91.93.128.0/23

inetnum:         91.93.128.128 - 91.93.128.255
netname:         idea_Internet_2
descr:           idea Internet
country:         TR
admin-c:         YB299-RIPE
tech-c:          NT674-RIPE
status:          ASSIGNED PA
mnt-by:          mnt-teletek
created:         2008-07-12T09:30:23Z
last-modified:   2008-07-12T09:30:23Z
source:          RIPE

person:          Network Admin
address:         Global Iletisim Hizmetleri A.S.
address:         Ayazma Dere Cad. Aksit Plaza No:12/1
address:         Fulya, Besiktas, Istanbul, Turkey
phone:           +90 212 310 22 00
e-mail:          osman.cakir@superonline.net
mnt-by:          MNT-TELLCOM
nic-hdl:         NT674-RIPE
created:         2006-03-29T08:29:16Z
last-modified:   2016-04-05T11:10:04Z
source:          RIPE

person:          Yunus Bal
address:         Istiklal Cad.Sabri Alisik Sok no:11-4
address:         Beyoglu - Istanbul
phone:           +90 212 243 62 93
e-mail:          yunus@idea.net.tr
nic-hdl:         YB299-RIPE
created:         2005-12-20T14:49:14Z
last-modified:   2016-04-07T07:57:04Z
mnt-by:          RIPE-NCC-LOCKED-MNT
source:          RIPE

route:           91.93.128.0/24
descr:           Global Iletisim Net-4
origin:          as34104
mnt-by:          mnt-teletek
created:         2011-05-16T11:15:00Z
last-modified:   2011-05-16T11:15:00Z
source:          RIPE

route:           91.93.128.0/24
descr:           SOL-Cust
origin:          AS34984
mnt-by:          MNT-TELLCOM
mnt-routes:      MNT-TELLCOM
created:         2014-09-22T11:11:33Z
last-modified:   2014-09-22T11:11:33Z
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.