9505 TWGATE-AP Taiwan Internet Gateway, TW
Adjacency: 37 Upstream: 12 Downstream: 25
Upstream Adjacent AS list
AS11164 INTERNET2-I2PX, US
AS9680 HINETUSA HiNet Service Center in U.S.A, TW
AS2497 IIJ Internet Initiative Japan Inc., JP
AS40065 CNSERVERS, US
AS12552 IPO-EU, SE
AS9002 RETN-AS, GB
AS10133 TPIX-AS-TW Chief Telecom Inc., TW
AS6939 HURRICANE, US
AS1299 TWELVE99 Arelion, fka Telia Carrier, SE
AS174 COGENT-174, US
AS2914 NTT-LTD-2914, US
AS3356 LEVEL3, US
Downstream Adjacent AS list
AS45430 SBN-AWN-IIG-AS-AP SBN-IIGAWN-IIG transit provider, TH
AS135140 QYNTKCL-AS-AP Qun Ying Network Technology Hong Kong Co., Limited, HK
AS9264 ASNET Academia Sinica, TW
AS9902 NEOCOMISP-KH-AP NEOCOMISP LIMITED, IPTX Transit and Network Service Provider in Cambodia., KH
AS131659 NETEASE-AS-TW NETEASE, TW
AS4780 SEEDNET Digital United Inc., TW
AS131660 CHTCDN Data Communication Business Group, TW
AS18047 NTHU-TW National Tsing-Hua University, TW
AS17408 ABOVE-AS-AP AboveNet Communications Taiwan, TW
AS11414 NVIDIA-NET, US
AS18183 NCREE National Center for Research on Earthquake Engineering, TW
AS33717 CHT-GLOBAL, US
AS208770 IM-GREACON, IM
AS7478 MACKAY-AS-AP Mackay Telecommunication Inc., TW
AS55547 WOODSNET-PH Unit D,E,F,G 28th Floor, PH
AS45250 VOCOM-AP-AS Vocom International Telecommunications AP Area, TW
AS9304 HUTCHISON-AS-AP HGC Global Communications Limited, HK
AS9416 MULTIMEDIA-AS-AP Hoshin Multimedia Center Inc., TW
AS7533 GLOBALTRANSIT-SC-TW Savecom International Inc., TW
AS9924 TFN-TW Taiwan Fixed Network, Telco and Network Service Provider., TW
AS38325 WTP-AS-AP WTP, SG
AS18182 SONET-TW Sony Network Taiwan Limited, TW
AS17716 NTU-TW National Taiwan University, TW
AS10126 CHTI-IP-AP Taiwan Internet Gateway, TW
AS7532 DIGICENTRE-TW DigiCentre Company Limited, TW
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 5493 AS9505 ORG+TRN Originate: 31232 /17.07 Transit: 456448 /13.20 TWGATE-AP Taiwan Internet Gateway, 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 % 2201 AS9505 TWGATE-AP Taiwan Internet Gateway, TW 34 26 0 8 26 76.47% Prefix AS Path Aggregation Suggestion 66.171.112.0/21 6939 9505 175.41.48.0/20 6939 9505 175.41.48.0/24 6939 9505 - Withdrawn - matching aggregate 175.41.48.0/20 6939 9505 175.41.49.0/24 6939 9505 - Withdrawn - matching aggregate 175.41.48.0/20 6939 9505 175.41.50.0/24 6939 9505 - Withdrawn - matching aggregate 175.41.48.0/20 6939 9505 175.41.51.0/24 6939 9505 - Withdrawn - matching aggregate 175.41.48.0/20 6939 9505 175.41.52.0/24 6939 9505 - Withdrawn - matching aggregate 175.41.48.0/20 6939 9505 175.41.54.0/24 6939 9505 - Withdrawn - matching aggregate 175.41.48.0/20 6939 9505 175.41.55.0/24 6939 9505 - Withdrawn - matching aggregate 175.41.48.0/20 6939 9505 175.41.56.0/24 6939 9505 - Withdrawn - matching aggregate 175.41.48.0/20 6939 9505 175.41.57.0/24 6939 9505 - Withdrawn - matching aggregate 175.41.48.0/20 6939 9505 175.41.58.0/24 6939 9505 - Withdrawn - matching aggregate 175.41.48.0/20 6939 9505 175.41.61.0/24 6939 9505 - Withdrawn - matching aggregate 175.41.48.0/20 6939 9505 175.41.62.0/24 6939 9505 - Withdrawn - matching aggregate 175.41.48.0/20 6939 9505 175.41.63.0/24 6939 9505 - Withdrawn - matching aggregate 175.41.48.0/20 6939 9505 175.111.224.0/20 6939 9505 175.111.235.0/24 6939 9505 - Withdrawn - matching aggregate 175.111.224.0/20 6939 9505 175.111.236.0/24 6939 9505 - Withdrawn - matching aggregate 175.111.224.0/20 6939 9505 175.111.237.0/24 6939 9505 - Withdrawn - matching aggregate 175.111.224.0/20 6939 9505 175.111.238.0/24 6939 9505 - Withdrawn - matching aggregate 175.111.224.0/20 6939 9505 175.111.239.0/24 6939 9505 - Withdrawn - matching aggregate 175.111.224.0/20 6939 9505 175.111.240.0/21 6939 9505 203.78.176.0/20 6939 9505 203.78.179.0/24 6939 9505 - Withdrawn - matching aggregate 203.78.176.0/20 6939 9505 203.78.180.0/24 6939 9505 - Withdrawn - matching aggregate 203.78.176.0/20 6939 9505 203.78.182.0/24 6939 9505 - Withdrawn - matching aggregate 203.78.176.0/20 6939 9505 203.160.224.0/20 6939 9505 203.160.231.0/24 6939 9505 - Withdrawn - matching aggregate 203.160.224.0/20 6939 9505 203.160.232.0/24 6939 9505 - Withdrawn - matching aggregate 203.160.224.0/20 6939 9505 203.160.233.0/24 6939 9505 - Withdrawn - matching aggregate 203.160.224.0/20 6939 9505 203.160.235.0/24 6939 9505 - Withdrawn - matching aggregate 203.160.224.0/20 6939 9505 208.70.200.0/21 6939 9505 220.128.48.0/21 6939 9505 220.128.48.0/24 6939 9505 - Withdrawn - matching aggregate 220.128.48.0/21 6939 9505
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS9505 28 More Specifics 31 Total Advertisements TWGATE-AP Taiwan Internet Gateway, TW
66.171.112.0/21 66.171.112.0/20
175.41.48.0/24 175.41.48.0/20
175.41.49.0/24 175.41.48.0/20
175.41.50.0/24 175.41.48.0/20
175.41.51.0/24 175.41.48.0/20
175.41.52.0/24 175.41.48.0/20
175.41.54.0/24 175.41.48.0/20
175.41.55.0/24 175.41.48.0/20
175.41.56.0/24 175.41.48.0/20
175.41.57.0/24 175.41.48.0/20
175.41.58.0/24 175.41.48.0/20
175.41.61.0/24 175.41.48.0/20
175.41.62.0/24 175.41.48.0/20
175.41.63.0/24 175.41.48.0/20
175.111.224.0/20 175.111.192.0/18
175.111.224.0/24 175.111.192.0/18
175.111.239.0/24 175.111.192.0/18
175.111.240.0/21 175.111.192.0/18
203.78.179.0/24 203.78.176.0/20
203.78.180.0/24 203.78.176.0/20
203.78.182.0/24 203.78.176.0/20
203.78.190.0/24 203.78.176.0/20
203.160.224.0/20 203.160.224.0/19
203.160.232.0/24 203.160.224.0/19
203.160.233.0/24 203.160.224.0/19
203.160.235.0/24 203.160.224.0/19
220.128.48.0/21 220.128.0.0/18
220.128.48.0/24 220.128.0.0/18
Prefixes added and withdrawn by this origin AS in the past 7 days.
+ 203.78.190.0/24 Announced
whois: 402603
IANA has recorded AS9505 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS9505\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 'AS9505'
% Abuse contact for 'AS9505' is 'b-noc@cht.com.tw'
aut-num: AS9505
as-name: TWGATE-AP
descr: Taiwan Internet Gateway
descr: Chunghwa Telecom -- International Business Group
descr: Room 503, # 31, Aikuo East Road, Taipei 106
country: TW
import: from AS6453 action pref=100; accept ANY
export: to AS6453 announce AS-TWIG
org: ORG-CTCL1-AP
admin-c: WS31-AP
tech-c: MY37-AP
abuse-c: AH890-AP
mnt-lower: MAINT-TW-CHTI
mnt-routes: MAINT-TW-CHTI
mnt-by: APNIC-HM
mnt-irt: IRT-HINET-TW
last-modified: 2020-06-10T13:05:50Z
source: APNIC
irt: IRT-HINET-TW
address: Chunghwa Telecom - International Business Group (CHTI)
address: 5F(R511),
e-mail: b-noc@cht.com.tw
abuse-mailbox: b-noc@cht.com.tw
admin-c: WS31-AP
tech-c: WS31-AP
auth: # Filtered
remarks: b-noc@cht.com.tw was validated on 2026-04-22
mnt-by: MAINT-TW-CHTI
last-modified: 2026-04-22T01:15:18Z
source: APNIC
organisation: ORG-CTCL1-AP
org-name: Chunghwa Telecom Co., Ltd.
org-type: LIR
country: TW
address: IP Transport Network Planning & Design Department
address: Chunghwa Telecom
address: Network Technology Branch
address: 21 Sec 1, Hsin-Yi Rd
phone: +886-2-23444600
fax-no: +886-2-23442513
e-mail: b-noc@cht.com.tw
mnt-ref: APNIC-HM
mnt-by: APNIC-HM
last-modified: 2023-09-05T02:14:45Z
source: APNIC
role: ABUSE HINETTW
country: ZZ
address: Chunghwa Telecom - International Business Group (CHTI)
address: 5F(R511),
phone: +000000000
e-mail: b-noc@cht.com.tw
admin-c: WS31-AP
tech-c: WS31-AP
nic-hdl: AH890-AP
remarks: Generated from irt object IRT-HINET-TW
remarks: b-noc@cht.com.tw was validated on 2026-04-22
abuse-mailbox: b-noc@cht.com.tw
mnt-by: APNIC-ABUSE
last-modified: 2026-04-22T01:15:48Z
source: APNIC
person: Ming-Hsien Yang
address: Chunghwa Telecom - International Business Group (CHT-I)
address: 7F(R707), #31, Aikuo East Road, Taipei ,Taiwan, 106 R.O.C
country: TW
phone: +886-2-23443574
fax-no: +886-2-23568357
e-mail: mhyang@chti.com.tw
nic-hdl: MY37-AP
mnt-by: MAINT-TW-CHTI
last-modified: 2008-09-04T07:29:17Z
source: APNIC
person: Wen-Shyang Shiau
address: Chunghwa Telecom - International Business Group (CHTI)
address: 5F(R511), #31, Aikuo East Road, Taipei,Taiwan, 106 R.O.C
country: TW
phone: +886-2-23443916
fax-no: +886-2-23443577
e-mail: wsshiau@chti.com.tw
nic-hdl: WS31-AP
mnt-by: MAINT-TW-CHTI
last-modified: 2008-09-04T07:29:17Z
source: APNIC
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