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

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% The objects are in RPSL format.
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% Information related to '131.251.0.0 - 131.251.255.255'

% No abuse contact registered for 131.251.0.0 - 131.251.255.255

inetnum:        131.251.0.0 - 131.251.255.255
netname:        CARDIFF-UNIVERSITY
descr:          Cardiff University
country:        GB
admin-c:        CK10241-RIPE
tech-c:         HG2278-RIPE
status:         LEGACY
remarks:        complaints about spam and other
remarks:        net-abuse to abuse@cardiff.ac.uk
mnt-by:         JANET-HOSTMASTER
mnt-lower:      JANET-HOSTMASTER
mnt-domains:    JANET-HOSTMASTER
mnt-routes:     JANET-HOSTMASTER
created:        1970-01-01T00:00:00Z
last-modified:  2019-12-04T13:11:30Z
source:         RIPE

person:         Chris King
address:        Information Services
address:        Cardiff University
address:        40/41 Park Place
address:        Cardiff
address:        CF10 3BB
address:        United Kingdom
phone:          +44 29 2087 4874
fax-no:         +44 29 2087 4285
nic-hdl:        CK10241-RIPE
created:        1970-01-01T00:00:00Z
last-modified:  2016-04-05T13:59:36Z
mnt-by:         RIPE-NCC-LOCKED-MNT
source:         RIPE # Filtered

person:         Huw Gulliver
address:        Information Services
address:        Cardiff University
address:        40/41 Park Place
address:        Cardiff
address:        CF10 3BB
address:        United Kingdom
phone:          +44 29 2087 4874
fax-no:         +44 29 2087 4285
nic-hdl:        HG2278-RIPE
created:        1970-01-01T00:00:00Z
last-modified:  2020-06-04T10:11:50Z
source:         RIPE # Filtered
mnt-by:         JANET-HOSTMASTER

% Information related to '131.251.0.0/16AS786'

route:          131.251.0.0/16
descr:          Cardiff University
descr:          Information Services
descr:          40/41 Park Place
descr:          Cardiff CF10 3BB
descr:          UNITED KINGDOM
origin:         AS786
mnt-by:         JIPS-NOSC
created:        1970-01-01T00:00:00Z
last-modified:  2012-11-09T12:06:47Z
source:         RIPE

% This query was served by the RIPE Database Query Service version 1.116 (ABERDEEN)