% 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 'AS51357 - AS52223'

as-block:       AS51357 - AS52223
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:        2021-12-09T08:21:17Z
last-modified:  2021-12-09T08:21:17Z
source:         RIPE

% Information related to 'AS51896'

% Abuse contact for 'AS51896' is 'hringdu@hringdu.is'

aut-num:        AS51896
as-name:        HRINGDU-AS
org:            ORG-He5-RIPE
remarks:        -------------------------------------
remarks:        - IP TRANSIT PARTNERS IMPORT -
remarks:        -------------------------------------
import:         from AS11260 action pref=60; accept ANY
import:         from AS6453 action pref=60; accept ANY
import:         from AS6677 action pref=60; accept ANY
import:         from AS56704 action pref=60; accept ANY
remarks:        -------------------------------------
remarks:        - RIX PEERING PARTNERS IMPORT -
remarks:        -------------------------------------
import:         from AS1850 action pref=100; accept AS1850
import:         from AS2603 action pref=100; accept AS-NORDUNET
import:         from AS6677 action pref=100; accept AS-ICENET-RIX;
import:         from AS12969 action pref=100; accept AS12969:AS-VFIS
import:         from AS15474 action pref=100; accept AS-RHNET
import:         from AS24743 action pref=100; accept AS24743
import:         from AS25152 action pref=100; accept RS-KROOT-ISNIC
import:         from AS25509 action pref=100; accept AS-VORTEX
import:         from AS30818 action pref=100; accept AS30818
import:         from AS31441 action pref=100; accept AS31441
import:         from AS39472 action pref=100; accept AS39472
import:         from AS43892 action pref=100; accept AS43892:AS-BASIS
import:         from AS44515 action pref=100; accept AS44515
import:         from AS44735 action pref=100; accept AS-SIP
remarks:        -------------------------------------
remarks:        - IP TRANSIT CUSTOMERS IMPORT -
remarks:        -------------------------------------
import:         from AS51017 action pref=150; accept AS51017
import:         from AS59788 action pref=100; accept AS59788
remarks:        -------------------------------------
remarks:        - IP TRANSIT CUSTOMERS EXPORT -
remarks:        -------------------------------------
export:         to AS51017 announce ANY
remarks:        -------------------------------------
remarks:        - IP TRANSIT PARTNERS EXPORT -
remarks:        -------------------------------------
export:         to AS11260 announce AS-HRINGDU
export:         to AS6453 announce AS-HRINGDU
export:         to AS56704 announce AS-Hringdu
export:         to AS6677 announce AS-HRINGDU
export:         to AS6677 announce AS-NORTH
remarks:        -------------------------------------
remarks:        - RIX PEERING PARTNERS EXPORT -
remarks:        -------------------------------------
export:         to AS1850 announce AS-HRINGDU
export:         to AS2603 announce AS-HRINGDU
export:         to AS6677 announce AS-HRINGDU
export:         to AS12969 announce AS-HRINGDU
export:         to AS15474 announce AS-HRINGDU
export:         to AS24743 announce AS-HRINGDU
export:         to AS25152 announce AS-HRINGDU
export:         to AS25509 announce AS-HRINGDU
export:         to AS30818 announce AS-HRINGDU
export:         to AS31441 announce AS-HRINGDU
export:         to AS39472 announce AS-HRINGDU
export:         to AS43892 announce AS-HRINGDU
export:         to AS44515 announce AS-HRINGDU
export:         to AS44735 announce AS-HRINGDU
admin-c:        HN1774-RIPE
tech-c:         HN1774-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         HRINGDU
created:        2010-11-25T13:27:13Z
last-modified:  2022-11-30T11:23:33Z
source:         RIPE # Filtered

organisation:   ORG-He5-RIPE
org-name:       Hringdu ehf
country:        IS
org-type:       LIR
address:        Armuli 27
address:        108
address:        Reykjavik
address:        ICELAND
phone:          +3545377000
fax-no:         +3545377001
abuse-c:        AR15677-RIPE
mnt-ref:        HRINGDU
mnt-ref:        RIPE-NCC-HM-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         HRINGDU
created:        2010-11-23T15:22:01Z
last-modified:  2020-12-16T13:13:59Z
source:         RIPE # Filtered
admin-c:        OJO6-RIPE
admin-c:        OO1149-RIPE

role:           Hringdu NOC
address:        Armuli 23
address:        108 Reykjavik
address:        Iceland
nic-hdl:        HN1774-RIPE
admin-c:        GS19084-RIPE
tech-c:         GS19084-RIPE
mnt-by:         HRINGDU
created:        2013-04-14T17:03:45Z
last-modified:  2022-12-14T09:25:39Z
source:         RIPE # Filtered

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

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