17645 NTT-SG-AP ASN - NTT SINGAPORE PTE LTD, SG
Adjacency: 13 Upstream: 4 Downstream: 9
Upstream Adjacent AS list
AS38561 DOM-AU-AP NTT Australia Solutions Pty Ltd, AU
AS3491 PCCWG-APAC-HK PCCW Global HK Ltd., HK
AS4637 ASN-TELSTRA-GLOBAL Telstra Global, HK
AS2914 NTT-DATA-2914 - NTT America, Inc., US
Downstream Adjacent AS list
AS10236 ATS-ASIA-NETWORK-AS-AP AXA Technology Services Asia HK Limited, HK
AS3741 NTT-DATA-Inc, ZA
AS4657 STARHUB-INTERNET StarHub Ltd, SG
AS139896 FLEX-SGD Kim Chuan Telecommunications Complex, SG
AS56227 ZURICH-AU Zurich Financial Services Australia Limited, AU
AS131789 AKIIAPCL-AS-AP Asahi Kasei International IT Asia Pacific Co., LTD, TH
AS10204 ARCNET-NTTMSC-MY Arcnet NTT MSC ISP, MY
AS46078 DDAP-KBT-AS-AP Dimension Data AP Kaki Bukit Singapore, SG
AS45794 NTT-SG-AP-RFC2270 NTT Singapore - IP Network RFC 2270, SG
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 2548 AS17645 ORG+TRN Originate: 87296 /15.59 Transit: 43520 /16.59 NTT-SG-AP ASN - NTT SINGAPORE PTE LTD, SG
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 % 16080 AS17645 NTT-SG-AP ASN - NTT SINGAPORE PTE LTD, SG 12 2 0 10 2 16.67% Prefix AS Path Aggregation Suggestion 58.65.0.0/19 4777 4713 2914 17645 58.65.16.0/22 4608 7575 3491 17645 58.65.24.0/23 4608 7575 3491 17645 116.51.0.0/16 4777 4713 2914 17645 116.51.4.0/24 4608 7575 3491 17645 116.51.8.0/23 4608 7575 3491 17645 175.28.8.0/22 4777 2497 4637 17645 202.136.160.0/19 4777 4713 2914 17645 202.136.166.0/24 4777 4713 2914 17645 - Withdrawn - matching aggregate 202.136.160.0/19 4777 4713 2914 17645 202.136.168.0/23 4608 7575 3491 17645 202.136.170.0/24 4777 4713 2914 17645 - Withdrawn - matching aggregate 202.136.160.0/19 4777 4713 2914 17645 202.136.188.0/22 4608 7575 3491 17645
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS17645 8 More Specifics 12 Total Advertisements NTT-SG-AP ASN - NTT SINGAPORE PTE LTD, SG
58.65.16.0/22 58.65.0.0/19
58.65.24.0/23 58.65.0.0/19
116.51.4.0/24 116.51.0.0/16
116.51.8.0/23 116.51.0.0/16
202.136.166.0/24 202.136.160.0/19
202.136.168.0/23 202.136.160.0/19
202.136.170.0/24 202.136.160.0/19
202.136.188.0/22 202.136.160.0/19
whois: 402332
IANA has recorded AS17645 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS17645\n % [whois.apnic.net]
% Whois data copyright terms http://www.apnic.net/db/dbcopyright.html
% Information related to 'AS17408 - AS17651'
as-block: AS17408 - AS17651
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: 2019-01-08T23:22:27Z
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 'AS17645'
% Abuse contact for 'AS17645' is 'ap.eis-netops@global.ntt'
aut-num: AS17645
as-name: NTT-SG-AP
descr: ASN - NTT SINGAPORE PTE LTD
descr: A NTT Communications Group Company
country: SG
remarks: For routing information,
remarks: Please refer to RADB or
remarks: NTT Communications Routing Registry (NTTCOM)
remarks: *****************************************************
remarks: Contacts per RFC2142
remarks: *****************************************************
org: ORG-NSPL9-AP
admin-c: NDEI2-AP
tech-c: NDEI2-AP
abuse-c: AN734-AP
notify: nttapac.sg.ip-eng@global.ntt
mnt-lower: MAINT-SG-NTTS
mnt-routes: MAINT-SG-NTTS
mnt-by: APNIC-HM
mnt-irt: IRT-NTT-SG
last-modified: 2025-01-30T08:12:14Z
source: APNIC
irt: IRT-NTT-SG
address: NTT Singapore Pte Ltd, 8 Kallang Avenue,
e-mail: ap.eis-netops@global.ntt
abuse-mailbox: ap.eis-netops@global.ntt
admin-c: NAA7-AP
tech-c: IE11-AP
auth: # Filtered
remarks: ap.eis-netops@global.ntt was validated on 2026-03-25
mnt-by: MAINT-SG-NTTS
last-modified: 2026-03-25T10:47:49Z
source: APNIC
organisation: ORG-NSPL9-AP
org-name: NTT Singapore Pte Ltd
org-type: LIR
country: SG
address: 20 West, Pasir Panjang Road
address: # 11-28, Mapletree Business City
phone: +65-6438-3101
fax-no: +65-6438-3102
e-mail: ap.eis-netops@global.ntt
mnt-ref: APNIC-HM
mnt-by: APNIC-HM
last-modified: 2025-07-02T13:10:19Z
source: APNIC
role: ABUSE NTTSG
country: ZZ
address: NTT Singapore Pte Ltd, 8 Kallang Avenue,
phone: +000000000
e-mail: ap.eis-netops@global.ntt
admin-c: NAA7-AP
tech-c: IE11-AP
nic-hdl: AN734-AP
remarks: Generated from irt object IRT-NTT-SG
remarks: ap.eis-netops@global.ntt was validated on 2026-03-25
abuse-mailbox: ap.eis-netops@global.ntt
mnt-by: APNIC-ABUSE
last-modified: 2026-03-25T10:48:20Z
source: APNIC
person: NTT DATA EIS IP Engineering
address: Ground Floor, Tower 3, Darling Park, 201 Sussex Street, Sydney
country: AU
phone: +61 2 6230 1997
e-mail: ap.eis-netops@global.ntt
nic-hdl: NDEI2-AP
mnt-by: MAINT-NTTEIS-BB
last-modified: 2025-01-30T07:17:22Z
source: APNIC
% Information related to 'IE11-AP'
person: IP ENGINEERING - AS17645
nic-hdl: IE11-AP
e-mail: ap.eis-netops@global.ntt
address: NTT Communications Group Company
address: NTT Singapore Pte Ltd
20 West, Pasir Panjang Road
#11-28, Mapletree Business City, S117439
phone: +65 6973 3612
country: SG
mnt-by: MAINT-SG-NTTS
last-modified: 2025-07-01T09:55:34Z
source: APNIC
% Information related to 'IEA3-AP'
person: IP Engineering - AS17645
address: 20 West, Pasir Panjang Road
#11-28, Mapletree Business City, S117439
country: SG
phone: +65 6973 3612
e-mail: ap.eis-netops@global.ntt
nic-hdl: IEA3-AP
mnt-by: MAINT-SG-NTTS
remarks: *****************************************
To be deleted
*****************************************
last-modified: 2025-07-01T09:55:51Z
source: APNIC
% Information related to 'IEA4-AP'
person: IP ENGINEERING - AS17645
address: NTT Singapore Pte Ltd
20 West, Pasir Panjang Road
#11-28, Mapletree Business City, S117439
country: SG
phone: +65 69733612
e-mail: nttapac.sg.ip-eng@global.ntt
nic-hdl: IEA4-AP
mnt-by: MAINT-NTTS-ISD-NET-SG
last-modified: 2022-07-19T12:09:25Z
source: APNIC
% Information related to 'NAA7-AP'
person: NETWORK ADMIN - AS17645
address: NTT Singapore Pte Ltd
20 West, Pasir Panjang Road
#11-28, Mapletree Business City, S117439
country: SG
phone: +65 6871-5403
e-mail: ap.eis-netops@global.ntt
nic-hdl: NAA7-AP
mnt-by: MAINT-SG-NTTS
last-modified: 2025-07-01T09:56:01Z
source: APNIC
% This query was served by the APNIC Whois Service version 1.88.47 (WHOIS-AU4)