% 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 '212.52.128.0 - 212.52.159.255'

% No abuse contact registered for 212.52.128.0 - 212.52.159.255

inetnum:        212.52.128.0 - 212.52.159.255
netname:        BF-ONATEL-980427
descr:          ONATEL (Office National des Telecommunications, PTT)
descr:          Provider Local Registry
country:        BF
org:            ORG-ONdT1-AFRINIC
admin-c:        AB72-AFRINIC
admin-c:        EG4-AFRINIC
admin-c:        NK15-AFRINIC
admin-c:        MZ21-AFRINIC
tech-c:         AB72-AFRINIC
tech-c:         EG4-AFRINIC
tech-c:         NK15-AFRINIC
tech-c:         MZ21-AFRINIC
status:         ALLOCATED PA
remarks:        data has been transferred from RIPE Whois Database 20050221
mnt-by:         AFRINIC-HM-MNT
mnt-lower:      FasoNet-SECURITY-MNT
mnt-domains:    FasoNet-SECURITY-MNT
source:         AFRINIC # Filtered
parent:         0.0.0.0 - 255.255.255.255

organisation:   ORG-ONdT1-AFRINIC
org-name:       ONATEL (Office National des Telecommunications, PTT)
org-type:       LIR
country:        BF
address:        01 BP 10 000
address:        Ouagadougou 01
address:        Ouagadougou
phone:          tel:+226-50-33-40-01;ext=476
phone:          tel:+226-70-41-44-41
phone:          tel:+226-70-76-29-28
phone:          tel:+226-70-20-11-80
phone:          tel:+226-70-20-13-46
fax-no:         tel:+226-50-31-03-31
admin-c:        NK15-AFRINIC
admin-c:        EG4-AFRINIC
admin-c:        AB72-AFRINIC
admin-c:        MZ21-AFRINIC
tech-c:         NK15-AFRINIC
tech-c:         EG4-AFRINIC
tech-c:         AB72-AFRINIC
tech-c:         MZ21-AFRINIC
mnt-ref:        AFRINIC-HM-MNT
mnt-ref:        LIR-BF-ONATEL-MNT
mnt-by:         AFRINIC-HM-MNT
remarks:        data has been transferred from RIPE Whois Database 20050221
source:         AFRINIC # Filtered

person:         ABDOULAYE BASSOLE
nic-hdl:        AB72-AFRINIC
address:        01 BP 10000 ONATEL
address:        OUAGADOUGOU
address:        BURKINA
address:        OUAGADOUGOU
address:        Burkina Faso
phone:          tel:+226-70-20-11-80
mnt-by:         GENERATED-UOY38Z0BHTOTWWHZJOQCKJQ1YX56NXMA-MNT
source:         AFRINIC # Filtered

person:         Emmanuel GUIGMA
nic-hdl:        EG4-AFRINIC
address:        ONATEL, 01 P.O. BOX 10 000
address:        Ouagadougou 01
address:        Burkina Faso
address:        OUAGADOUGOU 01 BP 10000
address:        Burkina Faso
phone:          tel:+226-70-20-13-38
fax-no:         tel:+226-50-31-53-86
mnt-by:         GENERATED-YRL5EUYQFWVVXA2SGBQTXHJKH1RZJO92-MNT
source:         AFRINIC # Filtered

person:         MAHAMADI ZONGO
address:        01 BP 10000 OUAGADOUGOU 01
address:        Burkina Faso
phone:          tel:+226-70-27-01-27
nic-hdl:        MZ21-AFRINIC
source:         AFRINIC # Filtered
mnt-by:         GENERATED-PPZM12A5NSF1ZRBTHIKIDFL0HXVMPF1K-MNT

person:         NEYA KOELE
address:        01 BP 10000 ONATEL
address:        OUAGADOUGOU
address:        BURKINA
phone:          tel:+226-70-41-44-41
nic-hdl:        NK15-AFRINIC
mnt-by:         GENERATED-EBIDRMDFRGMMCWXTJLH9ZQ6XU2VZMNF5-MNT
source:         AFRINIC # Filtered

% Information related to '212.52.128.0/20AS25543'

route:          212.52.128.0/20
descr:          route object ONATEL BURKINA FASO
origin:         AS25543
mnt-by:         FasoNet-SECURITY-MNT
source:         AFRINIC # Filtered