A practical guide to +220 verification numbers for The Gambia

What should engineers know about the Gambian numbering plan?

The Gambia dials in on +220 and does not use a trunk prefix, so local and international forms of a number differ only by the country code. Subscriber numbers are seven digits, which makes the full E.164 string +220 plus seven digits.

A few habits keep data clean:

• Store the canonical E.164 form and nothing else in your user table.
• Strip spaces and dashes on input, but do not strip leading digits, because there is no zero to remove.
• Make the country picker searchable by both "Gambia" and "The Gambia"; users type either, and a picker that only matches one is a real support ticket waiting to happen.

The country is almost entirely surrounded by Senegal, so double-check that geolocation or IP-based defaults do not preselect +221 for Gambian visitors.

Which language do Gambian OTP messages use, and why does encoding matter?

English is the official language, so most verification texts from global apps arrive in English. Wolof, Mandinka and Fula are widely spoken day to day. If your own product localizes SMS templates into Wolof, watch the encoding: letters such as ë sit outside the GSM-7 alphabet, which pushes the whole message into UCS-2 and cuts each segment from 160 characters to 70. A long localized template can split into several parts, so keep the code near the start of the message where it survives any truncation.

Why do product teams test or operate in The Gambia?

The market is small, but the use cases are concrete. Remittance and fintech apps serve a large diaspora in the UK, the US and continental Europe, and those apps need to prove that a sender abroad can onboard a recipient on a +220 number. Tourism businesses on the Atlantic coast verify guests and staff. Regional products rolling out across West Africa often test The Gambia alongside Senegal because the two markets share so many users.

A +220 number for testing confirms the full path: your form accepts it, your provider routes to it, and the code is readable by the person on the other end. Our QA testing page describes how teams fold this into release checks.

Which services currently route codes to +220 numbers?

The Gambia route lists more than 1,000 services. Popular names in the live snapshot include WhatsApp, Facebook, Telegram, Google (Gmail & YouTube), Instagram, TikTok, X (Twitter), ChatGPT (OpenAI), Microsoft & Outlook, Amazon, Discord, Snapchat, LinkedIn, Signal and imo.

Inventory changes through the day, so treat the list as indicative and confirm the route for gm before each run rather than hard-coding assumptions into a test suite.

How do I receive Gambia SMS OTP codes through the API?

Authenticate with a Bearer key that starts with or_live_ against https://otproute.com/api/v1. First call GET /api/v1/prices?country=gm&service=whatsapp to see whether that pairing is open and what it costs. Then create the activation with POST /api/v1/activations and the body {"service": "whatsapp", "country": "gm"}; the response holds the number and an activation id you should log against your test case.

Once your flow sends the SMS, the activation.sms_received webhook fires to your endpoint. Verify the X-OTPRoute-Signature header (an HMAC-SHA256 of the timestamp, a dot and the raw body, keyed with the endpoint secret) and drop requests with old timestamps. If you would rather not expose an endpoint, poll GET /api/v1/activations/{id}. Cancel unused activations with POST /api/v1/activations/{id}/cancel. Limits are 300 requests per minute, 10 keys and 5 webhook endpoints per account; the developer page and webhook capture guide go deeper on this Gambia OTP API flow.

Non-developers can do the same from the dashboard: open the OTP Gateway, pick Gambia and the service, confirm the price, order, and watch the code appear on the activation.

What if the code never reaches the +220 number?

The activation window is 20 minutes. If no SMS arrives in that time, or you cancel, the full amount returns to your wallet automatically, so a missed code costs nothing.

When a code is late, give the window time before acting. Check whether the service accepts virtual numbers, since some decline them outright. After that, retry later or try a different service route. Scripts should back off between attempts instead of firing new orders in a tight loop, which only burns inventory without improving delivery.

Can I get a long-term Gambian line, and how do payments work?

OTP Route does not offer a self-serve long-term number in The Gambia. Dedicated Numbers, which you keep while they renew, exist only for the United States and Canada and start from $1.95/month. For a lasting +220 line, email [email protected]; whether one can be arranged depends on local rules.

The account runs on a single prepaid USD wallet: pay as you go, no subscription, top-ups by card or USDT/USDC, and a PDF invoice by email for every top-up. Developers can ask for sandbox mode, which returns simulated numbers and codes for end-to-end OTP routing tests. Use numbers only for your own legitimate accounts and products, follow each service's terms, and remember that OTP Route's Acceptable Use Policy applies.

Frequently asked questions

Can I check my fintech app's +220 onboarding without travelling to Banjul?

Yes. Order a Gambia verification number from the OTP Gateway, run your onboarding, and read the code in the dashboard or via API.

What is the country code value for Gambia in API requests?

It is gm, used in both GET /api/v1/prices and POST /api/v1/activations.

How many digits does a Gambian phone number have?

Seven digits after the +220 country code, with no trunk prefix to add or remove.

What does a Gambia SMS verification cost?

From $0.20 per code; the live price per service is returned by the API and shown in the dashboard before ordering.

Will a WhatsApp code always reach a Gambian number?

No route can promise that, because services decide whether to send to a given number. If nothing arrives within 20 minutes, the charge is refunded.

Can I pay for OTP Route with stablecoins?

Yes. The wallet accepts card payments as well as USDT and USDC, and every top-up gets a PDF invoice by email.

Service names are trademarks of their respective owners. OTP Route is not affiliated with them. Use numbers lawfully, follow each service's terms and our Acceptable Use Policy.