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🇺🇸 USA Number Porting Guide

A step-by-step guide to porting your U.S. phone number to CloudTalk

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Written by Valeriia Volobrinskaia

This guide outlines the supported number types, required documents, hosting rules, and porting timelines for U.S. numbers.

Initial Overview

1. Supported Number Types

Number Type

Example Prefixes

Geographic (Local)

All U.S. area codes are portable

Mobile (Wireless)

Portable with a valid 4-digit PIN from the current provider

Toll-Free

+1800, +1833, +1844, +1855, +1866, +1877, +1888

⚠️ SMS Requirements

If you would like to send SMS from your ported numbers you will need to complete A2P Registration.

When you submit your porting request in the Dashboard, the Verification step lets you tell us your A2P 10DLC status: register during porting, already registered with CloudTalk, or voice only.

  • Local or Mobile numbers - A2P 10DLC registration must be completed to send SMS
    ​- A2P registration can be done prior to porting since it typically takes 1.5-2 weeks.
    ​

  • Toll-Free numbers - A2P Toll-Free Verification must be completed before SMS can be sent through CloudTalk
    ​- Toll-free Verification can only be done after the number has ported in to CloudTalk

2. Submit Your Request

Request porting directly in the CloudTalk Dashboard: open Numbers > Port existing number and follow the guided steps. All supported number types for this country use the same flow, and you can track your request anytime under Numbers > Porting requests.

Looking to port numbers from other countries? See Global Porting Coverage.

3. Letter of Authorization

Where an LOA is required, the correct template for this country downloads inside the Documents step of your porting request: download it, sign it, and upload it right there. You no longer need a separate template from this guide.

(Other document requirements listed below.)

4. Timelines & Pricing

Number Type

Estimated Duration

Pricing

Local

3–10 business days

€30.00 per request, €2.00 per number

Mobile

3–10 business days

€30.00 per request, €2.00 per number

Toll-Free

3–10 business days

€30.00 per request, €4.00 per number

⚠️ Timelines may vary if submitted details do not match your current provider’s records.

Required Documents for Number Porting

✅ Local Numbers

  • Signed Letter of Authorization (LOA)

  • Latest invoice or proof of ownership

  • (Optional but recommended) Customer Service Record (CSR)

✅ Mobile Numbers

  • Signed LOA

  • Latest invoice or proof of ownership

  • PIN Code

    • Typically required by mobile carriers (e.g. Verizon, T-Mobile) and some VoIP platforms

    • Must be requested from your current provider

  • (Optional but recommended) Customer Service Record (CSR)

✅ Toll-Free Numbers

  • Signed LOA

  • Latest invoice or letter from current provider confirming ownership

How to Obtain a CSR (Customer Service Record)

A Customer Service Record (CSR) is an official document from your current carrier that lists all service-related details tied to your phone number(s). Submitting a CSR can help minimize porting delays and reduce the risk of rejections due to mismatched information.

To obtain your CSR:

  • Contact your current service provider (ask for the Porting Department, if applicable)

  • Request the full Customer Service Record — not just billing records

  • Cross-check the CSR against your LOA to ensure all key details match:

    • Company name

    • Billing address

    • Phone number(s) being ported

Porting Process Overview

  1. Documentation Collection
    Complete and sign the LOA (Letter of Authorization), and provide a recent invoice from your current telecom provider.
    ​

  2. Submit Your Porting Request
    Submit your request in the CloudTalk Dashboard under Numbers > Port existing number to begin the process.
    ​

  3. Initial Review
    Cloudtalk team'll verify number portability and confirm the next steps.
    ​

  4. Submission to Carrier
    CloudTalk submits your request to our partner carrier, who then forwards it to your current provider.
    ​
    CloudTalk will set up placeholder versions of your numbers on your account so you can start configuring the call flow designer and assigning the numbers to your agents so you will be ready for porting day.
    ​

  5. Approval or Rejection

    • If approved, Cloudtalk team will confirm the porting date (typically 1–4 business days in advance).

    • If rejected, Cloudtalk team will share the reason and guide you on how to correct and resubmit the request.
      ​

  6. On the Porting Day

    1. Your calls will switch over to CloudTalk on the scheduled date

    2. Your old provider will deactivate the number

    3. CloudTalk billing starts the same day

    4. We recommend contacting your old provider to make sure the number is removed from your billing

SMS Functionality Note

  • SMS routing is a secondary porting process, and SMS activation can be delayed by up to 1–3 days after the port is complete

  • A2P 10DLC registration must be finished in advance to enable messaging - this can be done simultaneously or in advance of the porting process

Common Rejection Reasons

Issue

How to Fix It

Incorrect address or company name

Confirm the correct details with your current provider before submitting the LOA

Missing or incorrect PIN

Request the valid PIN from your mobile or VoIP provider

Unsigned or incorrectly signed LOA

Ensure the LOA is signed by an authorized account holder (no typed signatures)

Outdated invoice or mismatched info

Provide a recent invoice showing the exact number(s) being ported

Need Help?

Check out our detailed porting articles:

Questions about a request you've already submitted? Open it under Numbers > Porting requests and click Open conversation. Our Porting Team is here to guide you every step of the way.

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