37.42.16.0/20

inetnum:        37.42.0.0 - 37.43.255.255
netname:        SA-ETTIHADETISALAT-20120104
country:        SA
org:            ORG-EE2-RIPE
admin-c:        MRA60-RIPE
tech-c:         SM28757-RIPE
status:         ALLOCATED PA
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         MOBILY-MNT
notify:         abuse@mobily.com.sa
mnt-routes:     MOBILY-MNT
created:        2015-01-27T14:38:18Z
last-modified:  2016-09-28T12:03:44Z
source:         RIPE
abuse-email:    abuse@mobily.com.sa
abuse-c:        MAAR3-RIPE
abuse-org:      ORG-EE2-RIPE

organisation:   ORG-EE2-RIPE
org-name:       Etihad Etisalat, a joint stock company
org-type:       LIR
address:        Contracts & Purchasing Dept. PO. BOX 9979, MBC-1-1-8-8 Mobily C1 Building, 4th Floor
address:        11423
address:        RIYADH
address:        SAUDI ARABIA
phone:          +966560101100
fax-no:         +96650316152
e-mail:         RIPE-ADMIN@mobily.com.sa
admin-c:        MRA60-RIPE
admin-c:        SM28757-RIPE
admin-c:        AB2510-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        MOBILY-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         MOBILY-MNT
abuse-c:        MAAR3-RIPE
created:        2004-10-18T06:22:01Z
last-modified:  2017-10-30T14:35:22Z
source:         RIPE

person:         Mobily RIPE Admin
address:        P.O 69179, Riyadh 11423
phone:          +966 560315751
e-mail:         RIPE-Admin@mobily.com.sa
nic-hdl:        MRA60-RIPE
mnt-by:         MOBILY-MNT
created:        2010-05-09T13:30:24Z
last-modified:  2017-10-30T22:09:37Z
source:         RIPE

person:         Samir Mohamed
address:        Ettihad Etisalat (Mobily)
phone:          +966560315751
nic-hdl:        SM28757-RIPE
mnt-by:         MOBILY-MNT
e-mail:         s.mohamed@mobily.com.sa
created:        2015-01-18T13:13:14Z
last-modified:  2015-01-18T13:13:14Z
source:         RIPE

route:          37.42.0.0/15
descr:          BroadBand-Customer
origin:         AS35819
mnt-by:         MOBILY-MNT
created:        2015-01-28T08:42:53Z
last-modified:  2015-01-28T08:42:53Z
source:         RIPE

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.