Dialing *64 on a phone (often in North America) is a Feature Access Code that typically blocks all incoming calls from unspecified or general callers, redirecting them as if rejected, while allowing calls from your 'allowed' list (if set up) or disabling blocking for specific numbers, depending on your service provider's settings, often used for temporary call blocking. It's part of a system of "star codes" that control features like caller ID and call forwarding.
*64 | All Other Callers: Block
All other calls (not otherwise specified in Call Handling settings) will be blocked.
*69, a code widely available in North America, allows you to redial the last incoming call that you missed. The service is provided by most telephone service providers and operates by storing the caller's phone number, allowing you to quickly connect back to them.
Yes, \*67 still generally works on most U.S. carriers to block your caller ID for a single call by dialing \*67 followed by the number (e.g., \*675551234567), showing up as "Private" or "Blocked," but it won't work for toll-free or emergency numbers and may be blocked by some recipients. This per-call feature hides your number but doesn't change your phone's settings permanently, and you can use other methods like carrier settings or apps for consistent blocking, notes USA Today and Times of India.
About Selective Call Forwarding (*63)
Selective Call Forwarding lets you program your office phone to direct incoming calls from specific phone numbers you have pre-selected to a different number - such as your cellular phone - when you're away from your office.
This Vertical Service Code, *82, enables calling line identification regardless of subscriber preference, dialed to unblock withheld numbers (private callers) in the U.S. on a per-call basis.
Call forwarding is often enabled by dialing *72 followed by the telephone number to which calls should be forwarded. Once someone answers, call forwarding is in effect. If no one answers or the line is busy, the dialing sequence must be repeated to effect call forwarding. Call forwarding is disabled by dialing *73.
The person you blocked will not realize you blocked them when they try to call you. On their end, they'll hear the phone ring a few times. Then, their call will go straight to voicemail.
It's important to know that *67 only hides your number from the person you're calling. It doesn't make you completely anonymous. Your call can still be traced by phone companies or authorities if needed. If *67 isn't working on your iPhone, it could be due to settings on your device or restrictions from your carrier.
To hide your number on an Android:
Dialing *77 activates Anonymous Call Rejection, blocking incoming calls from private or blocked numbers on landlines and some mobile services, making anonymous callers hear a message that you don't accept their calls. To turn it off, dial *87, and remember that this feature only blocks intentionally hidden numbers, not calls marked as "Unavailable" or "Out of Area," and can sometimes route to emergency services in certain areas or for specific carriers, so check with your provider.
What is BT 1471? BT 1471 tells you the last number that called - unless the caller withheld their number by dialling '141' before dialling your number, or the call came from a switchboard extension number. 1471 Call Return also lets you return the call straight away, by pressing '3'.
To prevent an outbound call from being interrupted, press *70 before entering the phone number. Call Waiting is reactivated automatically once your call is complete. Call waiting with Caller ID identifies incoming calls when you're on the phone.
*97 Pick up a call for another user in the same group.
In North America, which has a country calling code of +1 , it is a common error to drop the + in front of the number and write it like 1-555-123-4567 . This is technically incorrect. To call this number from Japan, where the international call prefix is 010 , one may dial either +1 555 123 4567 or 010 1 555 123 4567 .
To hide your number for one call, enter 141 before the number you're calling. If you've hidden your caller identity, enter 1470 before the number to show it for that call. If you want to hide your number for an international call, enter 00 instead of + before the number you're calling.
You can also use *82 to unblock your number in case your call gets rejected temporarily.
If you want to stop phone tracking, you can change your phone settings, switch to a private browser, configure your app permissions more carefully, or use a VPN.
It depends on your end goal. If you are doing this to get them back then just ignore. If you just want to move on then block. If your goal is to hurt them, I would advise not to.
When a blocked person calls your number they are sent to voicemail, and they can still leave voicemail, so check that section of the phone app. Voicemails that were from a blocked contact may appear in a "blocked contacts" section of voicemail or something like that.
Signs you may have been blocked
If you have an iPhone and text another iPhone but don't see a “Delivered” notification, someone may have blocked you. (Android phones don't automatically show these messages.) The same goes for if you consistently see a green text bubble instead of a blue one on your iPhone.
What Does ##002# Really Do? 🔐📞 ##002# instantly cancels all call forwarding on your phone — busy, unreachable, or no-answer. It's a simple way to reset settings and protect your privacy.
How to turn on call forwarding on Android. Open the Phone app. For Pixel: Tap More (three dots) > Settings > Calling Accounts > [your carrier] > Call Forwarding. For Samsung: Tap More (three dots) > Settings > Supplementary Services > Call Forwarding (SIM1 or SIM2) > Voice Calls.
Call Retrieve Used to retrieve a parked call. Enter *88 followed by the extension that call is parked against. If the call is parked against your own extension, press the # key.