What Is an IP Address?
An IP (Internet Protocol) address is the numeric address your connection uses on the internet — think of it as the postal address on a package. Every device that talks over IP needs such an address so that data can be routed to the right place. When you open a website, that site (and everything in between) sees the public IP address of your connection, typically your router’s address, shared by all devices on your home network.
IPv4 vs IPv6: two address formats
The internet mostly ran on IPv4, a 32-bit format written as four numbers, for example 8.8.8.8. That scheme allows only about 4.3 billion unique addresses — not enough for today’s world, so its successor IPv6 uses 128-bit addresses written in groups of hex digits, for example 2606:4700:4700::1111. IPv6 is practically inexhaustible and is now the norm for new network rollouts, with IPv4 coexisting during the transition.
Public vs private addresses
- Public IP: the address assigned to your connection by your ISP, visible to the outside internet. This is what What Is My IP shows you.
- Private IP: addresses used inside your home or office network (like
192.168.1.10). These are never sent across the internet; your router translates between private and public addresses (NAT).
What an IP address can reveal
Public databases map address ranges to the organizations that own them. From an IP, lookup services like ipwho.is (used by our IP Lookup) can typically return:
- The country where the block is registered (usually reliable).
- A rough region or city (often less precise).
- The ISP or organization that owns the range, and its ASN.
- Sometimes the timezone associated with the region.
What an IP address can never reveal
An IP is not a person, a device inventory or a GPS pin. It cannot tell you the name of the person behind the connection, their street address, or exactly which device in a household did something. Geolocation estimates describe where the address is registered, which can be far from where the traffic actually originates — a data center, an ISP hub or even another country.
Why geolocation results vary by site
Different services license different databases that update on different schedules, so lookups for the same IP can disagree, especially below the country level. That is exactly why each result on YourAnalystAI carries a source label telling you which database it came from.
Dynamic vs static addresses
Most residential connections get a dynamic address that changes from time to time — when the router reconnects, or on the ISP’s schedule. Servers and many business connections pay for static addresses that never change. This is why a suspicious login to your account can appear to come from “your city” even when you are in a different one: geolocation points at the registered region of your ISP’s blocks.