Kilometer level wants to know insurance…

Hello! I’m with the Alliance and they want to know the mileage abruptly since last year. My breakfasts now: Is this only with the Alliance or other insurances also so where you get a letter? From how much km (e.g. divided at Allianz : up to 6,000km, 6-9,000km, over 9-12.000km etc.) from how much km you pay on it – is that different? Who is insured with the Alliance and has already had to do “experience” with it? Thanks for the answers!