ASN AS18177 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS18177?

AS18177 is listed under National Cheng Kung University.

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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AS18177 National Cheng Kung University

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National Cheng Kung University twnic.net.tw

TW 0 Routes

AS Data

AS18177

AS18177 – National Cheng Kung University

AS Number	18177
AS Name	NCKU-TW
Organization	National Cheng Kung University
Country	TW
Website	twnic.net.tw
Number of IPv4 Routes	0
Number of IPv6 Routes	0
ASN type	EDUCATION
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 'AS18177 - AS18185'

as-block:       AS18177 - AS18185
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:  2024-11-05T01:42:24Z
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 'AS18177'

% Abuse contact for 'AS18177' is 'noc@mail.moe.gov.tw'

aut-num:        AS18177
as-name:        NCKU-TW
descr:          National Cheng Kung University
descr:          1, Ta-Hsueh Road, Tainan City, Taiwan
country:        TW
import:         from AS1659 action pref=10; accept ANY
import:         from AS3462 action pref=20; accept ANY
import:         from AS9415 action pref=20; accept ANY
export:         to AS1659 announce AS18177
export:         to AS3462 announce AS18177
export:         to AS9415 announce AS18177
default:        to AS1659 action pref=5; networks ANY
admin-c:        AN205-AP
tech-c:         AN205-AP
abuse-c:        AT939-AP
notify:         hostmaster@twnic.net.tw
mnt-by:         MAINT-TW-TWNIC
mnt-irt:        IRT-TANET-TW
last-modified:  2025-11-06T09:09:12Z
source:         APNIC

irt:            IRT-TANET-TW
address:        Ministry of Education computer Center
address:        12F, No 106, Sec. 2, Heping E. Rd., Taipei
e-mail:         noc@mail.moe.gov.tw
abuse-mailbox:  noc@mail.moe.gov.tw
admin-c:        TWA2-AP
tech-c:         TWA2-AP
auth:           # Filtered
mnt-by:         MAINT-TW-TWNIC
last-modified:  2025-11-06T07:51:48Z
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:         Abuse Ncku
nic-hdl:        AN205-AP
e-mail:         abuse@mail.ncku.edu.tw
address:        Computer and Network Center
address:        Natinal Cheng Kung University
address:        1, Ta-Hsueh Road,Tainan City, Taiwan
phone:          +886-6-275-7575 ext. 61017
fax-no:         +886-6-236-8855
country:        TW
mnt-by:         MAINT-TW-TWNIC
last-modified:  2008-09-04T07:43:14Z
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" : "AS18177 - AS18185",
    "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" : "2024-11-05",
    "source" : "APNIC"
  } ],
  "aut_nums" : [ {
    "aut_num" : "AS18177",
    "as_name" : "NCKU-TW",
    "description" : [ "National Cheng Kung University", "1, Ta-Hsueh Road, Tainan City, Taiwan" ],
    "country" : "TW",
    "import" : [ "from AS1659 action pref=10; accept ANY", "from AS3462 action pref=20; accept ANY", "from AS9415 action pref=20; accept ANY" ],
    "export" : [ "to AS1659 announce AS18177", "to AS3462 announce AS18177", "to AS9415 announce AS18177" ],
    "default" : [ "to AS1659 action pref=5; networks ANY" ],
    "admin_contacts" : [ "AN205-AP" ],
    "tech_contacts" : [ "AN205-AP" ],
    "abuse_contacts" : [ "AT939-AP" ],
    "notify" : [ "hostmaster@twnic.net.tw" ],
    "mnt_irt" : [ "IRT-TANET-TW" ],
    "mnt_by" : [ "MAINT-TW-TWNIC" ],
    "date_updated" : "2025-11-06",
    "source" : "APNIC"
  } ],
  "irt" : {
    "handle" : "IRT-TANET-TW",
    "address" : [ "Ministry of Education computer Center", "12F, No 106, Sec. 2, Heping E. Rd., Taipei" ],
    "street" : "No 106 Sec. 2 Heping E. Rd.",
    "city" : "Taipei",
    "email" : [ "noc@mail.moe.gov.tw" ],
    "abuse_mailbox" : [ "noc@mail.moe.gov.tw" ],
    "admin_contacts" : [ "TWA2-AP" ],
    "tech_contacts" : [ "TWA2-AP" ],
    "mnt_by" : [ "MAINT-TW-TWNIC" ],
    "date_updated" : "2025-11-06",
    "source" : "APNIC"
  },
  "administrative_contacts" : [ {
    "handle" : "AN205-AP",
    "name" : "Abuse Ncku",
    "address" : [ "Computer and Network Center", "Natinal Cheng Kung University", "1, Ta-Hsueh Road,Tainan City, Taiwan" ],
    "street" : "Ta-hsueh Road",
    "city" : "Tainan City",
    "country" : "TW",
    "email" : [ "abuse@mail.ncku.edu.tw" ],
    "phone" : [ "+886-6-275-7575 ext. 61017" ],
    "fax_no" : [ "+886-6-236-8855" ],
    "mnt_by" : [ "MAINT-TW-TWNIC" ],
    "date_updated" : "2008-09-04",
    "source" : "APNIC",
    "addressCountry" : "TAIWAN"
  } ],
  "technical_contacts" : [ {
    "handle" : "AN205-AP",
    "name" : "Abuse Ncku",
    "address" : [ "Computer and Network Center", "Natinal Cheng Kung University", "1, Ta-Hsueh Road,Tainan City, Taiwan" ],
    "street" : "Ta-hsueh Road",
    "city" : "Tainan City",
    "country" : "TW",
    "email" : [ "abuse@mail.ncku.edu.tw" ],
    "phone" : [ "+886-6-275-7575 ext. 61017" ],
    "fax_no" : [ "+886-6-236-8855" ],
    "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
AS9415	Asia Pacific Network Information Centre	AU
AS9924	Taiwan Fixed Network, Telco and Network Service Provider.	TW
AS3462	Chunghwa Telecom Co., Ltd.	TW
AS3462	Data Communication Business Group	TW
AS1659	Taiwan Academic Network TANet Information Center	TW
AS4780	Digital United Inc.	TW