IP address: a question about that?

Somehow I'm having a hard time. So I ask you and I would be very happy about an understandable (than without extreme technical terms) and straightforward answer.

I use a stick on my laptop to access the internet. It then has the address 123.

Does he get this address every time, whether with a stick, landline or third-party / own WLAN? Or is a new, different address generated every time?

There are two types of IP addresses, the internal one, i.e. In your Wi-Fi which it changes depending on the setting, and the IP of your router, with which it connects to the Internet. This changes depending on how your Internet provider wants it.

I assume that this is more like the address 192.168.1.123 or something similar.

Whether or not he gets this every time depends on the settings of the DHCP server when you use DHCP. Some routers always assign the same MAC address, i.e. The same client in the LAN, to the same IP as standard, as long as the router is not restarted. If you specify a static IP, then of course it is always this one.

A Wi-Fi USB stick will only ever have one IP address in the Wi-Fi.

If the router has set DHCP, this can change

Yes, but it is never more than one at a time.

How do I know if I have a static IP or not?

You would have to configure a static IP manually in the advanced adapter settings.
Here is a guide: https://praxistipps.chip.de/...eben_30778

But I didn't claim xD either

Do you have to look in the settings of your router.

The address 123 does not exist. I'm assuming you mean IPv4. Then the address should look like this, for example: 192.168.1.1

Please give the full address. It is namely relevant whether you mean the local or the global / public IP. You can tell from the address.

It would also be important whether it is a simple USB network card or whether the part can be connected to the Internet directly without a router, like a cell phone.

If, according to the report, all addresses in wireless networks are dynamic, I have a new address every time I log in, right? Then the statement of a site operator is that he can check whether one or more times has been on his site wrong? That statement was on the side of a legal company. It just amazed me, hence my questions.

123 was just an example, sort of placeholder. I go online with a stick.

I'm not sure how to understand the question. The address 123 is meant more symbolically? And the stick is an LTE stick?

If you go online with an LTE stick, you will get such as B. A mobile phone also has an IP address from the provider. It is always different with a high probability. This IP address is usually a private IP address that is only valid within the provider network. You are on the Internet with a different IP address, which can also change.

If you access the Internet via a home router (it doesn't matter whether your device is connected via cable or Wi-Fi), you will receive a private IP address from the router. This IP address usually has the form 192.168.x.y. X is a number between 0 and 255, y is a number between 2 and 254. The probability that your device will always get the same IP address at home is very high. This IP address is only valid in your home network. You can be seen on the Internet with the IP address that the router receives from the provider. This IP address can change every 24 hours, but it depends on the provider. Sometimes this IP address stays longer with your router, only restarting the router would change the address. However, especially when accessing the Internet via the television cable, restarting the router will not result in a different IP address. All devices in the home network can be seen on the Internet with the same IP address.

(I leave out aspects like DS Lite in order not to complicate matters unnecessarily.)

If you have a free WLAN z. B. If you go to the Internet at a fast-food restaurant, you will also be assigned a private IP address. It will be different every time. You are on the Internet with the IP address of the connection. All devices that are connected to the WLAN in the fast-food restaurant are visible on the Internet with the same IP address. Whether and how often this IP address changes depends on the Internet connection.

Wait, your local IP address is irrelevant when you visit the Internet. It's about the IP of your router or the IP that your Internet gateway gets in the provider's WAN. It is as dynamic as your internet provider suggests. With ADSL this would previously be changed every day, with VDSL it can stay the same for weeks.

It looks exactly like that.

As you write in the comments:

123 was just an example, sort of placeholder. I go online with a stick.

If you go online with a cellular stick, it works exactly as franzhartwig already described it for cell phones.

You yourself get an IP address that the provider assigns you. In this case, the provider virtually takes on the function of the "router". In other words, your IP address is also a "local" IP address that is only valid within the network of the provider.

On the Internet (outside of the provider's internal network) you then have a so-called "public IP address" that you can't choose.

This has nothing to do with the (other) IP addresses that you get when you go online in a different way.

It is therefore different from the public IP address that you get when you connect the computer to your router at home via WLAN or LAN cable.

That is a stick, did you already say but what kind of one?

Do you go directly to the Internet with a stick or do you connect to a WLAN through the stick?