This is from Call Wiki:

Additional Number Variations: 201/520/9603 - 201.520.9603 - 201 520 9603. The description we have for the 201 area code is: N New Jersey: Jersey City, Hackensack (see split 973, overlay 551). Since 201-520-9603 belongs to the 201 area code, we also know that the local time in UNION CITY, NJ is 15:42pm. The phone number 201-520-9603 is assigned to MCI WORLDCOM COMMUNICATIONS, INC., NJ and the actual exchange location is in UNION CITY, NJ. Technically, the telephone exchange switch is identified as NWRKNJ41DS0. Other phone numbers in the 201 area code that also have comments are 201-176-5056, 201-200-9999, 201-201-2424, 201-204-1294, 201-207-0667, 201-210-3618, 201-210-5381, 201-210-5418, 201-210-5437 and 201-210-5973. The owner of 201-520-9603 can be obtained through a detailed report. As well, the address and number type is also available in a detailed report. CallWiki END


Where else are they getting information about you? From those surveys that claim to reward you a “free” laptop or some other “free” doodad that'll end up costing you more money in the long run because of the crappy quality of the “free” whatever. You don't even have to finish the survey to give these bastards what they want – the teeniest bit of information about you. If you don't want the calls, don't fill out the surveys. It's as simple as that. I keep saying that there're “free lunches” anymore.

So you say that you put your name on the national DO NOT CALL LIST. Well, bully for you! That would take care of about 2% of your harassment calls, if that. These bastards who keep calling, though, don't play by ANY rules except their own. The best thing to do is for YOU to be vigilant about who calls you and make use of your phone company's BLOCKED CALLER LIST. You may complain about it being an extra expense you can't afford. Well, that's up to you. If you don't block them in some way, then you deserve to get those harassing calls. Don't sit back and depend on a national DO NOT CALL LIST to end those calls. If your phone company doesn't offer a BLOCKED CALLER LIST, find one who does. I think it's a small price to pay for not hearing about some new way to separate me from my money or lower my credit score.

If you're one of those people who feels they have to answer every single phone call, train yourself not to. You won't hurt a telemarketer's feelings by not answering, trust me. THESE BASTARDS DON'T HAVE FEELINGS. They don't care if you're a soccer mom hauling around a van load of kids or CEO of your company. They just want your money or information about you and they'll do whatever to get it. Not every phone call is so earth shatteringly important that you have to answer it!

Lastly, my question is why post a message to those bastards here that says, “Stop calling me!”? That does absolutely no good whatsoever. Are you people really THAT naïve to think posting a message to stop calling you is going to end the harassing phone calls? Think about it.
 Jul 15th, 2011
Rx pharmacy. Selling Viagra
Ed Herbst
 Dec 07th, 2010
no recoerding or voice when I answered. Nothing when I called it back either.
 Dec 07th, 2010
that number called me this morning while i was sleeping, i replied"what the f*ck do you want" then they hung up
 Nov 13th, 2010
Nasty man with Strong Indian Accent saying his name is Nick, YEah right, anyway, he was very rude when I was requesting to take a message for the person he was looking for/
 Nov 09th, 2010
called and did not leave message, just said New Jersey, we are on no call list but I guess that doesn't mean anything so why sign up?????
 Sep 10th, 2010
They said they were with "World PC Tec" and that they my computer had some viruses. They wanted me to turn on my computer and let them talk me through cleaning it up. I kept telling her "No", that I was not going to do that. She kept insisting so I hung up...
 Aug 31st, 2010
Oh darn, I couldn't get off the couch fast enough to listen to a sales pitch. Thank God for caller id with voice announce. somedays it made me move even slower!
 Aug 05th, 2010
This a-hole calls himself "Mike" - yeah, it's Mike like mine is Mohinder! I'm sick of these Indian callers trying to sound all friendly, thinking I'll listen if they use Anglican names. And they call my cell phone to boot. That's illegal. I told him to stop calling, but I doubt that will happen.
 Jul 27th, 2010
yea im tired of these scam asses all they do is us 2 pay there god dam job ive got kids 2 support and trying my best but all i do is get screwed
 Jul 21st, 2010
This person called an another person's home with an unlisted and blocked number. This person is also on the Do Not Call List......I could not totally understand them as they had an accent...they were told not to call this number again and erase it from their system. If they truly knew me or needed to contact me they should us my mailing address, if they were real they should have had that. I have not given out this number ever for any reason.
 Jul 21st, 2010