% 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 '41.215.148.0 - 41.215.151.255'

% No abuse contact registered for 41.215.148.0 - 41.215.151.255

inetnum:        41.215.148.0 - 41.215.151.255
netname:        Swazi-Net-DSL
descr:          Swazi.net is an ISP that provide DSL services
country:        SZ
admin-c:        MT15-AFRINIC
admin-c:        LM9-AFRINIC
tech-c:         MT15-AFRINIC
tech-c:         LM9-AFRINIC
status:         ASSIGNED PA
mnt-by:         TF-69-63-64-0-69-63-79-255-MNT
source:         AFRINIC # Filtered
parent:         41.215.144.0 - 41.215.159.255

person:         Lwazi Maziya
address:        Swaziland Posts & Telecommunications Corp.,
address:        P.O. Box 125   Mbabane, H100
address:        Swaziland
address:        Mbabane H100
address:        Swaziland
phone:          tel:+268-2405-2161
nic-hdl:        LM9-AFRINIC
mnt-by:         GENERATED-KXGWEUHEMWBMDDPTWSKMEQDUNLKUJL5L-MNT
source:         AFRINIC # Filtered

person:         Musa Tsela
address:        Swaziland Post & Telecoms
address:        Mbabane H100
address:        Swaziland
phone:          tel:+268-2405-2434
nic-hdl:        MT15-AFRINIC
mnt-by:         GENERATED-TGIHZLI27X0TS3CPNK8O1FGWQGYYW9BU-MNT
source:         AFRINIC # Filtered

% Information related to '41.215.144.0/20AS19711'

route:          41.215.144.0/20
descr:          Eswatini Telecom - retail block
origin:         AS19711
mnt-by:         TF-69-63-64-0-69-63-79-255-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