What attestation is
When you place a call through Raise More, the phone carrier that originates the call attaches a trust rating to it. That rating is called an attestation level, and it comes in three grades: A, B, and C. This article explains what each level means, why it affects your calls, and how Raise More works to get your calls rated as highly as possible.
Attestation is part of a phone industry standard called STIR/SHAKEN. It exists to fight caller ID spoofing, where bad actors fake the number that shows up on someone's phone. Under STIR/SHAKEN, the carrier that puts your call onto the phone network signs it with a statement about how confident it is in the call's origin. That statement is the attestation level.
The attestation level travels with the call. The carrier on the receiving end reads it and uses it, along with other signals, to decide how to present the call: as a normal call, as a "Verified" or trusted call, or as a suspected spam call.
You do not set your own attestation level. The carrier assigns it based on what it knows about you and the number you are calling from.
The three levels
There are three attestation levels, from most trusted to least trusted.
A (Full attestation). The carrier knows who you are and confirms that you have the right to use the number you are calling from. This is the highest level of trust. Calls with A attestation are the most likely to be shown to the recipient as legitimate.
B (Partial attestation). The carrier knows who you are but cannot confirm that you own or are authorized to use the calling number. The caller is identified, but the number is not fully vouched for. This is a middle level of trust.
C (Gateway attestation). The carrier cannot confirm who you are or that you have the right to use the number. This often happens when a call enters the network from somewhere the carrier has no direct relationship with. This is the lowest level of trust.
Higher attestation generally means the call is more likely to be displayed as trustworthy and less likely to be flagged or labeled as spam. Lower attestation makes it more likely the call gets a "Spam Likely" or similar warning on the recipient's screen.
Why it matters for your calls
For a campaign or organization doing call time, attestation directly affects whether the people you are calling pick up. A call rated A is more likely to ring through cleanly and show as a real call. A call rated C is more likely to be filtered, labeled, or sent to voicemail by the recipient's carrier or phone.
Attestation is not the only thing that determines how your call is displayed. Call volume, complaint rates, and the recipient carrier's own spam tools all play a role. But attestation is a foundational signal, and a low level works against you no matter how good your call practices are.
Attestation is assigned per call by the carrier. Raise More cannot directly choose the level a carrier assigns. What we can do is make sure your caller IDs are set up so the carrier has grounds to assign the highest level it can.
How Raise More helps you reach the highest level
Getting to A attestation runs through having your calling number registered and verified with the carrier. When a caller ID is fully approved through the carrier's SHAKEN/STIR trust and verification process, the carrier has confirmation that you are a known caller who is authorized to use that number. That is the condition that lets a carrier assign full attestation. Getting a caller ID verified and approved is the goal, but the carrier still assigns the level on each call, so it improves your position rather than guaranteeing A.
Raise More tracks the approval state of each of your caller IDs and keeps it in sync with the carrier. A number that is not yet approved will not be treated with the same trust as one that is. Verification is handled with help from our team: they share the steps to get a number registered and approved with the carrier. There is no self-serve button to complete it inside the app.
If your calls are being flagged as spam or you suspect an attestation problem, contact support. We can check the carrier-side status of your caller ID, confirm whether its SHAKEN/STIR verification is complete, and walk you through any remaining steps.
FAQ
Can I set my own attestation level?
No. The originating carrier assigns the level for each call based on what it knows about you and your number. You cannot choose it directly.
Does Raise More control my attestation level?
No. We cannot directly set the level. We help by getting your caller IDs verified and approved so the carrier has grounds to assign the highest level it can.
Why is my call showing as "Spam Likely" even with a verified number?
Attestation is one signal among several. Recipient carriers also weigh call volume, recipient complaints, and their own spam-detection tools. A verified number improves your odds but does not guarantee a clean display on every call.
What should I do if I think my attestation is too low?
Contact support. We can review the carrier-side status of your caller ID, confirm whether its SHAKEN/STIR verification is complete, and help you finish any remaining steps.
Is attestation the same as caller ID verification?
They are related but not identical. Verifying and approving your caller ID is the setup work that lets a carrier assign higher attestation. Attestation is the per-call trust rating the carrier then applies. A verified, approved caller ID does not lock in an A rating, because the carrier still decides the level on each call.