% 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 '217.5.190.136 - 217.5.190.143'

% Abuse contact for '217.5.190.136 - 217.5.190.143' is 'auftrag@nic.telekom.de'

inetnum:        217.5.190.136 - 217.5.190.143
netname:        AVAYA-DETTINGEN-AN-DER-ERMS-NET
descr:          Avaya GmbH & Co. KG
country:        DE
admin-c:        KR2448-RIPE
tech-c:         KR2448-RIPE
status:         ASSIGNED PA
mnt-by:         DTAG-NIC
created:        2016-02-02T10:12:28Z
last-modified:  2019-05-16T16:37:49Z
source:         RIPE # Filtered

person:         Klaus Ringler
address:        Uniplast / AZUR Solar
address:        In den Boegen 11
address:        88299 Leutkirch
address:        DE
phone:          +49 7123 725173
nic-hdl:        KR2448-RIPE
mnt-by:         DTAG-NIC
created:        2013-01-24T07:26:59Z
last-modified:  2013-01-24T07:26:59Z
source:         RIPE # Filtered

% Information related to '217.0.0.0/13AS3320'

route:          217.0.0.0/13
descr:          Deutsche Telekom AG, Internet service provider
origin:         AS3320
member-of:      AS3320:RS-PA-TELEKOM
mnt-by:         DTAG-RR
created:        1970-01-01T00:00:00Z
last-modified:  2004-06-15T17:32:51Z
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