% 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 '45.251.228.0 - 45.251.231.255'

% Abuse contact for '45.251.228.0 - 45.251.231.255' is 'abuse@ksnetworkbd.com'

inetnum:        45.251.228.0 - 45.251.231.255
netname:        KS-BD
descr:          Nazmul Karim Bhuiyan t/a KS Network
descr:          129/130 Gasul Azam Super Market
descr:          Nilkhet, Dhaka
country:        BD
org:            ORG-KN3-AP
admin-c:        KNA14-AP
tech-c:         KNA14-AP
abuse-c:        AK1158-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-KS-BD
mnt-routes:     MAINT-KS-BD
mnt-irt:        IRT-KS-BD
last-modified:  2020-07-07T05:22:44Z
source:         APNIC

irt:            IRT-KS-BD
address:        129/130 Gasul Azam Super Market, Nilkhet, Dhaka, Dhaka Dhaka 1205
e-mail:         abuse@ksnetworkbd.com
abuse-mailbox:  abuse@ksnetworkbd.com
admin-c:        KNA14-AP
tech-c:         KNA14-AP
auth:           # Filtered
remarks:        abuse@ksnetworkbd.com was validated on 2025-10-17
mnt-by:         MAINT-KS-BD
last-modified:  2025-11-18T00:30:53Z
source:         APNIC

organisation:   ORG-KN3-AP
org-name:       KS Network
org-type:       LIR
country:        BD
address:        129/130 Gasul Azam Super Market
address:        Nilkhet, Dhaka
phone:          +88-02-9676975
e-mail:         abuse@ks.com.bd
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:16:55Z
source:         APNIC

role:           ABUSE KSBD
country:        ZZ
address:        129/130 Gasul Azam Super Market, Nilkhet, Dhaka, Dhaka Dhaka 1205
phone:          +000000000
e-mail:         abuse@ksnetworkbd.com
admin-c:        KNA14-AP
tech-c:         KNA14-AP
nic-hdl:        AK1158-AP
remarks:        Generated from irt object IRT-KS-BD
remarks:        abuse@ksnetworkbd.com was validated on 2025-10-17
abuse-mailbox:  abuse@ksnetworkbd.com
mnt-by:         APNIC-ABUSE
last-modified:  2025-10-17T12:00:25Z
source:         APNIC

role:           KS Network administrator
address:        129/130 Gasul Azam Super Market, Nilkhet, Dhaka, Dhaka Dhaka 1205
country:        BD
phone:          +88-02-9676975
fax-no:         +88-02-9676975
e-mail:         abuse@ks.com.bd
admin-c:        KNA14-AP
tech-c:         KNA14-AP
nic-hdl:        KNA14-AP
mnt-by:         MAINT-KS-BD
last-modified:  2016-05-27T18:32:54Z
source:         APNIC

% Information related to '45.251.231.0/24AS59362'

route:          45.251.231.0/24
origin:         AS59362
descr:          Nazmul Karim Bhuiyan
                129/130 Gasul Azam Super Market
                Nilkhet, Dhaka
mnt-by:         MAINT-KS-BD
last-modified:  2017-12-20T11:44:01Z
source:         APNIC

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