% 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 '165.16.166.0 - 165.16.166.255'

% No abuse contact registered for 165.16.166.0 - 165.16.166.255

inetnum:        165.16.166.0 - 165.16.166.255
netname:        SADV
descr:          SADV
org:            ORG-SL94-AFRINIC
admin-c:        VE5-AFRINIC
tech-c:         VE5-AFRINIC
status:         ASSIGNED PA
mnt-by:         SL94-MNT
mnt-lower:      SL94-MNT
mnt-domains:    SL94-MNT
source:         AFRINIC # Filtered
parent:         165.16.160.0 - 165.16.191.255

organisation:   ORG-SL94-AFRINIC
org-name:       SADV (Pty) Ltd
org-type:       LIR
country:        ZA
address:        31 Georgian Crescent E, Bryanston
address:        Johannesburg 2191
phone:          tel:+27-81-328-3823
phone:          tel:+27-74-524-6017
admin-c:        VE5-AFRINIC
tech-c:         VE5-AFRINIC
tech-c:         LT25-AFRINIC
mnt-ref:        AFRINIC-HM-MNT
mnt-ref:        SL94-MNT
mnt-by:         AFRINIC-HM-MNT
source:         AFRINIC # Filtered

person:         Venita Engelbrecht
nic-hdl:        VE5-AFRINIC
address:        31 Georgian Crescent E
address:        Bryanston
address:        Johannesburg 2191
address:        South Africa
phone:          tel:+27-81-328-3823
mnt-by:         GENERATED-8ENVOWZNWRJJMAVQGA4YHXEP2A1KGPPR-MNT
source:         AFRINIC # Filtered

% Information related to '165.16.166.0/24AS37049'

route:          165.16.166.0/24
origin:         AS37049
descr:          SADV_GP_POOL6
mnt-by:         SL94-MNT
mnt-lower:      SL94-MNT
source:         AFRINIC # Filtered