using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

        var test2 = "+33 612145233";

           var cleanTel = test2.Replace(" ", "");

                var telephoneTronque = cleanTel.Length >= 9 ? cleanTel.Substring(cleanTel.Length - 9) : cleanTel;

        Console.WriteLine(telephoneTronque);

        var modelTel = new List<string> {"0sdfghjk612145233"};

        var allowed = modelTel.Any(e=> (e.Length >= 9 ? e.Substring(e.Length - 9) : e) == telephoneTronque);

        Console.WriteLine(allowed);

    }

}