% 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 '43.250.240.0 - 43.250.243.255'

% Abuse contact for '43.250.240.0 - 43.250.243.255' is 'abusereport@mobitel.lk'

inetnum:        43.250.240.0 - 43.250.243.255
netname:        MOBITEL-LK
descr:          Mobitel Pvt Ltd
country:        LK
org:            ORG-MPL1-AP
admin-c:        NA1130-AP
tech-c:         NA1130-AP
abuse-c:        AM2587-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-MOBITEL-LK
mnt-routes:     MAINT-MOBITEL-LK
mnt-irt:        IRT-MOBITEL-LK
last-modified:  2026-03-10T11:59:06Z
source:         APNIC

irt:            IRT-MOBITEL-LK
address:        IS Group, Mobitel (pvt) Ltd
address:        108, W A D Ramanayake Mawatha,
address:        Colombo 02,
address:        Sri Lanka.
e-mail:         abusereport@mobitel.lk
abuse-mailbox:  abusereport@mobitel.lk
admin-c:        NA1130-AP
tech-c:         NA1130-AP
auth:           # Filtered
remarks:        abusereport@mobitel.lk was validated on 2025-12-23
mnt-by:         MAINT-MOBITEL-LK
last-modified:  2026-03-10T11:59:08Z
source:         APNIC

organisation:   ORG-MPL1-AP
org-name:       Mobitel Pvt Ltd
org-type:       LIR
country:        LK
address:        Mobitel Pvt Ltd, No.148/15, Lesley Ranagala Mawatha
address:        Baseline Road, Colombo 08
address:        Sri Lanka
phone:          +94-712719968
fax-no:         +94-11-4713558
e-mail:         netinfo@mobitel.lk
mnt-ref:        APNIC-HM
mnt-by:         APNIC-HM
last-modified:  2025-10-23T12:55:51Z
source:         APNIC

role:           ABUSE MOBITELLK
country:        ZZ
address:        IS Group, Mobitel (pvt) Ltd
address:        108, W A D Ramanayake Mawatha,
address:        Colombo 02,
address:        Sri Lanka.
phone:          +000000000
e-mail:         abusereport@mobitel.lk
admin-c:        NA1130-AP
tech-c:         NA1130-AP
nic-hdl:        AM2587-AP
remarks:        Generated from irt object IRT-MOBITEL-LK
remarks:        abusereport@mobitel.lk was validated on 2025-12-23
abuse-mailbox:  abusereport@mobitel.lk
mnt-by:         APNIC-ABUSE
last-modified:  2026-03-10T11:59:33Z
source:         APNIC

role:           Network Admin
address:        No. 148/15, Lesley Ranagala Mawatha, Baseline Road, Colombo 08. Sri Lanka
country:        LK
phone:          +94 71 2719968
e-mail:         netinfo@mobitel.lk
admin-c:        NA1130-AP
tech-c:         NA1130-AP
nic-hdl:        NA1130-AP
notify:         netinfo@mobitel.lk
mnt-by:         MAINT-MOBITEL-LK
last-modified:  2026-03-10T11:54:13Z
source:         APNIC

% Information related to '43.250.243.0/24AS45356'

route:          43.250.243.0/24
origin:         AS45356
descr:          Mobitel Pvt Ltd
                IS Group, No:108, W A D Ramanayake Mawatha,
mnt-by:         MAINT-MOBITEL-LK
last-modified:  2019-10-04T09:21:39Z
source:         APNIC

% This query was served by the APNIC Whois Service version 1.88.48 (WHOIS-AU4)