Calling Line Identification (CLID) Verification

Why We’re Asking for This Information

Per FCC requirements, to help protect your business and prevent caller ID fraud, we’re required to verify the phone numbers you use when placing outbound calls on your Hawaiian Telcom voice services.

Policy Overview

Hawaiian Telcom requires that all outbound calls transmitted across its network present a legitimate, accurate, and authorized CLID. You must:

Use only telephone numbers you own or are legally authorized to use.
Do not present numbers that are:
- Unallocated, invalid, or disconnected
- Assigned as inbound-only or designated Do-Not-Originate (DNO)
- Assigned to another party without explicit written authorization
Provide updates before adding or changing any CLID values used on the network.

Hawaiian Telcom may block or suspend outbound traffic using numbers that violate these policies or federal requirements. Completion of this form is required.

We will require an update of this form for the following activities:

Installing new SIP, ISDN PRI/BRI trunking or outbound voice service setups
Adding or changing caller ID numbers
Annual updates

What You Are Required to Provide

Please list all phone numbers you plan to show as your Caller ID. Only numbers you own—or have permission to use—can be approved.

Please complete the information & form below:

FAQs

What is the purpose of these new FCC rules?

The FCC has strengthened measures to stop illegal robocalls, especially those originating outside the U.S. Gateway providers must authenticate caller ID and implement robocall mitigation practices.
Why am I being asked to provide documentation?

FCC rules require providers to verify that customers have the legal right to use any phone numbers on their network. This ensures compliance and protects communication integrity.
Which numbers require documentation?

Any number that uses our network even the ones that are not owned by us—this includes numbers you manage, lease, port in, or otherwise utilize.
What is STIR/SHAKEN and why does it matter?

STIR/SHAKEN is a caller ID authentication system that verifies your identity when making calls, reducing spoofed calls and increasing trust.
When do these regulations take effect?

The FCC regulation compliance are to be in effect December 15, 2025.
What happens if providers don't comply?

Non-compliance can lead to mandatory blocking of traffic and potential FCC enforcement actions.
What happens if I don't comply?

Failure to provide RTU documentation can lead to service disruptions or disconnection, as this is an FCC mandate.
What is changing under the new FCC order?

Providers must block calls using a Do-Not-Originate (DNO) list and use SIP code 603+ for notifying callers when calls are blocked based on analytics.
What is a Do-Not-Originate (DNO) list?

A DNO list includes numbers that should never originate calls—such as invalid, unused, or inbound-only numbers.
Why is SIP code 603+ important?

SIP code 603+ provides clear, standardized information when a call is blocked due to analytics, helping callers quickly identify and correct issues.
How does this help consumers?

These measures reduce illegal robocalls and improve transparency when legitimate calls are blocked.
What is 'Right to Use' (RTU)?

RTU means you have legal permission to use a specific phone number. To get full STIR/SHAKEN attestation, you must prove RTU for your numbers.
What documents prove RTU?

Examples include number ownership records, lease agreements, or a Letter of Authorization (LOA) from the number’s owner.
What is a Letter of Authorization (LOA)?

An LOA is a document confirming you have the authority to use the numbers and can provide supporting evidence if requested.
Is this a one-time process?

No. Anytime you add, remove, or change numbers, you must update your documentation.
How do I submit my information?

Complete the form above and upload your documents. FAQs and support resources are available here.
Where can I get help?

Call 808-643-3211 for assistance.
What about reassigned numbers?

If a number is reassigned, you must include this in your DNO list until updated to prevent misuse.
Do numbers from overseas need documentation too?

Yes—any number entering the U.S. must be verified per FCC rules.