On Verizon Wireless, the block number and the *67 feature address privacy and call management in distinct ways. A block number typically refers to a system-assigned identifier used internally for devices, accounts, or network segments, while *67 is a universal vertical service code that temporarily hides the caller ID for a single outbound call. This article explains how each works on Verizon, what they reveal to the recipient, and when you might use one approach versus the other, with verified expectations for call behavior and privacy.
What a Block Number Means on Verizon
Wireless networks, including Verizon, use block-level identifiers to manage devices, services, and network segments. These are not typically shared with customers as a "block number" you can dial or reference in day-to-day usage. Instead, they appear in internal systems for device provisioning, account organization, or network slicing. Understanding this helps distinguish internal network constructs from customer-visible features like line blocks or device blocks on an account.
Internal vs Customer-Facing Identifiers
Verizon’s internal block numbers may group devices or services for routing, billing, or technical purposes. Customers rarely need these numbers for troubleshooting or configuration. Instead, users commonly encounter MEID/IMEI, line numbers, or account identifiers. Relying on official Verizon support or the account portal ensures you reference the correct identifier for a task, rather than an internal block reference that has no direct action path for subscribers.
How *67 Works on Verizon Wireless
The *67 feature is a call-originating privacy code recognized across the U.S. and in many countries. When you dial *67 before the destination number, your phone suppresses the transmission of your caller ID to the called party for that single call. Verizon respects this per-call command, but the recipient’s carrier ultimately decides whether to display private or blocked, and some services may still capture your line number through call logs or ANI for business or emergency purposes.
Step-by-Step Behavior
Dialing *67 is simple: type *67 followed by the full number, then press call. Your phone transmits a network signal indicating caller ID suppression. If the recipient has Caller ID and is on a U.S. landline or mobile network, they usually see "Blocked", "Private", or a similar label. Mobile users may still receive a call, but they might not answer due to the unknown identifier. The suppression applies only to the call you place while using *67; it does not change your default caller ID setting.
Practical Use Cases and Limitations
Use *67 when you want to make a one-off private call without changing your phone’s default caller ID setting. Common scenarios include calling back an unknown number, reaching a business that doesn’t accept private calls, or protecting your number during a single outbound contact. Limitations include that *67 does not work for special numbers like 911, 800, or directory assistance, and it will not prevent call recording, logging by telecom systems, or tracing by authorities if law enforcement requests records.
Block Number vs *67: Key Differences
A block number is an internal network identifier, not a dialable code, whereas *67 is a dialable privacy feature you can use per call. Using *67 changes how your number appears for a single call, while a block number has no direct effect on caller ID presentation to others. For users, understanding this distinction prevents confusion: you cannot dial a block number to hide your ID, nor will an internal block number alter whether your caller ID is shown.
Quick Comparison
| Aspect | Block Number | *67 Feature |
|---|---|---|
| Purpose | Internal network or account identifier | Caller ID suppression for a single call |
| Visibility | Not visible to customers or other parties | Used at dial time to hide your number |
| How to Use | Not dialable; managed by Verizon systems | Dial *67 before the destination number |
| Effect on Recipient | No direct effect on caller ID display | Typically shows as Blocked/Private |
| Permanence | Persistent system identifier | Applies only to the call in which it’s used |
Privacy Considerations and Myths
Some users believe *67 makes a call completely untraceable. In reality, *67 only hides caller ID from the recipient’s device and display. Telecommunications systems still log call details such as time, duration, source numbers, and locations for billing, troubleshooting, and regulatory compliance. Law enforcement with proper legal authority can obtain these records. No mechanism on consumer phones using *67 provides encryption or prevents call tracing through network infrastructure.
When to Use *67 on Verizon
Use *67 for occasional calls where you prefer not to share your line number, such as contacting a service provider that screens private calls, reaching an individual but not wanting to appear as "Unknown," or reducing spam risk from callbacks. Do not rely on *67 to block your number for emergency services, directory assistance, or specialized toll-free numbers, as these may override or ignore caller ID suppression. For persistent privacy needs, consider account-level features, third-party apps, or devices designed for enhanced anonymity, while understanding their limits and tradeoffs.
Verifying What You See
There is no customer-accessible "block number" you can reference to confirm internal network segments. To check how your line appears to others, make a test call to a trusted contact or use a verification service that accepts caller ID samples. To confirm *67 behavior, place a test call to a personal number you control and observe how it appears. Note that behavior may vary slightly when calling certain businesses, telecoms, or services that handle calls through specialized trunks or VoIP gateways.
Summary and Best Practices
A block number on Verizon is an internal system identifier used for routing and account management, not a dialable privacy tool. The *67 code is a per-call caller ID suppression feature that works across most of the U.S., presenting your number as Blocked or Private to the recipient. It does not hide calls from carriers, law enforcement, or recording systems, and it is not valid for emergency or special service numbers. Use *67 for one-off private calls, but understand its scope and limitations, and rely on official Verizon support for account- or device-specific identifiers.