IP Address Lookup UK: Check Your Public IP, Location, ISP, and ASN

Most people who search for IP address lookup UK want a quick answer first: what public IP can websites see right now?

The next questions usually matter just as much. Is the address IPv4 or IPv6? Does the result look like a home broadband connection, mobile carrier, company gateway, VPN, proxy, or hosting network? Is the location shown as the UK, or does it point to a city that feels wrong?

Start with IP Lookup. Leave the field empty to check your own connection, or paste any IPv4 or IPv6 address to inspect another address.

What a UK IP address lookup should show

A useful lookup should show more than a single IP number.

Look for:

• the visible public IP address
• whether it is IPv4 or IPv6
• country, region, and city-level location estimates
• ISP, carrier, or network owner
• ASN, which identifies the network announcing the route
• VPN, proxy, Tor, hosting, or datacenter clues when available

If you only care about copying your current IP, the first line is enough. If you are debugging login alerts, streaming-region checks, mail delivery, fraud warnings, or firewall rules, read the network context before trusting the map.

Why a UK lookup can show the wrong city

IP location is approximate. It is not GPS.

In the UK, one public IP can point to a provider hub, mobile gateway, workplace network, VPN exit, or broadband routing area rather than the exact town where the device sits.

That means a result can say London, Manchester, Birmingham, Leeds, Glasgow, Cardiff, Belfast, or another nearby area even when the user is somewhere else. The city label is a clue. The ASN and provider often explain the result better.

For a deeper check, read Why Does My IP Location Look Wrong?.

UK public IP vs private IP

Your public IP is the address external websites see.

Your private IP is the address your laptop, phone, or router uses inside your local network. Private addresses often start with 192.168., 10., or 172.16. through 172.31..

If your device settings show one address and an IP checker shows another, that is usually normal. The checker is showing the internet-facing address, while the device settings are showing the local network address.

Read Public vs Private IP Addresses if you need the difference spelled out.

IPv4 and IPv6 in a UK IP lookup

Many UK networks support IPv4. Some support IPv6 as well. A browser session can use one or the other depending on the network, router, VPN, and destination.

When you run a live lookup, check the version badge:

• IPv4 usually looks like 203.0.113.10
• IPv6 usually looks like 2001:db8::42

If your router shows IPv6 but the website sees IPv4, the outward path for that session may still be IPv4. That does not automatically mean anything is broken.

For examples and format notes, keep IPv6 Address Examples and Format open.

When to use a UK IP lookup

Common reasons include:

• checking the IP a website, game server, or remote login portal can see
• confirming whether a VPN or proxy changes the visible address
• checking whether a login alert came from the expected country or provider
• finding the ISP, carrier, ASN, or hosting network behind an address
• comparing broadband and mobile results
• checking whether an IPv6 connection is really being used

If you are checking a website rather than a person, use Domain Lookup as well. DNS, nameservers, SSL, and resolved IPs tell a different part of the story.

A simple UK IP lookup workflow

1. Open IP Lookup.
2. Check the visible public IP and IP version.
3. Read the country, region, and city as an estimate.
4. Check the ISP, carrier, or network owner.
5. Use the ASN to understand the route.
6. If a VPN or proxy is active, run the lookup once with it on and once with it off.

That comparison usually explains why a result changed.

FAQ

What is my IP address in the UK?

Open IP Lookup with no address entered. The result shows the public IP visible from your current browser session, plus IPv4 or IPv6 status and network context.

Can an IP lookup find my exact UK address?

No. IP lookup can estimate country, region, city, ISP, ASN, and network type. It cannot reliably identify a street address or one individual person.

Why does my UK IP show a different city?

The result may reflect ISP routing, mobile carrier egress, VPN or proxy infrastructure, a workplace gateway, or stale location mapping. Treat the city as approximate.

Is ASN more useful than IP location?

Often, yes. The ASN tells you which network announces the IP range. That can explain whether the address belongs to a broadband provider, mobile carrier, company network, or hosting platform.

Does the lookup work with IPv6?

Yes. You can check the IPv6 address visible to websites, or paste an IPv6 address manually for lookup.