You might want to
trace that
route......................

Ok bad pun.
Using Schwarzl IP Checker yields this as an origin of the check that was done. That port is in a block reserved for traceroute.
I suppose that if this continues regularly from the same IP, you could call/email this guy and he might know how to stop it.
1020 Rincon Circle
San Jose, CA 95131
US
Netname: IVMG-SANJOSE-CA
Netblock: 66.79.128.0 - 66.79.159.255
Maintainer: IVMG
Coordinator:
Broyles, Mark (MEB5-ARIN)
noc@netvmg.com
408-678-3705