9920 ISTVC-AS-TW - IMPROVE SYSTEM TECHNOLOGY CO., LTD., TW
Adjacency: 1 Upstream: 1 Downstream: 0
Upstream Adjacent AS list
AS17408 ABOVE-AS-AP - AboveNet Communications Taiwan, TW
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 58729 AS9920 ORIGIN Originate: 256 /24.00 Transit: 0 /0.00 ISTVC-AS-TW - IMPROVE SYSTEM TECHNOLOGY CO., LTD., TW
Aggregation Suggestions
Filter: Aggregates, Specifics
This report does not take into account conditions local to each origin AS in terms of policy or traffic engineering requirements, so this is an approximate guideline as to aggregation possibilities.
Rank AS AS Name Current Wthdw Aggte Annce Redctn % 32005 AS9920 ISTVC-AS-TW - IMPROVE SYSTEM TECHNOLOGY CO., 1 0 0 1 0 0.00% Prefix AS Path Aggregation Suggestion 103.173.95.0/24 4608 6939 17408 9920 9920 9920 9920 9920 9920
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS9920 1 More Specifics 1 Total Advertisements ISTVC-AS-TW - IMPROVE SYSTEM TECHNOLOGY CO., LTD., TW
103.173.95.0/24 103.173.94.0/23
Prefixes added and withdrawn by this origin AS in the past 7 days.
+ 103.173.95.0/24 Announced
whois: 402638
IANA has recorded AS9920 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS9920\n % [whois.apnic.net]
% Whois data copyright terms http://www.apnic.net/db/dbcopyright.html
% Information related to 'AS9249 - AS10239'
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
% Information related to 'AS9915 - AS9924'
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
% Information related to 'AS9920'
% Abuse contact for 'AS9920' is 'tonychang22@istvc.com.tw'
aut-num: AS9920
country: TW
as-name: ISTVC-AS-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 AS41051 action pref=4; networks ANY
default: to AS20473 action pref=2; networks ANY
export: to AS41051 announce AS9920
export: to AS20473 announce AS9920
import: from AS41051 accept ANY
import: from AS20473 accept ANY
remarks: (oid:ISTVC)
last-modified: 2026-01-09T09:51:57Z
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
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