% 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 '91.26.188.112 - 91.26.188.119'

% Abuse contact for '91.26.188.112 - 91.26.188.119' is 'auftrag@nic.telekom.de'

inetnum:        91.26.188.112 - 91.26.188.119
netname:        PPLAW-BERLIN-NET
descr:          P + P Poellath + Partners Rechtsanwaelte u. Steuerber.
country:        DE
admin-c:        MM57922-RIPE
tech-c:         MM57922-RIPE
status:         ASSIGNED PA
mnt-by:         DTAG-NIC
created:        2023-07-27T13:09:51Z
last-modified:  2023-07-27T13:09:51Z
source:         RIPE # Filtered

person:         Marcus Maerthesheimer
address:        Potsdamer Platz 5, 10785, Berlin, Deutschland
phone:          +49 30 25353 900
mnt-by:         DTAG-NIC
nic-hdl:        MM57922-RIPE
created:        2023-06-09T15:02:42Z
last-modified:  2023-06-09T17:49:50Z
source:         RIPE # Filtered

% Information related to '91.0.0.0/10AS3320'

route:          91.0.0.0/10
descr:          Deutsche Telekom AG, Internet service provider
origin:         AS3320
member-of:      AS3320:RS-PA-TELEKOM
mnt-by:         DTAG-RR
created:        2006-07-11T08:59:56Z
last-modified:  2006-07-11T08:59:56Z
source:         RIPE

% 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