% 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 '41.138.85.0 - 41.138.85.255'

% No abuse contact registered for 41.138.85.0 - 41.138.85.255

inetnum:        41.138.85.0 - 41.138.85.255
netname:        tigo-rw
descr:          Tigo Internet Subscribers
org:            ORG-ARL2-AFRINIC
admin-c:        EM68-AFRINIC
tech-c:         HM20-AFRINIC
tech-c:         AM85-AFRINIC
tech-c:         PCN1-AFRINIC
status:         ASSIGNED PA
mnt-by:         AIRTELRW-MNT
mnt-lower:      AIRTELRW-MNT
mnt-domains:    AIRTELRW-MNT
source:         AFRINIC # Filtered
parent:         41.138.80.0 - 41.138.87.255

organisation:   ORG-ARL2-AFRINIC
org-name:       Airtel Rwanda Ltd
org-type:       LIR
country:        RW
address:        Airtel Rwanda Limited, Remera, P.O.Box 4164 Kigali, Rwanda
address:        Kigali
phone:          tel:+250-736-000-055
phone:          tel:+250-736-001-000
phone:          tel:+250-731-000-208
phone:          tel:+250-731-000-854
phone:          tel:+250-722-123-439
phone:          tel:+250-731-000-253
admin-c:        EM68-AFRINIC
tech-c:         LK30-AFRINIC
tech-c:         DB45-AFRINIC
tech-c:         RM104-AFRINIC
tech-c:         AP37-AFRINIC
mnt-ref:        AFRINIC-HM-MNT
mnt-ref:        AIRTELRW-MNT
mnt-by:         AFRINIC-HM-MNT
source:         AFRINIC # Filtered

person:         Alain Mugisha
address:        Airtel Rwanda Limited, Remera, P.O.Box 4164 Kigali, Rwanda
phone:          tel:+250-731-000-059
nic-hdl:        AM85-AFRINIC
mnt-by:         GENERATED-HSRZOGP5C9L4L9EUAWS08NOKEY5FH7RY-MNT
source:         AFRINIC # Filtered

person:         Emmanuel MUSAFIRI
address:        AIRTEL Rwanda
phone:          tel:+250-736-000-055
nic-hdl:        EM68-AFRINIC
mnt-by:         GENERATED-6YO1XVD0BYSBAOON6KAYSZQ7WJ3TV50A-MNT
source:         AFRINIC # Filtered

person:         Hamani Maiga
address:        Airtel Africa Parkside Towers Mombasa Road PO Box 962 00100 Nairobi Kenya
phone:          tel:+254-731-005479
fax-no:         tel:+254-731-005479
nic-hdl:        HM20-AFRINIC
mnt-by:         GENERATED-TWWCQCNVDWD8BVDHLSGAU4X2EVPS3JWF-MNT
source:         AFRINIC # Filtered

person:         Pierre Celestin NKUNDINTWARI
address:        AIRTEL Rwanda
phone:          tel:+250-731-000-208
nic-hdl:        PCN1-AFRINIC
mnt-by:         GENERATED-VBNDX3DCTE29YQPMGD6SKBW0MRND8GPS-MNT
source:         AFRINIC # Filtered

% Information related to '41.138.85.0/24AS37124'

route:          41.138.85.0/24
descr:          Airtel-RW-41.138.85.0/24
origin:         AS37124
mnt-lower:      AIRTELRW-MNT
mnt-by:         AIRTELRW-MNT
source:         AFRINIC # Filtered