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

% This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See https://docs.db.ripe.net/terms-conditions.html

% Note: this output has been filtered.
%       To receive output for a database update, use the "-B" flag.

% Information related to '195.143.129.128 - 195.143.129.255'

% Abuse contact for '195.143.129.128 - 195.143.129.255' is 'abuse@gtt.net'

inetnum:        195.143.129.128 - 195.143.129.255
netname:        WELLCOME-TRUST-NETS-GTT
descr:          THE WELLCOME TRUST LIMITED
country:        GB
admin-c:        AR44130-RIPE
tech-c:         AR44130-RIPE
status:         ASSIGNED PA
remarks:        In the event of an abuse complaint contact the admin-c or tech-c
mnt-by:         AS3257-NET-MNT
created:        2017-12-06T12:44:22Z
last-modified:  2024-05-21T14:05:41Z
source:         RIPE

person:         Wellcome Network Admin
address:        Wellcome Trust
address:        215 Euston Road
address:        NW1 2BE
address:        London
address:        GB
phone:          +442076118525
nic-hdl:        AR44130-RIPE
mnt-by:         AS3257-PERS-MNT
created:        2017-12-06T12:43:12Z
last-modified:  2024-05-21T14:05:41Z
source:         RIPE # Filtered

% Information related to '195.143.0.0/16AS3257'

route:          195.143.0.0/16
descr:          GTT
origin:         AS3257
mnt-by:         AS3257-ROUTE-MNT
mnt-lower:      AS3257-IPAM-MNT
created:        2019-11-06T11:11:20Z
last-modified:  2025-08-08T14:27:16Z
source:         RIPE

% This query was served by the RIPE Database Query Service version 1.120 (DEXTER)