[smichel17]

My home has a nominally dynamic ip (from Comcast), but I've only ever seen it change when the modem gets power cycled

[simias]

Yeah I think different ISPs have different policies when it comes to that, I think Orange in France would cycle the address every couple of days regardless of power cycling, but here in Portugal it seems that my Vodafone public IP hasn't changed in months.

[alias_neo]

This is quite typical. When I was younger and needed my IP changed, I'd simply power cycle my router.

Newer ISPs use CGNAT so you'll be sharing your public IP with a few neighbours (7+you in the case of my ISP).

[maccard]

My last isp used to to cycle ip addresses at 1am every night. The modem would disconnect and reconnect every device on the network.