Skip Navigation

Static IP Addresses

A Static IP Address is an IP Address associated with your account that never changes and can be assigned to a single device. Learn more about the benefits.

Learn more about static IP addresses

A Static IP Address is an IP Address that is associated with your account that never changes and can be assigned to a specific device. Every time that you connect to the AT&T Network the Static IP address will route traffic to the computer or other device that can be assigned an IP address (such as a Router or Firewall). This allows you to host a variety of applications on your computer that can be accessed remotely.

AT&T Static IP is useful for consumers and many small businesses that have needs such as:
  • Host a web, mail or FTP server
  • Access a corporate network remotely
  • Host a webcam for video streaming
  • Use some video conference applications
When you purchase a block of AT&T Static IP addresses, three of the addresses will be allocated to the following network functions - one address as the network base address; one address for your AT&T Gateway; and one address as your broadcast address. Therefore, the number of usable addresses is three less than the total number of addresses in your block. The current block sizes are:

Total Block SizeUsable Addresses
85
1613
3229
6461
128125

Please contact us for pricing and additional Static IP address information.

When you connect to the AT&T network you will get a Dynamic Wide Area Network (WAN) address. The Dynamic WAN address is then associated with your Static IP and acts as a gateway for the Static IP addresses to reach the network. AT&T doesn't automatically assign Static IP addresses to devices connected to the Dynamic WAN. In order to use your Static IP addresses you will need to configure your gateway by following the steps below (or you may contact us for assistance configuring your gateway).

Motorola Gateways

  1. Launch a browser window and navigate to IP address 192.168.1.254.
  2. Click Home Network.
  3. Click Subnets & DHCP.
  4. Enter the system password, if prompted. The device access code (system password) is a 10-digit code found on the label side of RG (the label on the 589 is black with white letters). If the customer has changed their password, gather this information from the customer and enter it.
  5. Under Public Subnet, toggle the Public Subnet Enable from Off to On.
  6. In the Public IPv4 address field, enter the router address of the public static block. This is the second from last IP address in the IP block.
  7. In the Subnet Mask field, enter the subnet mask.
  8. Enter in the first and last usable IP address in the DHCPv4 start address field and the DHCPv4 end address field appropriately.
  9. In the primary DHCP pool section, click Private radio button if you would like to statically assign your public IPs to your devices, or click Public radio button if you would like the gateway to automatically assign your public IP's by DHCP. Please note if the public option is selected, the gateway will assign your public IP's on a first come first serve basis to any device that makes a DHCP request, including computers, tablets, smartphones, etc. The Private option is recommended.
  10. Click Save.

The gateway is now configured and you can now statically assign the public IP addresses in your devices. If you need assistance with configuring your 3rd party devices to use a static IP, please contact the manufacturer of the device for a further assistance.

Note: Any device using a public IP on a Motorola gateway will not have firewall protection.

Pace/2wire Gateway

  1. Connect a PC directly to the Pace/2Wire device.
  2. Launch a browser window and navigate to the IP Address 192.168.1.254 to access the GUI of your device
  3. Click on the Setting tab near the top of the page.
  4. Click Broadband.
  5. Click Link Configuration.
  6. Scroll to the Supplementary Network section on the Link Configuration page.
  7. Check the Enable check box under Add Additional Network.
  8. In the Router Address field, enter the router address of your block of public IP addresses.
  9. In the Subnet Mask field, enter the subnet mask.
  10. Check the Auto Firewall Open setting with DMZ for all devices connected to the public routed sub-interface.
  11. Click Save.

The gateway is now configured and you can now statically assign the IP addresses or you can configure the gateway to assign public addresses to each device on your network. If you need help statically assigning an IP address on your third party devices, please contact the manufacturer of the device for further assistance.

Configure DHCP
If you have a Pace/2wire device, you also can assign your public addresses through DHCP by using the steps below.
  1. Connect a PC directly to the Pace/2Wire device.
  2. Launch a browser window and navigate to the IP Address 192.168.1.254 to access the GUI of your device.
  3. Click on the Setting tab near the top of the page.
  4. Click LAN.
  5. Click IP Address Allocation.
  6. Identify the device that needs a public IP address. (Please note if the device is not connected directly to the gateway it will not appear on this list. If the device is connected but still not showing in the list, powercycle the device and make sure it is configured to obtain an IP address through DHCP).
  7. Each device has three drop-down menus:
    • Firewall: This will allow you to configure firewall protection on the device. Change to Disabled if you do not want firewall protection on the device.
    • Address assignment: Select Public (select WAN IP Mapping) option.
    • WAN IP Mapping: Select the IP address you want assigned to the device.
  8. Click Save at the bottom of the screen.
  9. Renew the IP address on your device.
Last updated: December 7, 2022