TL;DR
Quick Answer
TL;DR
Key Facts
- Call reputation analytics: Spam labeling is generally driven by reputation and analytics systems, not STIR/SHAKEN authentication.
- Separate trust signals: STIR/SHAKEN validates caller ID information, while analytics evaluate whether a call appears wanted or unwanted.
- Authenticated calls can still be labeled: Calls receiving A-Level Attestation may still display Spam or Scam labels.
- Behavioral indicators: Complaint activity, calling patterns, and historical number reputation may influence labeling decisions.
- Authentication is not reputation: STIR/SHAKEN verifies identity and number authorization, not whether recipients want the call.
- Legal calls may still be labeled: Legitimate businesses can experience spam labels if analytics systems identify risk signals.
- Reputation management remains important: Businesses often need to manage number reputation alongside authentication to support call performance
Why Are Calls Still Being Labeled After STIR/SHAKEN?
Calls can still be labeled as spam after STIR/SHAKEN implementation because call authentication and call labeling are designed to solve different problems.
STIR/SHAKEN helps providers authenticate caller ID information and determine whether a caller is authorized to use a telephone number. Its primary purpose is to reduce illegal caller ID spoofing and improve trust in caller identity information.
Spam labeling systems, however, typically evaluate call reputation and behavior. These systems use separate analytics that consider factors such as complaint activity, historical performance, and calling patterns to determine whether a call may be unwanted.
Because these systems operate independently, a call can be fully authenticated through STIR/SHAKEN and still receive a Spam, Scam, or Potential Spam label.
How It Works
How Call Labeling Works
Many wireless carriers and voice ecosystem participants use analytics systems to help assess whether a call is likely wanted or unwanted before it reaches the recipient.
These systems may evaluate:
- Historical phone number reputation
- Consumer complaints
- Calling frequency
- Call volume patterns
- Previous labeling activity
- Other behavioral indicators associated with unwanted calls
The analysis is typically performed at or near call termination rather than during the authentication process itself.
STIR/SHAKEN Doesn't Prevent Labels
STIR/SHAKEN answers a specific question: Can the caller ID information be authenticated?
Call analytics attempt to answer a different question: Is this call likely wanted by the recipient?
A successful authentication result helps establish identity integrity, but it does not determine reputation, consumer sentiment, or calling quality. The Federal Communications Commission (FCC) has similarly recognized that caller authentication and caller identity information address different aspects of communications trust.
A-Level Attested Calls Can Still Receive a Spam Label
A-Level Attestation indicates that the originating provider knows the caller and has verified the caller's authorization to use the telephone number being displayed. However, attestation does not evaluate call intent or reputation. A call can receive the highest level of attestation and still be labeled as Spam if analytics systems identify negative reputation signals
Why This Matters
Why Is This Important for Businesses?
A common misconception is that STIR/SHAKEN implementation automatically resolves call labeling issues. In reality, authentication is only one component of how calls are evaluated throughout the voice ecosystem.
Organizations that focus exclusively on attestation levels may still experience:
- Spam labels
- Reduced answer rates
- Customer distrust
- Increased outbound calling costs
- Lower contact rates
Even when calls are fully authenticated.
Businesses Should Monitor Reputation
Call reputation can have a direct impact on customer engagement and call effectiveness.
Monitoring number reputation helps organizations identify issues before they affect large portions of their outbound traffic. Businesses that understand both authentication and reputation are often better positioned to investigate call treatment issues and take corrective action when labels appear.
The Best Approach
The strongest approach combines multiple trust signals:
- STIR/SHAKEN authentication
- Number authorization
- Consistent caller identity
- Responsible dialing practices
- Ongoing reputation monitoring
- Spam-label remediation when necessary
Authentication establishes who is calling. Reputation influences how that caller is evaluated and displayed. Both contribute to successful call outcomes.
Common Questions
Does STIR/SHAKEN remove spam labels?
No. STIR/SHAKEN authenticates caller ID information and helps reduce spoofing, but it does not control how reputation analytics providers label calls. Spam labels are generally based on separate analytics and behavioral signals.
Can legitimate businesses be labeled as spam?
Yes. A legitimate business may still receive spam labels if analytics systems identify factors such as complaint activity, negative number history, or calling patterns commonly associated with unwanted calls. Authentication alone does not prevent these labels.
Is A-Level Attestation enough to prevent labeling?
No. A-Level Attestation confirms that the caller is authorized to use a telephone number, but it does not determine whether a call is trusted, wanted, or free from spam labels. Reputation analytics continue to influence call treatment after authentication occurs.
What is the difference between authentication and reputation?
Authentication verifies caller identity information and number authorization. Reputation evaluates how a phone number behaves over time based on factors such as complaints, calling activity, and historical performance. Both influence communications trust, but they serve different purposes.
What should I do if my authenticated calls are still labeled?
Start by confirming your authentication status and identifying which provider is signing your calls. Then review your number reputation, complaint trends, calling practices, and any existing spam labels. In many cases, resolving labeling issues requires reputation management efforts in addition to STIR/SHAKEN authentication.
Our platform empowers organizations to manage branded calling, improve caller id reputation, and stay compliant with evolving regulatory and industry standards. FAQs and Glossary terms like this are designed to provide clear, actionable guidance backed by our expertise in verified identity, call labeling mitigation, and spam prevention.
To explore how Numeracle supports trusted and effective outbound communications, visit www.numeracle.com.
