How to Receive SMS From Short Codes

Many verification codes don't come from a normal phone number at all. They arrive from a short code like 22000 or 32665, or in the UK, from a name such as the company's brand. These senders run on special routes with their own rules, and those rules explain a lot of “I never got the code” problems. This guide explains how short codes work in North America and the UK, why they sometimes don't reach certain numbers and what you can do about it.

What is an SMS short code?

A short code is a 5- or 6-digit number leased by a business for high-volume texting. In the US and Canada they're registered and vetted through industry programs and carriers, which makes them fast and trusted for verification codes, alerts and marketing.

In the UK, short codes are typically 5 digits, but many companies also use an alphanumeric sender ID, where the text appears to come from a name rather than a number. Alphanumeric sender IDs aren't generally supported in the US, which is one reason the same app's texts look different across countries.

Why don't short code messages arrive?

Short codes are usually national. A US short code generally only reaches US mobile numbers on carriers that support that code, and a Canadian short code only reaches Canadian numbers. Messages to a foreign number roaming in the US may also fail, depending on the carrier.

VoIP numbers and some app-based numbers often can't receive short codes at all. Some prepaid plans and family accounts block short codes or premium messages by default. And if you ever replied STOP to that short code, you may have opted out of all messages from it.

• The number is VoIP or app-based and doesn't support short codes.
• The number is from a different country than the short code.
• Your carrier blocks short codes or premium messages on your plan.
• You previously replied STOP to that sender.
• A spam filter or messaging app hid the text.

How do I fix short code texts on my own phone?

Start with the simplest checks. Look in spam or filtered-message folders, and on iPhone check that filtering of unknown senders isn't hiding it. If you replied STOP to that sender in the past, texting START or UNSTOP to the same short code often re-subscribes you.

If texts from all short codes are missing, ask your carrier whether short codes or premium SMS are blocked on your line, and request they be enabled. If you're abroad, a short-code-based service may not reach you until you're home, so look for a call or email option.

Do rented numbers receive short code messages?

It depends on the sender's route, which the app controls, not you. Noir SMS numbers are carrier mobile numbers rather than VoIP lines, which helps, but we can't promise every app's sender will deliver to every number. Choose a country that matches the service's market, such as a US number for a US-only app.

Rented numbers receive messages only, so you can't reply START, STOP or HELP. If no SMS arrives within the 20-minute window, the charge is refunded to your balance automatically, and you can cancel two minutes after purchase if nothing has come. Then try another number or country.

Are short code texts safe?

Legitimate verification codes often come from short codes, but scammers can also send texts from ordinary numbers that imitate a company. A real code only matters if you requested it. Don't click links in unexpected texts, and never share a code with anyone who contacts you.

Whatever number you use, only verify your own legitimate accounts and follow each service's terms.