It depends. If your ISP needs the address for another customer and you're offline they'll give your old IP to them. If however, they have plenty of addresses in the pool you're likely to get the same address back.
There's also the cases where you're assigned an internal address(10.x.x.x or 172.16.x.x) for example, those are usually regionally assigned or city assigned if the ISP is small and can't afford to buy large numbers of IPv4 or IPv6 addresses, and in turn use NAT. So you could have 250 or 300 people or more on a single IP address and the NAT device routes the traffic - this was very common here in the west in the early days of the net too. But still very common in very poor or remote places.
Not true. That only happens if your ISP has a large pool of extra addresses. I've had the same IP address for about 6mo now, inc. after two power outages lasting 2+ hours.
If your ISP has fully transitioned to IPv6, you will likely have a static IP forever since they can do IPv4 to IPv6 via NAT in a fully seamless way.
Your IP changes every time you disconnect your modem unless you have a static IP.
That is not usually true. IP changes when the dhcp lease expires
Does the DHCP lease not expire when you disconnect your modem?
It depends. If your ISP needs the address for another customer and you're offline they'll give your old IP to them. If however, they have plenty of addresses in the pool you're likely to get the same address back.
There's also the cases where you're assigned an internal address(10.x.x.x or 172.16.x.x) for example, those are usually regionally assigned or city assigned if the ISP is small and can't afford to buy large numbers of IPv4 or IPv6 addresses, and in turn use NAT. So you could have 250 or 300 people or more on a single IP address and the NAT device routes the traffic - this was very common here in the west in the early days of the net too. But still very common in very poor or remote places.
Not true. That only happens if your ISP has a large pool of extra addresses. I've had the same IP address for about 6mo now, inc. after two power outages lasting 2+ hours.
If your ISP has fully transitioned to IPv6, you will likely have a static IP forever since they can do IPv4 to IPv6 via NAT in a fully seamless way.