% 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 '103.133.200.0 - 103.133.203.255'

% Abuse contact for '103.133.200.0 - 103.133.203.255' is 'abuse@antaranga.net'

inetnum:        103.133.200.0 - 103.133.203.255
netname:        ANTARANGANETWORKS-BD
descr:          Antaranga Networks
country:        BD
org:            ORG-AN8-AP
admin-c:        ANA57-AP
tech-c:         ANA57-AP
abuse-c:        AA1883-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-ANTARANGANETWORKS-BD
mnt-routes:     MAINT-ANTARANGANETWORKS-BD
mnt-irt:        IRT-ANTARANGANETWORKS-BD
last-modified:  2020-07-22T13:14:28Z
source:         APNIC

irt:            IRT-ANTARANGANETWORKS-BD
address:        Abdurpara Majar Gate,, Antaranga Tower,, Halishahor South Kattoli,, Halishahor, Chattogram Chattogra
e-mail:         abuse@antaranga.net
abuse-mailbox:  abuse@antaranga.net
admin-c:        ANA57-AP
tech-c:         ANA57-AP
auth:           # Filtered
remarks:        abuse@antaranga.net is invalid
mnt-by:         MAINT-ANTARANGANETWORKS-BD
last-modified:  2025-11-18T00:32:51Z
source:         APNIC

organisation:   ORG-AN8-AP
org-name:       Antaranga Networks
org-type:       LIR
country:        BD
address:        Abdurpara Majar Gate,
address:        Antaranga Tower,
address:        Halishahor South Kattoli,, Halishahor
phone:          +8801944111133
e-mail:         mintu@antaranga.net
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:17:42Z
source:         APNIC

role:           ABUSE ANTARANGANETWORKSBD
country:        ZZ
address:        Abdurpara Majar Gate,, Antaranga Tower,, Halishahor South Kattoli,, Halishahor, Chattogram Chattogra
phone:          +000000000
e-mail:         abuse@antaranga.net
admin-c:        ANA57-AP
tech-c:         ANA57-AP
nic-hdl:        AA1883-AP
remarks:        Generated from irt object IRT-ANTARANGANETWORKS-BD
remarks:        abuse@antaranga.net is invalid
abuse-mailbox:  abuse@antaranga.net
mnt-by:         APNIC-ABUSE
last-modified:  2025-09-04T21:22:59Z
source:         APNIC

role:           Antaranga Networks administrator
address:        Abdurpara Majar Gate,, Antaranga Tower,, Halishahor South Kattoli,, Halishahor, Chattogram Chattogra
country:        BD
phone:          +8801944111133
e-mail:         abuse@antaranga.net
admin-c:        ANA57-AP
tech-c:         ANA57-AP
nic-hdl:        ANA57-AP
mnt-by:         MAINT-ANTARANGANETWORKS-BD
last-modified:  2019-01-30T03:35:13Z
source:         APNIC

% Information related to '103.133.203.0/24AS132298'

route:          103.133.203.0/24
origin:         AS132298
descr:          Md. Aktaruzzaman
                Abdurpara Majar Gate,
                Antaranga Tower,
                Halishahor South Kattoli,, Halishahor
mnt-by:         MAINT-ANTARANGANETWORKS-BD
last-modified:  2020-06-08T11:33:04Z
source:         APNIC

% Information related to '103.133.203.0/24AS138584'

route:          103.133.203.0/24
origin:         AS138584
descr:          Md. Aktaruzzaman
                Abdurpara Majar Gate,
                Antaranga Tower,
                Halishahor South Kattoli,, Halishahor
mnt-by:         MAINT-ANTARANGANETWORKS-BD
last-modified:  2021-07-14T05:57:13Z
source:         APNIC

% This query was served by the APNIC Whois Service version 1.88.36-SNAPSHOT (WHOIS-AU5)