% 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 '116.204.152.0 - 116.204.152.255'

% Abuse contact for '116.204.152.0 - 116.204.152.255' is 'system.eirtel@gmail.com'

inetnum:        116.204.152.0 - 116.204.152.255
netname:        EIRTEL-BD
descr:          EIRTEL Services
country:        BD
org:            ORG-ES2-AP
admin-c:        ESA6-AP
tech-c:         ESA6-AP
abuse-c:        AE204-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-EIRTEL-BD
mnt-routes:     MAINT-EIRTEL-BD
mnt-irt:        IRT-EIRTEL-BD
last-modified:  2025-04-22T20:55:27Z
source:         APNIC

irt:            IRT-EIRTEL-BD
address:        House 14, Road 9, Sector-4, Uttara, Dhaka-1230.
e-mail:         system.eirtel@gmail.com
abuse-mailbox:  system.eirtel@gmail.com
admin-c:        ESA6-AP
tech-c:         ESA6-AP
auth:           # Filtered
remarks:        system.eirtel@gmail.com is invalid
mnt-by:         MAINT-ESL-BD
last-modified:  2025-11-18T00:31:26Z
source:         APNIC

organisation:   ORG-ES2-AP
org-name:       EIRTEL Services
org-type:       LIR
country:        BD
address:        House # 14, Road 09, Sector 04, Uttara,Dhaka
phone:          +8801933394446
e-mail:         info@udayanonlineltd.com
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2023-09-05T02:17:08Z
source:         APNIC

role:           ABUSE EIRTELBD
country:        ZZ
address:        House 14, Road 9, Sector-4, Uttara, Dhaka-1230.
phone:          +000000000
e-mail:         system.eirtel@gmail.com
admin-c:        ESA6-AP
tech-c:         ESA6-AP
nic-hdl:        AE204-AP
remarks:        Generated from irt object IRT-EIRTEL-BD
remarks:        system.eirtel@gmail.com is invalid
abuse-mailbox:  system.eirtel@gmail.com
mnt-by:         APNIC-ABUSE
last-modified:  2025-10-01T13:10:50Z
source:         APNIC

role:           EIRTEL Services administrator
address:        Dhaka, House #14, Road #09, Sector #04, Uttara,Dhaka
country:        BD
phone:          +8801933394441
fax-no:         +8801933394441
e-mail:         support@eirtelservices.com
admin-c:        ESA6-AP
tech-c:         ESA6-AP
nic-hdl:        ESA6-AP
mnt-by:         MAINT-EIRTEL-BD
last-modified:  2019-06-03T06:21:58Z
source:         APNIC

% Information related to '116.204.152.0/24AS149298'

route:          116.204.152.0/24
origin:         AS149298
descr:          Mst. Mufti Ara Begum
                House #14, Road #09, Sector #04, Uttara,Dhaka
mnt-by:         MAINT-UDYAN-BD
last-modified:  2025-03-21T12:38:10Z
country:        BD
source:         APNIC

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