Stay compliant
Register my numbers and follow messaging and calling regulations.
57 articles
10DLC registration
Associate Numbers with a 10DLC Campaign
1 min readLink your JustCall phone numbers to a registered 10DLC campaign so you can send SMS to US recipients.
Associate Phone Numbers with a 10DLC Campaign
2 min readLearn how to add or remove JustCall phone numbers from an approved A2P 10DLC campaign so your numbers can send SMS to US recipients.
Authentication+ for Publicly Traded Companies
2 min readPublicly traded companies must complete an Authentication+ identity verification step during 10DLC brand registration to prevent impersonation and protect their brand.
How to Register Your Brand for 10DLC
3 min readStep-by-step guide to registering your business brand for 10DLC in JustCall. Complete brand registration to unlock higher SMS throughput and avoid carrier filtering on US local numbers.
10DLC Campaign Approval Best Practices
2 min readIncrease your chances of 10DLC campaign approval with these best practices for sample messages, opt-in descriptions, and use case alignment.
10DLC Campaign Approval Best Practices
3 min readFollow these best practices when filling out your 10DLC campaign registration to avoid rejections and get approved faster.
How to Register a 10DLC Campaign
4 min readAfter registering your brand, register each messaging campaign to tell carriers what kind of messages you send. This guide walks through campaign setup, use cases, sample messages, and approval.
10DLC Campaign Rejection Reasons
2 min readCommon reasons 10DLC campaigns are rejected and how to fix each issue for resubmission.
10DLC Campaign Types and Use Cases
2 min readAll 10DLC campaign types explained — standard, special, and low-volume. Choose the right type for your messaging needs.
10DLC Campaign Types and Use Cases
4 min readChoose the right 10DLC campaign type for your messaging. Each type has different throughput limits, carrier review requirements, and compliance rules. This guide covers all standard campaign types.
Delete a 10DLC Campaign
2 min readHow to delete an approved, failed, or suspended 10DLC campaign from your JustCall Compliance Center and what happens to associated phone numbers.
EIN Requirement for 10DLC Registration
2 min readAn EIN (Employer Identification Number) is mandatory for 10DLC brand registration. Learn what qualifies as a valid tax ID and how to handle international registrations.
10DLC Frequently Asked Questions
3 min readQuick answers to the most common 10DLC questions: registration timeline, costs, what happens to existing numbers, toll-free vs 10DLC, and how to check your status.
10DLC Message Flow and Call to Action
2 min readHow to describe your message flow and call-to-action for 10DLC campaign registration. Examples of approved and rejected descriptions.
10DLC Message Flow and Call-to-Action Requirements
2 min readWhat your 10DLC campaign's call-to-action must include to pass review — opt-in language, privacy policies, and compliant sample messages.
10DLC Brand Registration Failure Reasons
2 min readWhy your 10DLC brand registration might fail and how to fix each issue — EIN mismatches, name inconsistencies, and address errors.
10DLC Registration Help Videos
1 min readVideo walkthroughs for completing 10DLC brand and campaign registration in JustCall.
10DLC Registration: Step-by-Step Guide
3 min readWalk through the complete 10DLC registration process — brand registration, campaign registration, and number association — from your JustCall Compliance Center.
10DLC Rejection Reasons and How to Fix Them
4 min readYour 10DLC brand or campaign registration was rejected? This guide covers every common rejection reason — mismatched business info, bad sample messages, missing opt-in details — with specific steps to fix each one.
10DLC Trust Scores and Throughput
2 min readHow 10DLC trust scores determine your messaging throughput — what each tier means, how many messages per second you can send, and how to move up.
10DLC Trust Scores in the US
2 min readDetailed breakdown of how US carriers use 10DLC trust scores — scoring factors, carrier-specific behavior, and what to expect at each level.
10DLC Trust Scores and Messaging Throughput
2 min readUnderstand how 10DLC Trust Scores work, what throughput you get at each level, and how to appeal a low score.
10DLC Registration: What It Is and Why You Need It
3 min read10DLC is a carrier requirement for business SMS on local US phone numbers. Without it, your messages get filtered or blocked. Learn what 10DLC is, who needs it, and what happens if you skip registration.
All About A2P 10DLC Registration
2 min readComplete guide to A2P 10DLC registration — what it is, why it's required, how brand and campaign registration works, pricing, and FAQ.
Maximize Your 10DLC Trust Score
2 min readActionable tips to improve your 10DLC trust score — EIN accuracy, website requirements, business data consistency, and appeal options.
Unregistered 10DLC Shutdown FAQ
2 min readFrequently asked questions about the September 2023 blocking of unregistered 10DLC messages — what happened, who's affected, and what to do.
Am I Compliant? A Checklist for US Messaging
7 min readUS carriers block unregistered SMS traffic and fine businesses that violate messaging rules. This checklist covers every compliance requirement for sending...
Toll-free registration
Toll-Free Number Registration Details
2 min readRequired information for registering toll-free numbers for SMS messaging — use cases, consent documentation, sample messages, and submission tips.
Toll-Free Verification — Rejection Reasons
2 min readToll-free number verification can be rejected for various reasons. Some rejections allow resubmission after fixing the issue. Others are permanent.
Toll-Free Verification Rejections
1 min readCommon reasons toll-free number verification is rejected and how to resolve each issue for resubmission.
SMS compliance & policies
Add a Contact to the Do Not Message List
1 min readBlock outbound messages to specific contacts by adding them to JustCall's Do Not Message (DNM) list. Manage suppression manually or via auto-archive settings.
Forbidden Message Categories for US and Canada
2 min readContent categories prohibited by US and Canadian carriers in SMS messaging — SHAFT categories, carrier-specific restrictions, and consequences.
JustCall Messaging Policy
2 min readJustCall's acceptable use policy for SMS and MMS messaging — what's allowed, what's prohibited, and enforcement actions.
Messaging Throughput for US Carriers
2 min readCarrier-specific throughput limits for SMS on AT&T, T-Mobile, and Verizon — how trust scores, number types, and registration affect delivery speed.
SMS Compliance: TCPA, Quiet Hours, and Best Practices
4 min readStay compliant with US SMS regulations. This guide covers TCPA requirements, carrier rules, quiet hours, consent types, and the practices that keep your numbers in good standing.
SMS Opt-In and Opt-Out: How Consent Works in JustCall
4 min readEvery business SMS requires recipient consent. Learn how JustCall handles opt-in, opt-out, and re-subscribe workflows to keep your messaging compliant with US carrier rules and TCPA regulations.
SMS Opt-In Requirements for 10DLC
2 min readConsent requirements for 10DLC messaging — types of opt-in, how to collect consent, documentation guidelines, and TCPA compliance.
SMS Settings: Auto-Archive and Do Not Message
2 min readConfigure automatic conversation archiving and Do Not Message list behavior in JustCall's SMS settings.
US Carrier Penalties for Non-Compliant Messaging
2 min readWhat happens when you violate US carrier messaging rules — fines, number suspension, campaign shutdown, and how to avoid penalties.
Country-specific SMS rules
SMS Guidelines for New Zealand
1 min readNew Zealand SMS compliance requirements — Unsolicited Electronic Messages Act, consent rules, and sending guidelines.
SMS Guidelines for Australia
2 min readAustralian SMS compliance requirements — ACMA regulations, consent rules, quiet hours, and sender identification for messaging from JustCall.
UK SMS Guidelines
2 min readUK SMS compliance requirements — PECR regulations, ICO guidelines, consent rules, and sender identification for messaging from JustCall.
UK SMS: International Long Codes Blocked
1 min readUK carriers block SMS from international long codes. Use a UK local number or Alphanumeric Sender ID to ensure delivery.
Alphanumeric sender ID
Alphanumeric Sender ID Overview
2 min readSend SMS from a branded name instead of a phone number using Alphanumeric Sender ID. Understand availability, formatting rules, and limitations.
Alphanumeric Sender IDs for France
1 min readFrance-specific requirements for Alphanumeric Sender ID registration, including pre-registration rules, documentation, and compliance guidelines.
Enable Alphanumeric Sender ID on a Number
1 min readConfigure Alphanumeric Sender ID for a specific JustCall number instead of applying it account-wide.
Enable Alphanumeric Sender ID
1 min readStep-by-step guide to enabling Alphanumeric Sender ID on your JustCall account for branded outbound SMS in supported countries.
Country number requirements
Australian Phone Number Regulatory Requirements
1 min readRequirements for purchasing Australian phone numbers vary by number type. Here is what you need for each.
Documents Required for Belgian Phone Numbers
2 min readTo purchase a Belgian phone number on JustCall, you need to submit identity and address documentation. Requirements vary by number type and account type.
Documents Required for Argentine Phone Numbers
1 min readTo purchase an Argentine phone number on JustCall, you need identity and address documentation. Requirements vary by number type.
Documents Required for UK Phone Numbers
1 min readTo purchase a UK phone number on JustCall, you need to submit identity and address verification documents. Requirements differ for individuals and businesses.
Geographic Permission Restrictions
1 min readJustCall may restrict your account from calling or messaging specific countries for security and compliance reasons.
South Korea Phone Number Regulatory Requirements
1 min readSouth Korean phone numbers have strict regulatory requirements. Most number types are available to businesses only.
Taiwan Phone Number Regulatory Requirements
1 min readRequirements for purchasing Taiwanese phone numbers vary by number type. Most require a Taiwan address.
UK KYC Regulatory Requirements
1 min readUK phone numbers require approved identity verification (Regulatory Compliance) before they can be used for calling or messaging.
Security & GDPR
GDPR Compliance on JustCall
4 min readHow JustCall supports GDPR compliance with data export, deletion requests, consent management, and Data Processing Agreements.
JustCall Security and Compliance
5 min readOverview of JustCall security certifications, encryption, data residency, and compliance frameworks including SOC 2, HIPAA, and ISO 27001.