inetnum: 18.104.22.168 - 22.214.171.124 netname: NATS-UK org: ORG-NRL5-RIPE descr: 4000 Parkway descr: Whiteley descr: Fareham descr: Hampshire descr: PO15 7FL country: GB admin-c: AG12013-RIPE tech-c: AG12013-RIPE status: LEGACY mnt-by: RIPE-NCC-LEGACY-MNT mnt-by: uk-natsen-1-mnt created: 2002-09-16T12,56,25Z last-modified: 2017-10-17T11,06,14Z source: RIPE organisation: ORG-NRL5-RIPE org-name: NATS (En Route) Ltd org-type: LIR address: Corporate and Technical Centre, 4000 Parkway, Whiteley, address: PO15 7FL address: Fareham, Hants address: UNITED KINGDOM e-mail: firstname.lastname@example.org admin-c: MG21995-RIPE tech-c: MG21995-RIPE abuse-c: AR35437-RIPE mnt-ref: uk-natsen-1-mnt mnt-by: RIPE-NCC-HM-MNT mnt-by: uk-natsen-1-mnt mnt-ref: RIPE-NCC-HM-MNT created: 2016-02-17T10,11,02Z last-modified: 2017-10-17T10,33,32Z source: RIPE phone: +4401489616191 person: Andy Garlick address: 4000 Parkway address: Whiteley address: Fareham address: Hampshire address: PO15 7FL address: GB phone: +44 1489 444489 e-mail: email@example.com nic-hdl: AG12013-RIPE mnt-by: ENERGIS-MNT created: 2011-03-29T16,14,40Z last-modified: 2011-03-29T16,14,40Z source: RIPE route: 126.96.36.199/16 descr: NATS origin: AS2529 mnt-by: ENERGIS-MNT created: 2014-03-26T16,21,40Z last-modified: 2014-03-26T16,21,40Z source: RIPE route: 188.8.131.52/16 descr: NATS origin: AS5388 mnt-by: ENERGIS-MNT created: 2002-09-16T12,56,25Z last-modified: 2011-03-30T08,16,49Z 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.