>>4069

>IPV4 has 4 just billion address space.
Exactly 4.294.967.296 is the maximum as there are 32 bits used. In total 592.709.120 addresses are reserved for multicast addresses (268.435.456), future use (268.435.456), private use (17.891.328), software usage (16.777.216), loopback addresses (16.777.216) and other special purposes (4.392.448). This leaves 3.702.258.176 IP-addresses for "the rest of the world" (WAN). [Source: https://en.wikipedia.org/wiki/IPv4]
And these are spread over five RIR-areas.
So you did the math correctly and came to the following conclusions:

-- >there are not enough addressees for everyone, which makes tracking impossible.
... not without additional parameters (as I said in >>4055), which in this case are the logs of the ISP.

-- >it is impossible to assign unique ip to everyone already.
... not at one time. But still (as I said in >>4068):
>At one time each IP-address is worldwide unique.
... more precisely each WAN-IP-address. Inside their pools the ISPs can use Network Address Translation (NAT) and Network Address Port Translation (NAPT) to partly overcome the address shortage. This is transparent to the clients.

>in that situation ISP will gain nothing from dynamic IPs same number of IPs will be required
To be strictly accurate, the ISPs work only with dynamic IPs - even in China. All the "magic" happens "behind the curtain", so the clients don't recognize it.

>you are always connected on optic or mobile as long as your phone is on
Did you ever consider what happens if you switch your device off (into the state without electric current ;p )? You will be absolutely disconnected and reconnected after you switch on again. If you don't get a new IP, then your ISP reserved the old one for you and uses additional parameters to identify you (as I said in >>4055): This can be the hardware connection to your site (optical fibre or copper cable (I know, the latter not in your case)) or your phone number or your account.

>I start to feel guilty for spamming Logonis thread...
Me too. So I apologize and propose to end this disput here. Anyhow, I think everything is said. If its important, lets continue in /dis/.