103.11.178.0/24

inetnum:        103.11.178.0 - 103.11.178.255
netname:        NPDC-NZ
descr:          New Plymouth District Council
descr:          Private Bag 2025, New Plymouth
country:        NZ
org:            ORG-NPDC1-AP
admin-c:        WD523-AP
tech-c:         WD523-AP
abuse-c:        AN1174-AP
status:         ASSIGNED PORTABLE
remarks:        --------------------------------------------------------
remarks:        To report network abuse, please contact mnt-irt
remarks:        For troubleshooting, please contact tech-c and admin-c
remarks:        Report invalid contact via www.apnic.net/invalidcontact
remarks:        --------------------------------------------------------
mnt-by:         APNIC-HM
mnt-routes:     MAINT-NPDC-NZ
mnt-irt:        IRT-NPDC-NZ
last-modified:  2021-01-20T03:42:53Z
source:         APNIC


person:         Wayne Dowsing
address:        Private Bag 2025, New Plymouth
country:        NZ
phone:          +6467596090
e-mail:         dowsingw@npdc.govt.nz
nic-hdl:        WD523-AP
mnt-by:         MAINT-NEW
last-modified:  2011-10-28T05:26:01Z
source:         APNIC

irt:            IRT-NPDC-NZ
address:        Private Bag 2025, New Plymouth
e-mail:         dowsingw@npdc.govt.nz
abuse-mailbox:  dowsingw@npdc.govt.nz
admin-c:        WD523-AP
tech-c:         WD523-AP
auth:           # Filtered
mnt-by:         MAINT-NPDC-NZ
last-modified:  2021-01-20T03:41:50Z
source:         APNIC

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.