peculiar 137 outbound attempt

when visiting a website (www,greatis,com), i loaded a page, and suddenly i got an alert from comodo letting me know that “system” was trying to send an outbound udp to the ip of that website (206.67.56.207) via port 137. after blocking this, the same thing happened with another ip (213.244.183.204).

any guesses why?

seems to be happening more regularly now with other ips…