% 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 '203.131.176.96 - 203.131.176.103'

% Abuse contact for '203.131.176.96 - 203.131.176.103' is 'abuse@vitrodc.com'

inetnum:        203.131.176.96 - 203.131.176.103
netname:        WCECILIO-PH
descr:          Wilfredo Cecilio
descr:          2F Dona Anita Bldg 66 Session Road
descr:          Baguio BAGUIO
country:        PH
admin-c:        WC624-AP
tech-c:         WC624-AP
abuse-c:        AE135-AP
status:         ASSIGNED NON-PORTABLE
mnt-by:         MAINT-PH-EPLDT
mnt-irt:        IRT-EPLDT-PH
last-modified:  2021-06-30T02:49:21Z
source:         APNIC

irt:            IRT-EPLDT-PH
address:        PLDT Building , Pasig City
e-mail:         nim@vitrodc.com
abuse-mailbox:  abuse@vitrodc.com
admin-c:        RM52-AP
tech-c:         PR143-AP
auth:           # Filtered
remarks:        nim@vitrodc.com was validated on 2026-02-11
remarks:        abuse@vitrodc.com was validated on 2026-04-29
mnt-by:         MAINT-PH-EPLDT
last-modified:  2026-05-28T06:42:01Z
source:         APNIC

role:           ABUSE EPLDTPH
country:        ZZ
address:        PLDT Building , Pasig City
phone:          +000000000
e-mail:         nim@vitrodc.com
admin-c:        RM52-AP
tech-c:         PR143-AP
nic-hdl:        AE135-AP
remarks:        Generated from irt object IRT-EPLDT-PH
remarks:        nim@vitrodc.com was validated on 2026-02-11
remarks:        abuse@vitrodc.com was validated on 2026-04-29
abuse-mailbox:  abuse@vitrodc.com
mnt-by:         APNIC-ABUSE
last-modified:  2026-04-29T14:22:02Z
source:         APNIC

person:         Wilfredo Cecilio
nic-hdl:        WC624-AP
e-mail:         avdavid@pldt.com.ph
address:        2F Dona Anita Bldg 66 Session Road
address:        Baguio BAGUIO
phone:          +63-74-619-1117
country:        PH
mnt-by:         MAINT-PH-EPLDT
last-modified:  2011-10-03T08:44:50Z
source:         APNIC

% Information related to '203.131.176.0/22AS7629'

route:          203.131.176.0/22
origin:         AS7629
descr:          VITRO Inc.
                5F L. V Locsin Bldg.  Ayala Avenue
                corner Makati Avenue
mnt-by:         MAINT-PH-EPLDT
last-modified:  2026-03-23T11:48:25Z
source:         APNIC

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