How Do I Know If I Have Cgnat

RFC 6598 states that 100.64..10 should be assigned to your CPE if you are behind carrier-grade NAT. However I know of at least one CGN that uses 10.100 as their CGN IP range.. If you have access to the CPE, then you should be able to determine CGN by the IP address on the WAN interface.

If both addresses differ, then your ISP is using CGNAT. If they are the same, then it means that you are not behind CGNAT. Traceroute the public IP. You have to use the command prompt to check whether or not the ISP is performing CGNAT. You need to run a single command and analyze the results. Follow these instructions to understand the procedure

hello everyone in this video i am just explaining how CGNAT works on what you can do and not do with it i did not mention this but you could also try to Cont

Carrier-Grade Network Address Translation CGNAT is a technique used by Internet Service Providers ISPs to deal with the shortage of available IPv4 addresses. In a CGNAT environment, multiple customers share a single public IPv4 address, hindering the ability to directly forward ports to devices within a network.

CGNAT is mostly used in wireless carrier networks 4G, 5G, etc but can also be found on fixed broadband networks like Comcast and even smaller ISPs. You can usually tell if you're behind a CGNAT if your IP address is in a private IPv4 address range such as 10.X.X.X, 172.16-31.X.X, or 192.168.X.X, known as RFC 1918.

If CGN is in use the router often shows a WAN IP address like 100.xxx.xxx.xxx or 10.xxx.xxx.xxx.or 192.168.xxx.xxx. If your ISP is using CGN you must talk to them and tell them that you cannot use a subription with CGN, you must have a public IP-address. Note! This is only important at the Radio side.

I did some more reading and then found out that many ISP's have a solution to the IPv4 shortage, called CGNAT, where they essentially put multiple households onto one public IP for IPv4 while trying to give out unique IPv6's where possible. It would absolutely explain why I've had the same IPv4 for so long while the v6 changes periodically.

For example, your modem may have a router built into it. If so, you should put the modem into bridge mode. Then reboot the router and check its address, again. If you determine that you have CGNAT, then you could try asking them for a public IP address.

In the status screen of the router, a section will appear where it says quot WAN IP Address quot, quot WAN IP quot or similar, that is, we have to look at what IP address the router's Internet WAN interface is obtaining. In the following screenshot you can see a Digi connection using CG-NAT, as can be seen in the quotIP Addressquot section.

Find your public IP address. On Google, search for quotMy IP addressquot, or click this link.Note down the public IP address for later use. Open PowerShell. Press quotCtrl Xquot and click quotWindows