A Certificate Authority is not simply the company that issues a digital certificate. In a telecom environment a CA becomes part of the trust infrastructure that supports authenticated calling and therefore its reliability, automation and certificate management capabilities matter.
For providers implementing STIR/SHAKEN the choice becomes especially important. A suitable Certificate Authority should make certificate issuance straightforward while also supporting secure key handling, certificate repositories, automation, lifecycle management and integration with existing telecom operations.
1. Start With STIR/SHAKEN Authorization and Ecosystem Compatibility
The CA Must Fit the Trust Framework
The first question telecom providers should ask is whether the Certificate Authority is designed specifically for the STIR/SHAKEN ecosystem.
STIR/SHAKEN uses digital certificates to establish trust around authenticated caller identity. The originating provider uses its certificate when signing call information while the terminating side can retrieve the relevant certificate and use its public key during verification. TransNexus
This means the CA is not an isolated security service. It sits within a broader ecosystem involving the service provider, STI Policy Administrator and other network participants.
Peeringhub's documentation states that a service provider needs its own OCN and approved STIR/SHAKEN Service Provider status from the STI Policy Administrator before generating a STIR/SHAKEN certificate through its CA service. Once the provider completes the subscription process its OCN is whitelisted for certificate issuance through Peeringhub's ACME server. PeeringHub Docs
Why This Matters
Imagine a telecom operator purchasing a generic PKI service and discovering later that it does not support the certificate requirements or workflows needed for STIR/SHAKEN.
The provider may have a technically valid certificate but still lack the infrastructure required for the intended telecom use case.
The better approach is to evaluate the CA based on STIR/SHAKEN compatibility first and general PKI capabilities second.
2. Look for Standards-Based Certificate Issuance
Automation Should Be Built Into the Process
Certificate issuance should not depend entirely on manual intervention.
A strong CA should provide a standards-based mechanism that allows telecom operators to integrate certificate issuance into their existing infrastructure. Peeringhub operates an STI-ACME server that its documentation states is compliant with RFC 8555. Eligible STIR/SHAKEN service providers can use the ACME server to obtain their certificates. PeeringHub Docs
ACME is important because it provides a structured way to automate certificate-related operations rather than requiring engineers to repeatedly perform the same administrative steps.
For a small provider with one certificate this difference may seem minor.
For a larger provider managing multiple certificates and environments the operational impact becomes much greater.
Manual vs Automated Issuance
Consider two providers.
Provider A manually generates certificate requests and handles each certificate through a web workflow.
Provider B integrates an ACME client into its operational environment and automates certificate requests.
Both may eventually obtain a certificate. The difference is what happens when the number of certificates increases or renewal becomes necessary.
Automation reduces repetitive work and creates a more consistent process.
Peeringhub also provides technical documentation for Windows-based ACME clients and explains how service providers can generate certificates through its ACME infrastructure. PeeringHub Docs
3. Evaluate Certificate Lifecycle Management
Issuance Is Only One Stage
One of the most important questions to ask a Certificate Authority is what happens after the certificate is issued.
A telecom provider needs to consider the complete lifecycle:
Authorization → Key Generation → Certificate Issuance → Deployment → Repository Hosting → Monitoring → Renewal → Revocation
A CA that focuses only on issuance may leave the provider responsible for too many operational tasks.
Peeringhub's CA portal includes certificate operations along with private keys, billing, renewals and account settings. Peeringhub
Its API documentation also describes separate workflows for generating private keys and requesting STIR/SHAKEN certificates. PeeringHub Docs
Why Lifecycle Support Matters
Think about a telecom certificate like a vehicle registration.
Obtaining the registration is necessary but it does not mean the responsibility ends there. The registration has to remain valid and the operator needs to know when action is required.
The same principle applies to digital certificates.
If renewal becomes an emergency because nobody knows when a certificate expires then the CA workflow has failed to provide sufficient operational visibility.
A telecom provider should therefore evaluate:
Certificate validity information
Renewal processes
Certificate status visibility
Private-key management
Revocation processes
Certificate repository availability
API access
Operational support
4. Certificate Repository Support Should Be a Priority
The Certificate Must Be Reachable
A certificate is useful only if the systems that need to verify it can retrieve it.
In the STIR/SHAKEN verification process the terminating provider can obtain the originating provider's certificate from the certificate repository referenced by the call's identity information. The certificate is then evaluated for validity before its public key is used for signature verification. TransNexus
This makes certificate repository infrastructure an important part of the CA decision.
Peeringhub explicitly provides certificate repository functionality. Its documentation notes that ACME handles certificate issuance but does not itself provide certificate hosting. Peeringhub therefore provides a certificate repository for hosting STIR/SHAKEN certificates. PeeringHub Docs
Availability Is Part of Trust
Consider a certificate that is perfectly valid but cannot be retrieved because its repository is unavailable.
From the perspective of the verification system the problem is still operational.
This is why telecom providers should evaluate the CA and repository together rather than treating them as two unrelated services.
A useful evaluation question is:
If a terminating provider needs my certificate during call verification can it reliably retrieve it from the location referenced by my STIR/SHAKEN identity information?
That question gets much closer to the real operational requirement.
5. APIs and Developer Integration Can Make a Major Difference
Telecom Infrastructure Is Increasingly API-Driven
Modern telecom networks are rarely managed entirely through manual interfaces.
Providers frequently use software platforms, orchestration systems and network automation tools to manage infrastructure. Certificate management should therefore be capable of fitting into that environment.
Peeringhub provides an STI API that abstracts the complexity of the underlying ACME protocol. Its documented workflow includes authentication token generation, private-key generation and STIR/SHAKEN certificate requests. PeeringHub Docs
The API can also generate private keys through a dedicated endpoint and return a unique identifier that can subsequently be used during certificate issuance. PeeringHub Docs
A Practical Example
Suppose a telecom provider operates several signing environments.
With a manual-only workflow an engineer may need to:
Generate a key
Create a certificate request
Submit the request
Download the certificate
Deploy it
Configure the certificate repository
Repeat the process for another environment
With an API-driven workflow these operations can become part of a controlled automation pipeline.
That does not eliminate the need for security controls or human oversight. It reduces repetitive operational work.
For a telecom provider evaluating a CA the question should therefore be:
Can this CA integrate with the systems we already use?
6. Compare the CA's Model With Other Providers
Peeringhub vs TransNexus
Telecom providers have several options when selecting a STIR/SHAKEN Certificate Authority.
TransNexus is one established competitor. Its CA service provides SHAKEN certificates through a web interface or REST API and includes certificate repository hosting. TransNexus currently advertises certificate durations ranging from one day to one year along with monthly billing and no contract commitment. TransNexus
Peeringhub takes a different operational approach with an ACME-focused service and API workflows. Its documentation states that its STI-ACME server is RFC 8555 compliant and allows eligible providers to obtain STIR/SHAKEN certificates through automated issuance. PeeringHub Docs
Peeringhub's API documentation also states that providers can generate unlimited certificates during their subscription period. PeeringHub Docs
The important point is not that one model is universally better.
The right choice depends on the provider's operating environment.
A provider looking for broader STIR/SHAKEN infrastructure may evaluate a vendor such as TransNexus because its portfolio extends beyond CA services into authentication, verification and centralized SHAKEN capabilities. TransNexus
A provider primarily evaluating certificate issuance and management should compare factors such as:
ACME support
API availability
Certificate repository
Certificate limits
Renewal workflow
Private-key handling
Pricing model
Support
Integration requirements
That creates a more meaningful comparison than simply asking which CA issues certificates faster.
7. Assess Support, Security and Total Operational Cost
Price Should Not Be the Only Metric
Certificate Authority pricing matters but telecom providers should evaluate the total operational cost rather than focusing only on the subscription price.
A low-cost service that requires substantial manual engineering effort may ultimately cost more than a service with better automation.
For example:
CA A: Lower subscription cost but manual certificate operations.
CA B: Higher subscription cost but extensive API and automation capabilities.
If CA B saves several hours of engineering work every renewal cycle the apparent price difference may not represent the actual cost difference.
Support Can Matter During Deployment
Certificate infrastructure can involve unfamiliar concepts including OCN authorization, SPC tokens, private keys, ACME clients, certificate repositories and certificate revocation.
Peeringhub provides technical documentation covering certificate generation, API workflows, ACME clients and STIR/SHAKEN testing. Its documentation also states that its support team can manually generate a certificate for customers when needed. PeeringHub Docs
For a telecom provider this type of support can be useful when moving from initial configuration to production operations.
Security Should Remain Central
The CA decision should also include questions around:
Private-key handling
Authentication
API authorization
Certificate revocation
Certificate repository security
Access controls
Operational support
Auditability
A CA is ultimately part of the trust chain. Convenience should never replace security discipline.
Conclusion: Choose a CA That Fits Your Telecom Operations
Choosing a Certificate Authority for telecom networks is not simply a procurement exercise. It is a decision about how a provider will manage an important component of its STIR/SHAKEN trust infrastructure.
The strongest evaluation should look beyond certificate issuance and examine the complete operational model.
A telecom provider should ask:
Does the CA support STIR/SHAKEN requirements?
Can certificates be issued through standards-based automation?
Is there reliable certificate repository support?
Can the service integrate through APIs?
How are renewal and lifecycle operations handled?
What support is available when something goes wrong?
Does the pricing model make sense at the provider's operational scale?
Peeringhub is built specifically around STIR/SHAKEN Certificate Authority services with an STI-ACME server, certificate repository support and API-based certificate workflows. Its documentation provides technical paths for both automated and manual certificate generation. PeeringHub Docs
For telecom providers evaluating their next Certificate Authority, the objective should be straightforward: choose infrastructure that makes trusted calling easier to operate rather than adding another layer of complexity.
Explore Peeringhub's STIR/SHAKEN CA services and see how its certificate infrastructure can fit into your telecom environment.
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