Get the call
A No Caller ID, Private, or Blocked call reaches your phone.
Know who called
Track No Caller ID Calls
Reveal the phone number behind No Caller ID, Private, and Blocked calls. Decline the call and MaskOff identifies the number behind it.
- DownloadGet MaskOff on your phone
- Set up and testFollow the guided in-app steps
- Decline blocked callsSee the identified number in MaskOff
For iPhone and Android. Works with most major carriers; some prepaid plans may not be supported. Check compatibility.
Saved in MaskOffReview the number anytime in your call history
How it works
How to track No Caller ID calls with MaskOff
Install and complete the guided setup before the blocked call arrives. MaskOff confirms the setup with a test call; after that, the next steps happen right on your phone.
Decline it
Decline instead of answering so MaskOff can identify the number.
See the number
MaskOff shows the identified number and saves it in your call history.
Trusted at scale
300K+ lifetime downloads
MaskOff has been downloaded more than 300,000 times across iPhone and Android.
App Store · Global★★★★★2K+ global ratings · 271K lifetime downloadsGoogle Play★★★★★450+ reviews · 41K+ lifetime downloads
Lifetime download figures through September 2026.
Customer reviews
What customers say
“We were getting harassing No Caller ID calls for months... We were able to get the police involved and the calls completely stopped.”
“This app is super simple... it took me like a minute to set up, and I tested it and it works.”
US-based · Moff Technologies LLC
Focused on blocked-call identification since 2023
MaskOff is built in the United States by a team focused on identifying and documenting unwanted calls. It is not one feature among many. It is what we do.
One focused product
MaskOff is built around blocked-call identification, call history, and recording.
Built around US carriers
Guided setup on both iPhone and Android.
Top-grade security
Your data is encrypted in transit and at rest using industry-standard security practices.
Setup check
Know your setup works before a real blocked call
MaskOff places a guided test call after setup. Decline it just like a No Caller ID call. If something needs attention, the app walks you through the fix.
Run the check again anytime from MaskOff Settings → Check my setup.
Included
Identify, review, and record important calls
Every MaskOff subscription includes blocked-call identification, call history, evidence reports, and call recording.
Blocked-call identification
Reveal the phone number behind incoming No Caller ID, Private, or Blocked calls.
Call history and evidence reports
Export timestamped call logs as a court-ready PDF or a raw CSV file.
Read more →Call recording
Record calls through MaskOff and replay or share them when you need the details.
Read more →Compatibility
Built for major carriers
Most major carriers are supported, although some prepaid or restricted plans may not work. MaskOff shows the appropriate setup for your line in the app.
Before you download
Good to know
Can MaskOff identify a call I received before installing?
No. MaskOff must be active when the blocked call arrives.
What if a caller fakes the number shown on my screen?
MaskOff reveals hidden numbers. It cannot verify who is behind a number that was deliberately faked.
What do I do when a blocked call arrives?
Decline it instead of answering so MaskOff can identify the number.
Ready for the next blocked call?
Set up MaskOff before it arrives.
Start a 3-day trial