using System.Text.RegularExpressions;
public static void Main()
var regex = new Regex("^([0-9 ]{5,6}) (.*)$");
Console.WriteLine(regex.IsMatch("45646 asda asda 545 asda"));
var match = regex.Match("45646 asda asda 545 asda");
Console.WriteLine("Success");
Console.WriteLine(match.Value);
Console.WriteLine(match.Groups[1].Value);
Console.WriteLine(match.Groups[2].Value);