188.8.131.52/21 - RO-IPV4-20120313
inetnum: 184.108.40.206 - 220.127.116.11 netname: RO-IPV4-20120313 country: RO org: ORG-ATAS1-RIPE admin-c: CH-RIPE tech-c: CH-RIPE status: ALLOCATED PA notify: email@example.com mnt-by: RIPE-NCC-HM-MNT mnt-by: RO-MNT mnt-domains: RO-MNT mnt-routes: RO-MNT created: 2012-08-02T12:06:17Z last-modified: 2018-06-08T07:48:59Z source: RIPE organisation: ORG-ATAS1-RIPE org-name: IPv4 Management SRL org-type: LIR address: BASARABILOR BLV. BL. C2 SC. D AP. 106 address: RO-115300 address: CURTEA DE ARGES, JUD. ARGES address: ROMANIA phone: +40725224444 fax-no: +40212228083 e-mail: firstname.lastname@example.org admin-c: CH-RIPE admin-c: CH-RIPE admin-c: CH-RIPE abuse-c: IN1080-RIPE mnt-ref: RIPE-NCC-HM-MNT mnt-ref: RO-MNT mnt-by: RIPE-NCC-HM-MNT mnt-by: RO-MNT created: 2004-04-17T11:49:39Z last-modified: 2016-06-02T06:47:55Z source: RIPE person: Cristian Haja address: Basarabilor, Bl C2, Sc D, Et 2, Ap 106, address: Curtea de Arges, Arges, Romania, RO-115300 phone: +40.725224444 fax-no: +40.212228083 e-mail: email@example.com nic-hdl: CH-RIPE notify: firstname.lastname@example.org mnt-by: CH-MNT created: 2009-05-10T17:05:36Z last-modified: 2017-05-30T16:35:51Z source: RIPE route: 18.104.22.168/21 descr: SC CAROSYSTEM SRL origin: AS48828 mnt-by: CAROSYSTEM-MNT created: 2012-08-08T06:31:26Z last-modified: 2012-08-08T06:31:26Z 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.