inet6num: 2001,1ac8,,/32 netname: BG-MTELNET-20040331 country: BG org: ORG-MN1-RIPE admin-c: AP3645-RIPE tech-c: VGK3-RIPE status: ALLOCATED-BY-RIR mnt-by: RIPE-NCC-HM-MNT mnt-by: AS12716-MNT mnt-routes: AS12716-MNT notify: email@example.com created: 2004-03-31T09,37,01Z last-modified: 2017-01-04T13,54,39Z source: RIPE organisation: ORG-MN1-RIPE org-name: MOBILTEL EAD org-type: LIR address: 1 Kukush Str. bld. M7, fl. 6 address: 1345 address: Sofia address: BULGARIA phone: +359 88 8088088 phone: +35 988 1010 fax-no: +359 88 110 3970 e-mail: firstname.lastname@example.org abuse-c: AR14215-RIPE admin-c: GG15027-RIPE admin-c: BH3761-RIPE admin-c: MG14247-RIPE mnt-ref: AS12716-MNT mnt-ref: RIPE-NCC-HM-MNT mnt-by: RIPE-NCC-HM-MNT mnt-by: AS12716-MNT created: 2004-04-17T11,01,14Z last-modified: 2017-01-04T13,55,19Z source: RIPE person: Alexander Petrov address: MobilTel EAD address: 2 Kukush Str. address: 1000 Sofia address: Bulgaria phone: +359 888 618 769 fax-no: +359 888 500 032 e-mail: email@example.com nic-hdl: AP3645-RIPE mnt-by: ROUTE-12716-MNT created: 2004-03-10T09,40,07Z last-modified: 2011-09-03T05,43,18Z source: RIPE person: Vesselin G. Kotarov address: M1 building address: 1, Kukush str. address: Sofia address: Bulgaria mnt-by: VGK3-MNT phone: +359882203546 fax-no: +359888500032 e-mail: firstname.lastname@example.org abuse-mailbox: email@example.com nic-hdl: VGK3-RIPE created: 1970-01-01T00,00,00Z last-modified: 2008-02-19T18,26,30Z source: RIPE route6: 2001,1ac8,,/32 descr: Mobiltel EAD. origin: AS12716 mnt-by: AS12716-MNT created: 2012-03-07T13,10,02Z last-modified: 2012-03-07T13,10,02Z 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.