Basics · 11 min read · June 2, 2026 · IPLocatorTools

What Is My IP Address? Complete Guide to Understanding Your IP

Your IP address is your device's identity on the internet. Learn what it is, what it reveals, how to find it, and why it matters for your privacy.

Every device connected to the internet has an IP address. It is how the internet knows where to deliver the data you request — whether that is a web page, a video stream, or an email. Understanding your IP address is one of the most fundamental things you can know about how the internet actually works.

The fastest way to see your current IP address is to use the IP Lookup tool at IPLocatorTools. It shows your public IPv4 and IPv6 addresses, your approximate location, your ISP, timezone, and plots your location on an interactive map — all instantly, with no signup required.

What is an IP Address?

IP stands for Internet Protocol. An IP address is a numerical label assigned to every device that connects to a network. The Internet Protocol is the set of rules that governs how data is sent and received across networks — the IP address is the fundamental part of that system that identifies where to send data.

Think of it like a postal address. When you order something online, the courier needs your address to deliver the package. When your browser requests a web page, the web server needs your IP address to send the response back to you. Without an IP address, the internet has no way to deliver data to your device.

Every device on the internet has an IP address — your laptop, your phone, your router, the web server hosting your favourite website, the DNS server that resolves domain names, and every router and switch in between. The internet is essentially billions of devices exchanging data by addressing packets to specific IP addresses.

Two Types of IP Address: Public vs Private

Understanding the difference between public and private IP addresses is essential for understanding how your home network works.

Your Public IP Address

Your public IP address is assigned by your Internet Service Provider (ISP) and is visible to every server on the internet that you connect to. When you visit a website, the web server sees your public IP address in the request. When you download a file, the file server sends it to your public IP. When you send an email, the recipient's mail server logs your public IP.

Importantly, your public IP is shared by every device on your home network. Your laptop, your phone, your smart TV, and your gaming console all appear to have the same public IP address to the outside internet. Your router handles the translation between internal devices and the single public IP.

You can see your current public IP address right now at IPLocatorTools. It is shown automatically when you visit the page — no input required.

Your Private IP Address

Your private IP address is assigned by your router to each individual device on your home network. This is the address your devices use to communicate with each other locally. Common private IP address ranges are:

• 192.168.0.0 – 192.168.255.255 (most home routers)
• 10.0.0.0 – 10.255.255.255 (common in larger networks)
• 172.16.0.0 – 172.31.255.255 (less common)

These private ranges are defined by RFC 1918 and are specifically reserved for internal network use. They are not routable on the public internet — packets with a private IP destination are never forwarded beyond your local network.

Your router uses a process called NAT (Network Address Translation) to translate between your devices' private IPs and your single public IP. When your laptop (private IP: 192.168.1.5) requests a webpage, your router records the request, changes the source IP to your public IP, forwards the request to the internet, receives the response to your public IP, and forwards it back to 192.168.1.5. All of this happens in milliseconds, invisibly.

IPv4 vs IPv6: Two Generations of IP Addresses

IPv4

Most IP addresses you encounter are IPv4 — the original IP addressing system, created in 1981. IPv4 addresses consist of four numbers separated by dots, each ranging from 0 to 255:

203.0.113.42

IPv4 uses 32-bit addresses, which allows for approximately 4.3 billion unique addresses. This seemed more than sufficient in 1981 when the internet had a few hundred computers. By the early 2000s, the explosion of internet-connected devices made it clear that 4.3 billion addresses would not be enough.

IPv6

IPv6 was developed to solve IPv4 exhaustion. IPv6 addresses are 128 bits long, allowing for approximately 340 undecillion unique addresses — a number so large it is effectively unlimited. IPv6 addresses use hexadecimal notation separated by colons:

2001:db8:85a3:0000:0000:8a2e:0370:7334

Leading zeros in each group can be omitted, and a consecutive sequence of all-zero groups can be replaced with :::

2001:db8:85a3::8a2e:370:7334

Most modern internet connections are dual-stack — your device has both an IPv4 and an IPv6 address. When connecting to a server that supports both, modern operating systems prefer IPv6. When connecting to servers that only support IPv4, your device falls back to IPv4.

Read the full explanation: IPv4 vs IPv6 — What's the Difference? →

How to Find Your IP Address

Your Public IP (Easiest Method)

Visit IPLocatorTools in any browser. Your public IPv4 and IPv6 addresses are displayed automatically. No signup, no download, completely free.

Your Private IP on Windows

1. Press Windows + R, type cmd, press Enter
2. Type ipconfig and press Enter
3. Find your active network adapter (usually "Ethernet adapter" or "Wireless LAN adapter Wi-Fi")
4. Look for "IPv4 Address" — this is your private IP on your local network

Your Private IP on Mac

Using Terminal:

1. Open Terminal (Applications → Utilities → Terminal)
2. For Wi-Fi: type ipconfig getifaddr en0
3. For Ethernet: type ipconfig getifaddr en1

Using System Preferences:

1. Open System Preferences → Network
2. Select your active connection (Wi-Fi or Ethernet)
3. Your private IP is shown directly on the right panel

Your Private IP on iPhone

1. Open Settings → Wi-Fi
2. Tap the (ℹ) icon next to your connected network
3. Your private IP is shown under "IPv4 Address"

Your Private IP on Android

1. Open Settings → Network & internet → Wi-Fi
2. Tap on your connected network
3. Scroll down to see your IP address under network details

What Does Your IP Address Reveal?

When a website, service, or person sees your IP address, they can determine:

Your approximate location — Specifically your country, region, and usually the city associated with your IP address. Geolocation accuracy varies: country-level is nearly always correct (99%+), city-level is typically accurate within 25–50 miles for fixed broadband connections, and less accurate for mobile connections which route through regional carrier gateways.

Your Internet Service Provider — The ISP or organisation that owns the IP range. This tells observers whether you are on home broadband (Comcast, BT, Vodafone), mobile data, a corporate network, a VPN, or a cloud provider like AWS or DigitalOcean.

Your AS Number (ASN) — The Autonomous System Number identifies the network block your IP belongs to. Each ISP and large organisation has one or more ASNs.

Your timezone — Inferred from your geographic location.

Whether you are using a VPN or proxy — VPN and datacenter IP ranges are published and widely known. Services like streaming platforms and banks actively check for known VPN IPs.

What it cannot reveal: Your exact street address, your name, your browsing history, or your phone number. Only your ISP has the mapping between your IP address and your personal account details, and they are legally required to protect this information.

Read the full breakdown: What Does Your IP Address Reveal? →

Static vs Dynamic IP Addresses

Dynamic IP Addresses

Most home internet connections use dynamic IP addresses. Your ISP has a pool of IP addresses and assigns one to your router when you connect. This address may change when your router reboots, after a set period, or when the ISP reallocates addresses in their pool.

Dynamic IPs are the standard for home users because they allow ISPs to reuse IP addresses efficiently. Most home users do not need a consistent IP address that others can rely on.

Static IP Addresses

A static IP address stays the same indefinitely. Businesses typically pay their ISP for a static IP because it is required for:

• Hosting web servers, mail servers, or VPN gateways that others need to connect to
• Remote access systems that whitelist specific IP addresses
• Security cameras and monitoring systems accessible over the internet
• Some payment processor and banking services that whitelist client IPs

Learn more: Static vs Dynamic IP Addresses →

Carrier-Grade NAT (CGNAT) — When You Share a Public IP

In regions where IPv4 addresses are scarce, many ISPs use Carrier-Grade NAT (CGNAT). With CGNAT, your ISP assigns a private IP to your router (in the 100.64.0.0/10 range), and multiple customers share a single public IP address — not just multiple devices within one household, but multiple households sharing one IP.

CGNAT creates practical problems:

• You cannot host servers accessible from the internet
• Some online games and peer-to-peer applications work poorly because incoming connections are blocked
• IP-based access controls and geo-verification systems may not work correctly
• The shared IP may have been blacklisted by another user's activity

If your public IP shows a location that does not match your actual city, or if your ISP name looks like a network address rather than your ISP's name, you may be behind CGNAT. Contact your ISP to ask about getting a dedicated public IP — some offer this free of charge, others charge a small fee.

Why Your IP Address Matters for Security

IP-Based Access Control

Many services use IP address whitelisting as a security measure. Corporate VPNs, cloud management consoles, database servers, and some banking services only accept connections from specific pre-approved IP addresses. If your dynamic IP changes, you lose access until the new IP is whitelisted.

Brute Force and DDoS Protection

Web servers and security systems track IP addresses to detect and block attack patterns. Multiple failed login attempts from the same IP trigger automatic blocks. DDoS mitigation systems identify and filter traffic from malicious IP ranges. These security measures rely on IP addresses being reliable identifiers.

Email Spam Filtering

Email servers check the sender's IP address against IP blacklists before accepting incoming email. If your IP address has been used to send spam (possibly by a previous user of a dynamic IP, or malware on your network), your legitimate emails may be rejected or filtered.

Use the IP Blacklist Checker to see if your IP is listed on any major spam databases.

How IP Addresses Are Assigned Globally

IP addresses are not randomly assigned. There is a structured global hierarchy:

IANA (Internet Assigned Numbers Authority) — The global authority that manages the overall IP address space. IANA allocates large blocks to regional registries.

Regional Internet Registries (RIRs) — Five organisations manage IP allocation for their geographic regions:

• ARIN — North America
• RIPE NCC — Europe, Middle East, Central Asia
• APNIC — Asia-Pacific
• LACNIC — Latin America and the Caribbean
• AFRINIC — Africa

ISPs and organisations — Each ISP receives an allocation from their regional RIR and assigns individual IPs to customers.

This hierarchy is why IP geolocation works — the WHOIS and RDAP databases maintained by RIRs map IP ranges to organisations and locations. When IPLocatorTools looks up your IP, it queries these databases and cross-references with ipinfo.io's geolocation database to determine your approximate location.

How to Check Your IP Address History

Most home users cannot easily check their IP history — ISPs do not provide customers with logs of past IP assignments. However, if you need to track changes:

• Note your IP address at IPLocatorTools today and check periodically to see when it changes
• Your router's admin panel often shows when the IP was last assigned (look for "WAN IP lease time" or similar)
• If you need a stable IP for logging purposes, consider asking your ISP for a static IP

Protecting Your IP Address Privacy

If you are concerned about IP-based tracking or want to hide your location from websites:

Use a VPN — Replaces your real IP with the VPN server's IP for all traffic. The most practical privacy solution for everyday use. How to hide your IP address →

Use Tor Browser — Routes traffic through multiple servers for stronger anonymity. Slower but more thorough.

Use mobile data — Your mobile carrier assigns a different IP from your home ISP, useful for quick IP changes.

Frequently Asked Questions

Can two devices have the same IP address? On the public internet, no — public IPs are globally unique. However, private IP addresses (like 192.168.1.5) can and do appear on millions of home networks simultaneously because they are only unique within each local network.

What happens if my IP address changes while I am browsing? Generally nothing noticeable. Most websites track sessions using cookies, not IP addresses. Some high-security applications (certain banking portals, VPNs) may log you out if your IP changes mid-session as an anti-hijacking measure.

Is my IP address the same on my phone as on my laptop? If both devices are on the same home Wi-Fi, yes — they share the same public IP address. If your phone is using mobile data, it has a completely different IP assigned by your mobile carrier.

Can websites block me by IP address? Yes. IP banning is a common moderation and security tool. If you are banned by IP, you can bypass it by changing your IP — restarting your router may get you a new IP from your ISP's pool, or you can use a VPN.

What does it mean when my IP shows the wrong city? IP geolocation is approximate. ISPs register their IP blocks to their headquarters or regional offices, not the customer's actual location. Your IP might show a city 50 miles away, or the ISP's main city if they use centralised registration. This is normal and expected.

Related Tools

Use the IP Lookup tool to see your full IP details including location, ISP, ASN, and timezone. Use the DNS Lookup tool to query DNS records for any domain. Check the IP Blacklist Checker to see if your IP is listed on spam databases. Use Domain Tools to look up WHOIS registration data for any domain.