126.96.36.199/21 - NOMINET-DCA
inetnum: 188.8.131.52 - 184.108.40.206 netname: NOMINET-DCA descr: Nominet UK country: GB admin-c: NMUK-RIPE tech-c: NMUK-RIPE status: ASSIGNED PA mnt-by: NOMUK-RIPE-MNT mnt-lower: NOMUK-RIPE-MNT mnt-routes: NOMUK-RIPE-MNT created: 2012-05-09T13:00:15Z last-modified: 2012-05-09T13:00:15Z source: RIPE role: Nominet UK Admin address: Nominet UK address: Minerva House address: Edmund Halley Road address: Oxford Science Park address: Oxford address: OX4 4DQ address: United Kingdom phone: +44 1865 332211 fax-no: +44 1865 332299 e-mail: firstname.lastname@example.org admin-c: DS3704-RIPE tech-c: DS3704-RIPE nic-hdl: NMUK-RIPE notify: email@example.com abuse-mailbox: firstname.lastname@example.org mnt-by: NOMUK-RIPE-MNT created: 1970-01-01T00:00:00Z last-modified: 2013-05-14T16:13:20Z source: RIPE route: 220.127.116.11/21 descr: Nominet origin: AS8683 mnt-by: NOMUK-RIPE-MNT mnt-routes: NOMUK-RIPE-MNT mnt-lower: NOMUK-RIPE-MNT created: 2012-05-09T14:34:12Z last-modified: 2012-05-09T14:34:12Z source: RIPE
IP address subranges within this IP range
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.