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

% This is the AfriNIC Whois server.
% The AFRINIC whois database is subject to  the following terms of Use. See https://afrinic.net/whois/terms

% Note: this output has been filtered.
%       To receive output for a database update, use the "-B" flag.

% Information related to '105.233.0.0 - 105.233.255.255'

% No abuse contact registered for 105.233.0.0 - 105.233.255.255

inetnum:        105.233.0.0 - 105.233.255.255
netname:        CYBERSMART-ADSL
descr:          CYBERSMART
country:        ZA
org:            ORG-CA2-AFRINIC
admin-c:        LFI12-AFRINIC
admin-c:        ZB10-AFRINIC
tech-c:         LFI12-AFRINIC
tech-c:         ZB10-AFRINIC
status:         ALLOCATED PA
mnt-by:         AFRINIC-HM-MNT
mnt-lower:      CYBERSMART-MNT
source:         AFRINIC # Filtered
parent:         105.0.0.0 - 105.255.255.255

organisation:   ORG-CA2-AFRINIC
org-name:       Cybersmart
org-type:       LIR
country:        ZA
address:        72 Cantebury street
address:        Cape Town 8000
phone:          tel:+27-21-286-0123
phone:          tel:+27-21-286-0123
phone:          tel:+27-83-334-4741
fax-no:         tel:+27-21-461-0015
admin-c:        LFI12-AFRINIC
admin-c:        ZB10-AFRINIC
tech-c:         LFI12-AFRINIC
tech-c:         ZB10-AFRINIC
mnt-ref:        AFRINIC-HM-MNT
mnt-ref:        CYBERSMART-MNT
mnt-by:         AFRINIC-HM-MNT
source:         AFRINIC # Filtered

person:         Laurie Fialkov
address:        72 Canterbury Street
address:        Cape Town
address:        8000
address:        ZA
phone:          tel:+27-21-461-0014
nic-hdl:        LFI12-AFRINIC
mnt-by:         CYBERSMART-MNT
source:         AFRINIC # Filtered

person:         Zaid Bester
nic-hdl:        ZB10-AFRINIC
address:        72 Canterbury Street, Zonnebloem 8001
address:        Cape Town
address:        South Africa
address:        Cape Town 8001
address:        South Africa
phone:          tel:+27-21-286-0123
mnt-by:         GENERATED-CC9ECQANCPANCGUL81JQUD4WZ6C6BAB8-MNT
source:         AFRINIC # Filtered

% Information related to '105.233.0.0/17AS36874'

route:          105.233.0.0/17
descr:          Lightspeed/Cybersmart
origin:         AS36874
mnt-by:         CYBERSMART-MNT
source:         AFRINIC # Filtered

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