inetnum: 188.8.131.52/20 aut-num: AS28586 abuse-c: CBDSA owner: BANCO BRADESCO SA ownerid: 60.746.948/0001-12 responsible: Cristiano Bezerra dos Santos country: BR owner-c: CBDSA tech-c: CBDSA inetrev: 184.108.40.206/20 nserver: ns1.bradesco.com.br nsstat: 20170819 AA nslastaa: 20170819 nserver: ns2.bradesco.com.br nsstat: 20170819 AA nslastaa: 20170819 created: 20140512 changed: 20140512 nic-hdl-br: CBDSA person: Cristiano Bezerra dos Santos e-mail: firstname.lastname@example.org country: BR created: 20060705 changed: 20170511
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.