How do I clear my WiFi Router history? 

How do I clear my Wi-Fi Router history?
Few routers actually log your actual browsing history
At most, they store the IP addresses of the sites you have visited.
However, that's still relatively unusual for the average router.
If you want to clear your Wi-Fi router history or system logs, the process is only a few steps away.
First, log into your router via your web browser.
Click Advanced and Settings.
Then, find the System log.
It may also be called “Administration,” “History,” or Logs.
Next, find the Clear button or Delete All button.
Your WiFi router history should be deleted.
Does Unplugging Router Delete History?
That depends on the router. Most routers won't store your log history if you unplug it. They tend to store only key configuration files to keep the router operating once you plug it back in.
Some router brands will store your history, so it's worth checking what model you have and what features it has. There are pros and cons to keeping your log history, even after unplugging it.
You can also factory reset your router to clear all history, but then you will have to set it up again.
How Long Does Router Keep History?
The length of time your router keeps your history varies depending on the device. Most routers only store your system logs, but some also store the IP addresses of websites and services visited.
Routers that store some form of history also often have options for how long you want them to keep such information.
It's also possible to delete the information as and when needed, as described above.
Check your router and its manual to see how long the default setting is for storing system logs or IP addresses.