Prefixly
Prefixly app icon

Block spam by prefix

Silence spam calls — a thousand at a time.

Prefixly blocks entire ranges of phone numbers by their shared prefix, for any country, entirely on your iPhone. No accounts. No tracking. No data ever leaves your device.

Any country 100% on-device No tracking Powered by CallKit

How it works

One short prefix. Thousands of numbers blocked.

Spam campaigns dial from blocks of consecutive numbers that share the same opening digits. Block the prefix once and Prefixly handles the rest.

STEP 01

Pick a country

Choose from every country — Prefixly defaults to your device’s region and fills in the dialing code automatically.

STEP 02

Enter a prefix

Type a full number to block one caller, or fewer digits to block every number that starts with them. You see the exact count before you add it.

STEP 03

Apply & relax

Prefixly registers the range with iOS. Matching calls are silenced automatically and labelled on your screen.

Privacy by design

Your block list never leaves your iPhone.

Prefixly has no accounts, no servers, no analytics, and no advertising. The numbers you block are stored only on your device and shared solely with the on-device call-blocking extension.

0
Trackers
0
Accounts
0
Data collected
On-device
Always