196.201.112.0/21

inetnum:        196.201.114.0 - 196.201.115.255
netname:        Radius-FTTH-PPPoE-Range-JHB4
descr:          Radius-FTTH-PPPoE-Range-JHB4
country:        ZA
admin-c:        WH2-AFRINIC
tech-c:         WH2-AFRINIC
status:         ASSIGNED PA
mnt-by:         ICONNECTSA-MNT
changed:        ***@iconnecttelecoms.com 20170126
source:         AFRINIC




person:         WH Heesen
address:        86 Caraway Ave
                Newlands
                Pretoria
                South Africa
phone:          +27722113960
fax-no:         +27
e-mail:         heinrich@iconnecttelecoms.com
nic-hdl:        WH2-AFRINIC
notify:         heinrich@iconnecttelecoms.com
mnt-by:         GENERATED-N4O5DDPMQEVNWNYQDEANGBOQVDHUCPQW-MNT
changed:        heinrich@iconnecttelecoms.com 20130624
source:         AFRINIC

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.