inetnum: 184.108.40.206 - 220.127.116.11 netname: IT-ICCREA-20110801 country: IT org: ORG-IBS4-RIPE admin-c: ICR13-RIPE tech-c: ICR13-RIPE status: ALLOCATED PA mnt-by: RIPE-NCC-HM-MNT mnt-lower: ICCREA-MNT mnt-routes: ICCREA-MNT notify: email@example.com created: 2011-08-01T14:15:20Z last-modified: 2016-04-14T07:48:37Z source: RIPE organisation: ORG-IBS4-RIPE org-name: ICCREA BANCA SPA org-type: LIR address: ICCREA BANCA SPA address: Maurizio Guarnieri address: via Lucrezia Romana 41-47 address: 00178 ROMA address: ITALY phone: +390672071 fax-no: +390672074580 mnt-ref: RIPE-NCC-HM-MNT mnt-ref: ICCREA-MNT mnt-by: RIPE-NCC-HM-MNT admin-c: DL4564-RIPE admin-c: MG14534-RIPE admin-c: WM1834-RIPE admin-c: PM13593-RIPE e-mail: firstname.lastname@example.org abuse-c: ICR13-RIPE created: 2011-07-06T14:34:55Z last-modified: 2013-05-20T07:35:53Z source: RIPE role: ICCREA-BANCA Contact Role org: ORG-IBS4-RIPE address: ICCREA BANCA SPA address: VIA LUCREZIA ROMANA 41-47 address: I-00178 ROMA (RM) e-mail: email@example.com admin-c: MG14534-RIPE tech-c: DL4564-RIPE tech-c: PM13593-RIPE tech-c: WM1834-RIPE nic-hdl: ICR13-RIPE abuse-mailbox: firstname.lastname@example.org mnt-by: ICCREA-MNT created: 2011-07-12T09:02:21Z last-modified: 2013-05-20T07:35:22Z source: RIPE route: 18.104.22.168/21 descr: ICCREA BANCA SPA origin: AS57144 notify: email@example.com mnt-by: ICCREA-MNT created: 2011-08-02T12:29:33Z last-modified: 2011-08-02T12:29:33Z 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.