I said static IP in my comment above, although that's not quite accurate. They're "sticky" IP addresses so don't normally change. No CGNAT either, but there was

I said static IP in my comment above, although that's not quite accurate. They're "sticky" IP addresses so don't normally change. No CGNAT either, but there was downtime a couple of days ago. I suppose my IP could have changed, as I've made no attempt to remember it. I think I'll actually follow up with my ISP. Cause if there is some rogue software/hardware on my network I'd love to know about it!