What Your IP Address Reveals, and What It Does Not
Every site you visit sees the public IP address your connection is using. People tend to either shrug at that or worry that it gives away their home. The reality sits between the two, and it is easier to judge once you know where the details come from.
What an IP address is
An IP address is a number that lets replies find their way back to you. Your public address is assigned by your internet provider, mobile carrier, employer or VPN, and it is the address the rest of the internet sees. Inside your home, your devices use private addresses such as 192.168.1.20, which only work on your local network. Your router translates between the two, so one public IPv4 address commonly stands in for every device in the house. On many mobile and some home networks, a carrier-grade NAT goes further and shares a single public address among many customers at once.
What a website can work out
| Detail | How it is found | How reliable it is |
|---|---|---|
| Your ISP or network owner | Registry records (WHOIS and RDAP) show which organization holds the address block. | Very reliable. It is public record. |
| Your ASN | The autonomous system number identifies the network that announces the address to the internet. | Very reliable. |
| Reverse DNS hostname | A PTR record sometimes includes the provider's name or a regional code. | Varies. Many addresses have none, or a generic name. |
| Approximate location | Commercial databases estimate it from registry data, routing and other signals. | Usually the right country and often the right region. City-level answers can be wrong, and the pin often lands at the provider's regional hub. |
| Time zone | Inferred from the estimated location. | Good, except for people who travel or use a VPN. |
| Whether you use a VPN, proxy or hosting network | The address belongs to a known VPN or data center range. | Often accurate, and used by sites to flag unusual traffic. |
You can see exactly this view on the GotInfo home page. It shows your IPv4 and IPv6 addresses, hostname, ISP, organization, ASN and location, along with the ARIN RDAP record for your network.
What it does not reveal
- Your name or street address. Only your provider can link an address to a customer account, and it does so under its own policies and legal process.
- Your precise position. An IP address is not GPS. The location is a database estimate, and a site only gets your exact position if your browser asks for permission and you approve.
- Which device you are on. Everything behind your router appears as the same address.
- What is on your device. A visited site cannot read your files, your messages or your history from your address alone.
- What you do on other sites. The address says nothing about other visits unless the sites share data with each other.
Why it still matters
An IP address does not identify you on its own, but it is one useful signal. Combined with cookies, a logged-in account or a browser fingerprint, it can help connect visits to the same person. It also lets services block regions, limit abuse and detect logins from unexpected places, and it tells the sites you visit and any network in between that you connected, even when the content is encrypted.
IPv4, IPv6 and changing addresses
IPv4 addresses look like 203.0.113.7. IPv6 addresses are much longer, such as 2001:db8::1, and are common on mobile networks and newer home connections. Many devices use temporary IPv6 addresses that change over time, a feature intended to make long-term tracking harder. At home your IPv4 address is usually dynamic, which means it can change when your router reconnects, although some providers keep the same one for months.
Reducing what your address shows
- A VPN replaces your public address with the VPN's, hiding your home network from sites you visit, although the VPN company can see your traffic origin.
- Tor Browser routes traffic through several relays, so a site sees an exit relay's address. It is slower, and some sites block it.
- iCloud Private Relay and similar services hide your address for Safari browsing on supported devices.
- Tethering to a mobile hotspot gives a different address, but it still belongs to your carrier.
- Check for leaks. Browsers support WebRTC, which in some setups exposes addresses outside a VPN. Many browsers now hide local addresses behind random names, but it is worth checking. The Information for Nerds section on the GotInfo home page lists the addresses WebRTC reports.
Try it now: open GotInfo to see your own IP address, ISP, ASN and location the way a website sees them.