% 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 '178.255.136.0 - 178.255.143.255'

% Abuse contact for '178.255.136.0 - 178.255.143.255' is 'noc@tkrz.de'

inetnum:        178.255.136.0 - 178.255.143.255
netname:        DE-RHEINET-20100708
country:        DE
org:            ORG-RG21-RIPE
admin-c:        MV10446-RIPE
tech-c:         SS13904-RIPE
status:         ALLOCATED PA
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         RHEINET-MNT
mnt-routes:     RHEINET-MNT
created:        2010-07-08T13:54:52Z
last-modified:  2023-04-05T11:02:01Z
source:         RIPE

organisation:   ORG-RG21-RIPE
org-name:       RheiNet GmbH
country:        DE
org-type:       LIR
address:        Hafenbahn 10
address:        48431
address:        Rheine
address:        GERMANY
phone:          +495971450
fax-no:         +49597145484
mnt-ref:        RHEINET-MNT
mnt-ref:        RIPE-NCC-HM-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         RHEINET-MNT
abuse-c:        RG9446-RIPE
created:        2010-06-16T09:30:56Z
last-modified:  2020-12-16T12:42:05Z
source:         RIPE # Filtered

person:         Manfred Ventker
address:        RheiNet GmbH
address:        Hafenbahn 10
address:        48431 Rheine
address:        Germany
phone:          +49-5971-353
nic-hdl:        MV10446-RIPE
mnt-by:         RHEINET-MNT
created:        2013-08-06T08:53:03Z
last-modified:  2013-08-06T08:53:03Z
source:         RIPE

person:         Stefan Schmees
address:        RheiNet GmbH
address:        Hafenbahn 10
address:        48431 Rheine
address:        Germany
phone:          +49-5971-353
nic-hdl:        SS13904-RIPE
mnt-by:         RHEINET-MNT
created:        2010-07-07T12:45:22Z
last-modified:  2010-07-07T13:15:44Z
source:         RIPE

% Information related to '178.255.136.0/21AS196932'

route:          178.255.136.0/21
descr:          RheiNet GmbH
origin:         AS196932
mnt-by:         RHEINET-MNT
created:        2010-07-19T09:54:35Z
last-modified:  2010-07-19T09:54:35Z
source:         RIPE

% This query was served by the RIPE Database Query Service version 1.112 (BUSA)

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