A network can be technically secure and still become a weak point if it cannot reliably determine who is behind a communication. In modern telecom environments identity validation is becoming a core security control because attackers increasingly exploit trusted identities rather than simply attacking network infrastructure.
For carriers and enterprise communications providers this distinction matters. A spoofed caller ID can make a fraudulent call appear legitimate while a compromised or poorly managed identity can undermine otherwise strong network controls. The U.S. Federal Communications Commission describes caller ID authentication as a mechanism that helps providers identify illegal robocalls and gives subscribers greater confidence that callers are who they claim to be. (FCC Docs)
Within the STIR/SHAKEN ecosystem identity validation is supported by cryptographic signatures, trusted certificates and a governed public key infrastructure. Peeringhub focuses on this trust layer through its STIR/SHAKEN Certificate Authority services along with Identity Header validation, certificate inspection, STI-CR hosting, OCN lookup and API-driven certificate lifecycle management. (Peering Hub)
Identity Has Become a Network Security Control
Security Is No Longer Only About Devices
Traditional network security often focuses on infrastructure. Firewalls protect network boundaries. Encryption protects data in transit. Access controls restrict users. Monitoring systems look for suspicious activity. All of these remain important.
But communications networks introduce another question:
Can the network verify that the identity presented by a communication is authentic?
That question becomes especially important in voice networks where caller ID can be manipulated.
The FTC received more than 2.6 million Do Not Call complaints during fiscal year 2025 and the National Do Not Call Registry contained more than 258 million active registrations. Although those numbers cover unwanted calls broadly rather than identity fraud specifically they demonstrate the continuing scale of the trust problem surrounding voice communications. (Federal Trade Commission)
Identity Validation Adds Another Security Layer
Identity validation does not replace firewalls or fraud detection. Instead it adds another layer to the security model. Think of a corporate building. A security guard may check whether someone has a valid badge before allowing them inside. Network security works similarly when it validates whether an identity is authorized and whether the credentials supporting that identity can be trusted.
In STIR/SHAKEN that trust is established through a governed certificate infrastructure.
STIR/SHAKEN Turns Caller Identity Into Verifiable Information
From Displayed Number to Cryptographic Evidence
Caller ID traditionally tells the recipient which number is being presented. STIR/SHAKEN adds cryptographic verification to that process. The originating provider authenticates caller information and signs the call using a SHAKEN PASSporT. The receiving provider can then verify the signature and the certificate associated with the signing provider. The FCC describes STIR/SHAKEN as a caller ID authentication framework built from standards and protocols for IP networks. (FCC Docs) This changes the security model considerably. Instead of treating a caller ID number as an assertion that should simply be displayed the network can evaluate evidence supporting that assertion.
Certificates Create the Chain of Trust
Digital certificates are fundamental to this process. The SHAKEN Certificate Policy describes a PKI model where the STI Policy Administrator maintains the trusted CA ecosystem and authorized service providers obtain certificates through approved STI-CAs. (Authenticate) The analogy is similar to TLS certificates used on websites. When a browser connects to a secure website it does not simply trust the domain name. It evaluates the certificate and the chain of trust behind it. STIR/SHAKEN applies a comparable cryptographic trust principle to caller identity.
Identity Validation Helps Reduce Spoofing Opportunities
Why Spoofing Is a Security Problem
Spoofing works because attackers manipulate the identity that appears legitimate.
A scammer may attempt to make a call appear to originate from:
A financial institution
A government organization
A healthcare provider
A familiar local number
A company customer service line
The technical attack may be relatively simple. The psychological impact is much more significant. If the recipient trusts the displayed identity they may provide sensitive information transfer money or follow instructions that would otherwise appear suspicious.
Authentication Makes Identity Harder to Falsify
STIR/SHAKEN does not make fraudulent calls impossible. That distinction is important. Research has found that robocallers have adapted to STIR/SHAKEN and that unwanted calls remain a significant problem despite authentication measures. What identity validation does provide is a stronger technical foundation for distinguishing authenticated caller information from unsupported assertions. That creates additional data for downstream providers and fraud systems.
4. Certificate Validation Is Central to Network Trust
A Signature Is Only Useful If Its Certificate Can Be Trusted
Imagine receiving a digitally signed document from an unknown organization. The presence of a signature alone does not establish legitimacy.
You also need to know:
Who issued the credential
Whether the credential is valid
Whether it has expired
Whether it has been revoked
Whether the issuer belongs to a trusted ecosystem
The same principle applies to STIR/SHAKEN. The SHAKEN Certificate Policy requires relying parties to verify the digital signature and confirm that the certificate was issued by a trusted CA. (Authenticate)
Identity Validation Requires Certificate Visibility
This is why certificate inspection becomes more than an administrative convenience.
Peeringhub's Certificate Inspector allows providers to inspect certificate information from pasted PEM content, a certificate URL or an uploaded .crt or .pem file. The service exposes information such as issuer, subject, validity dates and OCN context. (Peering Hub)
That gives network and security teams a practical way to investigate the credentials behind an authenticated identity.
APIs Make Identity Validation More Scalable
Manual Verification Does Not Scale With Network Complexity
A carrier may need to validate thousands of authentication events across a distributed environment.
Asking engineers to manually inspect headers or certificates for every issue is not a scalable security strategy. Modern identity validation therefore needs programmable interfaces.
Peeringhub provides a public STI/SHAKEN API for validation utilities including Identity Header decoding, certificate inspection and OCN lookup. It also provides an ACME API for automated certificate issuance, renewal and revocation. (Peering Hub)
Identity Validation Becomes Part of the Workflow
Consider a provider onboarding a new voice customer.
A modern workflow could validate:
The service provider identity
The provider's OCN
The SPC authorization
The certificate
The Identity Header
The attestation
The signature status
Instead of treating these as separate manual tasks the provider can integrate them into its broader provisioning and security workflow.
That is the difference between checking identity and engineering identity validation into the network.
Centralized Trust Infrastructure Strengthens Operational Security
Fragmented Security Creates Blind Spots
A provider may have authentication systems in one environment certificate management somewhere else and monitoring in another.
That fragmentation can make investigations slower.
When an authentication issue occurs engineers may need to determine whether the problem originated from:
An expired certificate
A revoked certificate
An invalid signature
Incorrect attestation
A certificate URL problem
An identity mismatch
A provisioning error
Centralized visibility can reduce the time required to establish what happened.
Monitoring Turns Identity Into an Observable Security Signal
Peeringhub's platform includes monitoring capabilities covering attestation mix, errors, revocations and audit events. (Peering Hub)
This is important because security is not only about prevention. It is also about detection and investigation. A network that can observe changes in authentication behavior has more information available when something goes wrong.
For example a sudden increase in failed signatures or unexpected certificate revocations could trigger an operational investigation before the issue becomes a larger service problem.
Identity Validation Supports a Broader Zero-Trust Approach
The Security Model Is Moving From Assumption to Verification
Zero-trust security is built around a straightforward principle:
Do not automatically trust an identity simply because it appears to belong to a known environment. Verify it.
Telecom identity validation follows a similar philosophy. A call arriving from a known network is not necessarily enough. The network should be able to evaluate the authentication information associated with the call.
This creates a layered security approach:
Identity → Credential → Signature → Certificate → Trust Chain → Policy
Each layer provides additional evidence.
STIR/SHAKEN Is One Layer Rather Than the Entire Security Stack
Identity validation should operate alongside other controls such as:
Fraud analytics
Traffic monitoring
Rate controls
Traceback processes
Number reputation
Customer verification
Call blocking
Regulatory compliance
This distinction is particularly important because a successfully authenticated call is not automatically a legitimate call.
Authentication establishes information about the caller identity. It does not determine the caller's intent. A malicious actor using an authorized identity can still create problems. That is why identity validation should be combined with behavioral and network-level security controls.
How Peeringhub Fits Into the Identity Validation Layer
More Than Certificate Issuance
The STIR/SHAKEN ecosystem includes established organizations serving different parts of the trust architecture.
iconectiv operates as the U.S. STI Policy Administrator and maintains the approved CA ecosystem and Service Provider Code tokens. Its platform enables the SHAKEN verification ecosystem to determine whether a call was signed using a certificate from an approved CA. (Authenticate)
TransNexus is another established STIR/SHAKEN provider and has operated as an approved SHAKEN Certification Authority since 2019. (Authenticate)
Peeringhub approaches the problem with a strong emphasis on developer accessibility and operational automation.
Its platform combines:
STIR/SHAKEN CA services
Identity Header parsing
PASSporT inspection
Signature validation
Certificate inspection
STI-CR certificate hosting
OCN lookup
Certificate issuance
Certificate rotation
Certificate revocation
Public APIs
ACME automation
Python tooling (Peering Hub)
The Difference Is in the Operational Layer
For example a provider can use Peeringhub's public validator to decode a SIP Identity Header and inspect information including attestation, origination, destination, x5u, algorithm and signature status. (Peering Hub)
That is different from simply receiving a certificate. It gives engineers tools to understand what the authentication data says and whether the underlying trust information can be validated.
The platform also provides Python packages designed for service providers that want to automate certificate generation and operations. Its shaken-cert-manager focuses on lifecycle management while stir-shaken-toolkit provides tools for signing calls, decoding Identity Headers, validating PASSporT tokens and inspecting certificates. (Peering Hub)
Identity Validation Is Becoming a Continuous Process
Security Cannot Depend on One-Time Verification
One of the biggest changes in modern network security is the move from periodic checks toward continuous validation. A provider cannot simply verify an identity once and assume the trust relationship will remain valid indefinitely. Certificates expire. Credentials can be revoked. Network configurations change. Customer relationships change. Attack techniques evolve. That means identity validation must become part of an ongoing operational process.
Automation Makes Continuous Validation Practical
Peeringhub's ACME implementation is designed to automate STIR/SHAKEN certificate lifecycle operations including issuance renewal and revocation. (Peering Hub) This matters because manual security processes tend to become inconsistent as environments grow. Automation provides repeatability. Repeatability provides operational consistency and operational consistency is one of the foundations of effective network security.
Conclusion: Identity Is Becoming Part of the Network Security Perimeter
Network security is moving beyond protecting infrastructure and controlling access. The identity associated with every communication is becoming another security signal that networks need to validate.
For telecom providers that means caller identity cannot remain a simple field displayed on a handset.
It needs supporting evidence.
STIR/SHAKEN provides that evidence through cryptographic signatures, PASSporT tokens and certificate-backed trust relationships. The broader SHAKEN governance model provides controls around authorized providers and trusted Certification Authorities. (Authenticate)
But the technology is only effective when the operational layer is reliable.
Certificates need to be issued and renewed. Identity Headers need to be inspected. Signatures need to be validated. Revocations need to be visible. Provider identities need to be confirmed. And all of these processes need to work at carrier scale.
That is where identity validation becomes a network security discipline rather than a compliance checkbox.
Peeringhub gives telecom providers the tools to build that discipline into their STIR/SHAKEN operations through certificate infrastructure, validation utilities, APIs and automation. (Peering Hub)
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