What Can Someone Do With Your IP Address?

Your IP Address Is Not a Secret

Every time you visit a website, send an email, or stream a video, the receiving server sees your IP address. This is fundamental to how the internet works - data needs to know where to go back to.

Your IP address is exposed in every online interaction. It is not hidden, encrypted, or secret. Every website you visit, every online game you play, and every app you use can see it.

But should you be worried? The internet is full of fear-mongering about IP addresses. Let us separate fact from fiction.

Want to see what your IP reveals? Check it now with What's My IP and then trace it to see exactly what the world can see.

What Someone CAN Do With Your IP

1. Determine your approximate location

Using an IP geolocation database, anyone can determine your approximate city and country. This is typically accurate to the city level but never to a specific street or building.

Try it yourself: enter any IP into our IP Lookup tool. You will see a city, region, and country, but not a street address.

TEXT

What they see:        Sydney, New South Wales, Australia
What they don't see:  42 Wallaby Way, Sydney

IP geolocation accuracy varies:

Country level: 95-99% accurate
Region/state level: 85-90% accurate
City level: 55-80% accurate
Street/house level: Not possible from IP alone

Read our detailed analysis of IP geolocation accuracy.

2. Identify your ISP

Your IP address is allocated to your ISP, so anyone can see which provider you use:

JSON

{
  "ip": "203.45.67.89",
  "org": "AS1234 Telstra Internet",
  "isp": "Telstra Corporation Limited"
}

This reveals your ISP name and their network identifier (ASN), but nothing about your specific account.

3. Target you with a DDoS attack

A Distributed Denial of Service (DDoS) attack floods your IP with so much traffic that your internet connection becomes unusable. This is the most serious thing someone can do with your IP.

DDoS attacks against home users are:

Annoying but temporary (changing your IP stops it)
Illegal in virtually every jurisdiction
Most common in online gaming disputes
Mitigated by simply restarting your router (to get a new dynamic IP)

4. Scan for open ports

With your IP, someone can scan for open ports on your network:

Terminal

# What an attacker might run
nmap -sV 203.45.67.89

If you have services exposed (like an unprotected security camera, NAS, or media server), an attacker could potentially find them. This is why you should never expose services to the internet without authentication and encryption.

Knowing your approximate city and ISP allows for slightly more convincing phishing attempts. An email saying "We noticed unusual activity on your Telstra account from Sydney" sounds more credible when those details are accurate.

6. Use your IP for targeted advertising

Advertisers use IP-based geolocation for location-targeted ads. This is why you see ads for local businesses even without sharing your GPS location. This is legal and standard practice.

7. Restrict or block your access

Websites and services can block specific IPs. If someone has your IP, they could potentially ban you from their server or service. This is commonly done in online gaming.

What Someone CANNOT Do With Your IP

This is where the myths need busting.

They CANNOT find your exact home address

Your IP address maps to your ISP's infrastructure, not to your physical location. ISPs do not publicly share which subscriber has which IP.

The only way to connect an IP to a physical address is through a legal subpoena to the ISP, which requires law enforcement involvement and probable cause.

They CANNOT hack your computer or phone

Your IP address alone provides zero access to your device. It does not bypass your operating system's security, your firewall, or your passwords.

Hacking requires exploiting software vulnerabilities, tricking you into running malicious code, or stealing credentials. Knowing your IP does not help with any of these.

They CANNOT access your files or photos

Your IP is a routing address, not a file path. There is no connection between knowing an IP and accessing data stored on a device.

They CANNOT monitor your browsing activity

Your IP tells them nothing about what websites you visit, what you search for, or what you do online. Only your ISP and the websites themselves can see your traffic.

They CANNOT steal your identity

An IP address is not personally identifiable information. It cannot be used to open bank accounts, steal passwords, or impersonate you.

They CANNOT remotely control your devices

No amount of IP knowledge allows remote device control. That requires malware, compromised credentials, or physical access.

Real-World Threat Assessment

Let us put the risks in perspective with actual threat levels:

Threat	Risk Level	Mitigation
Approximate location exposed	Low - City-level only, same as every website visit	VPN if concerned
DDoS attack	Low-Medium - Mostly targets gamers, easily fixed	Restart router for new IP
Port scanning	Low - Only a risk if you have exposed services	Keep ports closed, use firewall
Targeted phishing	Very Low - Requires additional information beyond IP	Standard email security practices
Identity theft	None - IP alone is insufficient	N/A
Remote hacking	None - IP alone provides no access	N/A

Who Actually Wants Your IP?

In practice, the entities that see and use your IP address are:

Every website you visit - For analytics, security, and content delivery
Your ISP - For routing and billing
Advertisers - For location-based targeting
Law enforcement - Only with legal process through your ISP
Peer-to-peer connections - Gaming, video calls, torrents
Network administrators - For security monitoring

None of these represent a significant threat to the average user.

When Should You Actually Worry?

There are legitimate scenarios where hiding your IP matters:

You are a journalist or activist in a country with internet surveillance
You are being stalked or harassed and want to minimize digital footprint
You use public Wi-Fi and want to encrypt your traffic
You need to bypass geo-restrictions for content access
You are a competitive gamer and want to prevent DDoS attacks

For these scenarios, learn how to hide your IP address.

How to Protect Yourself

If you do want to reduce your IP exposure, here are the most effective methods, ranked by effectiveness:

1. Use a VPN (Best overall protection)

A VPN encrypts your traffic and replaces your IP with the VPN server's IP: