Mywifiext.net is the local web address of Netgear Extender. Local web address means the setting panel saved on the index file of the firmware. When a user access to this web addresses www.mywifiext.net on the web browser then the browser redirect to the index file and it asks for the username and password.
After entered the correct username and password the Netgear Genie page opens up where the setting can be changed.
As www.mywifiext.net is a local web address to access of your netgear range extender where you can make both basic an advance changes and these changes can be in the wireless setting through mywifiext.net and you can customize settings according to your needs.
In other words we can say that WWW.MYWIFIEXT.NET is a local web address used to get to the setup page or to open Netgear Smart Wizard on your computer screen for the initial setup of your Netgear Range Extender. So you can say that WWW.MYWIFIEXT.NET is not a regular internet website.
sometimes when you try to get on www.mywifiext.net for setting up your Netgear Range Extender you might receive an error message which says this site can't be reached and these can change from browser to browser i.e. error message will be different for internet explorer , different for chrome , different for safari. And this www.mywifiext.net will only open up when you device is either connected physically via Ethernet or wirelessly.