Whois Details
inetnum: 187.64.0.0/14 aut-num: AS28573 abuse-c: GRSVI owner: CLARO S.A. ownerid: 40.432.544/0835-06 responsible: CLARO S.A. owner-c: GRSVI tech-c: GRSVI inetrev: 187.64.0.0/18 nserver: ns7.virtua.com.br nsstat: 20170306 AA nslastaa: 20170306 nserver: ns8.virtua.com.br nsstat: 20170306 AA nslastaa: 20170306 inetrev: 187.64.64.0/18 nserver: ns7.virtua.com.br nsstat: 20170307 AA nslastaa: 20170307 nserver: ns8.virtua.com.br nsstat: 20170307 AA nslastaa: 20170307 inetrev: 187.64.128.0/18 nserver: ns7.virtua.com.br nsstat: 20170307 AA nslastaa: 20170307 nserver: ns8.virtua.com.br nsstat: 20170307 AA nslastaa: 20170307 inetrev: 187.64.192.0/18 nserver: ns7.virtua.com.br nsstat: 20170307 AA nslastaa: 20170307 nserver: ns8.virtua.com.br nsstat: 20170307 AA nslastaa: 20170307 inetrev: 187.65.0.0/18 nserver: ns7.virtua.com.br nsstat: 20170305 AA nslastaa: 20170305 nserver: ns8.virtua.com.br nsstat: 20170305 AA nslastaa: 20170305 inetrev: 187.65.64.0/18 nserver: ns7.virtua.com.br nsstat: 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nic-hdl-br: GRSVI person: Grupo de Segurança Vírtua created: 20080512 changed: 20090518
IP address subranges within this IP range
Details
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.