Best DX on 6m JT65 for some years

UN7TW (5214km) in southern Kazakhstan (MN52 square) was spotted on 6m JT65 earlier today. This is a very long way for a VHF band!  A reminder that I am just using a V2000 vertical omni antenna, so nothing special. It bodes well for transatlantic 6m reception. I assume this was some form of Es.