% APNIC found the following authoritative answer from: whois.ripe.net

% This is the RIPE Database query service.
% The objects are in RPSL format.
%
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% 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 'AS1101 - AS1200'

as-block:       AS1101 - AS1200
descr:          RIPE NCC ASN block
remarks:        These AS Numbers are assigned to network operators in the RIPE NCC service region.
mnt-by:         RIPE-NCC-HM-MNT
created:        2018-11-22T15:27:09Z
last-modified:  2018-11-22T15:27:09Z
source:         RIPE

% Information related to 'AS1124'

% No abuse contact registered for AS1124

aut-num:        AS1124
as-name:        UVA-NL
descr:          Universiteit van Amsterdam
                Amsterdam
                The Netherlands
import:         from AS1103
                action pref=200;
                accept {0.0.0.0/0}
import:         from AS1104
                action pref=150;
                accept AS1104
import:         from AS1139
                action pref=150;
                accept AS1139
import:         from AS1888
                action pref=150;
                accept AS1888
import:         from AS1890
                action pref=150;
                accept AS1890
import:         from AS3265
                action pref=100;
                accept AS3265
export:         to AS1103
                announce AS1124
export:         to AS1104
                announce AS1124
export:         to AS1139
                announce AS1124
export:         to AS1888
                announce AS1124
export:         to AS1890
                announce AS1124
export:         to AS3265
                announce AS1124
admin-c:        UVA1024-RIPE
tech-c:         UVA1024-RIPE
status:         LEGACY
mnt-by:         AS1124-MNT
created:        2002-08-27T13:40:04Z
last-modified:  2017-11-15T09:12:54Z
source:         RIPE # Filtered

role:           UvA Hostmaster
address:        Universiteit van Amsterdam
address:        ICT Services
address:        Hogehilweg 21
address:        NL-1101CB Amsterdam
address:        The Netherlands
abuse-mailbox:  abuse@uva.nl
remarks:        ----------------------------------------------------
remarks:        Regarding security incidents please contact CERT-UvA
remarks:        For information about CERT-UvA: http://uva.nl/cert
remarks:        ----------------------------------------------------
admin-c:        JPV1024-RIPE
tech-c:         JPV1024-RIPE
tech-c:         SB1024
tech-c:         TH1024
tech-c:         JK1024
nic-hdl:        UVA1024-RIPE
mnt-by:         AS1124-MNT
created:        2009-10-08T15:52:10Z
last-modified:  2023-12-20T15:11:43Z
source:         RIPE # Filtered

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

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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
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-d	Associated reverse domain