% 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 '91.216.236.0 - 91.216.236.255'

% Abuse contact for '91.216.236.0 - 91.216.236.255' is 'noc@leesontelecom.com'

inetnum:        91.216.236.0 - 91.216.236.255
netname:        LTH-PIV4
country:        IE
org:            ORG-LTHL1-RIPE
admin-c:        HIIN1-RIPE
tech-c:         HIIN1-RIPE
status:         ASSIGNED PI
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         MNT-LT
mnt-routes:     MNT-LT
created:        2010-06-30T12:35:40Z
last-modified:  2022-08-17T18:50:43Z
source:         RIPE

organisation:   ORG-LTHL1-RIPE
org-name:       Leeson Telecom Holdings Ltd
country:        IE
org-type:       LIR
address:        6-9 Trinity Street
address:        Dublin
address:        2
address:        IRELAND
phone:          +35318219350
fax-no:         +35316708225
admin-c:        HIIN1-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        MNT-LT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         MNT-LT
abuse-c:        CK3236-RIPE
created:        2012-06-21T08:55:57Z
last-modified:  2022-08-17T19:08:52Z
source:         RIPE # Filtered

role:           Host Ireland IP Network Operations
address:        6-9 Trinity Street, Dublin 2
nic-hdl:        HIIN1-RIPE
mnt-by:         MNT-LT
created:        2022-08-17T18:43:29Z
last-modified:  2022-09-07T20:17:53Z
source:         RIPE # Filtered
org:            ORG-LTHL1-RIPE

% Information related to '91.216.236.0/24AS199256'

route:          91.216.236.0/24
descr:          Host Ireland
origin:         AS199256
mnt-by:         MNT-LT
created:        2014-04-15T17:00:32Z
last-modified:  2014-04-15T17:00:32Z
source:         RIPE

% Information related to '91.216.236.0/24AS56410'

route:          91.216.236.0/24
origin:         AS56410
mnt-by:         MNT-LT
created:        2022-12-02T17:51:01Z
last-modified:  2022-12-02T17:51:01Z
source:         RIPE

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