inet6num: 2a02:26c8::/32 netname: PT-CABOVISAO-20101021 country: PT org: ORG-Ctpc1-RIPE admin-c: JR2638-RIPE tech-c: JR2638-RIPE tech-c: LP1252-RIPE status: ALLOCATED-BY-RIR mnt-by: RIPE-NCC-HM-MNT mnt-by: AS13156-MNT mnt-lower: AS13156-MNT mnt-routes: AS13156-MNT notify: firstname.lastname@example.org created: 2010-10-21T13:53:09Z last-modified: 2018-02-12T09:50:04Z source: RIPE organisation: ORG-Ctpc1-RIPE org-name: NOWO COMMUNICATIONS, S.A. org-type: LIR address: Alameda dos Oceanos, LT 2.11.01 E EdifÃcio Lisboa ? Parque das NaÃ§Ãµes address: 1998-035 address: Lisboa address: PORTUGAL phone: +351210801080 fax-no: +351210801005 e-mail: email@example.com abuse-c: AR13679-RIPE admin-c: JF1169-RIPE admin-c: AL3206-RIPE admin-c: JR2638-RIPE admin-c: LP1252-RIPE mnt-ref: AS13156-MNT mnt-ref: RIPE-NCC-HM-MNT mnt-ref: MNT-JR2638-RIPE mnt-by: RIPE-NCC-HM-MNT mnt-by: AS13156-MNT created: 2004-04-17T11:48:50Z last-modified: 2018-02-06T18:12:00Z source: RIPE person: Jose Ramalho address: Lugar de Pocos address: Palmela address: Portugal phone: +351210801080 fax-no: +351210801004 e-mail: firstname.lastname@example.org remarks: Network Administrator nic-hdl: JR2638-RIPE created: 2007-06-12T14:22:32Z last-modified: 2017-10-30T21:55:27Z mnt-by: RIPE-NCC-LOCKED-MNT source: RIPE person: Luis Pacheco address: Lugar de Pocos address: Palmela address: Portugal phone: +351210801080 fax-no: +351210801004 e-mail: email@example.com nic-hdl: LP1252-RIPE remarks: System Administrator created: 2003-11-07T14:08:04Z last-modified: 2017-10-30T21:46:09Z mnt-by: RIPE-NCC-LOCKED-MNT source: RIPE route6: 2a02:26c8::/32 descr: NOWO COMMUNICATIONS, S.A. descr: Internet Service Provider origin: AS13156 remarks: IMPORTANT: To report intrusion attempts, hacking, remarks: IMPORTANT: spamming, or other unaccepted behavior remarks: IMPORTANT: by a NOWO customer, please remarks: IMPORTANT: send a message to firstname.lastname@example.org mnt-by: AS13156-MNT created: 2011-06-09T16:01:12Z last-modified: 2018-02-12T09:48:07Z 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.