http://www.tech-supportphonenumber.com/ is a scam site running an Apple Support scam, their phone number is 833-419-0854
Now, on to the person who registered that domain:
Registrant Contact Information:
Name
SAHIL KHANNA
Organization
Address
7/115, TILAK NAGAR
City
NEW DELHI
State / Province
DELHI
Postal Code
110018
Country
IN
Phone
+91.7557481002
Email
[email protected]