inetnum: 2001:13e8::/32 status: allocated aut-num: N/A owner: Cooperativa Telefonica de V.G.G. Ltda. ownerid: AR-CTVL-LACNIC responsible: Conrado Osvaldo Molina address: Avenida Mitre, 1028, address: 2124 - Villa Gobernador Galvez - SF country: AR phone: +54 341 4921299  owner-c: EFB tech-c: EFB abuse-c: EFB inetrev: 2001:13e8::/32 nserver: DNS-1.COOPVGG.COM.AR nsstat: 20170413 AA nslastaa: 20170413 nserver: DNS-2.COOPVGG.COM.AR nsstat: 20170413 AA nslastaa: 20170413 created: 20051007 changed: 20170309 nic-hdl: EFB person: Edgar Fernando Balbastro e-mail: sistemas@TELVGG.COOP address: Avenida Mitre, 1028, address: 2124 - Villa Gobernador Galvez - SF country: AR phone: +54 341 4921299  created: 20040810 changed: 20050929
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.