Many Internet users wonder: Why does my IP change every time I reboot my router? While it may seem like a technical issue, it’s actually very common and expected behavior. In this article, we’ll explain why it happens, how IP addresses are assigned, and what to do if you need a stable IP.
What is an IP address and how is it assigned?
An IP address (Internet Protocol) is a unique number that identifies your device or network on the Internet. It can be either dynamic or static:
- Dynamic IP: changes periodically, usually when the router restarts.
- Static IP: remains the same over time and usually requires a paid service.
Most home ISPs assign dynamic IPs because it’s more efficient. Every time your router reconnects, the ISP’s DHCP server gives it an available IP.
Why does my IP change when I restart my router?
Restarting your router breaks the session with your ISP. When it reconnects, it requests a new IP. You may receive the same one if it’s still free, but often you’ll get a different one. This is due to:
- Dynamic allocation policies
- Lease time expiration
- IP availability at the time of reconnection
If you check your IP on Cualesmiip.com before and after rebooting your router, you’ll likely see different results.
Does this affect me as a user?
Usually no, but in some cases, a changing IP can cause issues:
| Scenario | Possible impact |
|---|---|
| Using remote desktop apps | You might lose access if the IP changes |
| Accessing servers or IP cameras | Reconfiguration might be needed |
| IP-based location services | Your location may appear different |
How can I tell if my IP is dynamic or static?
- Visit Cualesmiip.com and note your IP.
- Restart your router and check again.
- If it changed, your IP is dynamic.
Can I change or fix my IP address?
Yes. Here are your options:
- Change your IP address: helpful for avoiding bans or accessing content.
- Request a static IP: usually for an extra monthly fee.
- Use a VPN: lets you mask your real IP and choose a different one.
Is there any privacy benefit?
Dynamic IPs add a minor layer of privacy, since they change over time. However, they don’t make you anonymous. If privacy is a concern, consider hiding your IP with a VPN, proxy or Tor network.
What if my IP doesn’t change after rebooting?
This may mean your ISP uses persistent dynamic IPs, which stay the same for longer. It doesn’t mean you have a true static IP unless you specifically pay for one.
Technical summary: what happens during a reboot
- The router disconnects from the ISP.
- It reconnects and asks for a new IP.
- It gets the old IP if it’s free, or a new one otherwise.
How can I prevent my IP from changing?
- Use dynamic DNS services (DDNS).
- Pay for a static IP from your provider.
- Leave the router on for longer periods.
Where can I see my IP now?
Use our free tool to know your IP and check your current location, ISP, browser and OS.
In this article we’ve learned that...
- It’s normal for your IP to change after rebooting the router.
- Most users have dynamic IPs assigned by their ISP.
- This change usually has no negative impact.
- You can change, fix or hide your IP if needed.
