% 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 '196.249.64.0 - 196.249.127.255'

% No abuse contact registered for 196.249.64.0 - 196.249.127.255

inetnum:        196.249.64.0 - 196.249.127.255
netname:        VIETTEL-TANZANIA
descr:          Viettel Tanzania
country:        TZ
org:            ORG-VT2-AFRINIC
admin-c:        TNV1-AFRINIC
admin-c:        NVP1-AFRINIC
admin-c:        JJK1-AFRINIC
admin-c:        HTH1-AFRINIC
admin-c:        NHP1-AFRINIC
tech-c:         TNV1-AFRINIC
tech-c:         NVP1-AFRINIC
tech-c:         NHP1-AFRINIC
tech-c:         SYK1-AFRINIC
tech-c:         NHW1-AFRINIC
status:         ALLOCATED PA
mnt-by:         AFRINIC-HM-MNT
mnt-lower:      VIETTEL-TZ-MNT
mnt-routes:     VIETTEL-TZ-MNT
source:         AFRINIC # Filtered
parent:         196.0.0.0 - 196.255.255.255

organisation:   ORG-VT2-AFRINIC
org-name:       Viettel Tanzania PLC
org-type:       LIR
country:        TZ
address:        10th Floor, Tanzanite Park, Plot No. 38, South Ursino, New Bagamoyo Road P.O.BOX 34716
address:        Dar es Salaam
phone:          tel:+255-629-099-939
phone:          tel:+255-628-988-888
phone:          tel:+255-622-277-048
phone:          tel:+255-627-397-398
phone:          tel:+255-626-579-999
admin-c:        JJK1-AFRINIC
admin-c:        TNV1-AFRINIC
admin-c:        NVP1-AFRINIC
admin-c:        HTH1-AFRINIC
admin-c:        NHP1-AFRINIC
tech-c:         TNV1-AFRINIC
tech-c:         NVP1-AFRINIC
tech-c:         NHP1-AFRINIC
tech-c:         SYK1-AFRINIC
tech-c:         NHW1-AFRINIC
mnt-ref:        AFRINIC-HM-MNT
mnt-ref:        VIETTEL-TZ-MNT
mnt-by:         AFRINIC-HM-MNT
source:         AFRINIC # Filtered

person:         Hoang Tung Hung
address:        10th Floor,
address:        Tanzanite Park,
address:        Plot No. 38, South Ursino,
address:        New Bagamoyo Road
address:        P.O.BOX 34716
address:        Dar es Salaam
address:        Tanzania, United Republic of
phone:          tel:+255-612-668-888
nic-hdl:        HTH1-AFRINIC
source:         AFRINIC # Filtered
mnt-by:         GENERATED-LBBETPQQQWGDZKQDLLSXTBXFJWFXVNPQ-MNT

person:         Justus Joseph Kashashari
address:        10th Floor,
address:        Tanzanite Park,
address:        Plot No. 38, South Ursino,
address:        New Bagamoyo Road
address:        P.O.BOX 34716
address:        Dar es Salaam
address:        Tanzania, United Republic of
phone:          tel:+255-629-101-977
nic-hdl:        JJK1-AFRINIC
source:         AFRINIC # Filtered
mnt-by:         GENERATED-TKIEPCRQOBWCXWCZURJIE7OI0LU1HH4G-MNT

person:         Ngo Hoang Phuc
nic-hdl:        NHP1-AFRINIC
address:        10th Floor,
address:        Tanzanite Park,
address:        Plot No. 38, South Ursino,
address:        New Bagamoyo Road
address:        P.O.BOX 34716
address:        Dar es Salaam
address:        Tanzania, United Republic of
address:        Dar es Salaam 14111
address:        Tanzania, United Republic of
phone:          tel:+255-611-983-688
mnt-by:         GENERATED-QQQB1QIMCKPSWUJLAOD9YLFYT9GJORHP-MNT
source:         AFRINIC # Filtered

person:         Nebson Hezron William
address:        10th Floor,
address:        Tanzanite Park,
address:        Plot No. 38, South Ursino,
address:        New Bagamoyo Road
address:        P.O.BOX 34716
address:        Dar es Salaam
address:        Tanzania, United Republic of
phone:          tel:+255-629-089-276
nic-hdl:        NHW1-AFRINIC
source:         AFRINIC # Filtered
mnt-by:         GENERATED-YWEVXD4H04M2IQLJCE8YTBODGNMK9GB0-MNT

person:         Nguyen Van Phon
address:        10th Floor, Tanzanite Park Building, New Bagamoyo Road,
address:        P.O Box 34716
address:        Dar es Salaam
address:        Tanzania, United Republic of
phone:          tel:+255-626-579-999
nic-hdl:        NVP1-AFRINIC
source:         AFRINIC # Filtered
mnt-by:         GENERATED-FPPYVHU5E2GSEZKP7CMWNSHNRO9N0E8P-MNT

person:         Sadri Yahaya Kambagha
address:        10th Floor,
address:        Tanzanite Park,
address:        Plot No. 38, South Ursino,
address:        New Bagamoyo Road
address:        P.O.BOX 34716
address:        Dar es Salaam
address:        Tanzania, United Republic of
phone:          tel:+255-620-780-781
nic-hdl:        SYK1-AFRINIC
source:         AFRINIC # Filtered
mnt-by:         GENERATED-IW0JX6TWEGLGZXSHHMHJYS7DV4GKUSDC-MNT

person:         Thu Nguyen Van
address:        10th Floor, Tanzanite Park Building, New Bagamoyo Road,
address:        P.O Box 34716
address:        Dar es Salaam 34716
address:        Tanzania, United Republic of
phone:          tel:+255-627-397-398
nic-hdl:        TNV1-AFRINIC
source:         AFRINIC # Filtered
mnt-by:         GENERATED-ANVTKVNSAIPOQNPBWGPYGH1TPQREVJ1X-MNT

% Information related to '196.249.97.0/24AS327885'

route:          196.249.97.0/24
descr:          VIETTEL TANZANIA PLC
origin:         AS327885
mnt-by:         VIETTEL-TZ-MNT
source:         AFRINIC # Filtered