Broadband IP Addresses & DNS

WAN IP Address

Gamma provides a single fixed IP address on all connections, free of charge.

Routed IP Address / Non-NAT Configurations

Where the end customer does not want to use NAT and needs to assign public IP addresses to machines on their LAN, Gamma will provide the following routed IP subnets:

Subnet SizeUsable IPs
42
86
1614

Please contact Exeltel Support for charges. [email protected] or call us on 0333 004 0180

Do I Need Routed IPs?

You need routed IPs if you are running a complex set up and have multiple instances of the same service, such as multiple HTTPS servers or you have other network services that do not support being configured behind a NATed router.


In this instance, NAT is disabled on the router and a range of External IP addresses are assigned to the LAN side of the router (usually a range of 4 with 2 usable or a range of 8 with 6 usable). This then allows you to assign these externally accessible IP addresses to the devices on the network. However you will need to ensure that you have enough IP addresses for each device you wish to connect.


The WAN IP address is assigned to the WAN/ADSL port on the Customers router.

How do I configure the connection without routed IPs?

The router can be configured using NAT with local IP addresses (for example 10.0.0.0/8, 172.16.0.0/12 or 192.168.0.0/16 ) assigned to the network devices on the LAN side.


If you are running services that need to be externally accessible port forwarding can then be used. Port forwarding allows you to forward traffic though for specific ports to individual devices on the local network for example SMTP onto a mail server or SIP traffic to a PBX.

Our Suppliers DNS servers are

Primary: 88.215.61.255

Secondary: 88.215.63.255

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