AS1916 Associação Rede Nacional de Ensino e Pesquisa
18.104.22.168/20 - RCO6
inetnum: 200.18.16/20 status: assigned owner: Associação Rede Nacional de Ensino e Pesquisa city: Rio de Janeiro country: BR owner-c: RCO6 tech-c: RCO6 abuse-c: RCO6 created: 2000-02-16 changed: 2013-03-06 source: LACNIC
IP address subranges within this IP range
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.