% 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 '119.10.172.0 - 119.10.175.255'

% Abuse contact for '119.10.172.0 - 119.10.175.255' is 'mailadmin@colbd.com'

inetnum:        119.10.172.0 - 119.10.175.255
netname:        CTGONLINE-BD
descr:          Chittagong Online Limited.
country:        BD
org:            ORG-COL2-AP
admin-c:        TA129-AP
admin-c:        AB248-AP
tech-c:         AB248-AP
abuse-c:        AC1804-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-BD-CTGONLINE
mnt-routes:     MAINT-BD-CTGONLINE
mnt-irt:        IRT-CTGONLINE-BD
last-modified:  2020-06-22T05:41:19Z
source:         APNIC

irt:            IRT-CTGONLINE-BD
address:        Chittagong Online Limited.
address:        IIUC Tower (14th Floor),
address:        1700/A, Plot-9, Sk. Mujib Road, Agrabad C/A,
address:        Chittagong-4100,
address:        Bangladesh.
e-mail:         irt@colbd.com
abuse-mailbox:  mailadmin@colbd.com
admin-c:        TA129-AP
admin-c:        AB248-AP
tech-c:         AB248-AP
auth:           # Filtered
remarks:        Timezone GMT+6
remarks:        mailadmin@colbd.com was validated on 2026-04-08
remarks:        irt@colbd.com was validated on 2026-08-05
irt-nfy:        cto@colbd.com
mnt-by:         MAINT-BD-CTGONLINE
last-modified:  2026-08-05T03:54:49Z
source:         APNIC

organisation:   ORG-COL2-AP
org-name:       Chittagong Online Limited.
org-type:       LIR
country:        BD
address:        Chittagong Online Limited.
address:        IIUC Tower (14th Floor),
address:        1700/A, Plot-9, Sk. Mujib Road,
address:        Agrabad C/A,
phone:          +880-23333-14447
fax-no:         +880-31-718186
e-mail:         irt@colbd.com
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:15:09Z
source:         APNIC

role:           ABUSE CTGONLINEBD
country:        ZZ
address:        Chittagong Online Limited.
address:        IIUC Tower (14th Floor),
address:        1700/A, Plot-9, Sk. Mujib Road, Agrabad C/A,
address:        Chittagong-4100,
address:        Bangladesh.
phone:          +000000000
e-mail:         irt@colbd.com
admin-c:        TA129-AP
admin-c:        AB248-AP
tech-c:         AB248-AP
nic-hdl:        AC1804-AP
remarks:        Generated from irt object IRT-CTGONLINE-BD
remarks:        mailadmin@colbd.com was validated on 2026-04-08
remarks:        irt@colbd.com was validated on 2026-08-05
abuse-mailbox:  mailadmin@colbd.com
mnt-by:         APNIC-ABUSE
last-modified:  2026-08-05T03:54:54Z
source:         APNIC

person:         Aniruddha Barua
nic-hdl:        AB248-AP
abuse-mailbox:  mailadmin@colbd.com
e-mail:         cto@colbd.com
address:        Chittagong Online Limited.
address:        IIUC Tower (14th Floor),
address:        1700/A, Plot-9, Sk. Mujib Road, Agrabad C/A,
address:        Chittagong-4100,
address:        Bangladesh.
phone:          +880-23333-14447
phone:          +880-23333-17437
country:        BD
mnt-by:         MAINT-BD-CTGONLINE
last-modified:  2022-02-22T07:27:52Z
source:         APNIC

person:         Tahmid Anwar
nic-hdl:        TA129-AP
abuse-mailbox:  mailadmin@colbd.com
e-mail:         ceo@colbd.com
address:        Chittagong Online Limited.
address:        IIUC Tower (14th Floor),
address:        1700/A, Plot-9, Sk. Mujib Road, Agrabad C/A,
address:        Chittagong-4100,
address:        Bangladesh.
phone:          +880-23333-14447
phone:          +880-23333-17437
country:        BD
mnt-by:         MAINT-BD-CTGONLINE
last-modified:  2022-02-22T07:28:35Z
source:         APNIC

% Information related to '119.10.175.0/24AS38592'

route:          119.10.175.0/24
descr:          CTGONLINENET Route Object
origin:         AS38592
mnt-by:         MAINT-BD-CTGONLINE
country:        BD
notify:         cto@colbd.com
last-modified:  2014-12-24T11:12:54Z
source:         APNIC

% This query was served by the APNIC Whois Service version 1.88.48 (WHOIS-AU5)