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

% [whois.apnic.net]
% Whois data copyright terms    http://www.apnic.net/db/dbcopyright.html

% Information related to '138.75.128.0 - 138.75.255.255'

% Abuse contact for '138.75.128.0 - 138.75.255.255' is 'abuse@m1.com.sg'

inetnum:        138.75.128.0 - 138.75.255.255
netname:        M1LIMITED-SG
descr:          M1 LIMITED
descr:          10 International Business Park
country:        SG
org:            ORG-ML7-AP
admin-c:        MLA18-AP
tech-c:         MLA18-AP
abuse-c:        AS2665-AP
status:         ALLOCATED PORTABLE
remarks:        --------------------------------------------------------
remarks:        To report network abuse, please contact mnt-irt
remarks:        For troubleshooting, please contact tech-c and admin-c
remarks:        Report invalid contact via www.apnic.net/invalidcontact
remarks:        --------------------------------------------------------
mnt-by:         APNIC-HM
mnt-lower:      MAINT-SG-M1LIMITED
mnt-routes:     MAINT-SG-M1LIMITED
mnt-irt:        IRT-SG-M1LIMITED
last-modified:  2020-07-29T13:14:11Z
source:         APNIC

irt:            IRT-SG-M1LIMITED
address:        10 International Business Park
phone:          +65 66551111
fax-no:         +65 66551959
e-mail:         peering@m1.com.sg
abuse-mailbox:  abuse@m1.com.sg
admin-c:        MLA18-AP
tech-c:         MLA18-AP
auth:           # Filtered
remarks:        peering@m1.com.sg was validated on 2025-10-09
remarks:        abuse@m1.com.sg was validated on 2025-10-21
mnt-by:         MAINT-SG-M1LIMITED
last-modified:  2025-11-18T00:30:38Z
source:         APNIC

organisation:   ORG-ML7-AP
org-name:       M1 LIMITED
org-type:       LIR
country:        SG
address:        10 International Business Park
phone:          +65-66551111
fax-no:         +65-66551959
e-mail:         hanyy@m1.com.sg
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:14:58Z
source:         APNIC

role:           ABUSE SGM1LIMITED
country:        ZZ
address:        10 International Business Park
phone:          +65 66551111
e-mail:         peering@m1.com.sg
admin-c:        MLA18-AP
tech-c:         MLA18-AP
nic-hdl:        AS2665-AP
remarks:        Generated from irt object IRT-SG-M1LIMITED
remarks:        peering@m1.com.sg was validated on 2025-10-09
remarks:        abuse@m1.com.sg was validated on 2025-10-21
abuse-mailbox:  abuse@m1.com.sg
mnt-by:         APNIC-ABUSE
last-modified:  2025-10-21T04:30:35Z
source:         APNIC

role:           M1 LIMITED administrator
address:        10 International Business Park
country:        SG
phone:          +65 66551111
fax-no:         +65 66551959
e-mail:         hostmaster@m1.com.sg
admin-c:        PRHS1-AP
tech-c:         LZ4052-AP
nic-hdl:        MLA18-AP
mnt-by:         MAINT-SG-M1LIMITED
last-modified:  2025-03-13T06:41:18Z
source:         APNIC

% Information related to '138.75.246.0/24AS4773'

route:          138.75.246.0/24
descr:          M1 Limited
                Internet Service Provider
                10 International Business Park,
                Singapore 609928
origin:         AS4773
mnt-by:         MAINT-AP-MOBILEONE-SG
last-modified:  2021-07-14T09:44:15Z
source:         APNIC

% This query was served by the APNIC Whois Service version 1.88.34 (WHOIS-AU4)