Routing2 min read
What is an ISP (internet service provider)?
What your provider actually does, where it gets IP addresses, why a lookup may show another name than the brand you pay, and what it can see.
#ISP
- Privacy2 min read
What is CGNAT (carrier-grade NAT)?
Why your provider may be sharing one public IPv4 address with hundreds of customers, how to tell, and what it breaks.
- IP addresses2 min read
Why does my IP address change?
Dynamic leases, router restarts, mobile networks and IPv6 privacy addresses: the everyday reasons your IP isn't constant.