What is ASN AS142005?

ASN AS142005 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS142005?

AS142005 is listed under NC Taiwan Co., Ltd..

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.

AS142005 NC Taiwan Co., Ltd. | IPGeolocation.io

ASN Lookup Tool

NC Taiwan Co., Ltd. ncsoft.com

TW 29 Routes

AS Data

AS142005

AS142005 – NC Taiwan Co., Ltd.

AS Number	142005
AS Name	NCTAIWANCOLTD-AS-AP
Organization	NC Taiwan Co., Ltd. (org-ntcl2-ap)
Country	TW
Website	ncsoft.com
Number of IPv4 Routes	29
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	APNIC
Date Allocated	N/A

ASN Intelligence API for production workflows

Use ASN data for AS142005 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
206.127.152.0/23	AS142005	NC Taiwan Co., Ltd.	NC Taiwan Co., Ltd.	512
206.127.144.0/23	AS142005	NC Taiwan Co., Ltd.	NC Taiwan Co., Ltd.	512
209.35.96.0/23	AS142005	NC Taiwan Co., Ltd.	NC Taiwan Co., Ltd.	512
64.25.32.0/23	AS142005	NC Taiwan Co., Ltd.	NC Taiwan Co., Ltd.	512
206.127.144.0/22	AS142005	NC Taiwan Co., Ltd.	NC Taiwan Co., Ltd.	1024
64.25.41.0/24	AS142005	NC Taiwan Co., Ltd.	NC Taiwan Co., Ltd.	256
216.107.244.0/22	AS142005	NC Taiwan Co., Ltd.	NC Taiwan Co., Ltd.	1024
216.107.240.0/22	AS142005	NC Taiwan Co., Ltd.	NC Taiwan Co., Ltd.	1024
209.35.188.0/23	AS142005	NC Taiwan Co., Ltd.	NC Taiwan Co., Ltd.	512
206.127.156.0/24	AS142005	NC Taiwan Co., Ltd.	NC Taiwan Co., Ltd.	256

Raw Whois Response

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

% Information related to 'AS141626 - AS142649'

as-block:       AS141626 - AS142649
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:  2020-10-21T04:09:48Z
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 'AS142005'

% Abuse contact for 'AS142005' is 'network_service@ncsoft.com'

aut-num:        AS142005
as-name:        NCTAIWANCOLTD-AS-AP
descr:          NC Taiwan Co., Ltd.
country:        TW
org:            ORG-NTCL2-AP
admin-c:        NTCL4-AP
tech-c:         NTCL4-AP
abuse-c:        AN2895-AP
mnt-lower:      MAINT-NCCORPORATION-MNT
mnt-routes:     MAINT-NCCORPORATION-MNT
mnt-by:         APNIC-HM
mnt-irt:        IRT-NCTAIWANCOLTD-TW
last-modified:  2026-04-06T08:05:19Z
source:         APNIC

irt:            IRT-NCTAIWANCOLTD-TW
address:        12 Daewangpangyoro 644beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do, Korea
e-mail:         network_service@ncsoft.com
abuse-mailbox:  network_service@ncsoft.com
admin-c:        NET2-AP
tech-c:         NET2-AP
auth:           # Filtered
remarks:        network_service@ncsoft.com was validated on 2025-09-30
mnt-by:         MAINT-NCTAIWANCOLTD-TW
mnt-by:         MAINT-NCCORPORATION-MNT
last-modified:  2026-04-06T07:57:45Z
source:         APNIC

organisation:   ORG-NTCL2-AP
org-name:       NC Taiwan Co., Ltd.
org-type:       LIR
country:        TW
address:        No. 157-17, Sec. 1, Zhongshan Rd., Banqiao Dist
phone:          +886-8964-9100
e-mail:         network_service@ncsoft.com
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:18:31Z
source:         APNIC

role:           ABUSE NCTAIWANCOLTDTW
country:        ZZ
address:        12 Daewangpangyoro 644beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do, Korea
phone:          +000000000
e-mail:         network_service@ncsoft.com
admin-c:        NET2-AP
tech-c:         NET2-AP
nic-hdl:        AN2895-AP
remarks:        Generated from irt object IRT-NCTAIWANCOLTD-TW
remarks:        network_service@ncsoft.com was validated on 2025-09-30
abuse-mailbox:  network_service@ncsoft.com
mnt-by:         APNIC-ABUSE
last-modified:  2026-04-06T07:58:13Z
source:         APNIC

role:           NC Taiwan Co Ltd administrator
address:        No. 157-17, Sec. 1, Zhongshan Rd., Banqiao Dist, Taipei New Taipei City 220 220242
country:        KR
phone:          +886-8964-9100
e-mail:         network_service@ncsoft.com
admin-c:        NET2-AP
tech-c:         NET2-AP
nic-hdl:        NTCL4-AP
mnt-by:         MAINT-NCTAIWANCOLTD-TW
last-modified:  2026-04-06T06:16:53Z
source:         APNIC

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

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.apnic.net",
  "as_blocks" : [ {
    "as_block" : "AS141626 - AS142649",
    "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" : "2020-10-21",
    "source" : "APNIC"
  } ],
  "aut_nums" : [ {
    "aut_num" : "AS142005",
    "as_name" : "NCTAIWANCOLTD-AS-AP",
    "description" : [ "NC Taiwan Co., Ltd." ],
    "country" : "TW",
    "organization" : "ORG-NTCL2-AP",
    "admin_contacts" : [ "NTCL4-AP" ],
    "tech_contacts" : [ "NTCL4-AP" ],
    "abuse_contacts" : [ "AN2895-AP" ],
    "mnt_irt" : [ "IRT-NCTAIWANCOLTD-TW" ],
    "mnt_lower" : [ "MAINT-NCCORPORATION-MNT" ],
    "mnt_routes" : [ "MAINT-NCCORPORATION-MNT" ],
    "mnt_by" : [ "APNIC-HM" ],
    "date_updated" : "2026-04-06",
    "source" : "APNIC"
  } ],
  "irt" : {
    "handle" : "IRT-NCTAIWANCOLTD-TW",
    "address" : [ "12 Daewangpangyoro 644beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do, Korea" ],
    "street" : "Daewangpangyoro 644beon-gil",
    "city" : "Bundang-gu",
    "email" : [ "network_service@ncsoft.com" ],
    "abuse_mailbox" : [ "network_service@ncsoft.com" ],
    "admin_contacts" : [ "NET2-AP" ],
    "tech_contacts" : [ "NET2-AP" ],
    "remarks" : [ "network_service@ncsoft.com was validated on 2025-09-30" ],
    "mnt_by" : [ "MAINT-NCTAIWANCOLTD-TW", "MAINT-NCCORPORATION-MNT" ],
    "date_updated" : "2026-04-06",
    "source" : "APNIC"
  },
  "organization" : {
    "handle" : "ORG-NTCL2-AP",
    "name" : "NC Taiwan Co., Ltd.",
    "type" : "LIR",
    "address" : [ "No. 157-17, Sec. 1, Zhongshan Rd., Banqiao Dist" ],
    "street" : "Sec. 1 Zhongshan Rd.",
    "city" : "Banqiao",
    "district" : "Dist",
    "country" : [ "TW" ],
    "email" : [ "network_service@ncsoft.com" ],
    "phone" : [ "+886-8964-9100" ],
    "mnt_ref" : [ "APNIC-HM" ],
    "mnt_by" : [ "APNIC-HM" ],
    "date_updated" : "2023-09-05",
    "source" : "APNIC"
  },
  "administrative_contacts" : [ {
    "handle" : "NTCL4-AP",
    "name" : "NC Taiwan Co Ltd administrator",
    "address" : [ "No. 157-17, Sec. 1, Zhongshan Rd., Banqiao Dist, Taipei New Taipei City 220 220242" ],
    "street" : "Sec. 1 Zhongshan Rd. Banqiao Dist Taipei",
    "city" : "New Taipei City",
    "zip_code" : "220 220242",
    "country" : "KR",
    "email" : [ "network_service@ncsoft.com" ],
    "phone" : [ "+886-8964-9100" ],
    "admin_contacts" : [ "NET2-AP" ],
    "tech_contacts" : [ "NET2-AP" ],
    "mnt_by" : [ "MAINT-NCTAIWANCOLTD-TW" ],
    "date_updated" : "2026-04-06",
    "source" : "APNIC"
  } ],
  "technical_contacts" : [ {
    "handle" : "NTCL4-AP",
    "name" : "NC Taiwan Co Ltd administrator",
    "address" : [ "No. 157-17, Sec. 1, Zhongshan Rd., Banqiao Dist, Taipei New Taipei City 220 220242" ],
    "street" : "Sec. 1 Zhongshan Rd. Banqiao Dist Taipei",
    "city" : "New Taipei City",
    "zip_code" : "220 220242",
    "country" : "KR",
    "email" : [ "network_service@ncsoft.com" ],
    "phone" : [ "+886-8964-9100" ],
    "admin_contacts" : [ "NET2-AP" ],
    "tech_contacts" : [ "NET2-AP" ],
    "mnt_by" : [ "MAINT-NCTAIWANCOLTD-TW" ],
    "date_updated" : "2026-04-06",
    "source" : "APNIC"
  } ],
  "abuse_contacts" : [ {
    "handle" : "AN2895-AP",
    "name" : "ABUSE NCTAIWANCOLTDTW",
    "address" : [ "12 Daewangpangyoro 644beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do, Korea" ],
    "street" : "Daewangpangyoro 644beon-gil",
    "city" : "Bundang-gu",
    "country" : "ZZ",
    "email" : [ "network_service@ncsoft.com" ],
    "abuse_mailbox" : [ "network_service@ncsoft.com" ],
    "phone" : [ "+000000000" ],
    "admin_contacts" : [ "NET2-AP" ],
    "tech_contacts" : [ "NET2-AP" ],
    "remarks" : [ "Generated from irt object IRT-NCTAIWANCOLTD-TW", "network_service@ncsoft.com was validated on 2025-09-30" ],
    "mnt_by" : [ "APNIC-ABUSE" ],
    "date_updated" : "2026-04-06",
    "source" : "APNIC"
  } ]
}

Peers

AS Number	Description	Country
AS3491	PCCW Global	HK
AS6453	TATA COMMUNICATIONS AMERICA INC	US
AS198949	Radware Ltd	IL
AS3786	LG DACOM Corporation	KR
AS9318	SK Broadband Co Ltd	KR
AS3491	PCCW Global HK Limited	HK
AS3462	Chunghwa Telecom Co., Ltd.	TW
AS3462	Data Communication Business Group	TW
AS2914	NTT America, Inc.	US
AS3356	Level 3 Parent, LLC	US

Upstreams

AS Number	Description	Country
AS6453	TATA COMMUNICATIONS AMERICA INC	US
AS198949	Radware Ltd	IL
AS3786	LG DACOM Corporation	KR
AS9318	SK Broadband Co Ltd	KR
AS3491	PCCW Global HK Limited	HK
AS3462	Chunghwa Telecom Co., Ltd.	TW
AS2914	NTT America, Inc.	US
AS3356	Level 3 Parent, LLC	US