IP IP Guide
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IP Guide

Every line the tool shows has a story. These guides explain what those lines mean and what to do about them — and each page ends with a look at your own IP.

The IP address: your return address on the internet
What an IP address is, who assigns it, and what websites can learn from yours. Public vs private IPs, in plain language.
IPv4 ran out, IPv6 arrived: two address universes
The difference between IPv4 and IPv6, how address exhaustion created CGNAT, and how to tell which one you are on.
CGNAT: hundreds of subscribers, one IP — and why remote access fails
What carrier-grade NAT is, why your IP is not really "yours", why port forwarding does nothing, and the ways out.
Location from an IP: how it is derived, why it misses
How IP geolocation actually works, where the data comes from, the four classic reasons it shows the wrong city, and our five-source consensus approach.
VPN/proxy detection: what gives it away?
The signals behind VPN checks: datacenter IP ranges, ASN type, exit-node lists. What "VPN detected" really means and whether false alarms happen.
Static or dynamic: the lease terms of your IP address
The difference between static and dynamic IPs, who needs which, the trade-offs, and reaching home on a dynamic IP with DDNS.
ASN: the neighbourhood numbers of the internet
What the AS number (ASN) in a lookup result is, who assigns it, and what an IP's ASN reveals — its role in network diagnosis and VPN detection.
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