For years, I've been collecting information from all around the web about which mobile network operator has how much bandwidth in which bands. Such information is quite helpful when it comes to understanding strategies and arguments in debates. No need to do that anymore as CEPT has just released a very comprehensive document giving an overview of spectrum owners for all European countries for the 800 MHz digital dividend band, the 900 MHz GSM/UMTS band, the 1800 MHz GSM/LTE band, the 2100 MHz UMTS band and the 2600 MHz LTE band. Here's the link to the page and here a link directly to the document ('ECO Report 03'), enjoy!
With mobile network operators using more and more radio systems (GSM, UMTS and LTE) simultaneous and on many different frequency bands, it's getting a bit difficult with traditional network coverage maps to find out where what kind of mobile device can be used. Some network operators have therefore now begun to diversify their maps with options to show different technologies and different frequency bands different colors.