inetnum: 201.245.170/24 status: reallocated owner: Emsitel Ltda ownerid: CO-EMLT-LACNIC responsible: Ivan Ramirez address: Av 3., 11, 26 Of. 404/5 address: 9999 - Cucuta - No country: CO phone: +57 7 5714906  owner-c: IVR tech-c: IVR abuse-c: IVR created: 20060328 changed: 20060328 inetnum-up: 201.245/16 nic-hdl: IVR person: Ivan Ramirez e-mail: EMSITEL@HOTMAIL.COM address: Av. 3, 11, 26 Of. 404/5 address: 9999 - Cucuta - No country: CO phone: +57 7 5714906  created: 20031118 changed: 20040114
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.