inet6num: 2a01,380,,/32 netname: NL-VERSATEL-20070522 country: NL org: ORG-VT4-RIPE admin-c: VT1029-RIPE tech-c: VT1029-RIPE status: ALLOCATED-BY-RIR mnt-by: RIPE-NCC-HM-MNT mnt-by: AS13127-MNT mnt-routes: AS13127-MNT mnt-domains: AS13127-MNT notify: email@example.com created: 2007-05-22T15,23,37Z last-modified: 2017-07-21T08,06,47Z source: RIPE organisation: ORG-VT4-RIPE org-name: Tele 2 Nederland B.V. org-type: LIR address: Wisselwerking 58 address: 1112 XS address: Diemen address: NETHERLANDS phone: +31207501000 fax-no: +31207502001 e-mail: firstname.lastname@example.org admin-c: RH3392-RIPE admin-c: RvdK1-RIPE admin-c: VT1029-RIPE mnt-ref: AS13127-MNT mnt-ref: RIPE-NCC-HM-MNT mnt-by: RIPE-NCC-HM-MNT mnt-by: AS13127-MNT abuse-mailbox: email@example.com abuse-c: VT1029-RIPE created: 2004-04-17T11,43,51Z last-modified: 2017-07-21T08,06,49Z source: RIPE role: VT HOSTMASTER address: Wisselwerking 58 address: 1112XS Diemen address: The Netherlands e-mail: firstname.lastname@example.org admin-c: RH3392-RIPE tech-c: DZ1291-RIPE tech-c: RH3392-RIPE tech-c: JB6646-RIPE nic-hdl: VT1029-RIPE remarks: This is the Versatel hostmaster role remarks: Please direct all queries to this role and *not* to person objects notify: email@example.com abuse-mailbox: firstname.lastname@example.org remarks: abuse-mailbox, email@example.com remarks: updated by RIPE NCC remarks: multiple abuse-mailbox attributes causing operational problems mnt-by: AS13127-MNT created: 2002-05-23T12,58,47Z last-modified: 2014-08-29T07,19,44Z source: RIPE route6: 2a01,380,,/32 descr: Tele2NL-IPV6block origin: AS13127 mnt-by: AS13127-MNT created: 2009-10-22T08,02,06Z last-modified: 2009-10-22T08,03,13Z 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.