inet6num: 2a00,800,,/25 netname: SE-SWIPNET-20080128 country: SE org: ORG-TA44-RIPE admin-c: SWIP-RIPE tech-c: SWIP-RIPE status: ALLOCATED-BY-RIR notify: firstname.lastname@example.org mnt-by: RIPE-NCC-HM-MNT mnt-by: SWIPNET-LIR-MNT mnt-lower: SWIPNET-LIR-MNT mnt-routes: SWIPNET-LIR-MNT created: 2008-01-28T12,35,56Z last-modified: 2016-05-24T05,17,41Z source: RIPE organisation: ORG-TA44-RIPE org-name: Tele2 Sverige AB org-type: LIR address: Box 62 address: 16494 address: Kista address: SWEDEN phone: +46856264008 fax-no: +46856264210 e-mail: email@example.com admin-c: SWIP-RIPE admin-c: NEKA-RIPE admin-c: ROS98-RIPE tech-c: SWIP-RIPE abuse-c: SWIP-RIPE mnt-ref: RIPE-NCC-HM-MNT mnt-ref: SWIPNET-LIR-MNT mnt-by: RIPE-NCC-HM-MNT mnt-by: SWIPNET-LIR-MNT created: 2004-04-17T12,04,53Z last-modified: 2016-05-24T05,17,27Z source: RIPE role: Swipnet Staff address: Tele2 AB/Swedish IP Network DNS/IP Registry LIR/Local Internet Registry Borgarfjordsgatan 16 Box 62 S-16494 Kista SWEDEN phone: +46 8 5626 40 00 fax-no: +46 8 5626 42 10 e-mail: firstname.lastname@example.org abuse-mailbox: email@example.com remarks: The database object describes the staff of SWIPNET LIR. admin-c: NEKA-RIPE admin-c: ROSI3-RIPE tech-c: NEKA-RIPE tech-c: ROSI3-RIPE nic-hdl: SWIP-RIPE mnt-by: SWIPNET-LIR-MNT notify: firstname.lastname@example.org created: 2002-03-21T14,25,04Z last-modified: 2016-10-20T10,01,27Z source: RIPE route6: 2a00,800,,/25 descr: Tele2 IPv6 block In case of improper use originating from our network, please mail or origin: AS1257 notify: email@example.com notify: firstname.lastname@example.org mnt-by: SWIPNET-LIR-MNT created: 2008-06-03T06,28,37Z last-modified: 2010-12-23T07,59,42Z 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.