% 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://apps.db.ripe.net/docs/HTML-Terms-And-Conditions

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

% Information related to '31.6.16.0 - 31.6.16.255'

% Abuse contact for '31.6.16.0 - 31.6.16.255' is 'abuse@ipxo.com'

inetnum:        31.6.16.0 - 31.6.16.255
netname:        V4GUARD-TUNNEL
country:        US
descr:          v4Guard Tunnel
geofeed:        https://tunnel.v4guard.io/geofeed.csv
org:            ORG-IA2005-RIPE
admin-c:        IMH15-RIPE
tech-c:         IMH15-RIPE
abuse-c:        VA34396-RIPE
status:         SUB-ALLOCATED PA
remarks:        End User Organization
mnt-by:         lir-ch-goldenfrog-1-MNT
mnt-by:         MNT-SUPERNEWS
mnt-by:         PN30323-MNT
mnt-by:         IPXO-MNT
created:        2022-05-24T23:00:28Z
last-modified:  2024-01-10T09:24:26Z
source:         RIPE

organisation:   ORG-IA2005-RIPE
org-name:       Ismael Munoz Hernandez
org-type:       OTHER
address:        C/ Villena, 6, 2C
address:        03690, San Vicente del Raspeig
country:        ES
abuse-c:        ACRO53308-RIPE
mnt-by:         ISMHDEZ-MNT
mnt-ref:        ISMHDEZ-MNT
mnt-ref:        IPXO-MNT
created:        2023-07-01T23:39:15Z
last-modified:  2024-01-07T21:30:44Z
source:         RIPE # Filtered

person:         Ismael Munoz Hernandez
address:        C/ Villena, 6, 2C
address:        03690, San Vicente del Raspeig
address:        ES
phone:          +34 646118260
org:            ORG-IA2005-RIPE
nic-hdl:        IMH15-RIPE
mnt-by:         ISMHDEZ-MNT
created:        2023-07-01T23:25:11Z
last-modified:  2023-07-27T19:08:47Z
source:         RIPE # Filtered

% Information related to '31.6.16.0/24AS215764'

route:          31.6.16.0/24
origin:         AS215764
mnt-by:         IPXO-MNT
created:        2024-01-07T13:25:28Z
last-modified:  2024-01-07T13:25:28Z
source:         RIPE

% This query was served by the RIPE Database Query Service version 1.111 (ABERDEEN)

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