IP address changing?

[thepharcyde]

Is it normal that everytime I disconnect from the internet/reboot my router that my IP address changes?

I am with Tiscali.

Just done it three times in a row and different everytime

79.64.76.225
79.64.125.135
79.64.59.215

 

[thepharcyde]

With Tiscali you don't get a static address. It changes everytime. This is called a dynamic IP address.

Oh I did not know this. Whats the difference, how come they do this?

 

[thepharcyde]

Not all ISPs allow this. All the big main companies don't. I am on sky and they don't provide them. Dynamic is fine for most users anyway.

Nah do not need one was a bit miffed as I thought you were assigned your own etc for security reasons. So I potentially get assigned one which someone else has been assigned in the past?