ASN AS18042 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS18042?

AS18042 is listed under Koos Broadband Telecom.

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.

AS18042 Koos Broadband Telecom

ASN Lookup Tool

Koos Broadband Telecom kbtelecom.net

TW 7 Routes

AS Data

AS18042

AS18042 – Koos Broadband Telecom

AS Number	18042
AS Name	KBT
Organization	Koos Broadband Telecom
Country	TW
Website	kbtelecom.net
Number of IPv4 Routes	6
Number of IPv6 Routes	1
ASN type	ISP
Registry	APNIC
Date Allocated	N/A

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Use ASN data for AS18042 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
61.63.32.0/19	AS18042	Koos Broadband Telecom	KBT Co., LTD	8192
61.63.0.0/19	AS18042	Koos Broadband Telecom	KBT Co., LTD	8192
2400:df40::/32	AS18042	Koos Broadband Telecom	CNS KBT Co., LTD	~79×10²⁷
58.86.0.0/16	AS18042	Koos Broadband Telecom	Koos Broadband Telecom Co., LTD	65536
61.63.64.0/19	AS18042	Koos Broadband Telecom	KBT Co., LTD	8192
103.123.188.0/24	AS18042	Koos Broadband Telecom	China Life Insurance Co., Ltd	256
61.67.128.0/17	AS18042	Koos Broadband Telecom	Taiwan Network Information Center	32768

Raw Whois Response

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

% Information related to 'AS17653 - AS18431'

as-block:       AS17653 - AS18431
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:  2019-01-08T23:19:07Z
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 'AS18040 - AS18049'

as-block:       AS18040 - AS18049
descr:          TWNIC-TW-AS-BLOCK
remarks:        These AS numbers are further assigned by TWNIC
remarks:        to TWNIC members
admin-c:        TWA2-AP
tech-c:         TWA2-AP
mnt-by:         APNIC-HM
mnt-lower:      MAINT-TW-TWNIC
last-modified:  2017-06-29T23:47:09Z
source:         APNIC

role:           TWNIC Whois Administrator
address:        Taiwan Network Information Center
address:        3F., No. 123, Sec. 4, Bade Rd., Songshan Dist.,
address:        Taipei, Taiwan, 105
country:        TW
phone:          +886-2-25289696
fax-no:         +886-2-25287756
e-mail:         hostmaster@twnic.net.tw
admin-c:        ck373-AP
tech-c:         TW922-AP
tech-c:         NS10-AP
nic-hdl:        TWA2-AP
notify:         hostmaster@twnic.net.tw
mnt-by:         MAINT-TW-TWNIC
last-modified:  2020-01-02T03:54:20Z
source:         APNIC

% Information related to 'AS18042'

% Abuse contact for 'AS18042' is 'jacky.ni@homeplus.net.tw'

aut-num:        AS18042
as-name:        KBT
descr:          Koos Broadband Telecom
descr:          9F,No.57,Tung Hsin Rd.,Taipei,Taiwan
country:        TW
import:         from AS9310 action pref=150; accept AS9416
import:         from AS7656 action pref=120; accept AS9416
import:         from AS9671 action pref=150; accept AS9416
import:         from AS17502 action pref=150; accept AS9416
import:         from AS9831 action pref=150; accept AS9416
export:         to AS9416 announce RS-ALL
default:        to AS9416 action pref=100; networks ANY
admin-c:        SMC7-AP
tech-c:         SMC7-AP
abuse-c:        AT939-AP
mnt-by:         MAINT-TW-TWNIC
mnt-irt:        IRT-KBT-TW
last-modified:  2025-11-06T09:08:51Z
source:         APNIC

irt:            IRT-KBT-TW
address:        KBT Co., LTD
address:        4F., No.57, Dongxing Rd., Xinyi Dist., Taipei City 110, Taiwan (R.O.C.)
address:        Taipei
phone:          +886-2-8751-8255 ext. 26310
e-mail:         jacky.ni@homeplus.net.tw
abuse-mailbox:  jacky.ni@homeplus.net.tw
admin-c:        TR423-AP
tech-c:         TR423-AP
remarks:        (oid:KBT)
mnt-by:         MAINT-TW-TWNIC
last-modified:  2025-11-06T07:22:30Z
source:         APNIC
auth:           # Filtered

role:           ABUSE TWNICAP
country:        ZZ
address:        3F., No. 123, Sec. 4, Bade Rd., Songshan Dist., Taipei 105, Taiwan
phone:          +000000000
e-mail:         hostmaster@twnic.tw
admin-c:        TWA2-AP
tech-c:         TWA2-AP
nic-hdl:        AT939-AP
remarks:        Generated from irt object IRT-TWNIC-AP
remarks:        hostmaster@twnic.tw was validated on 2025-05-23
abuse-mailbox:  hostmaster@twnic.tw
mnt-by:         APNIC-ABUSE
last-modified:  2025-05-23T00:02:10Z
source:         APNIC

person:         Shu Ming Chang
address:        9F,No.57,Tung Hsin Rd.,Taipei,Taiwan
country:        TW
phone:          +886-2-8768-3698 ext. 213
fax-no:         +886-2-8768-3690
e-mail:         maxchang@kbtelecom.net
nic-hdl:        SMC7-AP
mnt-by:         MAINT-TW-TWNIC
last-modified:  2008-09-04T07:29:18Z
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" : "AS17653 - AS18431",
    "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" : "2019-01-08",
    "source" : "APNIC"
  }, {
    "as_block" : "AS18040 - AS18049",
    "description" : [ "TWNIC-TW-AS-BLOCK" ],
    "admin_contacts" : [ "TWA2-AP" ],
    "tech_contacts" : [ "TWA2-AP" ],
    "remarks" : [ "These AS numbers are further assigned by TWNIC", "to TWNIC members" ],
    "mnt_by" : [ "APNIC-HM" ],
    "mnt_lower" : [ "MAINT-TW-TWNIC" ],
    "date_updated" : "2017-06-29",
    "source" : "APNIC"
  } ],
  "aut_nums" : [ {
    "aut_num" : "AS18042",
    "as_name" : "KBT",
    "description" : [ "Koos Broadband Telecom", "9F,No.57,Tung Hsin Rd.,Taipei,Taiwan" ],
    "country" : "TW",
    "import" : [ "from AS9310 action pref=150; accept AS9416", "from AS7656 action pref=120; accept AS9416", "from AS9671 action pref=150; accept AS9416", "from AS17502 action pref=150; accept AS9416", "from AS9831 action pref=150; accept AS9416" ],
    "export" : [ "to AS9416 announce RS-ALL" ],
    "default" : [ "to AS9416 action pref=100; networks ANY" ],
    "admin_contacts" : [ "SMC7-AP" ],
    "tech_contacts" : [ "SMC7-AP" ],
    "abuse_contacts" : [ "AT939-AP" ],
    "mnt_irt" : [ "IRT-KBT-TW" ],
    "mnt_by" : [ "MAINT-TW-TWNIC" ],
    "date_updated" : "2025-11-06",
    "source" : "APNIC"
  } ],
  "irt" : {
    "handle" : "IRT-KBT-TW",
    "address" : [ "KBT Co., LTD", "4F., No.57, Dongxing Rd., Xinyi Dist., Taipei City 110, Taiwan (R.O.C.)", "Taipei" ],
    "street" : "Dongxing Rd. Xinyi",
    "city" : "R.o.c. Taipei",
    "zip_code" : "110",
    "country" : "TAIWAN",
    "email" : [ "jacky.ni@homeplus.net.tw" ],
    "abuse_mailbox" : [ "jacky.ni@homeplus.net.tw" ],
    "phone" : [ "+886-2-8751-8255 ext. 26310" ],
    "admin_contacts" : [ "TR423-AP" ],
    "tech_contacts" : [ "TR423-AP" ],
    "remarks" : [ "(oid:KBT)" ],
    "mnt_by" : [ "MAINT-TW-TWNIC" ],
    "date_updated" : "2025-11-06",
    "source" : "APNIC"
  },
  "administrative_contacts" : [ {
    "handle" : "SMC7-AP",
    "name" : "Shu Ming Chang",
    "address" : [ "9F,No.57,Tung Hsin Rd.,Taipei,Taiwan" ],
    "street" : "Tung Hsin Rd.",
    "city" : "Taipei",
    "country" : "TW",
    "email" : [ "maxchang@kbtelecom.net" ],
    "phone" : [ "+886-2-8768-3698 ext. 213" ],
    "fax_no" : [ "+886-2-8768-3690" ],
    "mnt_by" : [ "MAINT-TW-TWNIC" ],
    "date_updated" : "2008-09-04",
    "source" : "APNIC",
    "addressCountry" : "TAIWAN"
  } ],
  "technical_contacts" : [ {
    "handle" : "SMC7-AP",
    "name" : "Shu Ming Chang",
    "address" : [ "9F,No.57,Tung Hsin Rd.,Taipei,Taiwan" ],
    "street" : "Tung Hsin Rd.",
    "city" : "Taipei",
    "country" : "TW",
    "email" : [ "maxchang@kbtelecom.net" ],
    "phone" : [ "+886-2-8768-3698 ext. 213" ],
    "fax_no" : [ "+886-2-8768-3690" ],
    "mnt_by" : [ "MAINT-TW-TWNIC" ],
    "date_updated" : "2008-09-04",
    "source" : "APNIC",
    "addressCountry" : "TAIWAN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "AT939-AP",
    "name" : "ABUSE TWNICAP",
    "address" : [ "3F., No. 123, Sec. 4, Bade Rd., Songshan Dist., Taipei 105, Taiwan" ],
    "street" : "Sec. 4 Bade Rd.",
    "city" : "Taipei",
    "zip_code" : "105",
    "country" : "ZZ",
    "email" : [ "hostmaster@twnic.tw" ],
    "abuse_mailbox" : [ "hostmaster@twnic.tw" ],
    "phone" : [ "+000000000" ],
    "admin_contacts" : [ "TWA2-AP" ],
    "tech_contacts" : [ "TWA2-AP" ],
    "remarks" : [ "Generated from irt object IRT-TWNIC-AP", "hostmaster@twnic.tw was validated on 2025-05-23" ],
    "mnt_by" : [ "APNIC-ABUSE" ],
    "date_updated" : "2025-05-23",
    "source" : "APNIC",
    "addressCountry" : "TAIWAN"
  } ]
}

Peers

AS Number	Description	Country
AS17502	Kuang Shih International Ltd. Ltd	TW
AS9416	Hoshin Multimedia Center Inc.	TW
AS7481	Data Communication Business Group	TW
AS7656	SaveCom International Inc.	TW
AS9831	Unigate Telecom Inc.	TW
AS3462	Data Communication Business Group	TW
AS9671	Trade Van Informaiton Services Co.	TW
AS17408	AboveNet Communications Taiwan	TW
AS9310	Asia Pacific Network Information Centre	AU