23767 A-STAR-AS-AP A-STAR, SG
Adjacency: 6 Upstream: 6 Downstream: 0
Upstream Adjacent AS list
AS4637 ASN-TELSTRA-GLOBAL Telstra Global, HK
AS18106 VIEWQWEST-SG-AP Viewqwest Pte Ltd, SG
AS149446 FIRMUSGRID-AS-AP Firmus Grid, AU
AS139883 SPTEL-AS-AP SPTEL PTE. LTD., SG
AS134148 SINGAREN-GIX-AS-AP-2 SingAREN, SG
AS23855 SINGAREN-GIX-AS-AP Singapore Advanced Research and Education Network, SG
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 10617 AS23767 ORIGIN Originate: 9472 /18.79 Transit: 0 /0.00 A-STAR-AS-AP A-STAR, 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 % 2771 AS23767 A-STAR-AS-AP A-STAR, SG 31 26 6 11 20 64.52% Prefix AS Path Aggregation Suggestion 103.37.196.0/22 293 134148 23767 + Announce - aggregate of 103.37.196.0/23 (293 134148 23767) and 103.37.198.0/23 (293 134148 23767) 103.37.196.0/24 293 134148 23767 - Withdrawn - aggregated with 103.37.197.0/24 (293 134148 23767) 103.37.197.0/24 293 134148 23767 - Withdrawn - aggregated with 103.37.196.0/24 (293 134148 23767) 103.37.198.0/24 293 134148 23767 - Withdrawn - aggregated with 103.37.199.0/24 (293 134148 23767) 103.37.199.0/24 293 134148 23767 - Withdrawn - aggregated with 103.37.198.0/24 (293 134148 23767) 123.136.64.0/21 293 134148 23767 + Announce - aggregate of 123.136.64.0/22 (293 134148 23767) and 123.136.68.0/22 (293 134148 23767) 123.136.64.0/24 293 134148 23767 - Withdrawn - aggregated with 123.136.65.0/24 (293 134148 23767) 123.136.65.0/24 293 134148 23767 - Withdrawn - aggregated with 123.136.64.0/24 (293 134148 23767) 123.136.66.0/24 293 134148 23767 - Withdrawn - aggregated with 123.136.67.0/24 (293 134148 23767) 123.136.67.0/24 293 134148 23767 - Withdrawn - aggregated with 123.136.66.0/24 (293 134148 23767) 123.136.68.0/24 293 134148 23767 - Withdrawn - aggregated with 123.136.69.0/24 (293 134148 23767) 123.136.69.0/24 293 134148 23767 - Withdrawn - aggregated with 123.136.68.0/24 (293 134148 23767) 123.136.70.0/24 293 134148 23767 - Withdrawn - aggregated with 123.136.71.0/24 (293 134148 23767) 123.136.71.0/24 293 134148 23767 - Withdrawn - aggregated with 123.136.70.0/24 (293 134148 23767) 192.122.131.0/24 293 134148 23767 192.122.132.0/22 293 134148 23767 + Announce - aggregate of 192.122.132.0/23 (293 134148 23767) and 192.122.134.0/23 (293 134148 23767) 192.122.132.0/24 293 134148 23767 - Withdrawn - aggregated with 192.122.133.0/24 (293 134148 23767) 192.122.133.0/24 293 134148 23767 - Withdrawn - aggregated with 192.122.132.0/24 (293 134148 23767) 192.122.134.0/24 293 134148 23767 - Withdrawn - aggregated with 192.122.135.0/24 (293 134148 23767) 192.122.135.0/24 293 134148 23767 - Withdrawn - aggregated with 192.122.134.0/24 (293 134148 23767) 192.122.136.0/22 293 134148 23767 + Announce - aggregate of 192.122.136.0/23 (293 134148 23767) and 192.122.138.0/23 (293 134148 23767) 192.122.136.0/24 293 134148 23767 - Withdrawn - aggregated with 192.122.137.0/24 (293 134148 23767) 192.122.137.0/24 293 134148 23767 - Withdrawn - aggregated with 192.122.136.0/24 (293 134148 23767) 192.122.138.0/24 293 134148 23767 - Withdrawn - aggregated with 192.122.139.0/24 (293 134148 23767) 192.122.139.0/24 293 134148 23767 - Withdrawn - aggregated with 192.122.138.0/24 (293 134148 23767) 192.122.140.0/24 293 134148 23767 202.6.240.0/22 293 134148 23767 + Announce - aggregate of 202.6.240.0/23 (293 134148 23767) and 202.6.242.0/23 (293 134148 23767) 202.6.240.0/24 293 134148 23767 - Withdrawn - aggregated with 202.6.241.0/24 (293 134148 23767) 202.6.241.0/24 293 134148 23767 - Withdrawn - aggregated with 202.6.240.0/24 (293 134148 23767) 202.6.242.0/24 293 134148 23767 - Withdrawn - aggregated with 202.6.243.0/24 (293 134148 23767) 202.6.243.0/24 293 134148 23767 - Withdrawn - aggregated with 202.6.242.0/24 (293 134148 23767) 202.83.248.0/22 293 134148 23767 202.130.56.0/22 6939 134148 23767 202.130.56.0/24 293 23855 23767 202.130.58.0/23 293 134148 23767 + Announce - aggregate of 202.130.58.0/24 (293 134148 23767) and 202.130.59.0/24 (293 134148 23767) 202.130.58.0/24 293 134148 23767 - Withdrawn - aggregated with 202.130.59.0/24 (293 134148 23767) 202.130.59.0/24 293 134148 23767 - Withdrawn - aggregated with 202.130.58.0/24 (293 134148 23767)
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS23767 25 More Specifics 30 Total Advertisements A-STAR-AS-AP A-STAR, SG
103.37.196.0/24 103.37.196.0/22
103.37.197.0/24 103.37.196.0/22
103.37.198.0/24 103.37.196.0/22
103.37.199.0/24 103.37.196.0/22
123.136.64.0/24 123.136.64.0/21
123.136.65.0/24 123.136.64.0/21
123.136.66.0/24 123.136.64.0/21
123.136.67.0/24 123.136.64.0/21
123.136.68.0/24 123.136.64.0/21
123.136.69.0/24 123.136.64.0/21
123.136.70.0/24 123.136.64.0/21
123.136.71.0/24 123.136.64.0/21
192.122.132.0/24 192.122.132.0/22
192.122.133.0/24 192.122.132.0/22
192.122.134.0/24 192.122.132.0/22
192.122.135.0/24 192.122.132.0/22
192.122.136.0/24 192.122.136.0/22
192.122.137.0/24 192.122.136.0/22
192.122.138.0/24 192.122.136.0/22
192.122.139.0/24 192.122.136.0/22
202.6.240.0/24 202.6.240.0/22
202.6.241.0/24 202.6.240.0/22
202.6.242.0/24 202.6.240.0/22
202.6.243.0/24 202.6.240.0/22
202.130.59.0/24 202.130.56.0/22
whois: 402603
IANA has recorded AS23767 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS23767\n % [whois.apnic.net]
% Whois data copyright terms http://www.apnic.net/db/dbcopyright.html
% Information related to 'AS23552 - AS24575'
as-block: AS23552 - AS24575
descr: APNIC ASN block
remarks: These AS numbers are further assigned by APNIC
remarks: to APNIC members and end-users in the APNIC region
remarks: AS23889 has been transfered to AfriNIC
admin-c: HM20-AP
tech-c: HM20-AP
mnt-by: APNIC-HM
mnt-lower: APNIC-HM
last-modified: 2009-09-29T06:04:16Z
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 'AS23701 - AS23772'
as-block: AS23701 - AS23772
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: 2008-09-04T06:40:26Z
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 'AS23767'
% Abuse contact for 'AS23767' is 'ITSS_Network@hq.a-star.edu.sg'
aut-num: AS23767
as-name: A-STAR-AS-AP
descr: A-STAR
descr: Agency for Science, Technology and Research
descr: Research Data Center
descr: Singapore
country: SG
import: from AS23734 action pref=10; accept ANY
import: from AS7610 action pref=100; accept ANY
export: to AS23734 announce AS23767
export: to AS7610 announce AS23767
default: to AS23734 action pref=10; networks ANY
default: to AS7610 action pref=20; networks ANY
remarks: A*STAR BGP4 ADMIN
org: ORG-AA1-AP
admin-c: NS94-AP
tech-c: NS94-AP
abuse-c: AA1894-AP
notify: ITSS_Network_data@hq.a-star.edu.sg
mnt-lower: MAINT-SG-NOC
mnt-routes: MAINT-A-STAR-SG
mnt-by: APNIC-HM
mnt-irt: IRT-A-STAR-SG
last-modified: 2023-10-31T09:29:20Z
source: APNIC
irt: IRT-A-STAR-SG
address: Agency for Science, Technology and Research
address:
address:
address:
e-mail: ITSS_Network@hq.a-star.edu.sg
abuse-mailbox: ITSS_Network@hq.a-star.edu.sg
admin-c: SM2111-AP
tech-c: SM2111-AP
auth: # Filtered
remarks: itss_network@hq.a-star.edu.sg was validated on 2026-06-10
mnt-by: MAINT-A-STAR-SG
last-modified: 2026-06-10T01:25:37Z
source: APNIC
organisation: ORG-AA1-AP
org-name: A*STAR
org-type: LIR
country: SG
address: Agency For Science, Technology And Research
address: 1 Fusionopolis Way,
address: # 20-10 Connexis North Tower
phone: +65-6826-6111
fax-no: +65-67771711
e-mail: contact@a-star.edu.sg
mnt-ref: APNIC-HM
mnt-by: APNIC-HM
last-modified: 2023-09-05T02:14:55Z
source: APNIC
role: ABUSE ASTARSG
country: ZZ
address: Agency for Science, Technology and Research
address:
address:
address:
phone: +000000000
e-mail: ITSS_Network@hq.a-star.edu.sg
admin-c: SM2111-AP
tech-c: SM2111-AP
nic-hdl: AA1894-AP
remarks: Generated from irt object IRT-A-STAR-SG
remarks: itss_network@hq.a-star.edu.sg was validated on 2026-06-10
abuse-mailbox: ITSS_Network@hq.a-star.edu.sg
mnt-by: APNIC-ABUSE
last-modified: 2026-06-10T01:26:01Z
source: APNIC
person: Network Support
nic-hdl: NS94-AP
e-mail: ITSS_Network_data@hq.a-star.edu.sg
address: Agency For Science, Technology And Research
address: 1 Fusionopolis Way,
address: # 20-10 Connexis North Tower
phone: +65-64196588
country: SG
mnt-by: MAINT-SG-NOC
last-modified: 2019-06-25T01:04:09Z
source: APNIC
% This query was served by the APNIC Whois Service version 1.88.48 (WHOIS-AU5)