inetnum: 186.154.246/24 status: reallocated owner: EMTEL ownerid: CO-EMTE3-LACNIC responsible: Jeannette Liliana Mendez address: NODO EMTEL, STA, CLARA address: 9999 - POPAYAN - CA country: CO phone: +57 2 8223294  owner-c: JLM3 tech-c: JLM3 abuse-c: JLM3 created: 20120628 changed: 20120628 inetnum-up: 186.154/16 nic-hdl: JLM3 person: Jeannette Liliana Mendez e-mail: lmendez@EMTEL.NET.CO address: NODO EMTEL, SAN, CLARA address: 9999 - POPAYAN - CA country: CO phone: +57 2 8223294  created: 20050902 changed: 20060421
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.