AS Number
AS9920
AS Name
ISTVC-AS-TW
Org Name
IMPROVE SYSTEM TECHNOLOGY CO., LTD.
Country / Region
Taiwan
Registry

apnic

RegDate

Updated

2022-09-22T22:36:45Z

AS9920 Looking Glass
IPv4Prefixes

1

IPv6Prefixes

0

IPv4 NUMs

256

IPv6 NUMs(/64)

0

256 IPv4 Addresses
CIDR Description IP Num
103.173.94.0/24
ROA Signed and Valid IRR Valid
ISTVC IMPROVE SYSTEM TECHNOLOGY CO., LTD. 256
AS Description Country / Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS20473 AS-CHOOPA - The Constant Company, LLC, US United States 1,206,784 274,119,000,064 IPv4 IPv4
IP Address Domain NUMs Domains
103.173.94.31 2 as9920.net
as-block:       AS9249 - AS10239
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:  2022-09-22T22:36:45Z
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


as-block:       AS9915 - AS9924
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:  2017-06-29T23:49:13Z
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



aut-num:        AS9920
as-name:        ISTVC-AS-TW
descr:          IMPROVE SYSTEM TECHNOLOGY CO., LTD.
descr:          19F-2., No. 37, Sec. 2, Sanmin Rd., Banqiao Dist.,
descr:          New Taipei City 220
country:        TW
import:         from AS41051 accept ANY
import:         from AS20473 accept ANY
export:         to AS41051 announce AS9920
export:         to AS20473 announce AS9920
default:        to AS41051 action pref=4; networks ANY
default:        to AS20473 action pref=2; networks ANY
admin-c:        YC3255-AP
tech-c:         YC3255-AP
abuse-c:        AT939-AP
mnt-by:         MAINT-TW-TWNIC
mnt-irt:        IRT-TWNIC-AP
last-modified:  2022-04-06T07:40:53Z
notify:         tonychang22@istvc.com.tw
source:         APNIC

irt:            IRT-TWNIC-AP
address:        3F., No. 123, Sec. 4, Bade Rd., Songshan Dist., Taipei 105, Taiwan
e-mail:         hostmaster@twnic.net.tw
abuse-mailbox:  hostmaster@twnic.net.tw
admin-c:        TWA2-AP
tech-c:         TWA2-AP
auth:           # Filtered
remarks:        Please note that TWNIC is not an ISP and is not empowered
remarks:        to investigate complaints of network abuse.
remarks:        hostmaster@twnic.net.tw was validated on 2021-11-04
mnt-by:         MAINT-TW-TWNIC
last-modified:  2021-11-04T00:59:51Z
source:         APNIC

role:           ABUSE TWNICAP
address:        3F., No. 123, Sec. 4, Bade Rd., Songshan Dist., Taipei 105, Taiwan
country:        ZZ
phone:          +000000000
e-mail:         hostmaster@twnic.net.tw
admin-c:        TWA2-AP
tech-c:         TWA2-AP
nic-hdl:        AT939-AP
remarks:        Generated from irt object IRT-TWNIC-AP
remarks:        hostmaster@twnic.net.tw was validated on 2021-11-04
abuse-mailbox:  hostmaster@twnic.net.tw
mnt-by:         APNIC-ABUSE
last-modified:  2021-11-04T01:00:32Z
source:         APNIC

person:         YuSheng Chang
address:        19F-2., No. 37, Sec. 2, Sanmin Rd., Banqiao Dist, New Taipei City
country:        TW
phone:          +886932204302
e-mail:         tonychang22@istvc.com.tw
nic-hdl:        YC3255-AP
mnt-by:         MAINT-TW-TWNIC
last-modified:  2023-12-12T07:29:43Z
source:         APNIC