% APNIC found the following authoritative answer from: whois.apnic.net

% [whois.apnic.net]
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% Information related to '210.23.0.0 - 210.23.31.255'

% Abuse contact for '210.23.0.0 - 210.23.31.255' is 'abuse@symbionetworks.com'

inetnum:        210.23.0.0 - 210.23.31.255
netname:        SUPERINTERNET
descr:          SuperInternet ACCESS Pte Ltd, Licenced Facilities Based Operator (FBO), Singapore.
descr:          Singapore.
country:        SG
org:            ORG-SAPL9-AP
admin-c:        JX2278-AP
tech-c:         SS341-AP
abuse-c:        AS2205-AP
status:         ALLOCATED PORTABLE
mnt-by:         APNIC-HM
mnt-lower:      MAINT-SG-SUPERINTERNET
mnt-routes:     MAINT-SG-SUPERINTERNET
mnt-irt:        IRT-SUPER-SG
last-modified:  2022-06-30T13:43:49Z
source:         APNIC

irt:            IRT-SUPER-SG
address:        2 International Business Park
address:        Unit 09-09 Tower 1 The Strategy
address:        Singapore 609930
address:        Singapore
e-mail:         abuse@symbionetworks.com
abuse-mailbox:  abuse@symbionetworks.com
admin-c:        SS341-AP
tech-c:         SS341-AP
auth:           # Filtered
remarks:        abuse@symbionetworks.com was validated on 2026-06-17
mnt-by:         MAINT-SG-SUPERINTERNET
last-modified:  2026-06-17T22:43:10Z
source:         APNIC

organisation:   ORG-SAPL9-AP
org-name:       SuperInternet Access Pte Ltd
org-type:       LIR
country:        SG
address:        2 International Business Park
address:        # 09-09 Tower 1
address:        The Strategy
phone:          +65-6964-1335
e-mail:         info@super.net.sg
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:14:50Z
source:         APNIC

role:           ABUSE SUPERSG
country:        ZZ
address:        2 International Business Park
address:        Unit 09-09 Tower 1 The Strategy
address:        Singapore 609930
address:        Singapore
phone:          +000000000
e-mail:         abuse@symbionetworks.com
admin-c:        SS341-AP
tech-c:         SS341-AP
nic-hdl:        AS2205-AP
remarks:        Generated from irt object IRT-SUPER-SG
remarks:        abuse@symbionetworks.com was validated on 2026-06-17
abuse-mailbox:  abuse@symbionetworks.com
mnt-by:         APNIC-ABUSE
last-modified:  2026-06-17T22:43:45Z
source:         APNIC

person:         Jourdan Xie
address:        2 International Business Park The Strategy Tower 1 #09-09 S609930
country:        SG
phone:          +6569641333
e-mail:         jourdan.xie@super.net.sg
nic-hdl:        JX2278-AP
mnt-by:         MAINT-SG-SUPERINTERNET
last-modified:  2022-06-30T13:40:51Z
source:         APNIC

person:         SuperInternet-SG Hostmaster
address:        2 International Business Park
address:        Unit 09-09 Tower 1 The Strategy
address:        Singapore 609930
country:        SG
phone:          +6569641333
e-mail:         noc@super.net.sg
nic-hdl:        SS341-AP
mnt-by:         MAINT-SG-SUPERINTERNET
last-modified:  2022-06-30T14:00:13Z
source:         APNIC

% Information related to '210.23.0.0/20AS4844'

route:          210.23.0.0/20
descr:          SuperInternet (Singapore) Pte Ltd Primay netblock
country:        SG
origin:         AS4844
remarks:        Looking Glass available at http://www.super.net.sg
notify:         benjamin.tan@super.net.sg
mnt-lower:      MAINT-SG-SUPERINTERNET
mnt-routes:     MAINT-SG-SUPERINTERNET
mnt-by:         MAINT-SG-SUPERINTERNET
last-modified:  2008-09-04T07:54:28Z
source:         APNIC

% This query was served by the APNIC Whois Service version 1.88.48 (WHOIS-AU4)