ASN AS18425 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS18425?

AS18425 is listed under NTT Taiwan 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?

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AS18425 NTT Taiwan Ltd. | IPGeolocation.io

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NTT Taiwan Ltd. ntt.com

TW 0 Routes

AS Data

AS18425

AS18425 – NTT Taiwan Ltd.

AS Number	18425
AS Name	NTTTW-AS-TW
Organization	NTT Taiwan Ltd.
Country	TW
Website	ntt.com
Number of IPv4 Routes	0
Number of IPv6 Routes	0
ASN type	ISP
Registry	APNIC
Date Allocated	N/A

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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 'AS18425'

% Abuse contact for 'AS18425' is 'nttapac.tw.sp@global.ntt'

aut-num:        AS18425
as-name:        NTTTW-AS-TW
descr:          NTT Taiwan Ltd.
descr:          7F-E Hung Tai Century Tower
descr:          No.156 Min Sheng East Road Sec.3
descr:          Taipei Taiwan
country:        TW
import:         from AS2914 action pref=100; accept ANY
import:         from AS9304 action pref=100; accept ANY
export:         to AS2914 announce AS18425
export:         to AS9304 announce AS18425
admin-c:        JL976-AP
tech-c:         LK116-AP
abuse-c:        AT939-AP
mnt-by:         MAINT-TW-TWNIC
mnt-irt:        IRT-TWNTT-TW
last-modified:  2025-11-06T09:26:21Z
source:         APNIC

irt:            IRT-TWNTT-TW
address:        NTT Taiwan Ltd.
address:        7F-E Hung Tai Century Tower No.156 Min Sheng East Road Sec.3
address:        Taipei Taiwan
e-mail:         nttapac.tw.sp@global.ntt
abuse-mailbox:  nttapac.tw.sp@global.ntt
admin-c:        JL976-AP
tech-c:         JL976-AP
auth:           # Filtered
mnt-by:         MAINT-TW-TWNIC
last-modified:  2025-11-06T07:53:39Z
source:         APNIC

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:         Johnson Liu
nic-hdl:        JL976-AP
e-mail:         johnson.liu@ntt.com
address:        10F, No.28 Ching Cheng St.
address:        Taipei, 105, R.O.C
phone:          +886-2-2547-2565
fax-no:         +886-2-2547-2577
country:        TW
mnt-by:         MAINT-TW-TWNIC
last-modified:  2008-09-04T07:29:23Z
source:         APNIC

person:         Lisa Ko
nic-hdl:        LK116-AP
e-mail:         lisa.ko@ntt.com
address:        10F, No.28 Ching Cheng St.
address:        Taipei, 105, R.O.C
phone:          +886-2-2547-2565
fax-no:         +886-2-2547-2577
country:        TW
mnt-by:         MAINT-TW-TWNIC
last-modified:  2008-09-04T07:29:23Z
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" : "AS18425",
    "as_name" : "NTTTW-AS-TW",
    "description" : [ "NTT Taiwan Ltd.", "7F-E Hung Tai Century Tower", "No.156 Min Sheng East Road Sec.3", "Taipei Taiwan" ],
    "country" : "TW",
    "import" : [ "from AS2914 action pref=100; accept ANY", "from AS9304 action pref=100; accept ANY" ],
    "export" : [ "to AS2914 announce AS18425", "to AS9304 announce AS18425" ],
    "admin_contacts" : [ "JL976-AP" ],
    "tech_contacts" : [ "LK116-AP" ],
    "abuse_contacts" : [ "AT939-AP" ],
    "mnt_irt" : [ "IRT-TWNTT-TW" ],
    "mnt_by" : [ "MAINT-TW-TWNIC" ],
    "date_updated" : "2025-11-06",
    "source" : "APNIC"
  } ],
  "irt" : {
    "handle" : "IRT-TWNTT-TW",
    "address" : [ "NTT Taiwan Ltd.", "7F-E Hung Tai Century Tower No.156 Min Sheng East Road Sec.3", "Taipei Taiwan" ],
    "street" : "Min Sheng East Road Sec.3",
    "city" : "Taipei",
    "country" : "TAIWAN",
    "email" : [ "nttapac.tw.sp@global.ntt" ],
    "abuse_mailbox" : [ "nttapac.tw.sp@global.ntt" ],
    "admin_contacts" : [ "JL976-AP" ],
    "tech_contacts" : [ "JL976-AP" ],
    "mnt_by" : [ "MAINT-TW-TWNIC" ],
    "date_updated" : "2025-11-06",
    "source" : "APNIC"
  },
  "administrative_contacts" : [ {
    "handle" : "JL976-AP",
    "name" : "Johnson Liu",
    "address" : [ "10F, No.28 Ching Cheng St.", "Taipei, 105, R.O.C" ],
    "street" : "Ching Cheng St.",
    "city" : "Taipei",
    "zip_code" : "105",
    "country" : "TW",
    "email" : [ "johnson.liu@ntt.com" ],
    "phone" : [ "+886-2-2547-2565" ],
    "fax_no" : [ "+886-2-2547-2577" ],
    "mnt_by" : [ "MAINT-TW-TWNIC" ],
    "date_updated" : "2008-09-04",
    "source" : "APNIC",
    "addressCountry" : "R.O.C"
  } ],
  "technical_contacts" : [ {
    "handle" : "LK116-AP",
    "name" : "Lisa Ko",
    "address" : [ "10F, No.28 Ching Cheng St.", "Taipei, 105, R.O.C" ],
    "street" : "Ching Cheng St.",
    "city" : "Taipei",
    "zip_code" : "105",
    "country" : "TW",
    "email" : [ "lisa.ko@ntt.com" ],
    "phone" : [ "+886-2-2547-2565" ],
    "fax_no" : [ "+886-2-2547-2577" ],
    "mnt_by" : [ "MAINT-TW-TWNIC" ],
    "date_updated" : "2008-09-04",
    "source" : "APNIC",
    "addressCountry" : "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"
  } ]
}