% 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 '91.138.64.0 - 91.138.127.255'

% Abuse contact for '91.138.64.0 - 91.138.127.255' is 'abuse@qlgroup.ch'

inetnum:        91.138.64.0 - 91.138.127.255
netname:        CH-TBS-20061011
country:        CH
org:            ORG-TBS2-RIPE
admin-c:        JS6657-RIPE
tech-c:         TBS14-RIPE
status:         ALLOCATED PA
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         CH-LAN-MNT
mnt-lower:      TBSUHR-MNT
mnt-lower:      CH-LAN-MNT
mnt-routes:     TBSUHR-MNT
mnt-domains:    TBSUHR-MNT
created:        2016-04-22T10:38:14Z
last-modified:  2023-10-20T08:37:45Z
source:         RIPE # Filtered

organisation:   ORG-TBS2-RIPE
org-name:       TBS Strom AG
country:        CH
org-type:       LIR
address:        MUEHLEWEG 1
address:        5034
address:        SUHR
address:        SWITZERLAND
phone:          +41628555757
fax-no:         +41628555750
abuse-c:        LSAN1-RIPE
admin-c:        SB24164-RIPE
admin-c:        JS6657-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        CH-LAN-MNT
mnt-ref:        TBSUHR-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         CH-LAN-MNT
created:        2006-08-21T10:11:10Z
last-modified:  2023-11-23T13:21:40Z
source:         RIPE # Filtered

role:           TBSUHR NOC
admin-c:        NW2173-RIPE
admin-c:        JS6657-RIPE
admin-c:        SB24164-RIPE
tech-c:         SB24164-RIPE
tech-c:         JS6657-RIPE
tech-c:         NW2173-RIPE
address:        TBS Strom AG
address:        Muehleweg 1
address:        CH-5034 Suhr
phone:          +41 62 855 57 57
fax-no:         +41 62 855 57 50
nic-hdl:        TBS14-RIPE
mnt-by:         CH-LAN-MNT
created:        2006-10-09T15:10:51Z
last-modified:  2017-06-06T13:05:49Z
source:         RIPE # Filtered

person:         Johnny Strebel
address:        TBS Strom AG
address:        Muehleweg 1
address:        CH-5034 Suhr
phone:          +41 62 855 57 57
fax-no:         +41 62 855 57 50
nic-hdl:        JS6657-RIPE
mnt-by:         CH-LAN-MNT
created:        2006-10-09T15:08:49Z
last-modified:  2017-06-06T13:01:53Z
source:         RIPE # Filtered

% Information related to '91.138.64.0/18AS15600'

route:          91.138.64.0/18
descr:          Quickline AG
descr:          Nidau, Switzerland
origin:         AS15600
mnt-by:         CH-LAN-MNT
created:        2017-06-06T12:45:10Z
last-modified:  2017-06-06T12:45:10Z
source:         RIPE # Filtered

% This query was served by the RIPE Database Query Service version 1.113.2 (SHETLAND)

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