% 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 '103.136.236.0 - 103.136.239.255'

% Abuse contact for '103.136.236.0 - 103.136.239.255' is 'rossel0203113@just.edu.bd'

inetnum:        103.136.236.0 - 103.136.239.255
netname:        JUST-BD
descr:          Jessore University of Science and Technology
country:        BD
org:            ORG-JUOS1-AP
admin-c:        JUOS1-AP
tech-c:         JUOS1-AP
abuse-c:        AJ466-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-JUST-BD
mnt-routes:     MAINT-JUST-BD
mnt-irt:        IRT-JUST-BD
last-modified:  2020-09-16T03:35:41Z
source:         APNIC

irt:            IRT-JUST-BD
address:        Jessore University of Science and Technology (JUST), Jessore ?????? 7408, Jessore Jessore 7408
e-mail:         rossel0203113@just.edu.bd
abuse-mailbox:  rossel0203113@just.edu.bd
admin-c:        JUOS1-AP
tech-c:         JUOS1-AP
auth:           # Filtered
remarks:        rossel0203113@just.edu.bd was validated on 2025-08-09
mnt-by:         MAINT-JUST-BD
last-modified:  2025-11-18T00:32:57Z
source:         APNIC

organisation:   ORG-JUOS1-AP
org-name:       Jessore University of Science and Technology
org-type:       LIR
country:        BD
address:        Jessore University of Science and Technology (JUST)
phone:          +880-421-61097
fax-no:         +880421-61199
e-mail:         rossel0203113@just.edu.bd
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:17:44Z
source:         APNIC

role:           ABUSE JUSTBD
country:        ZZ
address:        Jessore University of Science and Technology (JUST), Jessore ?????? 7408, Jessore Jessore 7408
phone:          +000000000
e-mail:         rossel0203113@just.edu.bd
admin-c:        JUOS1-AP
tech-c:         JUOS1-AP
nic-hdl:        AJ466-AP
remarks:        Generated from irt object IRT-JUST-BD
remarks:        rossel0203113@just.edu.bd was validated on 2025-08-09
abuse-mailbox:  rossel0203113@just.edu.bd
mnt-by:         APNIC-ABUSE
last-modified:  2025-08-09T05:30:30Z
source:         APNIC

role:           Jessore University of Science and Technology admin
address:        Jessore University of Science and Technology (JUST), Jessore – 7408, Jessore Jessore 7408
country:        BD
phone:          +880-421-61097
fax-no:         +880421-61199
e-mail:         rossel0203113@just.edu.bd
admin-c:        JUOS1-AP
tech-c:         JUOS1-AP
nic-hdl:        JUOS1-AP
mnt-by:         MAINT-JUST-BD
last-modified:  2019-03-14T00:32:17Z
source:         APNIC

% Information related to '103.136.236.0/24AS138904'

route:          103.136.236.0/24
origin:         AS138904
descr:          Jessore University of Science and Technology
                Jessore University of Science and Technology (JUST)
mnt-by:         MAINT-JUST-BD
last-modified:  2020-01-05T04:52:14Z
source:         APNIC

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