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inetnum: 184.108.40.206 - 220.127.116.11 netname: UKPOIT-NET descr: Royal Mail Group Limited org: ORG-BR23-RIPE country: GB admin-c: HM4239-RIPE tech-c: HM4239-RIPE status: LEGACY remarks: For information on "status:" attribute read https://www.ripe.net/data-tools/db/faq/faq-status-values-legacy-resources mnt-by: BTNET-MNT mnt-routes: BTNET-MNT created: 2003-12-09T13:47:16Z last-modified: 2015-05-05T01:59:43Z source: RIPE organisation: ORG-BR23-RIPE org-name: Royal Mail Group Limited org-type: OTHER address: BT address: Spire Walk address: Derby Road address: Chesterfield address: S41 7RS address: GB e-mail: firstname.lastname@example.org mnt-ref: BTNET-MNT mnt-by: BTNET-MNT created: 2012-11-19T14:07:51Z last-modified: 2012-12-21T09:58:43Z source: RIPE person: HOST MASTER address: pp 45 Royal Mail address: 2nd Floor, Spire Walk address: Chesterfield address: Derbyshire S41 7RS phone: +44 1246 254954 nic-hdl: HM4239-RIPE mnt-by: BTNET-MNT created: 2013-05-20T09:01:31Z last-modified: 2013-05-20T09:01:31Z source: RIPE route: 18.104.22.168/16 descr: UKPOIT-NET origin: AS2856 mnt-by: BTNET-MNT created: 2012-04-27T10:12:22Z last-modified: 2012-04-27T10:12:22Z 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.