UNITED STATES (US)

Country Summary

Country nameUnited States
ISO codeUS
RegionNorth America
Mobile country code310, 311,
Dialing code+1

Guidelines

Two-way SMS supported Yes
Message length1600 characters.
Twilio MMS supportSupported
Sending SMS to landline numbersTwilio will not check whether the number is a landline and will attempt to send it to our carrier for delivery. Some carriers will convert the SMS into text-to-speech messages via voice calls.
Compliance considerations

Twilio strongly encourages customers to review proposed use cases with qualified legal counsel to make sure that they comply with all applicable laws. The following are some general best practices:

  1. Get opt-in consent from each end user before sending any communication to them, particular for marketing or other non-essential communications.
  2. Only communicate during an end user's daytime hours unless it is urgent.
  3. SMS campaigns should support HELP/STOP messages, and similar messages, in the end user's local language.
  4. Do not contact end users on do-not-call or do-not-disturb registries.

Note: The euro symbol (€) is not supported; avoid using this character in message submission toward the United States.

Abandoned Shopping Cart Notifications

Call to action must include in the terms and conditions detail that the messaging program includes shopping cart reminders.

Shopping cart messaging programs must incorporate double opt in via text messaging.

  • The double opt in must clearly inform the recipient that the messaging program includes shopping cart reminders.

The privacy policy must explicitly state how the information is gathered when making the determination that there has been a shopping cart abandoned.

  • Terms and conditions must reflect the privacy policy updates.

Abandonded shopping cart notifications must be sent within 48 hours of the cart being abandoned.

Only one notification may be sent per abandoned shopping cart instance.

The purchase, or approval to purchase can not be completed via the text message, and must be completed via a link to the e-commerce site where the abandoned cart instance occurred.

10DLC or Short Code campaign submissions must be filed as "Account Information", with a detailed description that highlights it is a messaging program that will include abandoned shopping cart notifications.

Phone Numbers & Sender ID

Toll FreeLong CodeShort Code
DomesticInternationalDomesticInternational
Operator network capability --- --- SupportedNot SupportedSupported
Twilio supported --- --- SupportedNot SupportedSupported
Sender ID preserved --- --- YesNoYes
Provisioning time------Requires registration---6 - 10 weeks
UCS-2 support---------------
Use case restrictions

High-Risk Financial Services

  • Payday Loans 
  • Short Term- High Interest Loans 
  • Auto Loans 
  • Mortgage Loans 
  • Student Loans 
  • Debt Collection 
  • Gambling/Sweepstakes
  • Stock Alerts
  • Cryptocurrency

Get Rich Quick Schemes

  • Deceptive Work from Home Programs
  • Risk Investment Opportunities 
  • Multi-Level Marketing 

3rd Party  

  • Debt Collection or Consolidation
  • Debt Reduction
  • Credit Repair Programs 
  • Lead Generation

Controlled Substances 

  • Tobacco 
  • Vape 
  • Federally Illegal Drugs

Pornography

Profanity

Hate Speech

Phishing

Fraud

Scams

Deceptive Marketing

Snowshoeing

Filter Evasion

For additional insight into these uses cases, including limitations, and exceptions, visit:  Forbidden message categories for SMS and MMS in the US and Canada

---

Loan Advertisements - Third Party Lenders

“Get rich quick” schemes

  • Work from Home Programs
  • Secret Shopper
  • Third Party Job Alerts
  • Risk Investment Opportunities

Illegal substances

Lead Generation

Hate Speech

Dynamic Routing

Snowshoeing

Filter Evasion

Shared Phone Numbers

URL Cycling

URL Redirects

Number Cycling

Spam

Fraud or Deceptive Messaging

Inapproriate Content

Profanity

High Risk Financial

  • Payday Loans
  • Short Term-High Interest Loans
  • Third Party Mortgage Loan
  • Student Loans
  • Third Party Auto Loans

Debt Forgiveness or Debt Collection

  • Debt Consolidation
  • Debt Reduction
  • Third Party Debt Collection
  • Credit Repair

Phishing

Gambling

For additional insight into these uses cases, including limitations, and exceptions, visit:  Forbidden message categories for SMS and MMS in the US and Canada

---

Loan Advertisements - Third Party Lenders

“Get rich quick” schemes

  • Work from Home Programs
  • Secret Shopper
  • Third Party Job Alerts
  • Risk Investment Opportunities

Illegal substances

Lead Generation

Hate Speech

Dynamic Routing

Snowshoeing

Filter Evasion

Shared Short Codes

URL Cycling

URL Redirects

Number Cycling

Spam

Fraud or Deceptive Messaging

Inapproriate Content

Profanity

High Risk Financial

  • Payday Loans
  • Short Term-High Interest Loans
  • Third Party Mortgage Loan
  • Student Loans
  • Third Party Auto Loans

Debt Forgiveness or Debt Collection

  • Debt Consolidation
  • Debt Reduction
  • Third Party Debt Collection
  • Credit Repair

Phishing

Gambling

For additional insight into short code requirements see https://www.twilio.com/guidelines/us/short-code

Best practices------

Refer to our FAQ for long code best practices.

---

Refer to our FAQ for short code best practices.

Toll Free - Domestic
Operator network capability ---
Twilio supported ---
Sender ID preserved ---
Provisioning time---
UCS-2 support---
Use case restrictions

High-Risk Financial Services

  • Payday Loans 
  • Short Term- High Interest Loans 
  • Auto Loans 
  • Mortgage Loans 
  • Student Loans 
  • Debt Collection 
  • Gambling/Sweepstakes
  • Stock Alerts
  • Cryptocurrency

Get Rich Quick Schemes

  • Deceptive Work from Home Programs
  • Risk Investment Opportunities 
  • Multi-Level Marketing 

3rd Party  

  • Debt Collection or Consolidation
  • Debt Reduction
  • Credit Repair Programs 
  • Lead Generation

Controlled Substances 

  • Tobacco 
  • Vape 
  • Federally Illegal Drugs

Pornography

Profanity

Hate Speech

Phishing

Fraud

Scams

Deceptive Marketing

Snowshoeing

Filter Evasion

For additional insight into these uses cases, including limitations, and exceptions, visit:  Forbidden message categories for SMS and MMS in the US and Canada

Best practices---
Toll Free - International
Operator network capability ---
Twilio supported ---
Sender ID preserved ---
Provisioning time---
UCS-2 support---
Use case restrictions---
Best practices---
Long Code - Domestic
Operator network capabilitySupported
Twilio supportedSupported
Sender ID preservedYes
Provisioning timeRequires registration
UCS-2 support---
Use case restrictions

Loan Advertisements - Third Party Lenders

“Get rich quick” schemes

  • Work from Home Programs
  • Secret Shopper
  • Third Party Job Alerts
  • Risk Investment Opportunities

Illegal substances

Lead Generation

Hate Speech

Dynamic Routing

Snowshoeing

Filter Evasion

Shared Phone Numbers

URL Cycling

URL Redirects

Number Cycling

Spam

Fraud or Deceptive Messaging

Inapproriate Content

Profanity

High Risk Financial

  • Payday Loans
  • Short Term-High Interest Loans
  • Third Party Mortgage Loan
  • Student Loans
  • Third Party Auto Loans

Debt Forgiveness or Debt Collection

  • Debt Consolidation
  • Debt Reduction
  • Third Party Debt Collection
  • Credit Repair

Phishing

Gambling

For additional insight into these uses cases, including limitations, and exceptions, visit:  Forbidden message categories for SMS and MMS in the US and Canada

Best practices

Refer to our FAQ for long code best practices.

Long Code - International
Operator network capabilityNot Supported
Twilio supportedNot Supported
Sender ID preservedNo
Provisioning time---
UCS-2 support---
Use case restrictions---
Best practices---
Short Code
Operator network capabilitySupported
Twilio supportedSupported
Sender ID preservedYes
Provisioning time6 - 10 weeks
UCS-2 support---
Use case restrictions

Loan Advertisements - Third Party Lenders

“Get rich quick” schemes

  • Work from Home Programs
  • Secret Shopper
  • Third Party Job Alerts
  • Risk Investment Opportunities

Illegal substances

Lead Generation

Hate Speech

Dynamic Routing

Snowshoeing

Filter Evasion

Shared Short Codes

URL Cycling

URL Redirects

Number Cycling

Spam

Fraud or Deceptive Messaging

Inapproriate Content

Profanity

High Risk Financial

  • Payday Loans
  • Short Term-High Interest Loans
  • Third Party Mortgage Loan
  • Student Loans
  • Third Party Auto Loans

Debt Forgiveness or Debt Collection

  • Debt Consolidation
  • Debt Reduction
  • Third Party Debt Collection
  • Credit Repair

Phishing

Gambling

For additional insight into short code requirements see https://www.twilio.com/guidelines/us/short-code

Best practices

Refer to our FAQ for short code best practices.

Alphanumeric - Pre-registration
Operator network capabilityNot Supported
Twilio supported Not Supported
Sender ID preservedNo
Provisioning time---
UCS-2 support---
Use case restrictions---
Best practices---
Alphanumeric - Dynamic
Operator network capabilityNot Supported
Twilio supported Not Supported
Sender ID preservedNo
Provisioning time---
UCS-2 support---
Use case restrictions---
Best practices---

Phone Numbers & Sender ID (continued)

Alphanumeric
Pre-registrationDynamic
Operator network capabilityNot SupportedNot Supported
Twilio supported Not Supported Not Supported
Sender ID preservedNoNo
Provisioning time------
UCS-2 support------
Use case restrictions------
Best practices------

For the benefit of all our customers, these guidelines are provided to help you comply with applicable requirements and to help ensure Twilio's platform remains compliant with global telecommunications ecosystem requirements. These guidelines represent our current understanding of common compliance requirements generally applicable to Twilio and its customers, and do not constitute legal advice. By posting these guidelines, Twilio makes no assurances regarding the legal compliance of your application built using our APIs. You are expected to understand and abide by all compliance obligations applicable to your specific application. You should check these pages regularly for updates as telecommunications ecosystem requirements continue to evolve and change, and the information below may be updated or changed without notice.