% 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 'AS208189 - AS216475'

as-block:       AS208189 - AS216475
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:        2023-08-11T15:50:53Z
last-modified:  2023-08-11T15:50:53Z
source:         RIPE

% Information related to 'AS215088'

% Abuse contact for 'AS215088' is 'abuse@sidn.nl'

aut-num:        AS215088
as-name:        SIDNLABS
descr:          SIDN Labs lab network
remarks:        https://www.peeringdb.com/net/35974
remarks:        https://www.sidnlabs.nl
org:            ORG-SIDN1-RIPE
import:         from AS1140 accept ANY
export:         to AS1140 announce AS215088:AS-SIDNLABS
mp-import:      afi ipv6.unicast from AS1103 accept ANY
mp-export:      afi ipv6.unicast to AS1103 announce  AS215088:AS-SIDNLABS
mp-import:      afi ipv6.unicast from AS1101 accept ANY
mp-export:      afi ipv6.unicast to AS1101 announce  AS215088:AS-SIDNLABS
import:         from AS1101 accept ANY
export:         to AS1101 announce AS215088:AS-SIDNLABS
import:         from AS1103 accept ANY
export:         to AS1103 announce AS215088:AS-SIDNLABS
admin-c:        SA42912-RIPE
tech-c:         SA42912-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         SIDNLABS-MNT
mnt-by:         SIDN-MNT
created:        2024-04-17T07:15:19Z
last-modified:  2024-08-20T14:03:38Z
source:         RIPE

organisation:   ORG-SIDN1-RIPE
org-name:       Stichting Internet Domeinregistratie Nederland
country:        NL
org-type:       LIR
address:        Postbus 5022
address:        6802 EA
address:        Arnhem
address:        NETHERLANDS
phone:          +31263525500
fax-no:         +31263525505
tech-c:         SIDN1
admin-c:        SIDN2
abuse-c:        SIDN3
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        SIDN-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         SIDN-MNT
created:        2008-10-13T10:54:48Z
last-modified:  2020-12-16T12:36:23Z
source:         RIPE # Filtered

role:           SIDNLABS admin
address:        Meander 501
address:        PO Box 5022
address:        6802 EA Arnhem
abuse-mailbox:  sidnlabs@sidn.nl
tech-c:         MM59259-RIPE
tech-c:         RK11871-RIPE
tech-c:         EL29366-RIPE
nic-hdl:        SA42912-RIPE
mnt-by:         SIDNLABS-MNT
created:        2024-03-15T08:30:02Z
last-modified:  2024-04-18T08:03:06Z
source:         RIPE # Filtered

% This query was served by the RIPE Database Query Service version 1.113.2 (DEXTER)

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