Which Numbers Need Registration?
US Local Numbers
Any US +1 number that is not toll-free. Requires before outbound messages can be delivered.
US Toll-Free Numbers
Prefixes +1800, +1833, +1844, +1855, +1866, +1877, +1888. Exempt from 10DLC but requires separate .
Required Data
Gather the following before starting registration.Brand registration (business identity) — 10DLC
Brand registration (business identity) — 10DLC
| Field | Detail |
|---|---|
| Legal business name | Exact name as registered with your EIN. Must match your IRS CP 575 confirmation letter. |
| EIN | 9-digit Employer Identification Number (format: XX-XXXXXXX). Canadian businesses use their Canadian Business Number instead. |
| Business address | Registered address on file with your tax agency. |
| Business type | Industry category (e.g. Technology, Professional Services, Retail). |
| Business contact email | Used for identity verification (2FA). |
| Website | Your company website URL. |
Sole proprietors without an EIN register as a Sole Proprietor Brand using first/last name instead. Sole proprietors with an EIN must register as a Standard or Low-Volume Brand.
Campaign registration (messaging use case) — 10DLC
Campaign registration (messaging use case) — 10DLC
| Field | Detail |
|---|---|
| Use case | What you send texts for (e.g. customer support, order notifications, appointment reminders). |
| Description | A short summary of your messaging program. |
| Sample messages | 2–5 example messages your customers would receive. |
| Opt-in flow | How customers agree to receive texts (e.g. checkbox on your website, keyword opt-in). |
| Privacy policy URL | Public link to your privacy policy. Required for all new campaigns. |
| Terms & conditions URL | Public link to your terms of service. Required for all new campaigns. |
Toll-free verification
Toll-free verification
| Field | Detail |
|---|---|
| Business name | Your legal business name. |
| EIN | 9-digit Employer Identification Number (format: XX-XXXXXXX). Required for all business types except sole proprietors. |
| Business type | One of: Private Profit, Public Profit, Non-Profit, Government, or Sole Proprietor. |
| Website | Your company website URL. |
| Use case category | Why you send texts (e.g. customer care, account notifications). |
| Use case summary | A short description of your messaging program. |
| Sample message | An example outbound message. |
| Opt-in type | How customers consent (e.g. verbal, web form, keyword). |
| Estimated message volume | Monthly volume estimate. |
| Privacy policy URL | Public link to your privacy policy. |
Registration Steps
Registration is handled by the OpenCX team on your behalf. Gather the required data above, then follow the steps below.- 10DLC
- Toll-free verification
Buy Or Verify Your Number
Go to Settings → Phone Numbers. Buy a US local number from inventory or verify a number you already own.
Prepare Your Brand And Campaign Data
Collect the fields listed in the Brand registration and Campaign registration sections above. You will need your EIN, legal business name, use case, sample messages, and policy URLs.
Contact The OpenCX Team
Reach out to your account team or contact support from your OpenCX dashboard. Provide the brand and campaign data. The team submits your registration to US carriers.
Wait For Approval
Brand review typically takes a few business days. Campaign review takes 10–15 business days. You will be notified when approved.
Enable SMS
Once approved, go to Channels → SMS, select your registered number, and enable the channel.
What Happens Without Registration?
| Scenario | Result |
|---|---|
| US local number, no 10DLC | Outbound texts are silently blocked by carriers. Inbound texts still arrive. |
| US toll-free, no verification | Outbound texts are blocked. Numbers pending review have reduced sending limits. |
| Non-US numbers | 10DLC does not apply. Check your country’s regulations under Channels → SMS. |
Related Documentation
Create SMS Agent
Go live after registration is approved.
SMS Flow
Session matching, delivery path, and outbound format.
Troubleshooting
Carrier still blocking? Diagnose delivery failures.
Human Handoff
AI to human escalation — applies to SMS sessions.