
If you want to hide your phone number when calling someone from Australia, you can dial #31# before the number you want to call. This will block your caller ID and your number will appear as private or unknown on the receiver's phone. This method works for both landlines and mobile phones. Alternatively, you can dial 1831 before the number to achieve the same result. However, this method might redirect your call to voicemail as many people don't answer calls from unknown numbers due to spam.
| Characteristics | Values |
|---|---|
| Code to hide number | #31# |
| Code to hide number from landline | 1831 |
| Code to unhide number | *31# |
| Code to unhide number from landline | 1832 |
| Fee for hiding number from landline | $2.93 per month |
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What You'll Learn

Dial #31# before the number to hide your number
If you want to hide your phone number when making a call in Australia, you can dial #31# before the number you are calling. This will block your caller ID, and your number will appear as private or unknown on the recipient's device. This method works for both mobile phones and landlines, allowing you to make your number unlisted or hidden on a call-by-call basis.
To use this feature, simply dial #31# followed by the phone number you wish to call. For example, if you're calling the number 0123 456 789, you would dial #31#0123 456 789. This will ensure that your phone number is hidden from the person you are calling.
It is important to note that blocking your caller ID may not work when calling certain telco providers or emergency service numbers, such as 000 and 112. In these cases, your phone number may still be displayed. Additionally, your number will always be visible when sending text or multimedia messages, even if you have blocked your caller ID.
By dialling #31# before the number, you can make your phone number private or unknown to the recipient. This can be useful in various situations, such as when making business calls from your personal phone, selling items online, or when you want to keep your number confidential for privacy or safety reasons.
In addition to dialling #31#, there are other methods to hide your phone number in Australia. One option is to contact your service provider and request a silent or unlisted number. Some telcos may offer this service for a small monthly fee or as part of their privacy features. You can also use a second number for your phone by utilising apps or services specifically designed for this purpose. These options can provide you with an additional layer of privacy if you frequently need to make calls without revealing your personal number.
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Dial 1831 before the number to hide your number
If you want to hide your phone number when making a call in Australia, you can dial 1831 before the number you are calling. This will block your caller ID, and your number will not be displayed on the recipient's phone. This method works for both landlines and mobile phones.
Dialing 1831 is a temporary way to block your caller ID on a call-by-call basis. If you want to permanently block your caller ID, you can contact your phone service provider and request this service. There may be a small monthly fee for this.
Additionally, on mobile phones, you can also dial #31# before the number you are calling to hide your number. This method is also temporary and applies to individual calls.
It is important to note that blocking your caller ID may not work when calling certain telcos or emergency service numbers, such as 000 and 112. In these cases, your number may still be displayed.
By using these methods, you can protect your privacy and choose when to disclose your phone number when making calls in Australia.
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Hide your number by default in your smartphone settings
If you want to hide your number by default on your smartphone, you can do so by changing your settings. The process varies depending on your device, but here are some general instructions for iOS and Android phones:
For iPhones:
Go to Settings > Phone > Show My Caller ID and turn it off.
For Android phones:
Go to Phone > Settings > Call Settings > More Settings > Caller ID and turn it off.
For other devices:
If you don't have an iPhone or Android phone, you can try looking for a similar option in your device's settings. Alternatively, you can contact your service provider and ask them to hide your number. In Australia, Telstra offers this service for a small monthly fee.
Once you've hidden your number by default, your number will not be displayed when you make calls or send text messages. However, keep in mind that some people may be hesitant to answer calls from private numbers.
If you don't want to hide your number by default, you can also choose to hide it on a call-by-call basis. To do this, simply dial #31# before the number you want to call, and your number will appear as private. This method works for both mobile phones and landlines in Australia.
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Call your service provider to hide your number
If you want to hide your landline number, you can call your service provider and request that they hide your number. For example, if you are with Telstra, you can call them and follow the prompts until you reach the appropriate person, then ask them to hide your number. This will also mean that your personal details, like your name, number, and address, will not be published in directories such as the White Pages or any directory assistance services. There may be a small monthly fee for this service; for instance, Telstra charges $2.93 per month.
If you are being harassed by phone calls from hidden numbers and you think you know who it is but need confirmation, you can call a professional private investigation service, such as Precise Investigation, to confirm the source of the calls. Their services are available across Australia's major cities, including Melbourne, Sydney, Perth, Brisbane, Adelaide, and Hobart.
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Use a second number to hide your primary number
If you want to hide your primary phone number, you can get a second number for your phone without needing a separate SIM card. There are various apps and businesses that offer a second number, allowing you to message and make calls from your device without revealing your primary number.
- Buzzy App or BurnerPhone: These apps provide a second number for messaging and calling.
- Sonetel: For a more professional option, Sonetel offers an Australian number for a small monthly fee.
- Google Voice: Google Voice is free and allows you to make and receive calls with your Google Voice number through the app. However, it's important to note that Google Voice is not currently available in Australia.
- VoIP: You can buy a VoIP number and set up a sip client on your phone. Services like SipTalk offer local Australian numbers with additional features like voicemail to text and phone redirection.
By using one of these options, you can effectively hide your primary number and maintain privacy when making calls or sending messages.
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Frequently asked questions
To hide your number on a call-by-call basis, dial #31# before the number you want to call. This will make your number appear as 'No Caller ID' or 'Private' on the receiving device.
To permanently hide your number, you can call your service provider and request that they enable an 'unlisted service'. This may incur a small monthly fee.
To check if your number is hidden, dial *#31# and press the call button. You will then receive a message indicating whether your caller ID is restricted or unrestricted.
Yes, you can hide your number on a call-by-call basis by dialling #31# before the number. Additionally, you can make your number private by default by changing your settings. On an iPhone, go to "Show My Caller ID" and switch the toggle to the off position. On Android phones, the process may vary, but you can typically find a similar option in the settings.
There are several legitimate reasons why someone would want to keep their phone number private. For example, you may want to give feedback about a product without wanting the company to store your number for future sales calls.










































