NNC Coin Grading - National Numismatic Certification, LLC.
P.O. Box 701943
St. Cloud, Florida 34770-1943

Registrant Contact
Bob Johnson

Are they their own grading service?

Centsles.com
P.O. Box 621748
Orlando, FL 32862

Website Registered to

Uncommon Cents
P.O. BOX 26422
Tampa, Fl 33623

Technical Contact :
Robert Johnson

Coincidence, same person for both.