% 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 '114.10.144.0 - 114.10.159.255'

% Abuse contact for '114.10.144.0 - 114.10.159.255' is 'hostmaster@ioh.co.id'

inetnum:        114.10.144.0 - 114.10.159.255
netname:        IOH-B2B-ID
descr:          IOH B2B
descr:          INDOSAT's Corporate Customer
descr:          JAKARTA
country:        ID
admin-c:        IH151-AP
tech-c:         IH151-AP
abuse-c:        AI687-AP
status:         ASSIGNED NON-PORTABLE
remarks:        For abuse and spam report please contact abuse@ioh.co.id
mnt-by:         MAINT-ID-INDOSAT-INP
mnt-irt:        IRT-INDOSAT-INP-ID
last-modified:  2023-12-25T01:22:00Z
source:         APNIC

irt:            IRT-INDOSAT-INP-ID
address:        PT Indosat
address:        Jl. Medan Merdeka Barat 21
address:        Jakarta Pusat
e-mail:         hostmaster@ioh.co.id
abuse-mailbox:  hostmaster@ioh.co.id
admin-c:        IH151-AP
tech-c:         IH151-AP
auth:           # Filtered
remarks:        hostmaster@ioh.co.id is
remarks:        hostmaster@ioh.co.id was validated on 2025-02-07
mnt-by:         MAINT-ID-INDOSAT-INP
last-modified:  2025-02-07T08:23:23Z
source:         APNIC

role:           ABUSE INDOSATINPID
country:        ZZ
address:        PT Indosat
address:        Jl. Medan Merdeka Barat 21
address:        Jakarta Pusat
phone:          +000000000
e-mail:         hostmaster@ioh.co.id
admin-c:        IH151-AP
tech-c:         IH151-AP
nic-hdl:        AI687-AP
remarks:        Generated from irt object IRT-INDOSAT-INP-ID
remarks:        hostmaster@ioh.co.id was validated on 2025-02-07
abuse-mailbox:  hostmaster@ioh.co.id
mnt-by:         APNIC-ABUSE
last-modified:  2025-02-07T08:23:55Z
source:         APNIC

person:         INDOSAT INP Hostmaster
nic-hdl:        IH151-AP
e-mail:         hostmaster@ioh.co.id
address:        PT Indosat
address:        Jl. Medan Merdeka Barat 21
address:        Jakarta Pusat
phone:          +62-21-30072088
+               62-8557897897
fax-no:         +62-21-30001073
country:        ID
mnt-by:         MAINT-ID-INDOSAT-INP
last-modified:  2022-07-26T06:54:47Z
source:         APNIC

% Information related to '114.10.149.0/24AS4761'

route:          114.10.149.0/24
origin:         AS4761
descr:          PT. INDOSAT Tbk
                Indosat Head Office
                Jl. Medan Merdeka Barat no. 21
mnt-by:         MAINT-ID-INDOSAT-INP
last-modified:  2020-11-26T14:40:55Z
source:         APNIC

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