103.73.149.0/24

inetnum:        103.73.148.0 - 103.73.151.255
netname:        PINKEYIT
descr:          Pinkey Internet
admin-c:        MA1008-AP
tech-c:         MA1008-AP
country:        IN
mnt-by:         MAINT-IN-IRINN
mnt-irt:        IRT-PINKEYIT-IN
mnt-routes:     MAINT-IN-PINKEYIT
status:         ASSIGNED PORTABLE
changed:        hm-changed@apnic.net 20160829
source:         APNIC

irt:            IRT-PINKEYIT-IN
address:        56/1548, Muncipal Colony, Opp. Holy Angel School, Malwani, Malad West,Mumbai,Maharashtra-400095
e-mail:         pinkeyinternet@gmail.com
abuse-mailbox:  pinkeyinternet@gmail.com
admin-c:        MA1008-AP
tech-c:         MA1008-AP
auth:           # Filtered
mnt-by:         MAINT-IN-PINKEYIT
changed:        pinkeyinternet@gmail.com 20160829
source:         APNIC

role:           Manager Admin
address:        56/1548, Muncipal Colony, Opp. Holy Angel School, Malwani, Malad West,Mumbai,Maharashtra-400095
country:        IN
phone:          +91 02265064848
e-mail:         pinkeyinternet@gmail.com
admin-c:        PS964-AP
tech-c:         PS964-AP
nic-hdl:        MA1008-AP
mnt-by:         MAINT-IN-PINKEYIT
changed:        pinkeyinternet@gmail.com 20160829
source:         APNIC

route:          103.73.148.0/22
descr:          Pinkey Internet
origin:         AS132764
mnt-by:         MAINT-IN-IRINN
changed:        pinkeyinternet@gmail.com 20170207
mnt-routes:     MAINT-IN-PINKEYIT
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.