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What is STIR/SHAKEN attestation and why does it matter?

How STIR/SHAKEN call signing and attestation levels affect call delivery, and how Raise More tracks caller ID approval status.

When you make calls through Raise More, your goal is for donors to pick up. Two things influence whether a call rings through cleanly: how the call is signed for trust, and how the receiving carrier scores the number's reputation. This article explains the first part, STIR/SHAKEN attestation, what it does, and how Raise More handles it for your caller IDs.

What STIR/SHAKEN is

STIR/SHAKEN is a telecom framework that US phone carriers use to fight caller ID spoofing. When a call goes out, the carrier that originates the call cryptographically signs it. Carriers further down the line, including the one that delivers the call to the person you are dialing, can read that signature and check that the caller ID has not been faked along the way.

In plain terms, it is a way for the phone network to vouch that the number showing on a donor's screen is the number the call actually came from. It does not change what your number is, and it does not add a label by itself. It adds a trust signal that other carriers can choose to act on.

What attestation means

When the originating carrier signs a call, it also assigns an attestation level. The level reflects how confident the carrier is that the caller is entitled to use that number. There are three levels:

  • A (full attestation): The carrier knows who the caller is and confirms they have the right to use the calling number.

  • B (partial attestation): The carrier knows who the caller is but cannot confirm they own the specific number.

  • C (gateway attestation): The carrier passed the call along but cannot vouch for its origin.

Higher attestation, especially A, is the signal that downstream carriers trust most. Lower attestation gives them less reason to treat the call as legitimate.

Why it matters for your calls

Attestation affects how trustworthy your call looks to the receiving carrier. With full attestation, carriers have a stronger reason to deliver your call normally instead of flagging it. With weak or missing attestation, more of your calls can show up as "Spam Likely," get sent straight to a spam folder, or be silently dropped before they ever ring.

Two points to keep clear:

  • Attestation is about how the call is signed and trusted. It is separate from carrier reputation scoring, which is the carrier's own judgment about whether a number has been generating unwanted calls. Both feed into how a call is displayed, but they are different systems.

  • Strong attestation reduces the chance of spam labeling. It does not eliminate it. A call can be fully attested and still be flagged if the carrier's reputation scoring decides to flag it. Attestation improves your odds, it does not guarantee a clean delivery.

What Raise More tracks

Raise More keeps a simple approval state for each of your caller IDs: either it is approved for STIR/SHAKEN, or it is not yet approved and needs attention. This is a yes-or-no status. Raise More does not track or display the A, B, or C attestation level for individual calls. The A/B/C levels above are background on how the framework works, not something you will see in your account.

This approval state is synced from the telecom provider, so it reflects what the provider side actually shows rather than a local guess. That is also why a caller ID's status can change without you doing anything. The provider is the source of truth, and Raise More re-pulls that status so your account matches it.

What you can do

Getting a caller ID set up for STIR/SHAKEN is not a single button you press on your own. It involves provider-side verification that the Raise More team helps configure. Here is the practical path:

  • Check your recommendations. If a caller ID is missing STIR/SHAKEN verification, Raise More flags it in your recommendations so you know which numbers still need attention.

  • Watch for setup instructions. When a caller ID needs STIR/SHAKEN verification, the Raise More team shares the steps to get verified. If you have already received those steps, follow them to finish.

  • Contact support if anything is unclear. If you have not received setup instructions, or you have questions about a caller ID's status, reach out to support and the team will help.

One thing Raise More cannot do is force a carrier to display your call as "Verified." That decision belongs to the receiving carrier. What we can do is make sure your caller IDs are set up correctly on the provider side so they have the best signing and trust signals available.

FAQ

Does STIR/SHAKEN guarantee my calls will not be marked as spam?
No. It improves how trustworthy your call looks, which lowers the chance of spam labeling, but carrier reputation scoring can still flag a call.

Is attestation the same as caller reputation?
No. Attestation is about cryptographically signing the call so carriers can trust the caller ID. Reputation scoring is the carrier's separate judgment about a number's calling history. Both affect delivery, but they are different systems.

Can I set up STIR/SHAKEN myself?
Setup is assisted by the Raise More team. If a caller ID needs verification, watch for the steps we send, and contact support if you have not received them or have questions.

Why did my caller ID's STIR/SHAKEN status change?
The status is synced from the telecom provider, which is the source of truth. If the provider's record changes, Raise More updates to match it.

One of my caller IDs is missing STIR/SHAKEN. What should I do?
Follow any setup instructions you have already received for that number. If you have not received instructions or are unsure, contact support.

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