This AS is not currently used to announce prefixes in the global routing table, nor is it used as a visible transit AS.
whois: 402332
IANA has recorded AS18421 as originally allocated by
/usr/bin/whois -h jwhois.apnic.net -r "AS18421\n % [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
% 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
% Information related to 'AS18421'
% Abuse contact for 'AS18421' is 'network@taishinbank.com.tw'
aut-num: AS18421
as-name: TAISHINBANK-AS-T
descr: Taishin International Bank
descr: 6FL., No. 207, Sec 2, Jioutzung Rd., Neihu Chiu
descr: Taipei Taiwan 114
country: TW
import: from AS4780 action pref=100; accept ANY
import: from AS4747 action pref=100; accept ANY
export: to AS4780 announce AS18421
export: to AS4747 announce AS18421
default: to AS4747 action pref=10; networks ANY
admin-c: YL154-AP
tech-c: YL154-AP
abuse-c: AT939-AP
mnt-by: MAINT-TW-TWNIC
mnt-irt: IRT-TAISHINBANK-TW
last-modified: 2025-11-06T09:26:08Z
source: APNIC
% This query was served by the APNIC Whois Service version 1.88.48 (WHOIS-AU4)