23881 UDOMAIN-AS-AP UDomain Web Hosting Company Ltd, HK
Adjacency: 5 Upstream: 5 Downstream: 0
Upstream Adjacent AS list
AS140570 HKBCS-AS-AP Hong Kong Beecloud System Technology Services Limited, HK
AS4515 PCCW-AS-AP PCCW IMS Ltd PCCW Business Internet Access, HK
AS10098 HENDERSON-HK Towngas Telecommunications Fixed Network Ltd, HK
AS60068 CDN77 _, GB
AS9304 HUTCHISON-AS-AP HGC Global Communications Limited, HK
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 7358 AS23881 ORIGIN Originate: 17920 /17.87 Transit: 0 /0.00 UDOMAIN-AS-AP UDomain Web Hosting Company Ltd, HK
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 % 1875 AS23881 UDOMAIN-AS-AP UDomain Web Hosting Company Ltd 70 48 17 39 31 44.29% Prefix AS Path Aggregation Suggestion 23.226.0.0/22 4777 140570 23881 + Announce - aggregate of 23.226.0.0/23 (4777 140570 23881) and 23.226.2.0/23 (4777 140570 23881) 23.226.0.0/24 4777 140570 23881 - Withdrawn - aggregated with 23.226.1.0/24 (4777 140570 23881) 23.226.1.0/24 4777 140570 23881 - Withdrawn - aggregated with 23.226.0.0/24 (4777 140570 23881) 23.226.2.0/24 4777 140570 23881 - Withdrawn - aggregated with 23.226.3.0/24 (4777 140570 23881) 23.226.3.0/24 4777 140570 23881 - Withdrawn - aggregated with 23.226.2.0/24 (4777 140570 23881) 23.226.4.0/24 4777 140570 23881 23.226.6.0/23 4777 140570 23881 + Announce - aggregate of 23.226.6.0/24 (4777 140570 23881) and 23.226.7.0/24 (4777 140570 23881) 23.226.6.0/24 4777 140570 23881 - Withdrawn - aggregated with 23.226.7.0/24 (4777 140570 23881) 23.226.7.0/24 4777 140570 23881 - Withdrawn - aggregated with 23.226.6.0/24 (4777 140570 23881) 23.226.8.0/24 4777 140570 23881 23.226.11.0/24 4777 140570 23881 45.121.192.0/24 4777 140570 23881 45.121.194.0/24 4777 140570 23881 45.121.196.0/22 4777 140570 23881 + Announce - aggregate of 45.121.196.0/23 (4777 140570 23881) and 45.121.198.0/23 (4777 140570 23881) 45.121.196.0/24 4777 140570 23881 - Withdrawn - aggregated with 45.121.197.0/24 (4777 140570 23881) 45.121.197.0/24 4777 140570 23881 - Withdrawn - aggregated with 45.121.196.0/24 (4777 140570 23881) 45.121.198.0/24 4777 140570 23881 - Withdrawn - aggregated with 45.121.199.0/24 (4777 140570 23881) 45.121.199.0/24 4777 140570 23881 - Withdrawn - aggregated with 45.121.198.0/24 (4777 140570 23881) 45.121.200.0/24 4777 140570 23881 45.121.201.0/24 4777 2516 6830 60068 23881 45.121.203.0/24 4777 140570 23881 103.15.180.0/23 4777 140570 23881 + Announce - aggregate of 103.15.180.0/24 (4777 140570 23881) and 103.15.181.0/24 (4777 140570 23881) 103.15.180.0/24 4777 140570 23881 - Withdrawn - aggregated with 103.15.181.0/24 (4777 140570 23881) 103.15.181.0/24 4777 140570 23881 - Withdrawn - aggregated with 103.15.180.0/24 (4777 140570 23881) 103.15.183.0/24 4777 140570 23881 103.15.192.0/24 4777 2516 3257 10098 10098 10098 23881 103.15.194.0/23 4777 140570 23881 + Announce - aggregate of 103.15.194.0/24 (4777 140570 23881) and 103.15.195.0/24 (4777 140570 23881) 103.15.194.0/24 4777 140570 23881 - Withdrawn - aggregated with 103.15.195.0/24 (4777 140570 23881) 103.15.195.0/24 4777 140570 23881 - Withdrawn - aggregated with 103.15.194.0/24 (4777 140570 23881) 103.15.196.0/23 4777 140570 23881 + Announce - aggregate of 103.15.196.0/24 (4777 140570 23881) and 103.15.197.0/24 (4777 140570 23881) 103.15.196.0/24 4777 140570 23881 - Withdrawn - aggregated with 103.15.197.0/24 (4777 140570 23881) 103.15.197.0/24 4777 140570 23881 - Withdrawn - aggregated with 103.15.196.0/24 (4777 140570 23881) 103.15.199.0/24 4777 140570 23881 103.19.25.0/24 4777 140570 23881 103.19.26.0/23 4777 140570 23881 + Announce - aggregate of 103.19.26.0/24 (4777 140570 23881) and 103.19.27.0/24 (4777 140570 23881) 103.19.26.0/24 4777 140570 23881 - Withdrawn - aggregated with 103.19.27.0/24 (4777 140570 23881) 103.19.27.0/24 4777 140570 23881 - Withdrawn - aggregated with 103.19.26.0/24 (4777 140570 23881) 162.247.0.0/24 4777 140570 23881 162.247.2.0/23 4777 140570 23881 + Announce - aggregate of 162.247.2.0/24 (4777 140570 23881) and 162.247.3.0/24 (4777 140570 23881) 162.247.2.0/24 4777 140570 23881 - Withdrawn - aggregated with 162.247.3.0/24 (4777 140570 23881) 162.247.3.0/24 4777 140570 23881 - Withdrawn - aggregated with 162.247.2.0/24 (4777 140570 23881) 203.90.224.0/22 4777 140570 23881 + Announce - aggregate of 203.90.224.0/23 (4777 140570 23881) and 203.90.226.0/23 (4777 140570 23881) 203.90.224.0/24 4777 140570 23881 - Withdrawn - aggregated with 203.90.225.0/24 (4777 140570 23881) 203.90.225.0/24 4777 140570 23881 - Withdrawn - aggregated with 203.90.224.0/24 (4777 140570 23881) 203.90.226.0/24 4777 140570 23881 - Withdrawn - aggregated with 203.90.227.0/24 (4777 140570 23881) 203.90.227.0/24 4777 140570 23881 - Withdrawn - aggregated with 203.90.226.0/24 (4777 140570 23881) 203.90.228.0/23 4777 140570 23881 + Announce - aggregate of 203.90.228.0/24 (4777 140570 23881) and 203.90.229.0/24 (4777 140570 23881) 203.90.228.0/24 4777 140570 23881 - Withdrawn - aggregated with 203.90.229.0/24 (4777 140570 23881) 203.90.229.0/24 4777 140570 23881 - Withdrawn - aggregated with 203.90.228.0/24 (4777 140570 23881) 203.90.230.0/24 4777 140570 23881 203.90.254.0/24 4777 140570 23881 203.135.128.0/24 4777 140570 23881 203.135.129.0/24 4608 7575 9304 23881 203.135.130.0/23 4777 140570 23881 + Announce - aggregate of 203.135.130.0/24 (4777 140570 23881) and 203.135.131.0/24 (4777 140570 23881) 203.135.130.0/24 4777 140570 23881 - Withdrawn - aggregated with 203.135.131.0/24 (4777 140570 23881) 203.135.131.0/24 4777 140570 23881 - Withdrawn - aggregated with 203.135.130.0/24 (4777 140570 23881) 203.135.132.0/24 4777 2497 3491 4515 23881 23881 203.135.133.0/24 4777 140570 23881 203.135.134.0/23 4777 140570 23881 + Announce - aggregate of 203.135.134.0/24 (4777 140570 23881) and 203.135.135.0/24 (4777 140570 23881) 203.135.134.0/24 4777 140570 23881 - Withdrawn - aggregated with 203.135.135.0/24 (4777 140570 23881) 203.135.135.0/24 4777 140570 23881 - Withdrawn - aggregated with 203.135.134.0/24 (4777 140570 23881) 203.135.136.0/21 4777 140570 23881 + Announce - aggregate of 203.135.136.0/22 (4777 140570 23881) and 203.135.140.0/22 (4777 140570 23881) 203.135.136.0/24 4777 140570 23881 - Withdrawn - aggregated with 203.135.137.0/24 (4777 140570 23881) 203.135.137.0/24 4777 140570 23881 - Withdrawn - aggregated with 203.135.136.0/24 (4777 140570 23881) 203.135.138.0/24 4777 140570 23881 - Withdrawn - aggregated with 203.135.139.0/24 (4777 140570 23881) 203.135.139.0/24 4777 140570 23881 - Withdrawn - aggregated with 203.135.138.0/24 (4777 140570 23881) 203.135.140.0/24 4777 140570 23881 - Withdrawn - aggregated with 203.135.141.0/24 (4777 140570 23881) 203.135.141.0/24 4777 140570 23881 - Withdrawn - aggregated with 203.135.140.0/24 (4777 140570 23881) 203.135.142.0/24 4777 140570 23881 - Withdrawn - aggregated with 203.135.143.0/24 (4777 140570 23881) 203.135.143.0/24 4777 140570 23881 - Withdrawn - aggregated with 203.135.142.0/24 (4777 140570 23881) 203.135.146.0/23 4777 140570 23881 + Announce - aggregate of 203.135.146.0/24 (4777 140570 23881) and 203.135.147.0/24 (4777 140570 23881) 203.135.146.0/24 4777 140570 23881 - Withdrawn - aggregated with 203.135.147.0/24 (4777 140570 23881) 203.135.147.0/24 4777 140570 23881 - Withdrawn - aggregated with 203.135.146.0/24 (4777 140570 23881) 203.135.148.0/22 4777 140570 23881 + Announce - aggregate of 203.135.148.0/23 (4777 140570 23881) and 203.135.150.0/23 (4777 140570 23881) 203.135.148.0/24 4777 140570 23881 - Withdrawn - aggregated with 203.135.149.0/24 (4777 140570 23881) 203.135.149.0/24 4777 140570 23881 - Withdrawn - aggregated with 203.135.148.0/24 (4777 140570 23881) 203.135.150.0/24 4777 140570 23881 - Withdrawn - aggregated with 203.135.151.0/24 (4777 140570 23881) 203.135.151.0/24 4777 140570 23881 - Withdrawn - aggregated with 203.135.150.0/24 (4777 140570 23881) 203.135.153.0/24 4777 140570 23881 203.135.154.0/23 4777 140570 23881 + Announce - aggregate of 203.135.154.0/24 (4777 140570 23881) and 203.135.155.0/24 (4777 140570 23881) 203.135.154.0/24 4777 140570 23881 - Withdrawn - aggregated with 203.135.155.0/24 (4777 140570 23881) 203.135.155.0/24 4777 140570 23881 - Withdrawn - aggregated with 203.135.154.0/24 (4777 140570 23881) 203.135.156.0/24 4608 7575 9304 23881 203.135.157.0/24 4777 140570 23881 203.135.158.0/23 4777 140570 23881 + Announce - aggregate of 203.135.158.0/24 (4777 140570 23881) and 203.135.159.0/24 (4777 140570 23881) 203.135.158.0/24 4777 140570 23881 - Withdrawn - aggregated with 203.135.159.0/24 (4777 140570 23881) 203.135.159.0/24 4777 140570 23881 - Withdrawn - aggregated with 203.135.158.0/24 (4777 140570 23881)
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS23881 70 More Specifics 70 Total Advertisements UDOMAIN-AS-AP UDomain Web Hosting Company Ltd, HK
23.226.0.0/24 23.226.0.0/20
23.226.1.0/24 23.226.0.0/20
23.226.2.0/24 23.226.0.0/20
23.226.3.0/24 23.226.0.0/20
23.226.4.0/24 23.226.0.0/20
23.226.6.0/24 23.226.0.0/20
23.226.7.0/24 23.226.0.0/20
23.226.8.0/24 23.226.0.0/20
23.226.11.0/24 23.226.0.0/20
45.121.192.0/24 45.121.192.0/22
45.121.194.0/24 45.121.192.0/22
45.121.196.0/24 45.121.196.0/22
45.121.197.0/24 45.121.196.0/22
45.121.198.0/24 45.121.196.0/22
45.121.199.0/24 45.121.196.0/22
45.121.200.0/24 45.121.200.0/22
45.121.201.0/24 45.121.200.0/22
45.121.203.0/24 45.121.200.0/22
103.15.180.0/24 103.15.180.0/22
103.15.181.0/24 103.15.180.0/22
103.15.183.0/24 103.15.180.0/22
103.15.192.0/24 103.15.192.0/22
103.15.194.0/24 103.15.192.0/22
103.15.195.0/24 103.15.192.0/22
103.15.196.0/24 103.15.196.0/22
103.15.197.0/24 103.15.196.0/22
103.15.199.0/24 103.15.196.0/22
103.19.25.0/24 103.19.24.0/22
103.19.26.0/24 103.19.24.0/22
103.19.27.0/24 103.19.24.0/22
162.247.0.0/24 162.247.0.0/22
162.247.2.0/24 162.247.0.0/22
162.247.3.0/24 162.247.0.0/22
203.90.224.0/24 203.90.224.0/19
203.90.225.0/24 203.90.224.0/19
203.90.226.0/24 203.90.224.0/19
203.90.227.0/24 203.90.224.0/19
203.90.228.0/24 203.90.224.0/19
203.90.229.0/24 203.90.224.0/19
203.90.230.0/24 203.90.224.0/19
203.90.254.0/24 203.90.224.0/19
203.135.128.0/24 203.135.128.0/19
203.135.129.0/24 203.135.128.0/19
203.135.130.0/24 203.135.128.0/19
203.135.131.0/24 203.135.128.0/19
203.135.132.0/24 203.135.128.0/19
203.135.133.0/24 203.135.128.0/19
203.135.134.0/24 203.135.128.0/19
203.135.135.0/24 203.135.128.0/19
203.135.136.0/24 203.135.128.0/19
203.135.137.0/24 203.135.128.0/19
203.135.138.0/24 203.135.128.0/19
203.135.139.0/24 203.135.128.0/19
203.135.140.0/24 203.135.128.0/19
203.135.141.0/24 203.135.128.0/19
203.135.142.0/24 203.135.128.0/19
203.135.143.0/24 203.135.128.0/19
203.135.146.0/24 203.135.128.0/19
203.135.147.0/24 203.135.128.0/19
203.135.148.0/24 203.135.128.0/19
203.135.149.0/24 203.135.128.0/19
203.135.150.0/24 203.135.128.0/19
203.135.151.0/24 203.135.128.0/19
203.135.153.0/24 203.135.128.0/19
203.135.154.0/24 203.135.128.0/19
203.135.155.0/24 203.135.128.0/19
203.135.156.0/24 203.135.128.0/19
203.135.157.0/24 203.135.128.0/19
203.135.158.0/24 203.135.128.0/19
203.135.159.0/24 203.135.128.0/19
whois: 402332
IANA has recorded AS23881 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS23881\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 'AS23854 - AS23944'
as-block: AS23854 - AS23944
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 'AS23881'
% Abuse contact for 'AS23881' is 'report_abuse@udomain.hk'
aut-num: AS23881
as-name: UDOMAIN-AS-AP
descr: UDomain Web Hosting Company Ltd
descr: Hong Kong
country: HK
import: from AS7540 action pref=100; accept ANY
import: from AS2914 action pref=100; accept ANY
export: to AS7540 announce AS23881
export: to AS2914 announce AS23881
export: to AS-ANY announce AS23881
org: ORG-UWHC1-AP
admin-c: UA32-AP
tech-c: UA32-AP
abuse-c: AU97-AP
mnt-lower: MAINT-HK-UDOMAIN
mnt-routes: MAINT-HK-UDOMAIN
mnt-by: APNIC-HM
mnt-irt: IRT-UDOMAIN-HK
last-modified: 2020-06-15T01:32:17Z
source: APNIC
irt: IRT-UDOMAIN-HK
address: 18/F, Kinox Centre, 9 Hung To Road, Hong Kong
address: Hong Kong
e-mail: report_abuse@udomain.hk
abuse-mailbox: report_abuse@udomain.hk
admin-c: UA32-AP
tech-c: UA32-AP
auth: # Filtered
remarks: report_abuse@udomain.hk is invalid
mnt-by: MAINT-HK-UDOMAIN
last-modified: 2026-03-25T13:11:03Z
source: APNIC
organisation: ORG-UWHC1-AP
org-name: UDomain Web Hosting Company Limited
org-type: LIR
country: HK
address: 18/F,
address: Kinox Centre,
address: 9 Hung To Road,
address: Kwun Tong, Kowloon.
phone: +852-2554-7545
fax-no: +852-2554-7900
e-mail: noc@udomain.hk
mnt-ref: APNIC-HM
mnt-by: APNIC-HM
last-modified: 2023-09-05T02:14:57Z
source: APNIC
role: ABUSE UDOMAINHK
country: ZZ
address: 18/F, Kinox Centre, 9 Hung To Road, Hong Kong
address: Hong Kong
phone: +000000000
e-mail: report_abuse@udomain.hk
admin-c: UA32-AP
tech-c: UA32-AP
nic-hdl: AU97-AP
remarks: Generated from irt object IRT-UDOMAIN-HK
remarks: report_abuse@udomain.hk is invalid
abuse-mailbox: report_abuse@udomain.hk
mnt-by: APNIC-ABUSE
last-modified: 2026-03-25T13:12:09Z
source: APNIC
role: UDOMAIN ADMINISTRATORS
address: Unit A - D, 6th Floor, Wing Cheung Industrial Building, No. 109 How Ming Street, Kwun Tong, Kowloon
country: HK
phone: +852 2554 7545
e-mail: noc@udomain.hk
admin-c: UN22-AP
tech-c: UN22-AP
nic-hdl: UA32-AP
mnt-by: MAINT-HK-UDOMAIN
last-modified: 2017-10-16T08:26:03Z
source: APNIC
% This query was served by the APNIC Whois Service version 1.88.36-SNAPSHOT (WHOIS-AU5)