# Unrecognized number on your caller ID. Call it back? **URL:** \ **Category:** In My Humble Opinion\ **Created:** [December 8, 2010, 10:05pm UTC](https://boards.straightdope.com/t/unrecognized-number-on-your-caller-id-call-it-back/563471 "2010-12-08T22:05:30Z")\ **Posts on this page:** 5\ **Page:** 3
**Author:** ![Peremensoe](https://avatars.discourse-cdn.com/v4/letter/p/ce7236/32.png) [@Peremensoe](https://boards.straightdope.com/u/Peremensoe)\ **Post date:** [December 10, 2010, 4:05am UTC](https://boards.straightdope.com/t/unrecognized-number-on-your-caller-id-call-it-back/563471/41 "2010-12-10T04:05:44Z")
> [@control-z](#): > > I thought it was illegal to do telemarketing to cell phones? No. However, > [@FTC](#): > > FCC regulations prohibit telemarketers from using automated dialers to call cell phone numbers. Automated dialers are standard in the industry, so most telemarketers don’t call consumers on their cell phones without their consent. If they’re willing, or compelled by necessity, to dial numbers by hand, they can and do call cell numbers. You can [register](https://www.donotcall.gov/register/reg.aspx) both landline and cell numbers on the Do Not Call list, but that won’t block some categories of calls. > [@FTC](#): > > Because of limitations in the jurisdiction of the FTC and FCC, calls from or on behalf of political organizations, charities, and telephone surveyors would still be permitted, as would calls from companies with which you have an existing business relationship, or those to whom you’ve provided express agreement in writing to receive their calls. However, if you ask a company with which you have an existing business relationship to place your number on its own do-not-call list, it must honor your request. You should keep a record of the date you make the request. Aside from all that, you can always [investigate](http://800notes.com/) a mystery number without calling it back. If it _is_ an autodialing telemarketer, it’s almost certain you can identify them without dialing _or_ answering it. ---
**Author:** ![robby](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/robby/32/11048_2.png) [@robby](https://boards.straightdope.com/u/robby)\ **Post date:** [December 10, 2010, 2:56pm UTC](https://boards.straightdope.com/t/unrecognized-number-on-your-caller-id-call-it-back/563471/42 "2010-12-10T14:56:09Z")
I depends… I never call back a single unrecognized number. However, I will occasionally get repeated calls from the same number. One time I got six calls from the same number in two hours. I called them back, informed them that they had the wrong number, and asked them to stop calling me. ---
**Author:** ![lost4life](https://avatars.discourse-cdn.com/v4/letter/l/c4cdca/32.png) [@lost4life](https://boards.straightdope.com/u/lost4life)\ **Post date:** [December 10, 2010, 3:57pm UTC](https://boards.straightdope.com/t/unrecognized-number-on-your-caller-id-call-it-back/563471/43 "2010-12-10T15:57:07Z")
If it shows up a few times, I might, but usually not. I sometimes call numbers with a local area code, because my cellphone’s number is still from up north, so I know it’s probably not a wrong number. But mostly, no message=no callback. ---
**Author:** ![irishgirl](https://avatars.discourse-cdn.com/v4/letter/i/8edcca/32.png) [@irishgirl](https://boards.straightdope.com/u/irishgirl)\ **Post date:** [December 10, 2010, 4:19pm UTC](https://boards.straightdope.com/t/unrecognized-number-on-your-caller-id-call-it-back/563471/44 "2010-12-10T16:19:32Z")
I work in a GP surgery. If we call the number is blocked, and any messages left have to be very generic “Hi this is Dr irishgirl, please call me back as soon as you get this”, so that if challenged by a third party the patient can say that we called the wrong phone and _they_ certainly never went to see the doctor or if I really did call the wrong number that nothing confidential is said. An unrecognised or blocked caller ID and a confusing or absent message might be your doctor trying to protect your confidentiality. Just a thought. ---
**Author:** ![Khadaji](https://avatars.discourse-cdn.com/v4/letter/k/9e8a1a/32.png) [@Khadaji](https://boards.straightdope.com/u/Khadaji)\ **Post date:** [December 10, 2010, 4:55pm UTC](https://boards.straightdope.com/t/unrecognized-number-on-your-caller-id-call-it-back/563471/45 "2010-12-10T16:55:03Z")
A related (but pointless) story. I had a call a few years ago from a someone I needed to chat with, and his message was garbled, so I called the wrong number when I called him back. (He said he was leaving the office and I should call his cell, then the message was hard to hear.) When I realized that I had dialed a wrong number, I said: _I’m sorry, I have the wrong number._ Then I hung up. The man called me back daily for over a week demanding to know who I was and how I got his number. He left threats to call the police, left threats to come and “get me” and was just an all-around ass. [Previous page](https://boards.straightdope.com/t/unrecognized-number-on-your-caller-id-call-it-back/563471.md?page=2)