What is my IP address?
What is my IP? It is the address under which the internet sees your connection. It is looked up when you open the page, only displayed and never stored.
Source: CF-Connecting-IP, Cloudflare Docs – HTTP request headers. Updated: .
How it is calculated
Your public IP address is the address under which your internet connection is visible to websites and services. It is assigned by your internet provider and, on many connections, changes regularly – for example when your router reconnects.
How to find your IP address
- Open this page – your public IP address is fetched at once and shown at the top.
- Read the version (IPv4 or IPv6) and the address type; IPv6 is also shown written out in full.
- Use “Copy IP”, or “Check again” after restarting the router or switching VPN.
How it works
When you open the page, it queries the endpoint /api/ip on the same server. It replies with exactly the address your request came from and does not store it. Prefer the terminal? curl https://toolboxday.com/api/ip prints your IP as plain text.
IPv4 or IPv6?
- IPv4 (e.g.
203.0.113.7): four numbers from 0 to 255, about 4.3 billion addresses – far too few. That is why all devices at home share one public IPv4 address via the router (NAT), and some providers even share it between customers (carrier-grade NAT). - IPv6 (e.g.
2001:db8::1): 128 bits, eight groups of hexadecimal digits. There are enough addresses for every device; leading zeros and runs of zero groups are shortened (::).
If both your connection and the server support IPv6, browsers usually prefer it. So which version you see here depends on how your browser reached this page just now – you may well have the other kind of address too.
Public vs. private IP
Addresses such as 192.168.1.20 or 10.0.0.5 are private: they only exist inside your home network and cannot be reached from the internet. The public address belongs to your router. With a VPN, a proxy or Apple’s iCloud Private Relay, you will see the address of that service here, not your own.
Location, ISP and browser details
Below the IP you see the approximate location (city, region, country) and the internet provider with its AS number. Both are estimated from the IP address and point to the provider’s network node – often the nearest large city, and with mobile data or a VPN possibly somewhere else entirely. This is exactly what every website you visit can see. Further down are the details your browser reveals about itself: user agent, language, time zone, screen size and window size.
More network tools: the DNS lookup with reverse DNS for an IP, what is my user agent and what is my screen resolution.
Frequently asked questions
How do I find my IP address?
Open this page – your public IP is shown at the top. Your private address inside your home network is listed in your device’s Wi-Fi settings, or on Windows via the ipconfig command.
Why do I see an IPv6 address instead of IPv4?
Your connection supports IPv6 and your browser reached this page through it. That is normal – in fact it is the preferred route. You usually have an IPv4 address as well.
Does my IP address change?
On most home connections, yes – for example whenever the router reconnects. IPv6 addresses of individual devices also rotate regularly (privacy extensions). Static IP addresses are usually only available on business plans.
Can someone find my home address from my IP?
Only roughly: usually the region or city of your provider’s network node. Only your internet provider knows your name and address, and it discloses them only where the law requires, for example to law enforcement.
Is my IP address stored?
No. The endpoint only sends the address back to your browser; it is neither stored nor logged, and no cookies are set. See the privacy policy for details.
Sources and legal basis
- CF-Connecting-IP: Cloudflare Docs – HTTP request headers
- Cloudflare Workers – Request: IncomingRequestCfProperties (country, city, region, asn, asOrganization)
- RFC 791 – Internet Protocol (IPv4)
- RFC 8200 – Internet Protocol, Version 6 (IPv6)
- § 2.2 Text Representation: RFC 4291 – IP Version 6 Addressing Architecture
- RFC 5952 – IPv6 Address Text Representation
- IANA IPv4 Special-Purpose Address Registry
- IANA IPv6 Special-Purpose Address Registry
As of: · Editorial policy
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