What Is My IP Address

Your public IP address is the single number that every website, API, and CDN sees when you connect to the internet. It is not a secret — it is the return address attached to every packet you send. This guide explains exactly what that address reveals, what it does not reveal, and how to read the result you get from a checker.

Public IP vs private IP

Almost every device has two addresses, and confusing them is the most common reason people think an IP checker is wrong.

Type	Example	Where it lives	Visible on the internet?
Private (LAN)	192.168.1.23	Inside your router	No — it never leaves your network
Public (WAN)	203.0.113.45	Your router's outbound side, or your ISP's edge	Yes — this is what sites see
Carrier-grade NAT	100.64.0.0/10	Inside the ISP	Only the ISP's shared egress is visible

A checker can only ever report the public address. If it shows something starting with 10., 172.16-31., or 192.168., the request reached the server through a local path — usually a misconfigured proxy or a corporate network that forwards internal addresses.

IPv4 and IPv6 are two separate addresses

Most networks now run both stacks. They are independent: you can have an IPv6 address while your IPv4 is hidden behind NAT, and vice versa. A privacy problem that is invisible on IPv4 — for example, a directly routable IPv6 device address — can be fully exposed on IPv6. Check both, not one.

IPv6 addresses are assigned in blocks. The first three or four groups typically identify your ISP's allocation, and the last groups identify your device. This means an IPv6 address can sometimes be more specific about your network than a NAT-ed IPv4 address is.

What an IP address actually reveals

• Rough location — usually city-level, occasionally district-level. Accuracy depends entirely on the ISP's registration data, not on GPS. Mobile networks can be off by hundreds of kilometres because traffic is routed through a regional gateway.
• ISP and organisation — the network owner, which is often a hosting company, a university, or a VPN provider rather than a consumer ISP.
• ASN — the Autonomous System Number, the routing identity of the network. This is the most reliable signal for telling "home connection" from "datacenter".
• Connection type — residential, business, mobile, hosting, or proxy, inferred from the ASN and registration data.

What it does not reveal

An IP address is not a fingerprint of you as a person. It does not carry your name, your account, your email, or your precise street address. Several households and devices routinely share one address through NAT, and thousands of users can share one address on mobile networks. Claims that "an IP reveals your home" are usually describing a court order plus ISP records, not something a website can look up.

What a site can do is build a profile over time: same IP plus same browser plus same timezone equals a persistent identifier. That is why IP checks are usually the first step of a privacy review, not the last.

Why you should re-check after enabling a VPN or proxy

Turning on a VPN changes your IP only if the traffic actually leaves through the tunnel. Common failures:

• Leak on the local side — one interface or app bypasses the tunnel and keeps the original address.
• Split tunnelling — some apps are deliberately excluded and still expose your real address.
• IPv6 bypass — the tunnel handles IPv4 only, so IPv6 traffic goes out directly.
• DNS outside the tunnel — the page loads from the VPN while DNS queries still go to the ISP.

A single IP lookup catches the first three immediately. The fourth needs a separate DNS leak test, because DNS happens on a different channel than page requests.

How to read the result from IPOK

Each field answers a different question, and they should be read together:

1. IP and version — confirm you are looking at the address you expect. If you enabled a VPN and the address is unchanged, the tunnel is not carrying traffic.
2. ISP / organisation — if this shows a hosting company name while you are on a home connection, something between you and the site is rewriting the path.
3. ASN and type — the type field is an inference, not a fact. Datacenter detection is reliable; VPN detection is heuristic. Treat a "proxy" result as a signal to cross-check, not a verdict.
4. Location — compare against the VPN server's advertised region. A mismatch usually means the exit node is registered elsewhere than its marketing claims.

Common false conclusions

Three mistakes show up repeatedly when people read an IP result:

• "The city is wrong, so the database is broken." City-level geolocation is approximate by design. The country and ASN are the trustworthy parts.
• "It says proxy, so I am compromised." Detection flags often fire on CGNAT, corporate egress, and cloud desktops. Confirm with the consistency and DNS checks before drawing a conclusion.
• "The IP changed, so I am anonymous." A new IP does not change your browser fingerprint, your timezone, or your language settings. Those are what link sessions together.

FAQ

Does my IP address change?

Yes. Consumer connections usually get a new address on router reboot or after an ISP lease expires; mobile connections change far more often. Static addresses are normally a paid business feature.

Can two devices have the same public IP?

Yes, routinely. Every device behind one router shares it, and large numbers of mobile users share a single carrier NAT address.

Is checking my IP safe?

The lookup itself reveals the same information any website already receives when you connect. The risk is not the check — it is what the result tells you about an existing leak.