What's an IP Address?

Your internet-connected devices are assigned IP addresses, which can be public or private. A public IP address is the unique identifier assigned to your network by your Internet Service Provider (ISP). It allows your network to communicate with the broader internet and is visible to external websites and services. In contrast, a private IP address is used within your local network—assigned by your router to devices like phones, laptops, or printers. Private IP addresses (such as 192.168.x.x or 10.x.x.x) are not routable on the internet and are used solely for communication between devices inside your home or office network.

How do I find my Public IP Address?

If you're using a Route10, first login to the web interface at https://manage.alta.inc or use the Alta Networks mobile app.

1. Go to the Network tab
2. Put your cursor over the IP address that corresponds to the Route10's IP address. On mobile, tap the IP address.
3. Observe the IP provided on either eth3 or eth4 (Ethernet and SFP+, respectively) or possibly both if you're running multiple WANs

Invalid addresses

If the IP displayed falls into the following ranges of private IP or CGNAT addresses, the following list (not exhaustive) of features and/or functionality may be compromised:

• VPN server
• Port forwarding
• Online gaming
• VoIP calling

Private subnets

If the address falls into one of the following blocks, then your Route10 is not correctly connected to the internet:

• 10.0.0.0 – 10.255.255.255
• 172.16.0.0 – 172.31.255.255
• 192.168.0.0 – 192.168.255.255

This is most commonly caused by connecting the Route10 behind another router. Your service provider's modem may include a built-in router component; please contact your ISP for solutions like bridging, IP passthrough, or replacing the modem.

Carrier-grade NAT

CGNAT is a shared address space which is not directly exposed to the internet, but is translated elsewhere by the ISP. This block of addresses may require external workarounds to expose your local network services to the internet.

• 100.64.0.0 – 100.127.255.255

Confirm DDNS resolution

Once you have confirmed that your IP address is a public WAN address, you may check that the DDNS correctly resolves to that address. Use tools like dig, nslookup, or an online DNS record lookup service.

You'll find the DDNS in the same tooltip as above; copy and paste it into your tool and confirm that the DDNS address resolves to the same address as your public WAN.