% 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 '115.160.243.144 - 115.160.243.151'

% Abuse contact for '115.160.243.144 - 115.160.243.151' is 'ip.abuse@tatatel.co.in'

inetnum:        115.160.243.144 - 115.160.243.151
netname:        UT
descr:          UT WORLDWIDE I P LTD - 2
country:        IN
admin-c:        TTLC1-AP
tech-c:         TTLC1-AP
abuse-c:        AT1287-AP
status:         ASSIGNED NON-PORTABLE
mnt-by:         MAINT-IN-TTSLMEIS
mnt-lower:      MAINT-IN-TTSLMEIS
mnt-routes:     MAINT-IN-TTSLMEIS
mnt-irt:        IRT-TTSLMEIS-IN
last-modified:  2021-03-03T13:16:36Z
source:         APNIC

irt:            IRT-TTSLMEIS-IN
address:        TATA TELESERVICES LIMITED
address:        Voltas Premises,
address:        A, E & F Blocks,
address:        Chinchpokli Mumbai
e-mail:         ip.abuse@tatatel.co.in
abuse-mailbox:  ip.abuse@tatatel.co.in
admin-c:        TTLC1-AP
tech-c:         TTLC1-AP
auth:           # Filtered
remarks:        ip.abuse@tatatel.co.in was validated on 2024-07-15
mnt-by:         MAINT-IN-TTSLMEIS
last-modified:  2024-07-15T14:59:07Z
source:         APNIC

role:           ABUSE TTSLMEISIN
address:        TATA TELESERVICES LIMITED
address:        Voltas Premises,
address:        A, E & F Blocks,
address:        Chinchpokli Mumbai
country:        ZZ
phone:          +000000000
e-mail:         ip.abuse@tatatel.co.in
admin-c:        TTLC1-AP
tech-c:         TTLC1-AP
nic-hdl:        AT1287-AP
remarks:        Generated from irt object IRT-TTSLMEIS-IN
remarks:        ip.abuse@tatatel.co.in was validated on 2024-07-15
abuse-mailbox:  ip.abuse@tatatel.co.in
mnt-by:         APNIC-ABUSE
last-modified:  2024-07-15T23:56:41Z
source:         APNIC

role:           TATA TELESERVICES LTD -- CDMA - network administr
address:        D26/2 TTC INDUSTRIAL AREA MIDC SANPADA
country:        IN
phone:          +91 2267438600
fax-no:         +91 22-67438752
e-mail:         karamjeet.singh@tatatel.co.in
admin-c:        KS1338-AP
tech-c:         KS1338-AP
nic-hdl:        TTLC1-AP
mnt-by:         MAINT-TATAINDICOM-IN
last-modified:  2024-04-16T13:58:02Z
source:         APNIC

% Information related to 'VTU1-AP'

person:         Vo Thi Ut
nic-hdl:        VTU1-AP
e-mail:         utvt@hcm.vnn.vn
address:        The People's Council and People's Committee of Long An
address:        61 Nguyen Hue, Tan An, Long An
phone:          +84-72-829154
fax-no:         +84-72-821858
country:        VN
mnt-by:         VNPT
last-modified:  2008-09-04T07:31:32Z
source:         APNIC

% Information related to 'VTU2-AP'

person:         Vo Thi Ut
nic-hdl:        VTU2-AP
e-mail:         utvt@hcm.vnn.vn
address:        Van phong HDND va UBND tinh Long An
phone:          +84-72.829154
fax-no:         +84-72.821858
country:        VN
mnt-by:         MAINT-VN-VNPT
last-modified:  2008-09-04T07:53:57Z
source:         APNIC

% This query was served by the APNIC Whois Service version 1.88.25 (WHOIS-AU1)

Search for
IP address lookups			Miscellaneous queries
-l	1st level less specific		-i	Inverse attributes	None admin-c admin-c,tech-c,zone-c author cross-mnt cross-nfy local-as mbrs-by-ref member-of mnt-by mnt-lower mnt-nfy mnt-routes notify nserver origin person referral-by rev-srv sub-dom tech-c upd-to zone-c
-L	All less specific		-T	Object types	All as-block as-set aut-num domain filter-set inet-rtr inet6num inetnum irt key-cert mntner peering-set person role route route-set rtr-set
-m	1st level more specific
-M	All more specific		Query hints Include "AS" in front of an AS number. Example: AS4808 Include "-t" (template only) or "-v" (template and description) in front of an object name to view the template Example: -t inetnum
-x	Exact match only
-d	Associated reverse domain