Every request you make carries information about you: the public IP address of your connection and a description of your browser. Scripts on a page can add your screen size, language, time zone, input devices and a long list of supported features. Knowing exactly what is exposed helps in two very different situations: troubleshooting ("which address does the firewall see?", "which browser version does this user really run?") and privacy ("what does a site learn without asking?").
The My Info & Identity tools show these values directly. Start with My IP for your connection and User Agent for your browser; use IP Lookup and MAC Lookup when the address you care about is someone else's.
What these tools cover
- Your public IP address and everything public about it: the registry holder of the block, the network that routes it in BGP, reverse DNS and an approximate city-level location.
- Your browser's self-description: the user-agent string, User-Agent Client Hints, device and display values, locale and time zone, preferences, privacy signals, permission states and feature support, each labelled by source.
- Analysis of other identifiers: any public IP address (owner, ASN, abuse contact, location) and any MAC address (IEEE vendor, randomized or multicast).
What the category does not do: it does not search for people, compile profiles or reveal anything that is not already technically exposed. Locations are estimates of a provider's network, never of a person.
Why they matter
- Access control depends on them. Firewall allow-lists, VPN checks and admin panel restrictions use your public IP; getting it wrong locks you out or opens too much.
- Bugs depend on the environment. Browser version, engine, viewport, pixel ratio and feature support explain many "works on my machine" problems.
- Logs are full of identifiers. Addresses and user agents in access logs need context before you block, report or ignore them.
- Privacy starts with knowing what leaks. Seeing your IP's owner and your browser's signals makes VPN, proxy and browser privacy settings measurable instead of assumed.
The tools at a glance
| Tool | What it does | Best for | Guide |
|---|---|---|---|
| My IP | Show your public IP address and approximate location. | See the public IPv4 or IPv6 address your connection uses on the internet, plus approximate network and location details. | Guide |
| User Agent | Browser, user agent, device, screen and capability details. | See what your browser reports — browser, engine, OS, device, screen, locale, capabilities and privacy signals — and analyze any user-agent string. | Guide |
Which tool should I use?
| Problem | Tool | Guide |
|---|---|---|
| "What public IP does my traffic come from?" / checking a VPN | My IP | What is my IP |
| "Which browser, OS, screen and features does this device report?" | User Agent – My browser tab | User Agent guide |
| "What is this user-agent string from my logs?" | User Agent – Analyze tab | User Agent guide |
| "Who owns this IP, and where do I report abuse?" | IP Lookup | IP Lookup guide |
| "Which vendor made the device with this MAC address?" | MAC Lookup | MAC Lookup guide |
| "Roughly where is this IP address used?" | IP Geolocation | IP Geolocation guide |
Typical workflows
Verifying a VPN or proxy
- Open My IP without the VPN and note the address, owner and ASN.
- Connect the VPN and reload. The address, owner and ASN should now belong to the VPN provider.
- If only IPv4 changed and the page shows your provider's IPv6 address, the VPN is not carrying IPv6.
- Check User Agent for privacy signals such as Global Privacy Control if that is part of your setup.
Collecting details for a bug report
- Ask the user to open User Agent and press Copy summary or Download JSON.
- Read browser version (Client Hints when available), engine, viewport, pixel ratio and the feature table.
- If the bug is network-related, ask for My IP as well, then check the owner and ASN in IP Lookup.
Triage of an unknown client in your logs
- Paste the user-agent string into the Analyze tab of User Agent to see whether it claims to be a browser, crawler or command-line client.
- Look up the source address in IP Lookup: a crawler claiming to be a search engine but routed by a small hosting provider is suspicious.
- If abusive, use the abuse contact from the registry record.
Identifying a device on the LAN
- Find its MAC address in the router's DHCP or ARP table.
- Look it up in MAC Lookup. A vendor narrows down the device type; a locally administered address means a randomized phone or laptop.
- Work out its subnet with the Subnet Calculator if it seems to be in the wrong range.
Related guides
- What is my IP – public IP, NAT, CGNAT and IPv4/IPv6.
- User Agent & browser information – UA strings, Client Hints and browser APIs.
- IP Lookup – registry owners, ASNs and abuse contacts.
- MAC Address Lookup – OUIs, randomized and multicast MACs.
- IP & Network Utilities – lookups and calculators for addresses and subnets.
- Security & Testing tools – exposure checks and password tools.
Frequently asked questions
What can a website learn about me without asking?
Every site receives your public IP address and your browser's User-Agent header, and scripts can read screen size, language, time zone and which APIs your browser supports. The My IP and User Agent tools show exactly these values so you can see them for yourself.
Do these tools store my IP or browser data?
User Agent runs entirely in your browser and sends nothing. My IP needs the server to see your address; the server keeps only a short tool log with your IP shortened to its network for 30 days, and lookup results are not stored.
Why does my IP show a different city than where I am?
Location comes from a geolocation database that describes where the provider's address block is used, not where your device is. VPNs, mobile networks and large providers often appear in another city or country.
Can a website see my MAC address?
No. MAC addresses stay on your local network segment. The MAC Lookup tool identifies vendors for addresses you collect from your own switches, routers or DHCP tables.
Is my user agent a reliable way to identify my device?
No. Browsers deliberately freeze and reduce the user-agent string, and any client can change it. It is a hint for compatibility and statistics, not an identifier.
Are more identity tools planned?
Yes, the category may grow over time. Only the tools listed on this page are available today; planned tools are marked as such in the tool directory and are not described as working features.