Your global IP address is: 38.107.191.84
This page contains basic information that you may find useful when setting up a home or private network. All of the technical information is for IPv4 based IP addresses.
Private IPs
There are a number of IP address ranges reserved by ICANN specifically for private use. For example, these address ranges may be used for a home network where multiple computers are behind a firewall or router. This enables you to only use a single ip to connect to the internet using a feature in your router called NAT (Network Address Translation).
Private IP address ranges:
| Block | Range |
| 10.0.0.0/8 | 10.0.0.0 to 10.255.255.255 |
| 172.16.0.0/12 | 172.16.0.0 to 172.31.255.255 |
| 192.168.0.0/16 | 192.168.0.0 to 192.168.255.255 |
DNS
Domain Name System (DNS) servers are essential to the successful operation of most all computers on the internet. Most ISPs (Internet Service Providers) will provide you with a local DNS server that they run for you to use. Alternatively, there are a number of public DNS servers that you may use if you prefer or if you simply do not know the IP of a local DNS server. Below are a number of such public DNS servers that you may use.
Public DNS servers:
| IP Address |
| 4.2.2.1 |
| 4.2.2.2 |
| 4.2.2.3 |
| 4.2.2.4 |
| 4.2.2.5 |
| 4.2.2.6 |
Typical Home Network Setup
There are many different ways to configure a home network. One may use DHCP to automatically assign all of these settings, and if you get a router from your ISP it may already come preconfigured to do just that. In any case, a typical home network setup not necessarily using DHCP may look like this:
| Setting | Value |
| Network | 192.168.0.0/24 |
| Netmask | 255.255.255.0 |
| Gateway | 192.168.0.1 |
| Usable IPs | 192.168.0.2 - 192.168.0.254 |
| Computer 1 | 192.168.0.100 |
| Computer 2 | 192.168.0.101 |
| DNS 1 | 4.2.2.1 |
| DNS 2 | 4.2.2.2 |
In this example, we are using an 8-bit subnet, which means that we will get a total of 254 usable IPs. Don't worry if you do not know what this means. For the technically curious, IPv4 addresses are 32-bits, the 24 in the network block notation refers to the subnet mask, 32-24=8, 2^8=256, the first and last IPs are reserved, leaving 254 usable addresses. The gateway or router is generally set to the first IP, in this case 192.168.0.1. The netmask specifies which part of the IP address are similar on the subnet. In this case, 255.255.255.0 (255 being all 1s in binary), marks the part '192.168.0.' as the numbers that do not change. Computers 1 and 2 are examples of IP addresses that one might assign to different computers on their network. The usable IP range excludes the gateway IP to demonstrate the number of IPs that one may choose to use for any device on the network.
