Pricing
Products
Get Proxies
Resources
Language
Pricing -70%
Dynamic Residential
Dynamic Residential Traffic (GB)
Suitable for: Data collection, market research, and data collection.
Starting from
$0.49 /GB
Dynamic Residential IP (Lines)
Suitable for: Email registration, web scraping, surveys, and other use cases.
Starting from
$0.027 /IP
Unlimited traffic - bandwidth
Suitable for: high-volume downloads of audio, video, and other data.
Starting from
$34.5/day
Unlimited Traffic - Port
Suitable for: questionnaire surveys, text and image downloads, and Brand protection.
Starting from
$0.31/Port/day
Static Residential
Products
Products
Dynamic Residential Traffic
Global resources with precise city-level positioning.
Unlimited Residential Traffic
Supports multiple ports and high bandwidth, unlimited traffic IPs with no extra fees.
Long-term Static ISP
Exclusive long-term static resources, providing unparalleled speed and reliability.
Popular Areas
Get Proxies
Resources
Get Started
Why Does My IP Address Change? Causes and Solutions
Liv Matilda Karlsson
2026-10-05
An IP address is like an identity used by devices when communicating online. When computers, phones, and routers connect to the internet, they use IP addresses to find and communicate with other devices. However, an IP address does not always stay the same. It can change when you reconnect to the network, when your internet provider assigns you a different address, or when you switch to another network.
Both public IP addresses and LAN IP addresses can change, but they work differently. A public IP address is used to communicate with devices on the internet. For example, when you visit a website, the website can see your public IP address. A LAN IP address, on the other hand, is used for communication between devices within a smaller network, such as a home or office network. So when people say “my IP changed,” they usually mean that their public IP address changed.
Why Does a Public IP Address Change?
Many home broadband and mobile networks use dynamic public IP addresses. Internet providers assign these addresses based on network connections and available address resources, so the same user may not always have the same public IP. The main reason a public IP changes is dynamic address allocation, while changes in the network connection can trigger a new assignment. Common situations include the following.
Reconnecting to the Network
When a home broadband connection is disconnected and then reconnected, you may receive a new public IP address. For example, restarting your router or reconnecting your broadband connection may trigger a new address assignment.
However, reconnecting does not necessarily mean that your IP will change every time. If the previous address is still available, you may receive the same IP address again.
Your Internet Provider Reassigns the Address
A dynamic public IP address is not permanently assigned to one user. Your internet provider may adjust address allocation based on available resources and network management. This means your public IP can change even if you did not actively switch networks.
For example, when an internet provider adjusts address ranges, performs network maintenance, or reallocates address resources, you may receive a different public IP when you reconnect. In other words, your public IP can change because of address management by your provider even when you have not changed your network settings.
Switching Networks
When you switch from home Wi-Fi to mobile data or connect to another Wi-Fi network, the public IP used by your phone or computer can change. This happens because different networks have their own internet connections and address allocation methods.
Even if you use the same phone or computer, changing the network can change the IP address that is visible to websites and other online services.
Why Does a LAN IP Address Also Change?
Public IP addresses are generally assigned by internet providers, while LAN IP addresses are usually assigned automatically by a router through DHCP. Computers, phones, and smart devices connected to the same home network will normally receive different LAN IP addresses.
The router assigns addresses based on the devices connected to the network. If a device reconnects, the router restarts, or the number of connected devices changes, the LAN IP assigned to a device may also change.
When a DHCP lease expires, the router may also go through the address assignment process again. However, this does not mean that the device will always receive a different address. If the previous address is still available, the device may continue using the same LAN IP.
If the IP that changed is a LAN IP, you should look at the router’s address allocation and connected devices rather than the reasons behind public IP changes. For most users, if the public IP shown by an IP lookup service has changed, there is usually no need to investigate the router’s DHCP settings.
How Often Does an IP Address Change?
There is no fixed replacement cycle for an IP address. How often it changes depends on the network type, the way the internet provider assigns addresses, and the device’s connection status.
Home broadband public IP addresses may stay the same for several days, weeks, or even longer. In some cases, the address may change after a single reconnection. The exact behavior varies between providers and network environments.
Mobile network public IP addresses usually change more frequently and are harder to predict. Reconnecting to the network or changes in the mobile network environment can cause the IP used for external connections to change.
LAN IP addresses are mainly affected by the router’s DHCP allocation. After a device reconnects, it may continue using its previous address or receive a new one.
Overall, mobile network public IP addresses generally change more frequently and are harder to predict than home broadband public IP addresses. LAN IP changes mainly depend on how the router assigns addresses. Instead of looking for a fixed answer to “how often does an IP address change,” it is more useful to observe the actual pattern of your network.
Why Does My IP Address Keep Changing?
If your IP address changes frequently, check it in this order: first see whether you have switched networks, then check whether the IP changes frequently while using the same network, and finally look for other network problems.
If you switch from Wi-Fi to mobile data or connect to a different Wi-Fi network, a public IP change is normal.
If you continue using the same home broadband connection but your public IP can change after every reconnection, this is usually related to dynamic address allocation. An occasional change does not necessarily indicate a network problem.
If the LAN IP is changing instead, check the router’s DHCP settings and connected devices.
It is also important to distinguish between occasional changes and frequent changes. If your IP is different when you check it every few days or weeks, this is generally a normal result of dynamic address allocation. But if the IP changes every time you reconnect or several times within a single day, it is worth paying closer attention.
If IP changes happen together with disconnections, frequent router reconnects, or slower network speeds, you may need to check whether the network connection itself is stable.
What Impact Does a Frequently Changing IP Address Have?
For ordinary internet use, an occasional public IP change usually does not cause major problems. However, if your work requires the same IP address or has specific requirements for the IP’s location, frequent changes can create additional management work.
IP allowlists: If a system uses an IP allowlist to control access, a public IP change may prevent the new address from passing verification. The allowlist may need to be updated.
Remote access: When remote access to a home or office network depends on a public IP address, a change may require you to confirm the current address and update related settings.
Web data collection: When collecting data from websites continuously, IP stability can affect address management and task continuity. Frequent changes may require additional handling of address records and connection settings.
Price monitoring: Price monitoring and web data collection both require information to be collected continuously. The difference is that price monitoring often also has location requirements for the IP address. If you need to monitor product prices in a specific region over a long period, both IP stability and location need to be considered.
How to Choose an IP When You Need Stability
If your business or project requires a stable IP, first determine whether you need a long-term fixed address. Then consider whether you have additional requirements for network type or location.
When You Need a Long-Term Fixed Address
If you need remote access or an IP allowlist and want to use the same address for a long period, you can consider a static IP. A static IP generally does not change frequently when you reconnect.
However, it does not mean that the address can never change. An internet provider may adjust it during network upgrades, address range changes, or business changes. These situations are uncommon, so a static IP generally remains stable during normal use.
When You Need a Specific Network Type
Static and dynamic describe whether an IP address remains fixed over time, while a residential IP describes the type of network the IP comes from. These are two different concepts.
A residential IP can also be dynamic or relatively stable. For example, if your business requires a home-network environment, you may need to consider a residential IP.
The right choice depends on your specific requirements for network type and IP stability. “Static” and “residential” should not be treated as interchangeable options.
When You Need a Specific Location
If you need to collect data from a specific location, such as for price monitoring or regional data research, you need to check whether the IP address is located in your target region.
If you only need one location, the main concern is whether the IP addresses in that location are stable. If you need several locations, you also need to confirm whether suitable IP resources are available in each target region.
| Use Case | Main Factors to Consider |
| Ordinary browsing | Usually no fixed IP required |
| IP allowlist | IP stability |
| Remote access | Fixed address |
| Web data collection | Stability, network type |
| Price monitoring | Stability, location |
| Regional data research | Location, network type, stability |
Conclusion
Public IP changes are usually related to dynamic address allocation. Reconnecting to the network, address reassignment by an internet provider, or switching networks can all cause a public IP to change. LAN IP addresses, on the other hand, are usually assigned by a router and follow a different allocation process.
There is no fixed replacement cycle for IP addresses. A home broadband public IP may remain unchanged for a long time, while mobile network public IP addresses usually change more frequently and are harder to predict.
For ordinary internet use, an occasional IP change usually does not require any action. But if your business or project requires IP stability, you need to consider your requirements more carefully. Start by deciding whether you need a long-term fixed address, then consider the network type and location. Static and dynamic describe IP stability, while types such as residential IP describe the network source.
Frequently Asked Questions
Can an IP address change?
Yes. Both public IP addresses and LAN IP addresses can change, but for different reasons. Public IP changes are usually related to provider allocation and network reconnection, while LAN IP changes are generally determined by the router’s DHCP allocation.
How often does an IP address change?
There is no fixed cycle. A home broadband public IP may stay the same for days, weeks, or longer, while it may also change after a single reconnection. Mobile network IP addresses usually change more frequently and are harder to predict.
Does restarting a router change the IP address?
It can, but not every restart will result in a new IP. After the router reconnects to the network, the provider may assign a new IP or continue using the previous address.
How can I keep my IP address stable?
If you need to use the same IP address for a long period, you can consider a static IP. If you also need a specific network type or location, those requirements should be considered together rather than focusing only on stability.
Telegram
Sales Manager
@proxy1024
Sales Manager
@proxy1024_com
Private transfers are not accepted. Please make the payment through the official website!
Emai
Official Email
support@1024proxy.com 
-Provide your account and describe the issue you encountered.
- We will respond within 24 hours.