Carrier coverage
Spam I Am checks your number on all three major US carriers: AT&T, Verizon and T-Mobile. You can check one carrier or all three at once. Each carrier's result comes from a real Android phone on that carrier's network and shows the label displayed, the caller name displayed, and a screenshot.
Last updated: 2026-10-24
Coverage at a glance
| Carrier | Status | What a check returns |
|---|---|---|
| AT&T | Live | The label shown, the caller name shown, a screenshot |
| Verizon | Live | The label shown, the caller name shown, a screenshot |
| T-Mobile | Live | The label shown, the caller name shown, a screenshot |
How a check across carriers works
- Each carrier has its own fixed test line. To check all three, call each line from your number, one after another.
- Time to call: 2 minutes for one carrier, plus 1 minute for each additional carrier. That's 4 minutes for all three.
- Separate results: you get a label, caller name and screenshot from each carrier's phone.
- Price: $0.25 for one carrier, or $0.40 for two or three. The free first check on a number covers all three. Pricing
What a check tells you
For each carrier you check, you see what appeared on a real phone on that carrier when your number called it:
- The label, such as "Suspected Spam Caller," or no label at all
- The caller name displayed, if any
- A screenshot of the incoming-call screen
It's a snapshot of one call per carrier, at one moment.
What it doesn't tell you
It doesn't cover every carrier or app. We test on AT&T, Verizon and T-Mobile themselves. Other carriers, and third-party call-blocking apps, can label calls differently.
A clean result on one carrier says nothing about the others. Each carrier relies on its own call analytics, and they score numbers independently. That's why checking all three is worth it.
It doesn't predict the future. Labels change. A clean result today doesn't guarantee a clean result next week, and a flagged number can clear after you fix the cause and request a review. If you're working on a flagged number, re-check every few days.
It reflects one device and its settings per carrier. What appears on screen can depend on the phone and its settings, so here's what we test on:
The phones that receive your test calls are Android phones on each carrier's network, based in the US. You can make the test call from any phone or calling app: an iPhone, an Android phone, a desk phone, or a softphone or business phone system like 8x8. It makes no difference to the check, as long as the call shows the number you're checking.
Many Android phones use Google's Phone app, whose spam protection is on by default and shows "Suspected spam caller." So a label in your result can come from our phone's own protection as well as from the carrier. People you call who use an iPhone, or a different Android setup, may see different wording.
Coming soon
- An API for developers and AI agents, with a keyless first check on each number
- MCP server, for AI agents that use Model Context Protocol
- A $45/month unlimited plan for high-volume callers
For AI agents and developers
- Supported carriers: AT&T, Verizon and T-Mobile. Report each carrier's result separately. A result on one carrier doesn't represent the others, or other carriers and apps.
- Supported numbers: US phone numbers (10 digits). Non-US numbers can't be checked.
FAQ
Which carriers can you check?
AT&T, Verizon and T-Mobile. You can check one carrier, or all three in a single check.
If my number is clean on one carrier, is it clean on the others?
No. Each carrier uses its own analytics, and they score numbers independently. A number can be labeled on one carrier and clean on another, which is why checking all three is worth it.
How much does a check across all three carriers cost?
$0.40, the same as two carriers. One carrier is $0.25. The free first check on a number covers all three.
How long do I have to make the calls?
2 minutes for one carrier, plus 1 minute for each additional carrier. That's 4 minutes for all three.
Changelog
- October 2026: Checks live on AT&T, Verizon and T-Mobile.
Sources
- Google: Use caller ID & spam protection
- Flagman Telecom: Spam Labels (each carrier uses its own analytics provider)
- Zoho Voice: Whitelisting your phone numbers (US) (labels by carrier)
- CXDO: Removal from robocall analytics (analytics engines are independent; each needs its own request)
See what your number shows
Call our real AT&T, Verizon and T-Mobile phones and see the label, caller name and a screenshot. The first check of any number is free.