1 other issue w. my new Norton.. ISP is attacking me :)

Several times per day, my Norton logs a handful of portscans...

 

Apparently the same ISP keep portscanning Port 53...

 

I traced the ISP # of the "attacker"... it's my ISP... I called them to verify, and it was them..

 

Why are they "attacking me"? Or is this some sort of false alarm?