inet6num: 2001,7b8,,/29 netname: NL-BIT-20020405 country: NL org: ORG-BIT1-RIPE admin-c: BIT-RIPE tech-c: BIT-RIPE mnt-by: RIPE-NCC-HM-MNT mnt-by: BIT-MNT mnt-routes: BIT-MNT status: ALLOCATED-BY-RIR notify: firstname.lastname@example.org created: 2015-05-13T06,59,24Z last-modified: 2017-07-27T14,28,04Z source: RIPE organisation: ORG-BIT1-RIPE org-name: BIT BV org-type: LIR address: Postbus 536 address: 6710 BM address: BM EDE address: NETHERLANDS phone: +31318648688 fax-no: +31318643334 e-mail: email@example.com abuse-mailbox: firstname.lastname@example.org admin-c: JL5393-RIPE admin-c: TEUN-RIPE admin-c: AB2298-RIPE admin-c: SSM13-RIPE mnt-ref: BIT-MNT mnt-ref: RIPE-NCC-HM-MNT mnt-by: RIPE-NCC-HM-MNT mnt-by: BIT-MNT abuse-c: BBAR1-RIPE created: 2004-04-17T11,40,08Z last-modified: 2017-07-27T14,28,05Z source: RIPE role: BIT B.V. Technical Role Account address: BIT B.V. address: Galileilaan 19 address: 6716 BP EDE address: The Netherlands phone: +31 318 648688 fax-no: +31 318 643334 e-mail: email@example.com abuse-mailbox: firstname.lastname@example.org admin-c: AB2298-RIPE admin-c: TEUN-RIPE tech-c: AB2298-RIPE tech-c: TEUN-RIPE nic-hdl: BIT-RIPE remarks: Please send abuse complaints ONLY to email@example.com remarks: Technical issues can be directed to firstname.lastname@example.org remarks: Peering requests go to email@example.com remarks: Peering details can be found at http,//noc.bit.nl mnt-by: BIT-MNT created: 1970-01-01T00,00,00Z last-modified: 2013-05-21T08,36,47Z source: RIPE route6: 2001,7b8,,/29 descr: NL-BIT-20020405 descr: BIT bv, The Netherlands origin: AS12859 notify: firstname.lastname@example.org mnt-by: BIT-MNT created: 2015-05-15T07,47,08Z last-modified: 2015-05-15T07,47,08Z 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.