inetnum: 148.204/16 status: assigned aut-num: N/A owner: Instituto Politecnico Nacional ownerid: MX-IPNA-LACNIC responsible: I.S.C. Adrian Contreras Martinez address: Miguel Othon de Mendizabal, S/N, Col. La Escalera address: 07320 - Gustavo A. Madero - CX country: MX phone: +52 55 57296000  owner-c: MLC3 tech-c: MLC3 abuse-c: MLC3 inetrev: 148.204/16 nserver: DNS2.IPN.MX nsstat: 20170822 AA nslastaa: 20170822 nserver: DNS3.IPN.MX nsstat: 20170822 AA nslastaa: 20170822 nserver: DNS1.IPN.MX nsstat: 20170822 AA nslastaa: 20170822 created: 19920624 changed: 20130419 nic-hdl: MLC3 person: Manuel De la Cruz Cruz e-mail: mdelacruz@IPN.MX address: Ed. Central Inteligente de Cómputo, Av. Juan de Dios Bátiz, S/N, Unidad Profesional Adolfo Lopez Mateos address: 07738 - Gustavo A. Madero - CX country: MX phone: +52 55 57296300  created: 20110309 changed: 20170107
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.