What is is a private IP Address, which is used usually to connect networking devices and equipments over private networks. These IP Addresses are not unique in nature which means that they can be repeated on different networks across the world. However, they should not be repeated within the network, as with any other IP Address.

What is a Private Network and Private IP Address

Early network design, when global end-to-end connectivity was envisioned for communications with all Internet hosts, intended that IP addresses be uniquely assigned to a particular computer or device. However, it was found that this was not always necessary as private networks developed and public address space needed to be conserved.

Computers not connected to the Internet, such as factory machines, routers and other networking rquipments that communicate only with each other via TCP/IP, need not have globally-unique IP addresses. Three ranges of IPv4 addresses for private networks have been reserved. These addresses are not routed on the Internet and thus their use need not be coordinated with an IP address registry.

Today, when needed, such private networks typically connect to the Internet through network address translation (NAT).

IANA-reserved private IPv4 network ranges
Start End No. of addresses
24-bit Block (/8 prefix, 1 × A) 16777216
20-bit Block (/12 prefix, 16 × B) 1048576
16-bit Block (/16 prefix, 256 × C) 65536

. Router Login and Password Details

Many of the popular manufacturers of broadband routers and modems use for the configuration of their devices on the user computer. A list of some of the popular brands of the broadband routers and modems is given below. Please go through the list to find the IP Address and the broadband routers using it. You will also find the default username and passwords used for it.