662 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS3662?

AS3662 is listed under Joint Universities Computer Centre Limited.

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

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AS3662 Joint Universities Computer Centre Limited

Joint Universities Computer Centre Limited cuhk.edu.hk

HK 18 Routes

AS Data

AS3662

AS3662 – Joint Universities Computer Centre Limited

AS Number	3662
AS Name	HARNET
Organization	Joint Universities Computer Centre Limited (org-jucc1-ap)
Country	HK
Website	cuhk.edu.hk
Number of IPv4 Routes	7
Number of IPv6 Routes	11
ASN type	EDUCATION
Registry	APNIC
Date Allocated	N/A

ASN Intelligence API for production workflows

Use ASN data for AS3662 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
203.188.118.0/24	AS3662	Joint Universities Computer Centre Limited	HARNET Backbone	256
2001:ce0:1:a::/64	AS3662	Joint Universities Computer Centre Limited	Joint Universities Computer Centre Limited	~18×10¹⁸
203.188.112.0/24	AS4528	The University of Hong Kong	HARNET Backbone	256
2001:ce0:1:11::/64	AS3662	Joint Universities Computer Centre Limited	Joint Universities Computer Centre Limited	~18×10¹⁸
2001:ce0:1:41::/64	AS3662	Joint Universities Computer Centre Limited	Joint Universities Computer Centre Limited	~18×10¹⁸
2001:ce0:1:3::/64	AS3662	Joint Universities Computer Centre Limited	Joint Universities Computer Centre Limited	~18×10¹⁸
202.40.221.0/24	AS3662	Joint Universities Computer Centre Limited	HARNET Backbone	256
202.40.218.0/24	AS3662	Joint Universities Computer Centre Limited	HARNET Backbone	256
2001:ce0:1:1::/64	AS3662	Joint Universities Computer Centre Limited	Joint Universities Computer Centre Limited	~18×10¹⁸
2001:ce0:1:1f::/64	AS3662	Joint Universities Computer Centre Limited	Joint Universities Computer Centre Limited	~18×10¹⁸

Raw Whois Response

% [whois.apnic.net]
% Whois data copyright terms    http://www.apnic.net/db/dbcopyright.html

% Information related to 'AS3662'

% Abuse contact for 'AS3662' is 'hartech@jucc.edu.hk'

aut-num:        AS3662
as-name:        HARNET
descr:          Joint Universities Computer Centre Limited
descr:          A Cooperative effort of the IT/Computer Centres of the
descr:          eight Government-funded tertiary institutions in Hong Kong
country:        HK
remarks:        This aut-num object created as part of the ER-Transfer from ARIN
org:            ORG-JUCC1-AP
admin-c:        IKY3-AP
tech-c:         DC1224-AP
tech-c:         HTS5-AP
abuse-c:        AJ481-AP
mnt-lower:      MAINt-JUCC-AP
mnt-routes:     MAINt-JUCC-AP
mnt-by:         APNIC-HM
mnt-irt:        IRT-JUCC-HK
last-modified:  2021-07-09T04:24:43Z
source:         APNIC

irt:            IRT-JUCC-HK
address:        Joint Universities Computer Centre
address:        c/o Information Technology Services
address:        The University of Hong Kong
address:        Pokfulam Road
e-mail:         hartech@jucc.edu.hk
abuse-mailbox:  hartech@jucc.edu.hk
admin-c:        GM806-AP
tech-c:         DC1224-AP
tech-c:         HTS5-AP
auth:           # Filtered
remarks:        hartech@jucc.edu.hk was validated on 2025-12-23
mnt-by:         MAINT-JUCC-AP
last-modified:  2025-12-23T16:12:47Z
source:         APNIC

organisation:   ORG-JUCC1-AP
org-name:       Joint Universities Computer Centre Limited
org-type:       LIR
country:        HK
address:        Joint Universities Computer Centre Limited
address:        c/o IT Services Administration, 4/F, Main Library (New Wing)
address:        The University of Hong Kong, Pokfulam
address:        Pokfulam, Hong Kong
phone:          +852-3917-8806
fax-no:         +852-2559-7904
e-mail:         enquiry@jucc.edu.hk
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:14:44Z
source:         APNIC

role:           ABUSE JUCCHK
country:        ZZ
address:        Joint Universities Computer Centre
address:        c/o Information Technology Services
address:        The University of Hong Kong
address:        Pokfulam Road
phone:          +000000000
e-mail:         hartech@jucc.edu.hk
admin-c:        GM806-AP
tech-c:         DC1224-AP
tech-c:         HTS5-AP
nic-hdl:        AJ481-AP
remarks:        Generated from irt object IRT-JUCC-HK
remarks:        hartech@jucc.edu.hk was validated on 2025-12-23
abuse-mailbox:  hartech@jucc.edu.hk
mnt-by:         APNIC-ABUSE
last-modified:  2025-12-23T16:13:17Z
source:         APNIC

role:           HARNET Technical Support
address:        Joint Universities Computer Centre Ltd
address:        c/o ITS, The University of Hong Kong
address:        Pokfulam
country:        HK
phone:          +852-2859-2491
fax-no:         +852-2559-7904
e-mail:         hartech@jucc.edu.hk
admin-c:        GM806-AP
tech-c:         DC1224-AP
tech-c:         HTS5-AP
nic-hdl:        HTS5-AP
notify:         GM@jucc.edu.hk
abuse-mailbox:  abuse@jucc.edu.hk
mnt-by:         MAINT-JUCC-AP
last-modified:  2021-07-15T02:42:16Z
source:         APNIC

person:         David Choi
address:        Information Technology Services Centre
address:        The Chinese University of Hong Kong
address:        Shatin, New Territories
country:        HK
phone:          +852-3943-8848
fax-no:         +852-2603-5001
e-mail:         david-choi@cuhk.edu.hk
nic-hdl:        DC1224-AP
mnt-by:         MAINT-JUCC-AP
last-modified:  2012-11-15T03:35:22Z
source:         APNIC

person:         Ivy King-tai Yip
address:        Joint Universities Computer Centre
                c/o Information Technology Services
                The University of Hong Kong
                Pokfulam Road
country:        HK
phone:          +852-3549-5306
e-mail:         ivy.yip@jucc.edu.hk
nic-hdl:        IKY3-AP
mnt-by:         MAINT-JUCC-AP
last-modified:  2021-07-09T04:22:12Z
source:         APNIC

% This query was served by the APNIC Whois Service version 1.88.34 (WHOIS-US2)



#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#


ASNumber:       3661 - 3662
ASName:         APNIC-3661
ASHandle:       AS3661
RegDate:        2002-07-31
Updated:        2009-10-08
Comment:        These AS numbers are not registered in the ARIN database.
Comment:        For details, refer to the APNIC Whois Database via
Comment:        WHOIS.APNIC.NET or http://wq.apnic.net/apnic-bin/whois.pl
Ref:            https://rdap.arin.net/registry/autnum/3661

ResourceLink:  https://apps.db.ripe.net/db-web-ui/query
ResourceLink:  whois.apnic.net


OrgName:        Asia Pacific Network Information Centre
OrgId:          APNIC
Address:        PO Box 3646
City:           South Brisbane
StateProv:      QLD
PostalCode:     4101
Country:        AU
RegDate:        
Updated:        2012-01-24
Ref:            https://rdap.arin.net/registry/entity/APNIC

ReferralServer:  whois://whois.apnic.net
ResourceLink:  http://wq.apnic.net/whois-search/static/search.html

OrgTechHandle: AWC12-ARIN
OrgTechName:   APNIC Whois Contact
OrgTechPhone:  +61 7 3858 3188 
OrgTechEmail:  search-apnic-not-arin@apnic.net
OrgTechRef:    https://rdap.arin.net/registry/entity/AWC12-ARIN

OrgAbuseHandle: AWC12-ARIN
OrgAbuseName:   APNIC Whois Contact
OrgAbusePhone:  +61 7 3858 3188 
OrgAbuseEmail:  search-apnic-not-arin@apnic.net
OrgAbuseRef:    https://rdap.arin.net/registry/entity/AWC12-ARIN


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.apnic.net",
  "aut_nums" : [ {
    "aut_num" : "AS3662",
    "as_name" : "HARNET",
    "description" : [ "Joint Universities Computer Centre Limited", "A Cooperative effort of the IT/Computer Centres of the", "eight Government-funded tertiary institutions in Hong Kong" ],
    "country" : "HK",
    "organization" : "ORG-JUCC1-AP",
    "admin_contacts" : [ "IKY3-AP" ],
    "tech_contacts" : [ "DC1224-AP", "HTS5-AP" ],
    "abuse_contacts" : [ "AJ481-AP" ],
    "remarks" : [ "This aut-num object created as part of the ER-Transfer from ARIN" ],
    "mnt_irt" : [ "IRT-JUCC-HK" ],
    "mnt_lower" : [ "MAINt-JUCC-AP" ],
    "mnt_routes" : [ "MAINt-JUCC-AP" ],
    "mnt_by" : [ "APNIC-HM" ],
    "date_updated" : "2021-07-09",
    "source" : "APNIC"
  } ],
  "irt" : {
    "handle" : "IRT-JUCC-HK",
    "address" : [ "Joint Universities Computer Centre", "c/o Information Technology Services", "The University of Hong Kong", "Pokfulam Road" ],
    "street" : "Pokfulam Road",
    "email" : [ "hartech@jucc.edu.hk" ],
    "abuse_mailbox" : [ "hartech@jucc.edu.hk" ],
    "admin_contacts" : [ "GM806-AP" ],
    "tech_contacts" : [ "DC1224-AP", "HTS5-AP" ],
    "remarks" : [ "hartech@jucc.edu.hk was validated on 2025-12-23" ],
    "mnt_by" : [ "MAINT-JUCC-AP" ],
    "date_updated" : "2025-12-23",
    "source" : "APNIC"
  },
  "organization" : {
    "handle" : "ORG-JUCC1-AP",
    "name" : "Joint Universities Computer Centre Limited",
    "type" : "LIR",
    "address" : [ "Joint Universities Computer Centre Limited", "c/o IT Services Administration, 4/F, Main Library (New Wing)", "The University of Hong Kong, Pokfulam", "Pokfulam, Hong Kong" ],
    "street" : "C/o It Services Administration",
    "city" : "Pokfulam",
    "country" : [ "HK" ],
    "email" : [ "enquiry@jucc.edu.hk" ],
    "phone" : [ "+852-3917-8806" ],
    "fax_no" : [ "+852-2559-7904" ],
    "mnt_ref" : [ "APNIC-HM" ],
    "mnt_by" : [ "APNIC-HM" ],
    "date_updated" : "2023-09-05",
    "source" : "APNIC",
    "addressCountry" : "HONG KONG"
  },
  "administrative_contacts" : [ {
    "handle" : "IKY3-AP",
    "name" : "Ivy King-tai Yip",
    "address" : [ "Joint Universities Computer Centre", "c/o Information Technology Services", "The University of Hong Kong", "Pokfulam Road" ],
    "street" : "Pokfulam Road",
    "country" : "HK",
    "email" : [ "ivy.yip@jucc.edu.hk" ],
    "phone" : [ "+852-3549-5306" ],
    "mnt_by" : [ "MAINT-JUCC-AP" ],
    "date_updated" : "2021-07-09",
    "source" : "APNIC"
  } ],
  "technical_contacts" : [ {
    "handle" : "DC1224-AP",
    "name" : "David Choi",
    "address" : [ "Information Technology Services Centre", "The Chinese University of Hong Kong", "Shatin, New Territories" ],
    "city" : "Shatin",
    "state" : "NEW TERRITORIES",
    "country" : "HK",
    "email" : [ "david-choi@cuhk.edu.hk" ],
    "phone" : [ "+852-3943-8848" ],
    "fax_no" : [ "+852-2603-5001" ],
    "mnt_by" : [ "MAINT-JUCC-AP" ],
    "date_updated" : "2012-11-15",
    "source" : "APNIC"
  }, {
    "handle" : "HTS5-AP",
    "name" : "HARNET Technical Support",
    "address" : [ "Joint Universities Computer Centre Ltd", "c/o ITS, The University of Hong Kong", "Pokfulam" ],
    "street" : "C/o Its",
    "country" : "HK",
    "email" : [ "hartech@jucc.edu.hk" ],
    "abuse_mailbox" : [ "abuse@jucc.edu.hk" ],
    "phone" : [ "+852-2859-2491" ],
    "fax_no" : [ "+852-2559-7904" ],
    "admin_contacts" : [ "GM806-AP" ],
    "tech_contacts" : [ "DC1224-AP", "HTS5-AP" ],
    "notify" : [ "GM@jucc.edu.hk" ],
    "mnt_by" : [ "MAINT-JUCC-AP" ],
    "date_updated" : "2021-07-15",
    "source" : "APNIC"
  } ],
  "abuse_contacts" : [ {
    "handle" : "AJ481-AP",
    "name" : "ABUSE JUCCHK",
    "address" : [ "Joint Universities Computer Centre", "c/o Information Technology Services", "The University of Hong Kong", "Pokfulam Road" ],
    "street" : "Pokfulam Road",
    "country" : "ZZ",
    "email" : [ "hartech@jucc.edu.hk" ],
    "abuse_mailbox" : [ "hartech@jucc.edu.hk" ],
    "phone" : [ "+000000000" ],
    "admin_contacts" : [ "GM806-AP" ],
    "tech_contacts" : [ "DC1224-AP", "HTS5-AP" ],
    "remarks" : [ "Generated from irt object IRT-JUCC-HK", "hartech@jucc.edu.hk was validated on 2025-12-23" ],
    "mnt_by" : [ "APNIC-ABUSE" ],
    "date_updated" : "2025-12-23",
    "source" : "APNIC"
  } ]
}

Peers

AS Number	Description	Country
AS17824	Pacific One Net Limited AS number	HK
AS39120	Convergenze S.p.A.	IT
AS24482	SG.GS	SG
AS4635	Hong Kong Internet Exchange--Route Server 1	HK
AS17764	Hong Kong Metropolitan University	HK
AS3661	The Chinese University of Hong Kong	HK
AS7650	The Education University of Hong Kong	HK
AS3363	Hong Kong University of Science and Technology	HK
AS6939	Hurricane Electric LLC	US
AS32590	Valve Corporation	US

Upstreams

AS Number	Description	Country
AS39120	Convergenze S.p.A.	IT
AS6939	Hurricane Electric LLC	US
AS8359	MTS PJSC	RU
AS137207	Joint Universities Computer Centre Limited	HK
AS17824	Pacific One Net Ltd	HK
AS4635	The Hong Kong Internet Exchange Limited	HK

Downstreams

AS Number	Description	Country
AS17764	Hong Kong Metropolitan University	HK
AS3661	The Chinese University of Hong Kong	HK
AS7650	The Education University of Hong Kong	HK
AS4616	The Hong Kong Polytechnic University	HK
AS3363	Hong Kong University of Science and Technology	HK
AS4158	City University of Hong Kong	HK
AS4605	Hong Kong Baptist University	HK
AS4528	The University of Hong Kong	HK
AS7651	Lingnan University	HK