% 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 '151.252.216.0 - 151.252.223.255'

% Abuse contact for '151.252.216.0 - 151.252.223.255' is 'support@greenfiber.de'

inetnum:        151.252.216.0 - 151.252.223.255
netname:        DE-INTERNEXIOSD-20120824
country:        DE
org:            ORG-ISDG5-RIPE
admin-c:        GREE1-RIPE
tech-c:         GREE1-RIPE
status:         ALLOCATED PA
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         GREENFIBER-MNT
mnt-routes:     GREENFIBER-MNT
created:        2020-04-09T12:35:38Z
last-modified:  2022-05-23T15:35:51Z
source:         RIPE

organisation:   ORG-ISDG5-RIPE
org-name:       Greenfiber Internet & Dienste GmbH
country:        DE
org-type:       LIR
address:        Oldenfelder Straße 26
address:        22143
address:        Hamburg
address:        GERMANY
phone:          +4957428099666
phone:          +498008220228
admin-c:        GREE1-RIPE
tech-c:         GREE1-RIPE
abuse-c:        GREE1-RIPE
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         GREENFIBER-MNT
created:        2019-09-06T07:46:18Z
last-modified:  2024-03-06T09:44:17Z
source:         RIPE # Filtered
mnt-ref:        GREENFIBER-MNT

role:           Greenfiber NOC
address:        Greenfiber Internet & Dienste GmbH
address:        Moenckebergstrasse 19
address:        Moenckebergstrasse 19
address:        20095 Hamburg
address:        GERMANY
abuse-mailbox:  support@greenfiber.de
nic-hdl:        GREE1-RIPE
mnt-by:         GREENFIBER-MNT
created:        2022-05-23T14:47:09Z
last-modified:  2022-05-23T14:51:16Z
source:         RIPE # Filtered

% Information related to '151.252.219.0/24AS213281'

route:          151.252.219.0/24
descr:          Greenfiber Internet & Dienste GmbH
origin:         AS213281
mnt-by:         GREENFIBER-MNT
created:        2022-05-24T10:04:03Z
last-modified:  2022-05-24T10:04:03Z
source:         RIPE

% This query was served by the RIPE Database Query Service version 1.111 (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