How about, for the Netherlands, directly parsing the websites of the cabel providers
UPC has a clear page with the city's which can easily be parsed
Each city has it's own code:
http://upc.nl/frequencies_gm.php?GM=0305
Casema does the same thing
http://www.casema.nl/pagina/thuis/ra...enderoverzicht
MultiKabel
http://www.multikabel.nl/service-des...e-radio-en-tv/
Caiway:
http://www.caiw.nl/
having this info correct and upto date would realy help give the WAF a real kick