inetnum: 220.127.116.11 - 18.104.22.168 netname: LU-ELTRONA-20100528 country: LU org: ORG-EIS12-RIPE admin-c: RS10216-RIPE tech-c: JC8936-RIPE status: ALLOCATED PA mnt-by: RIPE-NCC-HM-MNT mnt-by: MNT-ELTRONA-MNTNER mnt-routes: MNT-ELTRONA-MNTNER notify: email@example.com notify: firstname.lastname@example.org created: 2010-05-28T09,11,02Z last-modified: 2016-10-06T13,54,01Z source: RIPE organisation: ORG-EIS12-RIPE org-name: Eltrona Interdiffusion S.A. org-type: LIR address: 4 - 8 rue de l' Acierie address: L-1112 address: Luxembourg address: LUXEMBOURG phone: +352499466 fax-no: +352499466240 e-mail: email@example.com abuse-c: AR16064-RIPE mnt-ref: MNT-ELTRONA-MNTNER mnt-ref: RIPE-NCC-HM-MNT mnt-by: RIPE-NCC-HM-MNT mnt-by: MNT-ELTRONA-MNTNER created: 2010-04-21T10,21,35Z last-modified: 2016-10-06T13,41,33Z source: RIPE admin-c: AM4880-RIPE person: Jose Canto address: ELTRONA BP 1032 L- 1010 Luxembourg phone: +352 4994661 nic-hdl: JC8936-RIPE mnt-by: MNT-ELTRONA-MNTNER created: 2016-10-06T13,51,02Z last-modified: 2016-10-06T13,51,02Z source: RIPE person: Rene Summer address: e-mail: firstname.lastname@example.org phone: +352499466 nic-hdl: RS10216-RIPE mnt-by: MNT-ELTRONA-MNTNER created: 2010-05-05T06,54,26Z last-modified: 2010-05-05T06,54,26Z source: RIPE route: 22.214.171.124/21 descr: Eltrona Telecom S.A. origin: AS8632 mnt-by: LU-ONLINE created: 2014-06-06T14,10,22Z last-modified: 2014-06-06T14,10,22Z 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.