inetnum: 18.104.22.168/20 aut-num: AS1916 abuse-c: SIC128 owner: Associação Rede Nacional de Ensino e Pesquisa ownerid: 03.508.097/0001-36 responsible: Nelson Simões Silva owner-c: RCO217 tech-c: RCO217 inetrev: 22.214.171.124/24 nserver: bellana.nc-rj.rnp.br nsstat: 20170305 AA nslastaa: 20170305 nserver: teyr.na-cp.rnp.br nsstat: 20170305 AA nslastaa: 20170305 inetrev: 126.96.36.199/24 nserver: teyr.na-cp.rnp.br nsstat: 20170303 AA nslastaa: 20170303 nserver: bellana.nc-rj.rnp.br nsstat: 20170303 AA nslastaa: 20170303 nserver: lua.na-df.rnp.br nsstat: 20170303 AA nslastaa: 20170303 created: 20000215 changed: 20130307 nic-hdl-br: RCO217 person: RNP - Centro de Engenharia e Operações created: 20060406 changed: 20160801 nic-hdl-br: SIC128 person: Security Incidents Response Center created: 20020417 changed: 20050309
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.