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How to Use Call Blocking Services

Unsolicited Telemarketers Calling

Tired of getting the same call from the same annoying recording every day? When we sign up for new services our information gets sold sometimes. It’s unfortunate, but it happens. We’ve got telemarketers, credit card offers, and other unnecessary phone calls interrupting our days and sometimes we just want them to stop. Many phone providers offer a call blocking feature to stop these annoyances. Check out some of the big players below.


AT&T | CenturyLink | Comcast | Time Warner Cable | Verizon

AT&T Call Blocking

AT&T allows you to block up to 20 numbers and you must do so online. You cannot block partial numbers—they must be 10 digits long. Call Block and Call Screening cannot be used at the same time. When you block someone the caller will hear, “The number you dialed will not accept your call,” and the call will end.

How to block callers through AT&T

  1. Log in to myAT&T, if you don’t have an account register for one.
  2. At the top of the page select Home Phone, then Manager Features.
  3. From Call Filtering select the arrow by Call Blocking.
  4. For Call Blocking select On or Off.
  5. Add up to 20 numbers to the Add Number area. (Don’t forget area codes.)
  6. Select the Add button to the right after you’ve entered your number.
  7. Click Save.

After you’ve created your list of up to 20 phone numbers, you’ll need to turn Call Blocking on or off on your phone.

  • Turn On: Press *60#
  • Turn Off: Press *80#

How to remove blocked numbers through AT&T

  1. Log in to myAT&T.
  2. Click Home Phone, then Manage Features.
  3. From Call Filtering select the arrow by Call Blocking.
  4. Next to the number you want removed select the red X.
  5. Click Save.

CenturyLink Anonymous Call Rejection and Call Rejection

You can block incoming callers through CenturyLink to avoid unwanted calls with Anonymous Call Rejection or Call Rejection. You can read more details on these two features below.

Anonymous call rejection

This feature blocks calls from anonymous and private phone numbers. If someone calls anonymously or privately they hear the following, “The party you are calling does not accept blocked calls. If you are calling from a blocked number, please hang up, pick up the receiver, press *87 and redial the phone number. When you do this, your name and number will appear for this call only.”

Many areas offer this feature with Caller ID and some areas you must order it separately. This feature is automatically turned off so you’ll need to turn it on if you want to utilize the feature. Only anonymous and private calls are blocked. Out of area, unavailable, unknown, and not provided calls are still sent through.

Turn on

  1. Dial *77 on your receiver.
  2. Listen for the confirmation tone.
  3. Hang up the receiver.

Turn off

  1. Dial *87 on your receiver.
  2. Listen for the confirmation tone.
  3. Hang up the receiver.

Call rejection

Call Rejection allows you to block specific phone numbers. Just add the phone numbers to your “rejections list,” then the caller hears a message that says you are not accepting calls. Call Rejection lets you block more than 10 numbers and if you need to block up to 25 numbers you can get Enhanced Call Rejection in some areas. Call Rejection must be ordered and when you first install it it’s turned off. For a maximum of 25 numbers to block, we feel there are better options available.

Turn on

  1. Wait for dial tone and press *60.
  2. Follow the instructions to create a rejection list.

Turn off

  1. Wait for dial tone and press *80.
  2. Follow the instructions.

How to reject a call you don’t know the number to

Want to reject a call but you don’t know the caller’s phone number? You can reject the call when the person calls.

  1. Hang up the phone, pick up the receiver and dial *60.
  2. Follow the instructions.

Comcast calling security

Comcast has Call Screening and Anonymous Call Rejection. Call Screening allows you to choose 12 phone numbers to block. To learn more about these services read below.

Call Screening

Call Screening allows you to block 12 phone numbers. These callers will hear a message saying that you are not receiving calls at this time. You can activate this by dialing *60 from your Comcast phone or doing the following.

  1. On voice screen click Preferences (top menu, far right).
  2. Go to Call Manager/Call Screening (on left).
  3. Select Selective Call Rejection and enter the phone number

Anonymous Call Rejection

Anonymous Call Rejection blocks incoming calls from people who have blocked their caller ID and show up as anonymous or private on your caller ID. These callers receive a message that says you are not accepting calls from parties who have blocked their caller ID. Dial *77 from your Comcast phone to activate this feature.

Time Warner Cable Call Blocker

Time Warner Cable (TWC) has a few options for call blocking, so you only get calls from those you care about. The tricky part is that some of their features sound identical to others (e.g. Call Blocker Basic and Call Blocker Plus as well as Call Blocker Accept and Call Blocker Select).

Call Blocker Basic

With Call Blocker Basic you can block callers who won’t share their call ID information with you. If the caller shows up as private or unknown you won’t receive their calls if you have this turned on.

Turn on/off

  1. Log into your VoiceZone account.
  2. Select Settings.
  3. Click Edit next to Peace & Quiet.
  4. Select Call Blocker Basic/Plus.
  5. Turn Call Blocker Basic On or Off.
  6. Click Save.

Call Blocker Plus

TWC explains Call Blocker Plus as you are able to block unwanted calls from people who don’t send their caller ID info. This sounds the same as Call Blocker Basic to us.

Call Blocker Accept

Call Blocker Accept allows you to block up to 30 phone numbers. Blocked callers hear the following message: “The party you are calling is not accepting calls at this time.” TWC is working on increasing the number of calls a user can block from 30 to 100. The instructions for using Call Blocker Accept are the same as Call Blocker Select below, so to be honest we aren’t quite sure what the difference is between these two features.

Call Blocker Select

Call Blocker Select lets you specify what people can call you on that number by blocking up to 30 numbers. Currently you can only block numbers within the U.S.

Turn on/off

  1. Log into your VoiceZone account.
  2. Select Settings.
  3. Click Edit next to Peace & Quiet.
  4. Select Call Blocker Select.
  5. Turn Call Blocker Select On or Off.
  6. Click Save.

Add phone numbers to your list

In order to add phone numbers to your list, follow these instructions:

  1. Log into VoiceZone.
  2. Select Settings.
  3. Click Edit next to Peace & Quiet.
  4. Select Call Blocker Select.
  5. Enter 10-digit phone numbers under Add Phone Numbers to your Call Blocker Select.


If you want to avoid calls from automated systems like political parties and telemarketers you can do so with Nomorobo.

Turn on/off

  1. Log into your VoiceZone account.
  2. Select Settings.
  3. Click Edit next to Peace & Quiet.
  4. Select Nomorobo.
  5. Turn Nomorobo On or Off.
  6. Click Save.

Verizon Call Block

Verizon’s Call Block service is limited to a maximum of 6 or 12 phone numbers, depending on where you live. When a blocked caller reaches your phone number they will hear a message saying you are not currently taking calls. Phone numbers from outside your local calling area, through operator assistance, or from cell phones cannot be blocked.

Set up Call Block

  1. Listen for the dial tone on your receiver.
  2. Dial *60 or 1160 on rotary or pulse-dialing phones.
  3. Follow the recorded instructions.

To turn off Call Block dial *80 or 1180.

How to block phone numbers on your cell phone

Are you getting those annoying calls on your smartphones? No worries, you can block people on your cell phones too.

Block someone on your iPhone

  1. Go to Phone
  2. Click Recents
  3. Click the “i” icon next to the phone number you want blocked
  4. Scroll down and select Block this Caller
  5. Then confirm

Block someone on your Android phone

There are a few ways you can block a caller on your Android. The video below shows you your options.

We love hearing our phones ring

We live in a world where our phones are attached to us 24/7. Our ears are tuned in to listen closely for those notification sounds, letting us know someone is trying to reach us. It makes us feel important, it makes us feel good, but nothing is more annoying than taking the time to answer our phones and realizing it wasn’t important. Knowing the steps to take in order to block a phone number is important for our own sanity.

Do you have problems with unsolicited calls or a nosy relative wondering why you’re not married yet? Call blocking may be your solution.

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23 responses to “How to Use Call Blocking Services”

    • Hi Dolores,

      In the same section you blocked a number, you can unblock a number by following these directions:

      If you ever want to remove a number from the blocked list, browse back to “selective call blocking” and select the “remove” button next to the phone number you wish to remove. You’ll need to re-save your changes.

      Please let us know if you have any further questions!


  1. As Peter Blood stated, 30 numbers is not nearly enough when we are being deluged with that many numbers in just one week! I would like to know how, short of having the phone service disconnected, to simply STOP the calls. They come at all hours. If I try calling back to vent my frustration on them the number comes up as a number no longer in service. There has got to be a way to stop or block these calls with no limitation to the quantity of unwanted callers.

  2. It worked, only I put a little twist on it. I found my nearest FBI Office and put their number in. It forwards these un-wanted calls to them. Haha. Stopped the calls within 2 days. Wonder what they thought when the FBI picked up?

    • hahaha..I love that. Lots of info here. but none I can use. I just want to unblock someone from my landline and cannot find an answer anywhere..but yours is good for those annoying calls i get. YAY

  3. 30 numbers is pathetic with the volume of 800/866/877 robocalls, charities, contractors, etc. people are besieged with. TW CEO needs to get his head out of his posterior and get real. And don’t tell me it’s a “storage” problem as the amount of data is infinitesimally small compared to other services. Time Warner needs to do better by it’s customers.

    The only other way to deal with this is to buy a call blocking device or use the one on some phones. But it’s better to do it at the TW source since the phone can still ring once before the block sets in locally. We need UNLIMITED blocking of calls. It’s our right and way overdue. We pay enough for these services. Please make it happen, and sometime this decade.

  4. I’m getting delinquent notices in the mail, and it hasn’t even been turned off yet. Phone calls every day. As long as I pay by a certain day they won’t turn it off, but instead harass the **it out of me daily, either with a phone call, which I have now blocked, or mail. And my bill is only 160 bucks.

  5. I have been on this phone and online for over an hour trying to register to block a phone number. I finally got registered and went to voice zone, and my request got rejected. It said my info couldn’t be retrieved. Then I went to live chat, they told me to call 611 to block my phone number and I now am back where I started, on hold! What is wrong with these people? Do they think I have time to waste? I pay all this money for cable and this is the service I get? I am one unhappy customer, but what does Time Warner care as long as they get their money!

    • Do you have an iPhone? The iOS 7 update included a block/unblock feature that makes it easy to block phone numbers. I’ve used it since it’s been available, and it works great! I even tested it by blocking then unblocking my brother’s mobile number and landline number. Don’t pay for this service if you don’t have to!

    • Oh great. I have T/W. I dont want to be on the phone forever just to unblock someone. My daughter blocked somone on my phone and now I cannot get calls from her. So mad!!! Controlling children. OMG

  6. Ahhhh, finally! Call blocking lists on my digital phone. This is soooo money – I have been waiting for this foreeeeever. Cu later scumbag telemarketing and scam artist phone callers – I look forward to never hearing from you again.

  7. My neighbor tried calling my telephone number three times on Friday night and said my number was blocking her call. 

    How do I unblock her blocked number on my list?

    • Hi Carolin,

      We would recommend calling you phone service carrier and discussing this with them. Be sure to have your neighbors phone number on hand for this conversation. They should be able to identify and solve this issue.

      Best wishes, Michelle @ ASecureLife.com

  8. Neither direct instructions nor four months of unanswered, un-returned calls has clued a rejected suitor in to the fact that I no longer wish to communicate.  I was delighted to discover that TWC had this service. Thanks.

  9. Call blocking is okaaay… but that only works if you know who you want to block beforehand.  Better would be to implement a Call Screening feature that forces all callers (except perhaps those on a white list) to identify themselves.  Then when your phone rings, you get to press 1 to accept the call, 2 to reject it.  I get so many calls for surveys or for donations, and I just can't handle them anymore.  If Google Voice can do it, why can't Time Warner?

  10. The 800 service will by pass your block by using an alternative number and eventually fill up your 30 slots. To either kill their business, make people stop using it or just to harass the harasser. Go to the tab for "Call Forwarding" right next to the "Block Callers"tab and go to "Selective" Call Forwarding. Select the 800 Service number called and enter it. Use a blocked 800 Service number and enter it as the forwarding number. It will have telemarketers talking with telemarketers. I have filed over 30 complaints with the FTC's DoNotCall site against 800 Service and it doesn't stop em…so screw em instead.

  11. Time Warner's call blocking list is by far the coolest thing I've ever come across. You have no idea how many fake spam calls I was getting before on Bellsouth (landline). And, Bellsouth was almost twice as expensive as the digital phone. I don't think people realize how few telemarketing calls actually come from legitimate telemarketers. Based on the phone numbers here on this site, I'm seeing just how many spam calls are being made. It's no wonder the Do Not Call list isn't having much effect!

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