% 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 'AS21281 - AS21390'

as-block:       AS21281 - AS21390
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:        2018-11-22T15:27:28Z
last-modified:  2018-11-22T15:27:28Z
source:         RIPE

% Information related to 'AS21323'

% Abuse contact for 'AS21323' is 'abuse@t.ht.hr'

aut-num:        AS21323
as-name:        ERSTEBANK
descr:          Rijeka, Croatia
descr:          ESB - member of the ERSTE Group
org:            ORG-EBD2-RIPE
import:         from AS13046 accept ANY
import:         from AS5391 accept ANY
export:         to AS13046 announce AS21323
export:         to AS5391 announce AS21323
admin-c:        BS2171-RIPE
tech-c:         DS2980-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         HPT-MNT
created:        2001-11-27T14:31:52Z
last-modified:  2018-09-04T09:52:36Z
source:         RIPE
sponsoring-org: ORG-HA7-RIPE

organisation:   ORG-EBD2-RIPE
org-name:       Erste&Steiermarkische Bank d.d.
country:        HR
org-type:       OTHER
address:        Jadranski trg 3a
address:        HR-51000 Rijeka, Croatia
phone:          +385 62 373216
abuse-c:        AR29229-RIPE
admin-c:        DS2980-RIPE
tech-c:         DS2980-RIPE
mnt-ref:        HPT-MNT
mnt-by:         HPT-MNT
created:        2013-04-29T08:22:33Z
last-modified:  2022-12-01T17:11:07Z
source:         RIPE # Filtered

person:         Branimir Sigl
address:        Erste & Steiermarkische Bank d.d.
address:        Preradovice bb
address:        HR-43000 Bjelovar
address:        Croatia
phone:          +385 62 37 3202
fax-no:         +385 62 37 3913
mnt-by:         HPT-MNT
nic-hdl:        BS2171-RIPE
created:        2004-09-03T13:36:54Z
last-modified:  2004-09-03T13:36:54Z
source:         RIPE # Filtered

person:         Dragan Skundric
address:        Erste & Steiermarkische Bank d.d.
address:        Preradovice bb
address:        HR-43000 Bjelovar
address:        Croatia
phone:          +385 62 37 3216
fax-no:         +385 62 37 3913
mnt-by:         HPT-MNT
nic-hdl:        DS2980-RIPE
created:        2004-09-03T13:37:15Z
last-modified:  2004-09-03T13:37:15Z
source:         RIPE # Filtered

% This query was served by the RIPE Database Query Service version 1.112 (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