inetnum: 2800:950::/32 status: allocated aut-num: N/A owner: EMPRESAS MUNICIPALES DE CALI E.I.C.E. E.S.P. ownerid: CO-EMCA2-LACNIC responsible: Jorge Garcia address: carrera 73 #14c-00, 73, 14c-00 address: 04 - Cali - VA country: CO phone: +57 2 8998121  owner-c: DBT tech-c: DBT abuse-c: DBT created: 20110722 changed: 20110722 nic-hdl: DBT person: Armandy Trujillo - Jorge Andres Garcia e-mail: lacnic.emcali@EMCALI.NET.CO address: Cl 14C CRA 73-00 TELEFONICA LIMONAR, 572, 8998218 address: 760033 - Cali - VA country: CO phone: +57 2 8998121  created: 20040305 changed: 20170119
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.