18380 SEALCORP-HOLDINGS-LTD-AP Sealcorp Holdings Ltd
Adjacency: 1 Upstream: 1 Downstream: 0
Upstream Adjacent AS list
AS7474 OPTUSCOM-AS01-AU SingTel Optus Pty Ltd
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 12255 AS18380 ORIGIN Originate: 2048 /21.00 Transit: 0 /0.00 SEALCORP-HOLDINGS-LTD-AP Sealcorp Holdings Ltd
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 % 1745 AS18380 SEALCORP-HOLDINGS-LTD-AP Sealcorp Holdin 8 8 1 1 7 87.50% Prefix AS Path Aggregation Suggestion 203.19.168.0/21 4637 7473 7474 18380 + Announce - aggregate of 203.19.168.0/22 (4637 7473 7474 18380) and 203.19.172.0/22 (4637 7473 7474 18380) 203.19.168.0/24 4637 7473 7474 18380 - Withdrawn - aggregated with 203.19.169.0/24 (4637 7473 7474 18380) 203.19.169.0/24 4637 7473 7474 18380 - Withdrawn - aggregated with 203.19.168.0/24 (4637 7473 7474 18380) 203.19.170.0/24 4637 7473 7474 18380 - Withdrawn - aggregated with 203.19.171.0/24 (4637 7473 7474 18380) 203.19.171.0/24 4637 7473 7474 18380 - Withdrawn - aggregated with 203.19.170.0/24 (4637 7473 7474 18380) 203.19.172.0/24 4637 7473 7474 18380 - Withdrawn - aggregated with 203.19.173.0/24 (4637 7473 7474 18380) 203.19.173.0/24 4637 7473 7474 18380 - Withdrawn - aggregated with 203.19.172.0/24 (4637 7473 7474 18380) 203.19.174.0/24 4637 7473 7474 18380 - Withdrawn - aggregated with 203.19.175.0/24 (4637 7473 7474 18380) 203.19.175.0/24 4637 7473 7474 18380 - Withdrawn - aggregated with 203.19.174.0/24 (4637 7473 7474 18380)
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS18380 8 More Specifics 8 Total Advertisements SEALCORP-HOLDINGS-LTD-AP Sealcorp Holdings Ltd
203.19.168.0/24 203.19.168.0/21
203.19.169.0/24 203.19.168.0/21
203.19.170.0/24 203.19.168.0/21
203.19.171.0/24 203.19.168.0/21
203.19.172.0/24 203.19.168.0/21
203.19.173.0/24 203.19.168.0/21
203.19.174.0/24 203.19.168.0/21
203.19.175.0/24 203.19.168.0/21
whois: 402603
IANA has recorded AS18380 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS18380\n % [whois.apnic.net]
% Whois data copyright terms http://www.apnic.net/db/dbcopyright.html
% Information related to 'AS17653 - AS18431'
as-block: AS17653 - AS18431
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: 2019-01-08T23:19:07Z
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 'AS18380'
% Abuse contact for 'AS18380' is 'dl.sns.data.centre.network.run@westpac.com.au'
aut-num: AS18380
as-name: WESTPAC-AS-AP
descr: Westpac Banking Corporation
country: AU
org: ORG-WBC1-AP
admin-c: WBCn1-AP
tech-c: WBCn1-AP
abuse-c: AW985-AP
mnt-by: APNIC-HM
mnt-lower: MAINT-WESTPAC-AU
mnt-routes: MAINT-WESTPAC-AU
mnt-irt: IRT-WESTPAC-AU
last-modified: 2023-09-12T23:13:26Z
source: APNIC
irt: IRT-WESTPAC-AU
address: 4-16 Montgomery Street Kogarah
address: Sydney
address: Australia
e-mail: dl.sns.data.centre.network.run@westpac.com.au
abuse-mailbox: dl.sns.data.centre.network.run@westpac.com.au
admin-c: WBCn1-AP
tech-c: WBCn1-AP
auth: # Filtered
remarks: dl.sns.data.centre.network.run@westpac.com.au was validated on 2026-06-04
mnt-by: MAINT-WESTPAC-AU
last-modified: 2026-06-04T03:54:28Z
source: APNIC
organisation: ORG-WBC1-AP
org-name: Westpac Banking Corporation
org-type: LIR
country: AU
address: 4-16 Montgomery St Kogarah
phone: +61466425111
fax-no: +61-2-99520164
e-mail: martin.el-taher@westpac.com.au
mnt-ref: APNIC-HM
mnt-by: APNIC-HM
last-modified: 2023-09-05T02:15:29Z
source: APNIC
role: ABUSE WESTPACAU
country: ZZ
address: 4-16 Montgomery Street Kogarah
address: Sydney
address: Australia
phone: +000000000
e-mail: dl.sns.data.centre.network.run@westpac.com.au
admin-c: WBCn1-AP
tech-c: WBCn1-AP
nic-hdl: AW985-AP
remarks: Generated from irt object IRT-WESTPAC-AU
remarks: dl.sns.data.centre.network.run@westpac.com.au was validated on 2026-06-04
abuse-mailbox: dl.sns.data.centre.network.run@westpac.com.au
mnt-by: APNIC-ABUSE
last-modified: 2026-06-04T06:16:51Z
source: APNIC
role: WESTPAC BANKING CORPORATION - network administrato
address: 4-16 Montgomery Street Kogarah NSW 2217
country: AU
phone: +61466425111
e-mail: SNSDataCentreNetworkServicesWBC@westpac.com.au
admin-c: WBCn1-AP
tech-c: WBCn1-AP
nic-hdl: WBCN1-AP
mnt-by: MAINT-WESTPAC-AU
last-modified: 2020-06-12T02:30:14Z
source: APNIC
% This query was served by the APNIC Whois Service version 1.88.48 (WHOIS-AU5)