18.104.22.168/24 - EDP27
inetnum: 187.73.128/20 status: allocated owner: ITIBR - Instituto de Tecnologia Informacao Brasil city: Santana de Parnaiba country: BR owner-c: EDP27 tech-c: EDP27 abuse-c: EDP27 inetrev: 187.73.132/24 nserver: DNS1.CTITECH.NET.BR nserver: DNS2.CTITECH.NET.BR inetrev: 187.73.128/22 nserver: DNS1.CTITECH.NET.BR nserver: DNS2.CTITECH.NET.BR created: 2009-07-20 changed: 2013-03-07 source: LACNIC
IP Addresses in this 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.