How to Call from an Unknown Number in 2026 (Without Sketchy Apps)

You want to call someone without showing your real phone number. The reason is usually mundane — selling a car on Craigslist, calling a service business from your personal phone, returning a missed call from a number you do not recognize without giving up your own. There are four ways to do this that actually work in 2026, and one of them (*67) is the simplest. The others let you control the displayed caller ID more deliberately.

This guide covers what works, what stopped working, and what is legal vs. what is not.

The Short Answer

In 2026, you can call from an unknown number using any of these four methods:

Dial *67 before the number — the call shows as "Private" or "No Caller ID" to the recipient. Works on most US/Canada carriers.
Toggle "Show My Caller ID" off in iPhone or Android settings — same effect as *67 but applies to every outgoing call until you turn it back on.
Use a browser-based calling service — services like Kinvo show their assigned outbound number, not your personal mobile number.
Use a second-line app — Google Voice, TextNow, or similar gives you a separate number that is yours but not your primary line.

The first two methods hide the number entirely; the last two replace your number with a different one. Which you want depends on whether the recipient should be able to call you back.

How *67 Works (and When It Doesn't)

*67 is a vertical service code dating back to the 1980s. When you dial *67 followed by a phone number, your carrier sends the call with a "presentation indicator" telling the recipient's phone not to display your caller ID. The call still routes the same way; only the displayed caller ID is suppressed.

To use it: dial *67-1-555-123-4567. The recipient sees "Private" or "No Caller ID" instead of your number.

When *67 does not work:

Calls to toll-free numbers (1-800, 1-888, 1-866, etc). Toll-free service is paid for by the called party, so they are entitled to see who is calling.
Calls to 911 and other emergency services. Caller ID suppression is bypassed by law.
International calls from most US/Canada carriers. *67 is a North American Numbering Plan code; it does not apply once a call crosses an international gateway.
Some business PBX systems. Enterprises can configure their systems to capture the underlying ANI (Automatic Number Identification) regardless of *67.

And note: *67 hides your number from the human, but your carrier still has the full record. *67 is a privacy tool against people, not against subpoenas.

iPhone: How to Hide Your Number for Every Call

If you want every outgoing call to display as "No Caller ID" without dialing *67 each time:

Open Settings
Tap Apps, then Phone (on older iOS versions, scroll down to Phone directly)
Tap Show My Caller ID
Toggle off

Some carriers do not support this setting (it appears greyed out). In that case, your only option is *67 per call, or asking the carrier to enable line-level caller ID blocking on the account.

Android: How to Hide Your Number for Every Call

Steps vary slightly by Android skin, but the path is:

Open the Phone app
Tap the three-dot menu or settings gear
Tap Settings → Calls → Additional settings (or Supplementary services)
Tap Caller ID
Choose Hide number

On Samsung devices, the setting is sometimes under Phone settings → Caller ID and spam protection. On Pixel, it's under Calls → Additional settings → Caller ID.

Why "No Caller ID" Often Gets You Sent to Voicemail

Here is a tradeoff most people do not realize until after they make the call: roughly 70% of people in the US ignore calls from blocked or unknown numbers. iPhones have a "Silence Unknown Callers" toggle that automatically sends them to voicemail. Many Android phones do the same by default with spam protection on.

If you actually want the person to pick up, "No Caller ID" is the wrong tool. You want a real caller ID — just not your caller ID.

How to Call Back a No-Caller-ID Number

Flip the situation around: someone just called you and the screen said "No Caller ID" or "Unknown". You want to know who it was, and ideally call them back. There are three things you can try, in order of likelihood to work:

1. Dial *69 immediately. *69 (Last Call Return) calls back the most recent inbound number on your line. In the US and Canada it works on most carriers and routes the call back without showing you the number first. Catch: when a caller suppresses their number with *67, the number is never sent to your phone or your carrier's switch. *69 cannot return a call that was never identified — it will fail with "Last call return is not available" or similar. *69 works for missed calls from numbers you simply did not save (where the number was actually in your call log) but not for true "No Caller ID" calls.

2. Check your carrier's call log online. Carriers retain ANI (Automatic Number Identification) data even when caller ID was suppressed by the caller. Verizon, AT&T, and T-Mobile all expose recent call history in their web portals; some show the underlying number, some don't. If law enforcement is involved (harassment, threats), they can subpoena the full ANI record regardless of *67 suppression.

3. Use a reverse phone lookup service. If you do have the number but want to know who it belongs to, services like Whitepages, Spokeo, BeenVerified, and TrueCaller can identify business listings, name-listed individuals, and reported spam numbers. For free, TrueCaller is the most useful — its community-flagged spam database catches most robocalls and scam patterns. For paid (~$20/month), Spokeo and BeenVerified add owner history.

The honest bottom line: if the call was suppressed with *67, you usually cannot find out who it was without a carrier subpoena. The best defense is prevention — enable "Silence Unknown Callers" on iPhone (Settings → Phone → Silence Unknown Callers) or spam protection on Android, so suppressed calls go straight to voicemail and you can review them on your own time.

Browser-Based Calling: Real Caller ID, Not Yours

A browser-based calling service like Kinvo solves the problem differently. Instead of suppressing the displayed number, it shows the service's assigned outbound number (or a verified caller ID you provide). To the recipient, the call looks like a normal call from a real US number — they are far more likely to pick up than they would for "No Caller ID."

This is how it works in practice:

Sign up for Kinvo in your browser (no app download)
Verify a caller ID you own — your work number, a Google Voice number, or any number you can receive a verification call on
Add $5 in credit
Place the call from the browser dialer — the recipient sees the verified number, not your mobile

If they call back, the callback goes to the verified number — not to your personal cell. This is the right tool for selling something online, calling a service business, or any other "I do not want this person to have my real number" situation.

Second-Line Apps

Second-line services (Google Voice, TextNow, Hushed, MySudo) give you a separate phone number that is yours but is not your main line. You make outbound calls through the app; calls back come to that number, not your real one.

Compared to a browser-based outbound service, second-line apps add two things: inbound calling on the new number (people can call you back) and SMS on the new number. They cost more — most charge a monthly fee — and they add another app to your phone. The tradeoff is worth it if you want the number to be reusable for the same person over weeks or months. For one-off outbound calls, a browser-based service is cheaper and simpler.

What Does Not Work in 2026

Methods you may have read about that no longer work reliably:

Spoofing apps that let you "be" any number. Caller ID spoofing for the purpose of deceiving the recipient is illegal under the US Truth in Caller ID Act and Canada's similar legislation. Apps that offered this on the App Store have been removed; the few that remain on the open web are commonly used in fraud and your carrier may now block them.
The STIR/SHAKEN bypass. The carrier-level call-authentication framework rolled out in the US and Canada in 2021–2022 makes spoofed caller IDs detectable and increasingly likely to be marked "Spam Likely" or rejected outright.
#31# prefix (UK/Europe equivalent of *67). Still works in some European markets, but coverage is uneven. Check with your carrier before relying on it.

What's Legal vs. What's Not

Legal: hiding your number with *67, your phone's built-in setting, or a real number from a browser service or second-line app. You are not pretending to be someone you are not — you are just choosing which of your own numbers to display.

Illegal: caller-ID spoofing "with the intent to defraud, cause harm, or wrongfully obtain anything of value" (US Truth in Caller ID Act of 2009). Fines up to $10,000 per violation. The intent matters; the technical act of changing a displayed number for a legitimate business purpose (e.g., a doctor's office showing the main switchboard number instead of the doctor's personal mobile) is allowed.

If you are calling for any of the everyday reasons people want to hide their number — privacy when calling strangers, separating work from personal, protecting your kids' numbers — you are well inside the legal line. If you are trying to impersonate someone or deceive a victim into thinking the call is from their bank, you are not.

FAQ

Can I call someone with an unknown number from my iPhone for free?

Yes. Dial *67 followed by the number — the recipient sees "No Caller ID" and you pay nothing extra. To make every call show as unknown by default, toggle Settings → Phone → Show My Caller ID off.

How can I call back an unknown number to find out who called?

Dial *69 immediately after the call. In the US and Canada, *69 returns the last incoming call — your phone calls the number back without you having to know what it was. Note: *69 does not work for calls that came in as "No Caller ID" (the number was never sent to your phone in the first place).

Can I make a call show as a different number entirely?

Yes — through a browser-based calling service like Kinvo or a second-line app like Google Voice. You verify a caller ID you control, and outbound calls display that number to the recipient. This is legal as long as you control the number being displayed and are not using it to defraud.

Does *67 work on international calls?

Generally no. *67 is part of the North American Numbering Plan and does not propagate through international gateways. To make an international call from a number that isn't your personal mobile, use a browser-based calling service like Kinvo — it places the call from its own VoIP infrastructure and the displayed caller ID is the service's number, not yours.

Will hiding my caller ID get my call sent to voicemail?

Often, yes. iPhones with "Silence Unknown Callers" enabled, and most Androids with spam protection on, will send "No Caller ID" calls directly to voicemail. If you need the person to pick up, use a real caller ID through a browser service or second-line app instead of suppressing it.

The Right Tool for the Job

If you want privacy from one specific person for one specific call, *67 is the right tool. If you want privacy as a default across all calls, toggle the setting on your phone. If you want the recipient to pick up and be able to call you back at a number that isn't your personal mobile, use a browser-based service like Kinvo — sign up takes 90 seconds, no app needed, calls go through from the same browser you're reading this in.