ASN AS18426 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS18426?

AS18426 is listed under National Applied Research Laboratories.

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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AS18426 National Applied Research Laboratories

ASN Lookup Tool

National Applied Research Laboratories twnic.net.tw

TW 1 Routes

AS Data

AS18426

AS18426 – National Applied Research Laboratories

AS Number	18426
AS Name	STPI-AS-TW
Organization	National Applied Research Laboratories()
Country	TW
Website	twnic.net.tw
Number of IPv4 Routes	1
Number of IPv6 Routes	0
ASN type	GOVERNMENT
Registry	APNIC
Date Allocated	N/A

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
203.145.192.0/21	AS18426	National Applied Research Laboratories	National Applied Research Laboratories	2048

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 'AS18410 - AS18429'

as-block:       AS18410 - AS18429
descr:          TWNIC-TW-AS-BLOCK8
remarks:        These AS numbers are further assigned by TWNIC
remarks:        to TWNIC members
admin-c:        TWA2-AP
tech-c:         TWA2-AP
mnt-by:         MAINT-TW-TWNIC
mnt-lower:      MAINT-TW-TWNIC
last-modified:  2008-09-04T06:40:26Z
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 'AS18426'

% Abuse contact for 'AS18426' is 'abuse@twaren.net'

aut-num:        AS18426
as-name:        STPI-AS-TW
descr:          National Applied Research Laboratories
descr:          3F, No. 106, Ho-Ping E. Road, Sec. 2 Taipei 106, Taiwan , ROC
descr:          Taipei Taiwan 106
country:        TW
import:         from AS1659 action pref=100; accept ANY
import:         from AS3462 action pref=100; accept ANY
import:         from AS4782 action pref=100; accept ANY
import:         from AS7539 action pref=100; accept ANY
export:         to AS1659 announce AS18426
export:         to AS3462 announce AS18426
export:         to AS4782 announce AS18426
export:         to AS7539 announce AS18426
admin-c:        nNA6-AP
tech-c:         nNA6-AP
abuse-c:        AT939-AP
mnt-by:         MAINT-TW-TWNIC
mnt-irt:        IRT-NARL-TW
last-modified:  2025-11-06T09:26:25Z
source:         APNIC

irt:            IRT-NARL-TW
address:        National Applied Research Laboratories
address:        3F, No. 106, Ho-Ping E. Road, Sec. 2 Taipei 106, Taiwan, ROC
address:        Taipei
phone:          +886-6-505-0940 ext. 790
e-mail:         noc@twaren.net
abuse-mailbox:  abuse@twaren.net
admin-c:        TR469-AP
tech-c:         TR469-AP
remarks:        (oid:NARL)
mnt-by:         MAINT-TW-TWNIC
last-modified:  2025-11-06T07:26:00Z
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

role:           nchc Network Administrator
address:        No.7, R Road VI Hsinchu Science-Based Industrial Park
address:        Hsinchu, Taiwan , R.O.C
country:        TW
phone:          +886-6-505-0940
fax-no:         +886-6-505-0945
e-mail:         noc@twaren.net
admin-c:        TLL14-AP
tech-c:         SC1772-AP
tech-c:         HMT4-AP
nic-hdl:        nNA6-AP
remarks:        The role object should be used when making
remarks:        changes to admin-c or tech-c handle.
notify:         hostmaster@twnic.net.tw
mnt-by:         MAINT-TW-TWNIC
last-modified:  2010-11-19T07:03:41Z
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" : "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" : "AS18410 - AS18429",
    "description" : [ "TWNIC-TW-AS-BLOCK8" ],
    "admin_contacts" : [ "TWA2-AP" ],
    "tech_contacts" : [ "TWA2-AP" ],
    "remarks" : [ "These AS numbers are further assigned by TWNIC", "to TWNIC members" ],
    "mnt_by" : [ "MAINT-TW-TWNIC" ],
    "mnt_lower" : [ "MAINT-TW-TWNIC" ],
    "date_updated" : "2008-09-04",
    "source" : "APNIC"
  } ],
  "aut_nums" : [ {
    "aut_num" : "AS18426",
    "as_name" : "STPI-AS-TW",
    "description" : [ "National Applied Research Laboratories", "3F, No. 106, Ho-Ping E. Road, Sec. 2 Taipei 106, Taiwan , ROC", "Taipei Taiwan 106" ],
    "country" : "TW",
    "import" : [ "from AS1659 action pref=100; accept ANY", "from AS3462 action pref=100; accept ANY", "from AS4782 action pref=100; accept ANY", "from AS7539 action pref=100; accept ANY" ],
    "export" : [ "to AS1659 announce AS18426", "to AS3462 announce AS18426", "to AS4782 announce AS18426", "to AS7539 announce AS18426" ],
    "admin_contacts" : [ "nNA6-AP" ],
    "tech_contacts" : [ "nNA6-AP" ],
    "abuse_contacts" : [ "AT939-AP" ],
    "mnt_irt" : [ "IRT-NARL-TW" ],
    "mnt_by" : [ "MAINT-TW-TWNIC" ],
    "date_updated" : "2025-11-06",
    "source" : "APNIC"
  } ],
  "irt" : {
    "handle" : "IRT-NARL-TW",
    "address" : [ "National Applied Research Laboratories", "3F, No. 106, Ho-Ping E. Road, Sec. 2 Taipei 106, Taiwan, ROC", "Taipei" ],
    "street" : "Ho-ping E. Road Sec. 2",
    "city" : "Roc Taipei",
    "zip_code" : "106",
    "country" : "TAIWAN",
    "email" : [ "noc@twaren.net" ],
    "abuse_mailbox" : [ "abuse@twaren.net" ],
    "phone" : [ "+886-6-505-0940 ext. 790" ],
    "admin_contacts" : [ "TR469-AP" ],
    "tech_contacts" : [ "TR469-AP" ],
    "remarks" : [ "(oid:NARL)" ],
    "mnt_by" : [ "MAINT-TW-TWNIC" ],
    "date_updated" : "2025-11-06",
    "source" : "APNIC"
  },
  "administrative_contacts" : [ {
    "handle" : "nNA6-AP",
    "name" : "nchc Network Administrator",
    "address" : [ "No.7, R Road VI Hsinchu Science-Based Industrial Park", "Hsinchu, Taiwan , R.O.C" ],
    "street" : "No.7 R Road Vi",
    "city" : "Hsinchu",
    "country" : "TW",
    "email" : [ "noc@twaren.net" ],
    "phone" : [ "+886-6-505-0940" ],
    "fax_no" : [ "+886-6-505-0945" ],
    "admin_contacts" : [ "TLL14-AP" ],
    "tech_contacts" : [ "SC1772-AP", "HMT4-AP" ],
    "remarks" : [ "The role object should be used when making", "changes to admin-c or tech-c handle." ],
    "notify" : [ "hostmaster@twnic.net.tw" ],
    "mnt_by" : [ "MAINT-TW-TWNIC" ],
    "date_updated" : "2010-11-19",
    "source" : "APNIC",
    "addressCountry" : "TAIWAN R.O.C"
  } ],
  "technical_contacts" : [ {
    "handle" : "nNA6-AP",
    "name" : "nchc Network Administrator",
    "address" : [ "No.7, R Road VI Hsinchu Science-Based Industrial Park", "Hsinchu, Taiwan , R.O.C" ],
    "street" : "No.7 R Road Vi",
    "city" : "Hsinchu",
    "country" : "TW",
    "email" : [ "noc@twaren.net" ],
    "phone" : [ "+886-6-505-0940" ],
    "fax_no" : [ "+886-6-505-0945" ],
    "admin_contacts" : [ "TLL14-AP" ],
    "tech_contacts" : [ "SC1772-AP", "HMT4-AP" ],
    "remarks" : [ "The role object should be used when making", "changes to admin-c or tech-c handle." ],
    "notify" : [ "hostmaster@twnic.net.tw" ],
    "mnt_by" : [ "MAINT-TW-TWNIC" ],
    "date_updated" : "2010-11-19",
    "source" : "APNIC",
    "addressCountry" : "TAIWAN R.O.C"
  } ],
  "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
AS7539	National Center for High performance Computing	TW
AS3462	Chunghwa Telecom Co., Ltd.	TW
AS18183	National Center for Research on Earthquake Engineering	TW
AS1659	Taiwan Academic Network TANet Information Center	TW
AS4782	Chunghwa Telecom Co., Ltd.	TW
AS7539	National Center for High-performance Computing	TW