% APNIC found the following authoritative answer from: whois.apnic.net

% [whois.apnic.net]
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% Information related to '150.107.212.0 - 150.107.215.255'

% Abuse contact for '150.107.212.0 - 150.107.215.255' is 'support@alliancekolkata.com'

inetnum:        150.107.212.0 - 150.107.215.255
netname:        ALLIANCEBROADBAND-IN
descr:          Alliance Broadband Services Pvt. Ltd.
admin-c:        SA654-AP
tech-c:         SA654-AP
country:        IN
mnt-by:         MAINT-IN-IRINN
mnt-irt:        IRT-ALLIANCEBROADBAND-IN
mnt-routes:     MAINT-IN-ABSPL
status:         ALLOCATED PORTABLE
last-modified:  2022-03-22T12:35:36Z
source:         APNIC

irt:            IRT-ALLIANCEBROADBAND-IN
address:        P-89 CIT Road
address:        Kolkata - 700014, India
e-mail:         support@alliancekolkata.com
abuse-mailbox:  support@alliancekolkata.com
admin-c:        DM254-AP
tech-c:         DM254-AP
auth:           # Filtered
remarks:        support@alliancekolkata.com is invalid
mnt-by:         MAINT-IN-TAMANNA
last-modified:  2019-11-27T14:24:53Z
source:         APNIC

person:         Sk Akramul Alam
nic-hdl:        SA654-AP
e-mail:         ipadmin@alliancekolkata.com
address:        P-89 C.I.T Road
address:        2nd Floor,
address:        Kolkata - 700014, India
phone:          +91-33-39837800
fax-no:         +91-33-39829588
country:        IN
mnt-by:         MAINT-IN-ABSPL
last-modified:  2017-05-22T03:10:57Z
source:         APNIC

% Information related to '150.107.215.0/24AS23860'

route:          150.107.215.0/24
descr:          Alliance Broadband Services Pvt. Ltd.
mnt-by:         MAINT-IN-ABSPL
mnt-routes:     MAINT-IN-ABSPL
origin:         AS23860
last-modified:  2020-07-05T02:19:51Z
source:         APNIC

% This query was served by the APNIC Whois Service version 1.88.25 (WHOIS-AU3)

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