% 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 '145.100.208.0 - 145.100.215.255'

% Abuse contact for '145.100.208.0 - 145.100.215.255' is 'cert@surfcert.nl'

inetnum:        145.100.208.0 - 145.100.215.255
netname:        NOORDERPOORTCOLLEGE-NET
descr:          Noorderpoort College
country:        NL
admin-c:        NCAI2-RIPE
tech-c:         NCAI2-RIPE
status:         LEGACY
mnt-by:         SN-LIR-MNT
mnt-lower:      SN-LIR-MNT
mnt-routes:     AS1103-MNT
mnt-irt:        irt-SURFcert
created:        2010-06-24T11:50:27Z
last-modified:  2021-10-07T13:59:43Z
source:         RIPE # Filtered

role:           Noorderpoort College afdeling ICT/ Datacom & Security
address:        Verzetsstrijderslaan 4
address:        9727 CE
address:        Groningen
address:        NL
phone:          +3150-5977400
nic-hdl:        NCAI2-RIPE
remarks:        Abuse via cert@noorderpoort.nl
mnt-by:         SN-LIR-MNT
mnt-by:         SN-LIR-MNT
created:        2021-10-07T13:33:01Z
last-modified:  2021-10-07T13:33:01Z
source:         RIPE # Filtered

% Information related to '145.100.0.0/15AS1103'

route:          145.100.0.0/15
descr:          145.100.0.0/15 aggregate SURFNET-UNO
origin:         AS1103
mnt-by:         AS1103-MNT
created:        2002-02-27T13:45:55Z
last-modified:  2019-03-21T09:01:43Z
source:         RIPE # Filtered

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