inetnum: 184.108.40.206 - 220.127.116.11 netname: EUDC-Net1 descr: Thermo Fisher Scientific country: GB admin-c: GA5664-RIPE tech-c: GA5664-RIPE status: ASSIGNED PA mnt-by: GA94120-MNT mnt-lower: GA94120-MNT mnt-routes: GA94120-MNT created: 2014-07-29T14:17:47Z last-modified: 2014-07-29T14:23:31Z source: RIPE person: Global Network Services Admin address: Thermo Fisher Scientific address: 600 Business Centre Drive address: Pittsburgh address: PA15068 address: USA phone: +1 412 490 8100 e-mail: email@example.com nic-hdl: GA5664-RIPE mnt-by: GA94120-MNT created: 2011-01-21T14:56:58Z last-modified: 2011-01-21T14:56:58Z source: RIPE
IP Addresses in this 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.