AS Number
AS152614
AS Name
ISTVC-EX-TW
Org Name
IMPROVE SYSTEM TECHNOLOGY CO., LTD.
Country
Taiwan
Registry

apnic

RegDate

Updated

2023-05-11T00:08:47Z

AS152614 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
IRR InValid
ISTVC IMPROVE SYSTEM TECHNOLOGY CO., LTD. 256
AS Description Country/Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS20473 AS-VULTR - The Constant Company, LLC, US United States 1,462,016 161,921,761,280 IPv4 IPv4
AS212895 ROUTE64_ORG - Johannes Ernst, DE Germany 512 255,459,328 IPv4 IPv4
as-block:       AS151866 - AS152889
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:  2023-05-11T00:08:47Z
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:       AS152609 - AS152628
descr:          TWNIC-TW-4-byte-AS-BLOCK1
descr:          These AS numbers are further assigned by TWNIC
descr:          to TWNIC members
country:        TW
org:            ORG-TNIC1-AP
admin-c:        TWA2-AP
tech-c:         TWA2-AP
mnt-by:         MAINT-TW-TWNIC
mnt-lower:      MAINT-TW-TWNIC
last-modified:  2024-03-04T22:37:07Z
source:         APNIC

organisation:   ORG-TNIC1-AP
org-name:       Taiwan Network Information Center
org-type:       NIR
country:        TW
address:        4 F-2, No.9 Roosevelt Rd. Sec. 2
phone:          +886-2-2341-1313-300
fax-no:         +886-2-2396-8871
e-mail:         hostmaster@twnic.net.tw
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T01:49:57Z
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:        AS152614
country:        TW
as-name:        ISTVC-EX-TW
admin-c:        TR413-AP
tech-c:         TR413-AP
abuse-c:        TR413-AP
mnt-irt:        IRT-ISTVC-TW
descr:          IMPROVE SYSTEM TECHNOLOGY CO., LTD.
descr:          19F-2., No. 37, Sec. 2, Sanmin Rd., Banqiao Dist., New Taipei City 220
default:        to AS20473 action pref=2; networks ANY
export:         to AS20473 announce AS9920
export:         to AS6939 announce AS9920
import:         from AS20473 accept ANY
import:         from AS6939 accept ANY
remarks:        (oid:ISTVC)
last-modified:  2026-03-02T09:54:08Z
source:         APNIC
mnt-by:         MAINT-TW-TWNIC

irt:            IRT-ISTVC-TW
address:        IMPROVE SYSTEM TECHNOLOGY CO., LTD.
address:        19F-2., No. 37, Sec. 2, Sanmin Rd., Banqiao Dist.,
address:        New Taipei City 220
e-mail:         tonychang22@istvc.com.tw
abuse-mailbox:  tonychang22@istvc.com.tw
admin-c:        TR413-AP
tech-c:         TR413-AP
auth:           # Filtered
mnt-by:         MAINT-TW-TWNIC
last-modified:  2026-03-03T00:51:38Z
source:         APNIC

role:           TWNIC ROLE-ISTVC
nic-hdl:        TR413-AP
address:        IMPROVE SYSTEM TECHNOLOGY CO., LTD.
address:        19F-2., No. 37, Sec. 2, Sanmin Rd., Banqiao Dist., New Taipei City 220
country:        TW
phone:          +886-2-29569810
e-mail:         proton@istvc.com.tw
abuse-mailbox:  proton@istvc.com.tw
admin-c:        PC1087-AP
tech-c:         PC1087-AP
remarks:        (hid:PC0916-S-TW)
last-modified:  2026-01-09T09:55:25Z
source:         APNIC
mnt-by:         MAINT-TW-TWNIC


as-block:       AS151866 - AS152889
descr:          APNIC ASN block
admin-c:        IA55-AP
tech-c:         IH123-AP
mnt-by:         MNT-APJII-ID
mnt-lower:      MNT-APJII-ID
last-modified:  2026-02-13T18:14:02Z
source:         IDNIC

role:           ID-NIC ADMINISTRATORS
address:        Indonesian Network Information Center
address:        ID-NIC
address:        Cyber Building 11th Floor
address:        Jakarta 12710
country:        ID
phone:          +62-21-52960634
fax-no:         +62-21-52960635
e-mail:         hostmaster@idnic.net
admin-c:        IH288-AP
tech-c:         IH288-AP
nic-hdl:        IA55-AP
notify:         hostmaster@idnic.net
mnt-by:         MNT-APJII-ID
last-modified:  2026-02-25T04:06:45Z
source:         IDNIC

role:           ID-NIC HOSTMASTERS
address:        Indonesian Network Information Center
address:        ID-NIC
address:        Cyber Building 11th Floor
address:        Jakarta 12710
country:        ID
phone:          +62-21-52960634
fax-no:         +62-21-52960635
e-mail:         hostmaster@idnic.net
remarks:        spam and abuse report : abuse@apjii.or.id
remarks:        technical and routing : support@apjii.or.id
remarks:        administrative request : admin@apjii.or.id
remarks:        IDNIC hostmasters role object
admin-c:        IH1-AP
tech-c:         IH1-AP
nic-hdl:        IH123-AP
notify:         hostmaster@idnic.net
mnt-by:         MNT-APJII-ID
last-modified:  2024-07-10T05:48:59Z
source:         IDNIC