inet6num: 2a00,1d08,,/32 netname: DE-WEBMATIC-20100310 country: DE org: ORG-WKG1-RIPE admin-c: TK185-RIPE tech-c: TK185-RIPE status: ALLOCATED-BY-RIR mnt-by: RIPE-NCC-HM-MNT mnt-by: WMT-MNT mnt-routes: WMT-MNT notify: email@example.com created: 2010-03-10T10,19,41Z last-modified: 2016-12-16T13,12,10Z source: RIPE organisation: ORG-WKG1-RIPE org-name: Webmatic Kommunikations GmbH org-type: LIR address: Sixtistr. 16a address: 06217 address: Merseburg address: GERMANY phone: +49 3461 2899330 fax-no: +49 3461 28993388 e-mail: firstname.lastname@example.org admin-c: WMT1-RIPE admin-c: MB1199-RIPE admin-c: TK185-RIPE mnt-ref: WMT-MNT mnt-ref: RIPE-NCC-HM-MNT mnt-by: RIPE-NCC-HM-MNT mnt-by: WMT-MNT abuse-c: WMT1-RIPE created: 2004-04-17T11,13,33Z last-modified: 2016-12-16T13,12,21Z source: RIPE person: Thomas Krause address: Webmatic Kommunikations GmbH address: Sixtistr. 16a address: D-06217 Merseburg address: Germany phone: +49 3461 2899330 fax-no: +49 3461 28993388 e-mail: email@example.com nic-hdl: TK185-RIPE notify: firstname.lastname@example.org mnt-by: WMT-MNT created: 1970-01-01T00,00,00Z last-modified: 2006-09-06T13,47,46Z source: RIPE route6: 2a00,1d08,,/32 descr: Webmatic Kommunikations GmbH descr: WMT-IPv6-BLOCK-A origin: AS13003 mnt-by: WMT-MNT created: 2010-06-01T11,15,52Z last-modified: 2010-06-01T11,15,52Z source: RIPE
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.