% 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 '83.137.25.128 - 83.137.25.255'

% Abuse contact for '83.137.25.128 - 83.137.25.255' is 'abuse@northcdatacenters.ch'

inetnum:        83.137.25.128 - 83.137.25.255
netname:        EBMTELECOM-NET-25-128
descr:          EBM Telecom AG, Link Subnets
country:        CH
admin-c:        ET1619-RIPE
tech-c:         ET1619-RIPE
status:         ASSIGNED PA
mnt-by:         EBMTELECOM-MNT
mnt-lower:      EBMTELECOM-MNT
mnt-routes:     EBMTELECOM-MNT
created:        2007-11-01T09:16:47Z
last-modified:  2007-11-01T09:16:47Z
source:         RIPE

role:           NOC NorthC Schweiz
address:        NorthC Schweiz AG
address:        Aliothstrasse 4
address:        CH-4142 Muenchenstein
address:        Switzerland
remarks:        ==========================================================
abuse-mailbox:  abuse@northcdatacenters.ch
remarks:        Spam and abuse issues : abuse@northcdatacenters.ch
remarks:        ----------------------------------------------------------
remarks:        If you think we try to hack or spam you,
remarks:        please read this : http://www.ripe.net/nicdb.html
remarks:        ==========================================================
phone:          +41 61 577 77 77
fax-no:         +41 61 577 77 78
admin-c:        TP5334-RIPE
tech-c:         TP5334-RIPE
nic-hdl:        ET1619-RIPE
mnt-by:         EBMTELECOM-MNT
created:        2007-02-05T15:15:07Z
last-modified:  2024-05-14T12:43:15Z
source:         RIPE # Filtered

% Information related to '83.137.25.0/24AS42346'

route:          83.137.25.0/24
origin:         AS42346
mnt-by:         EBMTELECOM-MNT
created:        2022-03-29T14:56:28Z
last-modified:  2022-03-29T14:56:28Z
source:         RIPE

% This query was served by the RIPE Database Query Service version 1.114 (DEXTER)

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