ASN AS38819 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS38819?

AS38819 is listed under CSL 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?

The page shows a preview of large ASN datasets. Use the page controls to load more rows, and upgrade to a paid plan for complete access.

AS38819 CSL Limited | IPGeolocation.io

CSL Limited pccw.com

HK 79 Routes

AS Data

AS38819

AS38819 – CSL Limited

AS Number	38819
AS Name	HKCSL-AS-AP
Organization	CSL Limited (org-cl2-ap)
Country	HK
Website	pccw.com
Number of IPv4 Routes	69
Number of IPv6 Routes	10
ASN type	BUSINESS
Registry	APNIC
Date Allocated	N/A

ASN Intelligence API for production workflows

Use ASN data for AS38819 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
14.0.136.0/24	AS38819	CSL Limited	CSL Limited	256
110.4.16.0/24	AS38819	CSL Limited	CSL Limited	256
14.0.182.0/24	AS38819	CSL Limited	CSL Limited	256
110.4.11.0/24	AS38819	CSL Limited	CSL Limited	256
14.0.240.0/21	AS38819	CSL Limited	CSL Limited	2048
203.210.8.0/24	AS38819	CSL Limited	CSL Limited	256
14.0.224.0/21	AS38819	CSL Limited	CSL Limited	2048
110.4.2.0/24	AS38819	CSL Limited	CSL Limited	256
14.0.168.0/21	AS38819	CSL Limited	CSL Limited	2048
14.0.140.0/24	AS38819	CSL Limited	CSL Limited	256

Raw Whois Response

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

% Information related to 'AS37888 - AS38911'

as-block:       AS37888 - AS38911
descr:          APNIC ASN block
remarks:        These AS numbers are further assigned by APNIC
remarks:        to APNIC members and end-users in the APNIC region
admin-c:        HM20-AP
tech-c:         HM20-AP
mnt-by:         APNIC-HM
mnt-lower:      APNIC-HM
last-modified:  2009-09-29T06:04:16Z
source:         APNIC

role:           APNIC Hostmaster
address:        6 Cordelia Street
address:        South Brisbane
address:        QLD 4101
country:        AU
phone:          +61 7 3858 3100
fax-no:         +61 7 3858 3199
e-mail:         helpdesk@apnic.net
admin-c:        AMS11-AP
tech-c:         AH256-AP
nic-hdl:        HM20-AP
remarks:        Administrator for APNIC
notify:         hostmaster@apnic.net
mnt-by:         MAINT-APNIC-AP
last-modified:  2013-10-23T04:06:51Z
source:         APNIC

% Information related to 'AS38819'

% Abuse contact for 'AS38819' is 'corepssupport@pccw.com'

aut-num:        AS38819
as-name:        HKCSL-AS-AP
descr:          HKCSL GPRS NETWORK
country:        HK
import:         from AS2914 accept ANY
import:         from AS4637 accept ANY
import:         from AS4635 accept ANY
export:         to AS2914 announce AS38819
export:         to AS4637 announce AS38819
export:         to AS4635 announce AS38819
org:            ORG-CL2-AP
admin-c:        IO35-AP
tech-c:         IP90-AP
abuse-c:        AH969-AP
notify:         paul.my.fung@pccw.com
mnt-lower:      MAINT-AP-SYSENG
mnt-routes:     MAINT-AP-SYSENG
mnt-by:         APNIC-HM
mnt-irt:        IRT-HKCSL-HK
last-modified:  2020-07-07T04:57:11Z
source:         APNIC

irt:            IRT-HKCSL-HK
address:        4/F, Lai Chi Kok Engineering II
address:        4 Yuet Lun Street,
address:        Lai Chi Kok
address:        Hong Kong
e-mail:         corepssupport@pccw.com
abuse-mailbox:  corepssupport@pccw.com
admin-c:        IO35-AP
tech-c:         IP90-AP
auth:           # Filtered
remarks:        corepssupport@pccw.com was validated on 2025-11-11
mnt-by:         MAINT-AP-SYSENG
last-modified:  2025-11-18T00:26:54Z
source:         APNIC

organisation:   ORG-CL2-AP
org-name:       CSL Limited
org-type:       LIR
country:        HK
address:        3rd Floor
address:        Lai Chi Kok Engineering Center II
address:        4 Yuet Lun Street
phone:          +852-2883-4324
fax-no:         +852-2962-5504
e-mail:         corepssupport@pccw.com
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:14:49Z
source:         APNIC

role:           ABUSE HKCSLHK
country:        ZZ
address:        4/F, Lai Chi Kok Engineering II
address:        4 Yuet Lun Street,
address:        Lai Chi Kok
address:        Hong Kong
phone:          +000000000
e-mail:         corepssupport@pccw.com
admin-c:        IO35-AP
tech-c:         IP90-AP
nic-hdl:        AH969-AP
remarks:        Generated from irt object IRT-HKCSL-HK
remarks:        corepssupport@pccw.com was validated on 2025-11-11
abuse-mailbox:  corepssupport@pccw.com
mnt-by:         APNIC-ABUSE
last-modified:  2025-11-11T15:01:11Z
source:         APNIC

person:         IPBB Operation
address:        3/F, Lai Chi Kok Engineering Center II
                4 Yuet Lun Street
                Hong Kong
country:        HK
phone:          +852-23464280
e-mail:         corepssupport@pccw.com
nic-hdl:        IO35-AP
remarks:        Please send spam and abuse reports to corepssupport@pccw.com
remarks:        with providing detail information and times in HKT.
remarks:        The phone number is only for emergency contact
abuse-mailbox:  corepssupport@pccw.com
mnt-by:         MAINT-AP-SYSENG
last-modified:  2016-08-04T02:55:19Z
source:         APNIC

person:         IPBB Planning
address:        3/F, Lai Chi Kok Engineering Centre II, 4 Yuet Lun Street
country:        HK
phone:          +852-23464280
e-mail:         PCCWEngrgWireless-SPDIPCoreNetwork@pccw.com
nic-hdl:        IP90-AP
abuse-mailbox:  corepssupport@pccw.com
mnt-by:         MAINT-AP-SYSENG
remarks:        Please send spam and abuse reports to corepssupport@pccw.com
remarks:        with providing detail information and times in HKT
remarks:        The phone number is only for emergency contact
last-modified:  2024-08-09T08:21:23Z
source:         APNIC

% This query was served by the APNIC Whois Service version 1.88.34 (WHOIS-UK2)

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.apnic.net",
  "as_blocks" : [ {
    "as_block" : "AS37888 - AS38911",
    "description" : [ "APNIC ASN block" ],
    "admin_contacts" : [ "HM20-AP" ],
    "tech_contacts" : [ "HM20-AP" ],
    "remarks" : [ "These AS numbers are further assigned by APNIC", "to APNIC members and end-users in the APNIC region" ],
    "mnt_by" : [ "APNIC-HM" ],
    "mnt_lower" : [ "APNIC-HM" ],
    "date_updated" : "2009-09-29",
    "source" : "APNIC"
  } ],
  "aut_nums" : [ {
    "aut_num" : "AS38819",
    "as_name" : "HKCSL-AS-AP",
    "description" : [ "HKCSL GPRS NETWORK" ],
    "country" : "HK",
    "import" : [ "from AS2914 accept ANY", "from AS4637 accept ANY", "from AS4635 accept ANY" ],
    "export" : [ "to AS2914 announce AS38819", "to AS4637 announce AS38819", "to AS4635 announce AS38819" ],
    "organization" : "ORG-CL2-AP",
    "admin_contacts" : [ "IO35-AP" ],
    "tech_contacts" : [ "IP90-AP" ],
    "abuse_contacts" : [ "AH969-AP" ],
    "notify" : [ "paul.my.fung@pccw.com" ],
    "mnt_irt" : [ "IRT-HKCSL-HK" ],
    "mnt_lower" : [ "MAINT-AP-SYSENG" ],
    "mnt_routes" : [ "MAINT-AP-SYSENG" ],
    "mnt_by" : [ "APNIC-HM" ],
    "date_updated" : "2020-07-07",
    "source" : "APNIC"
  } ],
  "irt" : {
    "handle" : "IRT-HKCSL-HK",
    "address" : [ "4/F, Lai Chi Kok Engineering II", "4 Yuet Lun Street,", "Lai Chi Kok", "Hong Kong" ],
    "street" : "Yuet Lun Street",
    "city" : "Lai Chi Kok",
    "country" : "HONG KONG",
    "email" : [ "corepssupport@pccw.com" ],
    "abuse_mailbox" : [ "corepssupport@pccw.com" ],
    "admin_contacts" : [ "IO35-AP" ],
    "tech_contacts" : [ "IP90-AP" ],
    "remarks" : [ "corepssupport@pccw.com was validated on 2025-11-11" ],
    "mnt_by" : [ "MAINT-AP-SYSENG" ],
    "date_updated" : "2025-11-18",
    "source" : "APNIC"
  },
  "organization" : {
    "handle" : "ORG-CL2-AP",
    "name" : "CSL Limited",
    "type" : "LIR",
    "address" : [ "3rd Floor", "Lai Chi Kok Engineering Center II", "4 Yuet Lun Street" ],
    "street" : "Yuet Lun Street",
    "city" : "Lai Chi",
    "country" : [ "HK" ],
    "email" : [ "corepssupport@pccw.com" ],
    "phone" : [ "+852-2883-4324" ],
    "fax_no" : [ "+852-2962-5504" ],
    "mnt_ref" : [ "APNIC-HM" ],
    "mnt_by" : [ "APNIC-HM" ],
    "date_updated" : "2023-09-05",
    "source" : "APNIC"
  },
  "administrative_contacts" : [ {
    "handle" : "IO35-AP",
    "name" : "IPBB Operation",
    "address" : [ "3/F, Lai Chi Kok Engineering Center II", "4 Yuet Lun Street", "Hong Kong" ],
    "street" : "Yuet Lun Street",
    "city" : "Hong Kong",
    "country" : "HK",
    "email" : [ "corepssupport@pccw.com" ],
    "abuse_mailbox" : [ "corepssupport@pccw.com" ],
    "phone" : [ "+852-23464280" ],
    "remarks" : [ "Please send spam and abuse reports to corepssupport@pccw.com", "with providing detail information and times in HKT.", "The phone number is only for emergency contact" ],
    "mnt_by" : [ "MAINT-AP-SYSENG" ],
    "date_updated" : "2016-08-04",
    "source" : "APNIC"
  } ],
  "technical_contacts" : [ {
    "handle" : "IP90-AP",
    "name" : "IPBB Planning",
    "address" : [ "3/F, Lai Chi Kok Engineering Centre II, 4 Yuet Lun Street" ],
    "street" : "Yuet Lun Street",
    "country" : "HK",
    "email" : [ "PCCWEngrgWireless-SPDIPCoreNetwork@pccw.com" ],
    "abuse_mailbox" : [ "corepssupport@pccw.com" ],
    "phone" : [ "+852-23464280" ],
    "remarks" : [ "Please send spam and abuse reports to corepssupport@pccw.com", "with providing detail information and times in HKT", "The phone number is only for emergency contact" ],
    "mnt_by" : [ "MAINT-AP-SYSENG" ],
    "date_updated" : "2024-08-09",
    "source" : "APNIC"
  } ],
  "abuse_contacts" : [ {
    "handle" : "AH969-AP",
    "name" : "ABUSE HKCSLHK",
    "address" : [ "4/F, Lai Chi Kok Engineering II", "4 Yuet Lun Street,", "Lai Chi Kok", "Hong Kong" ],
    "street" : "Yuet Lun Street",
    "city" : "Lai Chi Kok",
    "country" : "ZZ",
    "email" : [ "corepssupport@pccw.com" ],
    "abuse_mailbox" : [ "corepssupport@pccw.com" ],
    "phone" : [ "+000000000" ],
    "admin_contacts" : [ "IO35-AP" ],
    "tech_contacts" : [ "IP90-AP" ],
    "remarks" : [ "Generated from irt object IRT-HKCSL-HK", "corepssupport@pccw.com was validated on 2025-11-11" ],
    "mnt_by" : [ "APNIC-ABUSE" ],
    "date_updated" : "2025-11-11",
    "source" : "APNIC",
    "addressCountry" : "HONG KONG"
  } ]
}

Peers

AS Number	Description	Country
AS39120	Convergenze S.p.A.	IT
AS24482	SG.GS	SG
AS4635	Hong Kong Internet Exchange--Route Server 1	HK
AS4760	HKT Limited	HK
AS32590	Valve Corporation	US
AS8359	MTS PJSC	RU
AS4635	The Hong Kong Internet Exchange Limited	HK
AS2914	NTT America, Inc.	US
AS9444	Hong Kong Telecommunications HKT Limited	HK
AS9444	Hong Kong Telecommunications (HKT) Limited	HK

Upstreams

AS Number	Description	Country
AS39120	Convergenze S.p.A.	IT
AS4760	HKT Limited	HK
AS8359	MTS PJSC	RU
AS4635	The Hong Kong Internet Exchange Limited	HK

Downstreams

AS Number	Description	Country
AS9444	Hong Kong Telecommunications HKT Limited	HK

Contacts

Email Contacts

corepssupport@pccw.com

Abuse Contacts