AS28580 CILNET Comunicacao e Informatica LTDA.
220.127.116.11/20 - IAN
inetnum: 187.84.0/20 status: allocated owner: iNETVR Internet Service Provider Ltda. city: Salto country: BR owner-c: IAN tech-c: DZA2 abuse-c: DZA2 inetrev: 187.84.15/24 nserver: SERVER2.FASTERNET.COM.BR nserver: SERVER3.FASTERNET.COM.BR created: 2009-07-24 changed: 2013-04-02 source: LACNIC
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.