% 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 '89.145.0.0 - 89.145.31.255'

% Abuse contact for '89.145.0.0 - 89.145.31.255' is 'abuse@telta.de'

inetnum:        89.145.0.0 - 89.145.31.255
netname:        TELTA-DYNAMIC-BROADBAND-NETWORK-1
descr:          TELTA Citynetz GmbH
country:        DE
admin-c:        NG2126-RIPE
tech-c:         NG2126-RIPE
tech-c:         BM9999-RIPE
status:         ASSIGNED PA
mnt-by:         TELTA-MNT
created:        2018-06-28T07:56:50Z
last-modified:  2018-06-28T07:56:50Z
source:         RIPE # Filtered

person:         Bjoern Moldenhauer
address:        TELTA Citynetz GmbH
address:        Bergerstr. 105
address:        D-16225 Eberswalde
address:        Germany
phone:          +49 3334 277 513
fax-no:         +49 3334 277 510
mnt-by:         TELTA-MNT
nic-hdl:        BM9999-RIPE
created:        2013-04-24T06:36:47Z
last-modified:  2013-04-24T06:36:47Z
source:         RIPE # Filtered

person:         Niels Graupe
address:        TELTA Citynetz GmbH
address:        Bergerstr. 105
address:        D-16225 Eberswalde
address:        Germany
phone:          +49 3334 277 507
fax-no:         +49 3334 277 510
nic-hdl:        NG2126-RIPE
mnt-by:         TELTA-MNT
created:        2002-02-13T21:25:22Z
last-modified:  2012-08-13T12:12:37Z
source:         RIPE # Filtered

% Information related to '89.145.0.0/18AS21032'

route:          89.145.0.0/18
descr:          de.telta
origin:         AS21032
mnt-by:         TELTA-MNT
created:        2006-01-31T07:33:35Z
last-modified:  2006-01-31T07:33:35Z
source:         RIPE

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