% 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 '103.78.226.0 - 103.78.226.255'

% Abuse contact for '103.78.226.0 - 103.78.226.255' is 'kashem@sparknetbd.com'

inetnum:        103.78.226.0 - 103.78.226.255
netname:        STARDUST-BD
descr:          Stardust Telecom Ltd.
country:        BD
admin-c:        STLA18-AP
tech-c:         STLA18-AP
abuse-c:        AS2972-AP
status:         ALLOCATED NON-PORTABLE
mnt-by:         MAINT-SPARKNET-BD
mnt-irt:        IRT-SPARKNET-BD
last-modified:  2025-09-03T17:13:39Z
source:         APNIC

irt:            IRT-SPARKNET-BD
address:        474 Kazipara, Mirpur, Dhaka-1216, Dhaka Dhaka 1216
e-mail:         kashem@sparknetbd.com
abuse-mailbox:  kashem@sparknetbd.com
admin-c:        SNA61-AP
tech-c:         SNA61-AP
auth:           # Filtered
remarks:        kashem@sparknetbd.com was validated on 2025-12-09
mnt-by:         MAINT-SPARKNET-BD
last-modified:  2025-12-09T10:37:22Z
source:         APNIC

role:           ABUSE SPARKNETBD
country:        ZZ
address:        474 Kazipara, Mirpur, Dhaka-1216, Dhaka Dhaka 1216
phone:          +000000000
e-mail:         kashem@sparknetbd.com
admin-c:        SNA61-AP
tech-c:         SNA61-AP
nic-hdl:        AS2972-AP
remarks:        Generated from irt object IRT-SPARKNET-BD
remarks:        kashem@sparknetbd.com was validated on 2025-12-09
abuse-mailbox:  kashem@sparknetbd.com
mnt-by:         APNIC-ABUSE
last-modified:  2025-12-09T10:37:43Z
source:         APNIC

role:           Startrek Telecom Ltd administrator
address:        Awal Center 17th Floor, 34 Kamal Ataturk Avenue, Banani,Dh, Dhaka Dhaka 1213
country:        BD
phone:          +88029820310
fax-no:         +88029820312
e-mail:         apnicabuse.mime@cg-bd.com
admin-c:        STLA18-AP
tech-c:         STLA18-AP
nic-hdl:        STLA18-AP
mnt-by:         MAINT-STARTREK-BD
last-modified:  2023-11-23T09:31:55Z
source:         APNIC

% Information related to '103.78.226.0/24AS135881'

route:          103.78.226.0/24
descr:          Spark Net
origin:         AS135881
mnt-by:         MAINT-SPARKNET-BD
last-modified:  2016-11-14T06:12:06Z
source:         APNIC

% Information related to '103.78.226.0/24AS137967'

route:          103.78.226.0/24
origin:         AS137967
descr:          Stardust Telecom Ltd.
mnt-by:         MAINT-SPARKNET-BD
last-modified:  2025-02-16T11:30:08Z
source:         APNIC

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