AS10697 Interlink S.R.L.
2800:820::/32 - INS3
inetnum: 2800:820::/32 status: allocated owner: Interlink S.R.L. city: Rosario country: AR owner-c: INS3 tech-c: INS3 abuse-c: INS3 inetrev: 2800:820::/32 nserver: NS1.INTERLINK.COM.AR nserver: NS2.INTERLINK.COM.AR created: 2011-04-14 changed: 2011-04-14 source: LACNIC
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.