inetnum: 18.104.22.168/13 aut-num: AS28573 abuse-c: GRSVI owner: CLARO S.A. ownerid: 40.432.544/0835-06 responsible: CLARO S.A. country: BR owner-c: GRSVI tech-c: GRSVI inetrev: 22.214.171.124/13 nserver: ns7.virtua.com.br nsstat: 20170819 AA nslastaa: 20170819 nserver: ns8.virtua.com.br nsstat: 20170819 AA nslastaa: 20170819 created: 20140602 changed: 20151020 nic-hdl-br: GRSVI person: Grupo de Segurança Vírtua e-mail: firstname.lastname@example.org country: BR created: 20080512 changed: 20090518
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.