Why does this exist at all?
It is an anti-spam regime, imposed by the mobile carriers rather than by a government regulator. Before registration, businesses sent bulk traffic through ordinary phone numbers that were indistinguishable from personal texts, and filtering was crude and unpredictable. A2P 10DLC trades that for a registry: carriers learn who is behind each number and what they intend to send, and in exchange registered traffic gets higher throughput and far better deliverability. The important consequence for buyers is that this is not a rule your vendor can waive, expedite, or work around — the carriers own the decision and the vendor is a filer on your behalf.
What does registration actually require?
Two layers. Brand registration identifies the business itself: legal name, business address, EIN or equivalent tax identifier, and a contact. Campaign registration describes the messages: their purpose, sample message bodies, how recipients opt in, and how they opt out. Since 30 June 2026 the carriers also require a live, publicly reachable privacy policy and terms URL before a campaign is approved. The single most common rejection cause is a mismatch between the filed samples and what the system actually sends, so the samples must be real message text rather than placeholders.
- Brand: legal name, address, EIN, contact
- Campaign: use case, real sample messages, opt-in and opt-out flow
- Live privacy policy + terms URLs (required since 30 June 2026)
- Sample messages must match production output exactly
How long does approval take?
Typically one to three weeks from submission, sometimes longer, and it is not guaranteed. Brand vetting often clears within days; campaign approval is the slower half and is where most rejections happen. Sole proprietors and businesses without an EIN face a narrower path and a lower throughput ceiling. No vendor can expedite this — anyone promising same-day business texting on a fresh registration is either using a shared number pool that carries its own deliverability risk, or is describing something other than 10DLC. Plan the go-live sequence so that voice works from day one and texting switches on when approval lands.
What is exempt from 10DLC?
Three categories sit outside it. Toll-free numbers use a separate verification process with its own form and timeline. Short codes — the five and six digit numbers used by large brands — are a different, more expensive product entirely. And one-time-password traffic sent through a provider's managed verification service is generally handled under that provider's own senders rather than your 10DLC campaign. Person-to-person texting from your personal handset is also unaffected. What is not exempt is the case most small businesses care about: automated confirmations, reminders, and missed-call text-backs from your business number.