Got a call from 201-716-4468 today.. Male on other end seemed to be faking tone of his voice asked to speak to "the person who handles security for this website" and when told "how may I help you" he hung up.
"Tom" called and left a message from 201-716-4468 but listed his callback # as same but with -4771 at end. I knew he was bs'ing because the secure domain he cited, which I maintain, doesn't expire till late 2011.
One of our clients who has an SSL certificate due to expire got this call. I called back, they verified the domain name and explained that they were from Comodo (not the company handling the old certificate.) So basically Comodo goes through WHOIS records and searches for certificates that are due to expire and solicits business. The person I talked to was however fairly clear that they were offering "a better deal" i.e. not pretending to be the current certification authority. However it took a while before they stated what company they were with (initially the call was answered with a non-descript "hello.")