inetnum: 188.8.131.52/21 aut-num: AS262271 abuse-c: EMMFE12 owner: R. C. A. Sistemas Ltda. ownerid: 09.072.237/0001-52 responsible: Aloizio Mota de Castro country: BR owner-c: EMMFE12 tech-c: EMMFE12 inetrev: 184.108.40.206/21 nserver: dns1.rcasistemas.net.br nsstat: 20170823 AA nslastaa: 20170823 nserver: dns2.rcasistemas.net.br [lame - not published] nsstat: 20170823 ERR nslastaa: 20170611 created: 20120619 changed: 20131001 nic-hdl-br: EMMFE12 person: Emerson Moisés Ferreira e-mail: firstname.lastname@example.org country: BR created: 20130923 changed: 20131125
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.