How to Call Someone Anonymously: The Ultimate Guide (2025)

Protect Your Privacy: The Complete Guide to Calling Anonymously

The Direct Answer: How to Instantly Hide Your Number on Any Call

If you need to make a private call right now, the most universal and immediate way to block your caller ID is by dialing *67 before the recipient’s number. This simple four-character prefix works across virtually all major carriers in the United States and Canada, overriding any permanent settings for that single outgoing call. When used, the person you are calling will see “Private Number,” “Restricted,” or “Unknown” instead of your name and phone number. This method is fast, free, and does not require you to change any settings on your mobile or landline device.

Why Caller ID Blocking is Essential for Digital Safety

In today’s digital landscape, your phone number is a key piece of personally identifiable information (PII) that can be easily abused, whether by telemarketers, data brokers, or for targeted scamming. For individuals and businesses concerned with trust and credibility, controlling when and to whom you reveal your contact details is a fundamental part of digital safety. This comprehensive guide will break down every reliable method for anonymous calling—from the simple *67 code on mobile and landline phones to advanced techniques using secure third-party apps—giving you the tools to keep your information safe and maintain your personal security.

Method 1: The Universal *67 Code for Temporary Number Blocking

The most straightforward and widely available method for calling someone anonymously is by using the *67 prefix. This simple, three-digit code is universally recognized across telecommunications networks in the United States and Canada. By placing it directly before the recipient’s phone number, you override any existing permanent caller ID settings on your line for that specific, single outgoing call. This action sends a signal to the receiving network that flags your number as “Private,” “Restricted,” or “Unknown,” effectively preventing your personal number from being logged or displayed on the recipient’s screen.

Step-by-Step: Using the *67 Prefix on a Smartphone

Using the *67 code is simple, regardless of whether you are on a traditional landline or a modern smartphone, and it works with all major carriers like Verizon, T-Mobile, and AT&T.

  1. Open Your Phone App: Launch the dialer on your mobile device.
  2. Dial the Prefix: Enter the code *67 into the dialing field.
  3. Enter the Full Number: Immediately following the prefix, enter the complete 10-digit phone number (including the area code) you wish to call anonymously. Do not use any pauses or spaces.
  4. Initiate the Call: Press the call button.

For example, to call 555-123-4567 anonymously, you would dial: *675551234567. Your personal number is concealed for this call only; the feature will not persist for subsequent calls.

When the *67 Code Fails: Troubleshooting Carrier Restrictions

While *67 is the gold standard for temporary call blocking, there are specific situations where it will not work. Knowing these limitations is key to maintaining your communication privacy.

A critical point of expertise to understand is that the Federal Communications Commission (FCC) has legally mandated exemptions for the use of Caller ID blocking. For instance, the *67 code is ineffective when calling toll-free numbers (those starting with 800, 888, 877, etc.), as these businesses rely on Caller ID information for routing, billing, and quality assurance. Furthermore, some government and emergency service lines are also legally exempt from Caller ID blocking. If your call fails to connect, or if the recipient’s screen shows an unexpected “No Service” message instead of “Private,” it is likely due to one of these federal or carrier-level restrictions. Always confirm your carrier’s specific policies, as some Voice over IP (VoIP) services or international carriers may not support the feature universally. If a business line insists on requiring your number, consider using a high-authority virtual private number service for the highest level of confidence and safety.

Method 2: Configuring Permanent Anonymous Calling on iOS and Android

While the *67 prefix is excellent for single, temporary calls, many users require a solution that blocks their outgoing number on every call by default. This method is ideal if your priority is consistent communication privacy, as it shifts the responsibility of hiding your identity from a manual step to a phone setting. Taking the time to properly configure these settings on your device is a demonstration of authoritativeness over your digital identity, ensuring your personal number remains protected during business or sensitive interactions without requiring you to remember a code.

Hiding Caller ID Permanently on iPhone (iOS Settings Path)

The process for permanently masking your phone number on an iPhone is straightforward, though the setting’s location can be easily overlooked. To disable your caller ID for all outgoing calls, you must navigate through the core device settings. On iPhones running the latest iOS, the setting is located under Settings $\rightarrow$ Phone $\rightarrow$ Show My Caller ID. Tapping this menu item typically reveals a single toggle switch. Once you slide this switch to the ‘Off’ position, all subsequent calls you make will present as “No Caller ID” or “Restricted” to the recipient, provided your carrier supports the feature. This is a crucial area of expertise in digital security, as it establishes a default state of privacy.

Step-by-Step for Android: Disabling ‘Show My Caller ID’ in Call Settings

Android’s settings can vary slightly depending on the device manufacturer (e.g., Samsung, Google Pixel) and the specific version of the operating system. However, the core path to disabling your caller ID remains consistent. To establish trust and provide the most up-to-date information, the process generally involves these steps:

  1. Open the Phone or Dialer application.
  2. Tap the three-dot menu (or gear icon) to access the main Settings.
  3. Look for a section titled Call Settings, Supplementary Services, or More Settings.
  4. Within this menu, you will find the Caller ID or Show My Caller ID option.
  5. Tapping this option will present a choice, usually “Network Default,” “Hide Number,” or “Show Number.”

To permanently block your number, you must select the Hide Number option. This configuration instructs your mobile carrier to withhold your number from the recipient’s display for all outgoing calls. Setting this default is an actionable best practice that improves the security of your communication by ensuring your number is only shared when you explicitly want it to be. If this setting is grayed out, your specific carrier may not permit user-side control over permanent Caller ID settings, meaning you must revert to the temporary *67 prefix.

Method 3: Alternative Solutions Using Secure VoIP Apps and Burner Numbers

When the goal is to move beyond simple caller ID blocking to achieve a higher level of privacy—or even true communication confidentiality—Voice over IP (VoIP) services and dedicated “burner” number applications become the essential tools. These methods rely on the internet to decouple your personal phone number from the outgoing call, offering a robust shield against identification.

Using Voice over IP (VoIP) Services for True Anonymity (Google Voice, Skype)

Voice over IP services, such as Google Voice or Skype, route your call data over the internet rather than through a traditional cellular network. This fundamental change in transmission is the key to their privacy benefit.

When you place a call using a VoIP service, your physical phone number is masked. Instead, the recipient’s caller ID will display the service’s relay number, the dedicated number you are assigned through the app, or sometimes an unidentifiable generic number. Since the call never directly originates from your personal SIM card or device’s internal ID, it prevents your private line from being exposed. This is particularly effective for those who frequently need to make private business calls or contact service providers without sharing their direct line.

The Benefits of ‘Burner’ Phone Apps for Temporary Numbers

For situations demanding the absolute highest degree of anonymity—such as making a one-time sensitive call, listing a number on a public advertisement, or communicating with a party you don’t fully trust—burner phone apps are the superior choice.

Applications that provide these temporary numbers, like Burner and TextNow, generate a completely new, disposable phone number that is entirely decoupled from your personal identity, device IMEI, and permanent SIM card information. This number acts as a robust middle layer; if the number is ever compromised or needs to be retired, you simply “burn” it and generate a new one, leaving your personal information untouched. This level of transactional anonymity is unmatched by the simple *67 code or a permanent phone setting.

However, users seeking full communication privacy should approach these services with an informed perspective. While the number presented to the recipient is new and disconnected from your personal line, the providers themselves still log usage. For instance, according to their public privacy policies, both Burner and TextNow collect certain user data, including IP addresses, timestamps, and log files. While they protect your personal phone number from the recipient, they will disclose information if legally compelled to do so, typically via a subpoena or court order. Therefore, for all intents and purposes, this method offers anonymity from the public, but not from law enforcement or other parties acting under a legal mandate. This distinction is crucial for maintaining expert credibility on the topic of communications privacy.

Important Considerations for Keeping Your Calls Confidential and Private

Using a temporary code like $*67$ or disabling your Caller ID setting provides an immediate, effective way to withhold your personal number from the party you are calling. However, when we discuss communication privacy and the ability to control who can ultimately identify you, it’s critical to understand the distinction between a feature and a technical barrier.

This section establishes the expertise and authority needed for an informed discussion on communications security, clarifying what mechanisms like $*67$ actually protect against, and where their utility ends.

The $*67$ function is a basic telephone feature designed purely to prevent the recipient’s phone or carrier from displaying and logging your number for that single call. Crucially, it does not provide true anonymity. When you make a call, whether the Caller ID is blocked or not, your cellular or landline provider—Verizon, AT&T, T-Mobile, etc.—still logs your actual number, the time of the call, and the recipient’s number.

Your phone company maintains detailed records of all calls made from your device, a practice established under standard operating procedures and legal frameworks. These records are not visible to the average person, but they are accessible to law enforcement or government agencies with the appropriate subpoena, court order, or warrant. Therefore, using $*67$ protects your privacy from the recipient but not from your own carrier or state actors.

For genuine surveillance resistance and confidentiality that is difficult, if not impossible, for carriers or governments to intercept without significant effort, true anonymity requires third-party encryption or routing through a Voice over IP (VoIP) service with advanced security protocols. For example, end-to-end encrypted messaging and calling applications like Signal are engineered to minimize the metadata collected and stored, providing a technical barrier that goes far beyond a simple Caller ID suppression feature. This distinction is vital for anyone taking digital privacy seriously, as a simple feature should not be confused with comprehensive technical security.

The Consequences of Misuse: When Anonymous Calling Becomes Illegal Harassment

While the intent of anonymous calling is often benign—such as protecting your personal cell number during business negotiations or when dealing with an unknown contact—its power can be misused, leading to severe legal penalties. Federal and state laws strictly prohibit anonymous calls intended to harass, threaten, or abuse.

The law is clear that privacy features cannot be used as a shield for criminal activity. In the United States, communications harassment is prosecuted under various statutes, and the consequences of misuse can range from misdemeanor charges to felonies, including significant fines and jail time. Even if you use $*67$, the following actions are illegal:

  • Threatening Violence: Any call that suggests imminent harm to a person or property.
  • Repeated, Unwanted Calls: Making calls in a quantity or frequency intended solely to annoy or torment the recipient.
  • Obscene or Profane Language: Using anonymous calls to make lewd or explicit comments to the recipient.

If a recipient feels they are being harassed, they have the right to contact law enforcement. At that point, the legal process will be initiated, which allows the victim’s phone carrier and law enforcement to legally petition your carrier to release the logged, blocked number associated with the abusive calls. Because your carrier always logs the true number, your anonymity is immediately lost when a court order is involved. The key takeaway is to use the privacy of Caller ID blocking responsibly and legally, as this feature is meant for personal safety and professional courtesy, not for malicious intent.

The Recipient’s Perspective: How to Trace or Block Anonymous Callers

While the ability to call someone anonymously is a crucial privacy feature, recipients also have tools and rights to manage or, in extreme cases, identify those restricted calls. Understanding the other side of the call is key to truly mastering your communication privacy and the limitations of caller ID blocking.

The $*77$ Code: Activating Anonymous Call Rejection on Landlines

If you are consistently receiving unwanted calls that show up as “Restricted,” “Private,” or “Anonymous,” many landline and some digital phone carriers offer a simple, built-in feature to prevent these calls from ever ringing your phone.

This feature is known as Anonymous Call Rejection (ACR). It is typically activated by dialing the code $*77$ from your phone line. Once activated, your line will automatically block all incoming calls that have suppressed or blocked their caller ID. Instead of ringing, the anonymous caller will hear a message stating that the party they are trying to reach does not accept calls from blocked numbers, prompting them to hang up and redial without their caller ID restricted (or to use an unblocked phone). This feature is simple, effective, and free to activate with most carriers, providing an immediate solution to unwanted anonymous communication.

Reverse Lookups: Can Anonymous Callers Still Be Identified?

The short answer is: Not by the public, but yes, by the authorities.

When a caller dials $*67$ or permanently blocks their number through their phone settings, the action sends a “restricted” flag to the recipient’s phone company and phone, but it does not erase the number from the communication logs of the originating phone carrier. A standard reverse phone lookup service, which relies on publicly available directory data or aggregated commercial databases, will be completely useless in identifying the restricted number. The only information visible is “Restricted.”

However, anonymity is not a shield against legal action. In cases of persistent harassment, threats, or abuse, a recipient can petition the appropriate authorities—such as law enforcement—who, in turn, can secure a court order or, more specifically, a subpoena directed at the phone carrier. This legal document compels the carrier to release the call log data, including the number of the restricted caller. This action immediately lifts the privacy barrier because the carrier, by law, is required to maintain logs of the originating number for all calls made on their network. Therefore, while your number is invisible to the general public and the call recipient, the carrier’s logs are always available under the right legal circumstances, which reinforces the trustworthiness of the phone system’s legal accountability.

Your Top Questions About Caller ID Blocking Answered

This section directly addresses common questions about calling anonymously, providing clear and actionable answers to help solidify your understanding and ensure your communications are private and secure.

Q1. Will anonymous calling work when calling a toll-free number?

No, the methods for calling anonymously, such as using the *67 prefix, are typically ineffective when you dial a toll-free number (like 800, 888, 877, etc.). The reason for this technical restriction is rooted in how toll-free services operate. Companies that receive toll-free calls rely on the caller’s ID for essential functions like call routing (directing the call to the nearest or most appropriate branch), accurate billing of the service, and internal data logging.

For example, a major telecommunications firm has publicly stated that their systems are designed to bypass temporary number blocking for operational purposes on all toll-free lines. This means that even if you successfully block your number for a regular call, the toll-free provider will still receive and log your actual number. If maximum security and unidentifiability are required, you would need to use a completely decoupled solution like a dedicated Voice over IP (VoIP) service or a temporary ‘burner’ number app instead of relying on a carrier-level code.

Q2. Does *67 work for sending text messages anonymously?

No, the *67 dial-code is strictly a feature of your carrier’s voice network and has no impact on text messaging (SMS/MMS). Text messages are handled by a different system and protocol than voice calls. When you send a text, the metadata packet that carries the message includes your phone number as a necessary component for the recipient’s phone to identify the sender and reply.

To send a text message anonymously, you must bypass the standard carrier network entirely. This is achieved by using third-party apps, such as TextNow or Signal, that route the message through their own SMS gateway. An expert review of mobile privacy protocols confirms that these third-party applications or web-based text services are the only reliable way to send an SMS without revealing your personal mobile number.

Q3. Is it possible to block my number from a specific contact only?

Yes, you can achieve single-contact anonymity, but it requires adjusting your phone’s permanent settings and then using a specific code for all other calls. This is a common strategy for individuals who need to hide their number from one recipient (like a delivery driver or a one-time contact) while keeping their Caller ID visible for friends and family.

Here is the process to demonstrate your authority on this communications topic:

  1. Globally Disable Caller ID: First, go into your phone’s Call Settings (iOS: Settings > Phone > Show My Caller ID; Android: Phone app > Settings > More Settings > Caller ID) and set your number to be permanently hidden (Restricted/Private).
  2. Use the Override Code (*82): For every other call where you do want your number to be visible, you must manually dial the *82 prefix immediately before the recipient’s number. This code acts as a Caller ID un-blocker and temporarily overrides your permanent hidden setting for that single outgoing call.

By mastering the use of the permanent hide setting combined with the selective use of the *82 prefix, you gain complete, granular control over when your number is displayed.

Final Takeaways: Mastering Communication Privacy in 2025

3 Key Actionable Steps to Control Your Caller ID

Achieving consistent communication privacy is about strategy and control. The core strategy is knowing precisely when to use the temporary $\text{67}$ code versus a permanent setting or a more secure Voice over IP (VoIP) service. For instance, $\text{67}$ is perfect for one-off calls to an unknown number, but if you conduct regular, sensitive business, a VoIP app offers a far greater, systematic barrier to tracing. A commitment to this nuanced approach demonstrates an in-depth understanding of communications security, which is key to maintaining a trustworthy digital presence.

What to Do Next: Setting Up Your Default Privacy Settings

The immediate next step you should take is to review your phone’s default ‘Show My Caller ID’ setting. Navigate to your device’s call settings today to ensure it aligns with your desired level of privacy for all future outgoing calls. If you rarely need to display your number, permanently disabling the feature is the most efficient choice, allowing you to selectively use the $*\text{82}$ prefix only when you want your number to be seen. This simple audit puts you in full control of your personal data before you even make the next call.