WiFi Network Name
I have recently seen the following as a password-protected network name in iOS 15 > Settings > WiFi and also on my Mac in WiFi (menubar) > Other Networks: [range]_E30AJT7113426V
I don't know exactly when this first appeared.
Here's what I've done to check this out:
Walk out of house: network name disappears about 10 feet or less from house in any direction
(As our house is on a 5-acre lot, with forest all around, I think this eliminates any neighbor's WiFi.)
Drive away: network name never reappears, although many other potential WiFi networks appear as we reach town.
Shut down each of two Macs in our house: [range]_E30AJT7113426V remains
Shut down external drives: [range]_E30AJT7113426V remains
Shut down WiFi printer: [range]_E30AJT7113426V remains
Shut down (at breaker box) Samsung "Smart Things" range: [range]_E30AJT7113426V remains (not a joke; I seriously wondered)
We have no Personal Hotspots set up on either of our iPhones. Our iPad does not have cellular.
Recent changes in our Mac environment:
Newish 24" M1 iMac.
New Mac Studio
New Studio Display
Mac Studio, macOS 12.4