:: How to use a static IP range ::

If you have ordered a range of IP addresses for use with your broadband connection then you should review this article.
Our networks use Classless Inter-Domain Routing (CIDR) for IP address ranges assigned to broadband connections. The range of IP addresses must have at least the following attributes in order to function with the rest of the Internet:

> A network address
This is the start of your IP address range
> A network mask (aka "subnet mask")
This binary number (written as a "dotted decimal number" so that it's humanly readable) 'masks off' the rest of the Internet so that routers will know which tiny section of IP addresses are on your end of your broadband connection
> A gateway address
This provides a route out of your subnet and onto the rest of the Internet; yes, sometimes networking terminology actually makes sense!
> A broadcast address
This allows IP information to be sent to all hosts within your subnet


As you can see at least 3 IP addresses will be required in order for the IP range to function with the rest of the Internet. The remaining IP addresses can be assigned to hosts on your network including your broadband router, firewall and servers. So a /29 will give you 8 IP addresses of which 5 are usable and a /28 will give you 16 IP addresses of which 13 are usable. Here's how we'll assign your IP addresses if you have a standard /29 range with 8 IPs:

1) The lowest value is the network address (eg. 84.45.100.32); do not use this address.
2) The next value is the router address which will assigned to your broadband router (eg. 84.45.100.33); do not use this address as a host address.
3) The next values can be assigned to your hosts
eg. 84.45.100.34
...up to...
eg. 84.45.100.38 (or 84.45.100.46 for a /28 range with 16 IPs)
4) The final value (eg. 84.45.100.39, or 84.45.100.47 for a /28 range with 16 IPs) is the broadcast address; do not use this address.
5) Your subnet mask value for your hosts will either be 255.255.255.248 for a /29 with 8 IPs or 255.255.255.240 for a /28 with 16 IPs.
6) Your default gateway for your hosts will be the second IP address in your range, the one assigned to your broadband router (eg. 84.45.100.33)

There are many free "IP calc" websites on the Internet which will help you to work out or verify your IP range, but feel free to contact 123vISP Support if you require specific advice.

:: DNS Servers note ::
DNS server settings should be automatically assigned to your router as the best DNS servers depend on the type and location of your broadband termination point. If you want to specify the DNS server settings manually then please login first automatically and note the DNS servers assigned to your router; feel free to then manually specify these in your router. Please note that the DNS servers are dynamic and may change without notice.

Please note that when upgrading from NAT to No-NAT 8 or No-NAT 16 you will be allocated a completely unique and different range of IPs than those previously allocated.

Please bear in mind reconfiguration of the router will be required.