To block caller ID for an individual call, dial 1831 (or #31# from a mobile) then the number you are calling. Generally, this will make sure the person you are calling will not see your number.
Australia: *10# for Telstra services or *69 on Optus HFC Telephony network. This only allows one to return the last unanswered call, and can cost 35 cents per use.
Yes, you can withhold your number to make anonymous calls on a per call basis by dialing 141 before the number you want to call. See more information above under anonymous calls.
Dial *69. When you dial *69, you will be told any registered information about the caller, such as their name and address. You will also be given the option to call them back. Press 1 to call the number once you are prompted.
Activate Call Trace
Pick up the phone and press *57 (touch tone) or 1157 (rotary). You'll hear a confirmation tone and message will be heard If the trace is successful. You must keep a written log of the date and time of harassing calls to retrieve Call Trace information.
Does * 69 still work? However, if the caller dialed *67 before making that call, it blocks caller ID, so *69 won't work. The calling and calling the number, however, will be trapped by the telephone company, along with the *69, *67. So, it stays in the company's records, just won't work dialing.
Call return (*69) automatically dials your last incoming call, whether the call was answered, unanswered or busy. Call within 30 minutes, during which you can still make and receive calls. To deactivate while waiting for the party you are trying to reach to become available, dial *89.
*31# (Disable Caller ID)
If you want to keep your privacy and prevent others from knowing when you call them, you can disable caller ID by using this code.
Stop your number showing
To block caller ID for an individual call, dial 1831 (or #31# from a mobile) then the number you are calling. Generally, this will make sure the person you are calling will not see your number. If you have problems with caller ID, complain to your telco.
If necessary, callers can still be traced even if they have used the '141 number withheld' facility. Ask your phone service provider for details. Avoid leaving your name or your number in the opening messages of any answering machines or services that you use.
A person who calls you may have blocked their caller ID using *67. Dialing this before a number basically hides their number from the person they're calling, and prevents anyone from calling them back.
How do I unblock Caller ID to a certain number? To deactivate Caller ID Blocking for a specific number: Enter *82.
Beaming's 1471 Call Return service tells you the last number that called – unless the caller withheld their number by dialling 141 before dialling your number. 1471 Call Return also lets you return the call straight away, by pressing 3. 1471 is always active and useful even if you have an answering machine.
*67 - Caller ID Block: Hides your phone number on Caller ID systems. *69 - Call Return: Redials the last number that called you. *70 - Call Waiting: Places your call on hold so you can answer another.
*77 – Anonymous Call Rejection: Blocks calls from private callers. *80 – Disable Call Block (*60). *82 – Disable Caller ID Block (*67). *87 – Disable Anonymous Call Rejection (*77).
Did you know there are similar numbers you can dial to respond to these anonymous callers? The first one is *69, which traces the number of the last person who called you. It works even for anonymous or hidden calls, so you can get the phone number and the exact time they called.
Unfortunately, providers cannot tell you the name of an unknown caller. Otherwise, user privacy and legitimate callers could get violated. Whether you call your cellphone provider or your landline provider, you can't get this information from a carrier because they also do not track unknown callers.
Private numbers, blocked, and restricted calls can usually be traced. However, unknown, unavailable or out of area calls are not traceable because they don't contain the data needed for a successful trace.
Call barring lets you block incoming or outgoing calls to and from your phone. This may be useful if you keep receiving unwanted telemarketer calls or want to avoid expensive international calls. To check if the feature is enabled on your device, dial *#33#. Use the code *33*pin# to enable call barring on your iPhone.
*777# is Glo's USSD short code which enables customers to recharge their Glo lines from their bank accounts.
##002# - If your voice call or data call, or SMS call has been forwarded, dialling this USSD code will erase them.