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

% IP Client: 203.119.110.26
 
% Joint Whois - whois.lacnic.net
%  This server accepts single ASN, IPv4 or IPv6 queries

% LACNIC resource: whois.lacnic.net

% Copyright LACNIC lacnic.net
%  The data below is provided for information purposes
%  and to assist persons in obtaining information about or
%  related to AS and IP numbers registrations
%  By submitting a whois query, you agree to use this data
%  only for lawful purposes.
%  2024-05-17 22:22:44 (-03 -03:00)

inetnum:     209.99.224.0/20
status:      allocated
aut-num:     N/A
owner:       ERTACH S.A.
ownerid:     AR-MASA5-LACNIC
responsible: Administrador de Direcciones IP - CLARO
address:     Av. Juan de Garay, 34, 
address:     C1063ABN - Buenos Aires - CF
country:     AR
phone:       +54 11 4000-3000 [3270]
owner-c:     ADL82
tech-c:      SAD3
abuse-c:     CAT66
inetrev:     209.99.232.0/21
nserver:     DNS1.MILLIC.COM.AR [lame - not published]
nsstat:      20240517 UH
nslastaa:    20200623
nserver:     DNS2.MILLIC.COM.AR [lame - not published]
nsstat:      20240517 UH
nslastaa:    20200623
inetrev:     209.99.224.0/22
nserver:     DNS1.MILLIC.COM.AR [lame - not published]
nsstat:      20240517 UH
nslastaa:    20200623
nserver:     DNS2.MILLIC.COM.AR [lame - not published]
nsstat:      20240517 UH
nslastaa:    20200623
inetrev:     209.99.228.0/23
nserver:     DNS1.MILLIC.COM.AR [lame - not published]
nsstat:      20240517 UH
nslastaa:    20200624
nserver:     DNS2.MILLIC.COM.AR [lame - not published]
nsstat:      20240517 UH
nslastaa:    20200624
inetrev:     209.99.230.0/24
nserver:     DNS1.MILLIC.COM.AR [lame - not published]
nsstat:      20240517 UH
nslastaa:    20200624
nserver:     DNS2.MILLIC.COM.AR [lame - not published]
nsstat:      20240517 UH
nslastaa:    20200624
inetrev:     209.99.231.0/24
nserver:     DNS1.IPNEXT.NET.AR [lame - not published]
nsstat:      20240517 QREFUSED
nslastaa:    20080617
nserver:     DNS2.IPNEXT.NET.AR [lame - not published]
nsstat:      20240517 QREFUSED
nslastaa:    20080617
created:     20010502
changed:     20220608

nic-hdl:     ADL82
person:      Administrador Lacnic
e-mail:      adm_lacnic@claro.com.ar
address:     Av de Mayo, 878, 
address:     C1084AAQ - Buenos Aires - 
country:     AR
phone:       +54  1140003246
created:     20220602
changed:     20220602

nic-hdl:     SAD3
person:      IP Addressing AR
e-mail:      ipaddressing.ar@claro.com.ar
address:     Av. de Mayo, 878, -
address:     C1084AAQ - Bs.As, - CF
country:     AR
phone:       +54  1140011300 [34179]
created:     20060511
changed:     20211221

nic-hdl:     CAT66
person:      Abuse Claro AR
e-mail:      abuse@claro.com.ar
address:     Av. de Mayo, 878, -
address:     1425 - Capital Federal - Other
country:     AR
phone:       +54  1141098823 [0000]
created:     20210217
changed:     20210313

% whois.lacnic.net accepts only direct match queries.
% Types of queries are: POCs, ownerid, CIDR blocks, IP
% and AS numbers.

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