Grenadian +1 473 numbers for testing sign-up and login codes

Why does a +1 473 number trip up so many sign-up forms?

Grenada belongs to the North American Numbering Plan. Its numbers share country code 1 with the United States and Canada, and 473 works as the area code. In E.164 a Grenadian mobile is written +1 473 followed by seven digits. There is no trunk 0 to strip; domestic callers simply dial the seven-digit local number, while the 1 plus area code form is used from elsewhere in the plan.

That structure exposes a classic bug. Forms that see a leading +1 and assume "United States" may show the wrong flag, apply US-only validation, or route the SMS through a domestic sender profile. Region detection has to look at the area code, not just the country code. Phone libraries that map area codes to regions handle this correctly, but hand-written regexes often do not. A real Grenada verification number is the simplest way to prove your normalizer gets it right.

What brings product teams to the Grenadian market?

English is the official language, so verification texts generally arrive in English and parsing is straightforward. The reasons to test are mostly about reach and correctness rather than translation:

• launching a fintech, travel or marketplace product across the Eastern Caribbean;
• confirming that Caribbean customers can register without a US number;
• regional operations teams that verify business profiles on behalf of island-based clients;
• regression suites that deliberately include a non-US +1 case.

For a wider look at matching routes to markets, see country routing for OTP.

Which services can a Grenada number verify?

Grenadian routes currently list more than 800 services. Frequently used ones include WhatsApp, Facebook, Instagram, Uber, Telegram, Google (Gmail & YouTube), TikTok, Snapchat, X (Twitter), Microsoft & Outlook, Amazon, Airbnb and LinkedIn.

Inventory on smaller island routes changes during the day. Read availability from the API on each run rather than assuming yesterday's result still holds.

How do I fetch a Grenada SMS OTP over the API?

Authenticate against https://otproute.com/api/v1 with a Bearer key (prefix or_live_). The country id for Grenada is gd.

1. GET /api/v1/prices?country=gd&service=<id> shows the live price and whether the pair is open.
2. POST /api/v1/activations with {"service": "whatsapp", "country": "gd"} reserves a number and starts the clock.
3. Feed the returned number to your test, formatted as +1473 plus seven digits.
4. Receive activation.sms_received on a webhook endpoint, or poll GET /api/v1/activations/{id} at a modest interval.
5. Cancel unused orders with POST /api/v1/activations/{id}/cancel.

Before trusting a webhook, check the X-OTPRoute-Signature header: HMAC-SHA256 of the timestamp, a dot and the raw body, using the endpoint secret, with stale timestamps rejected. Each account can register up to 5 webhook endpoints and 10 API keys. The developer hub collects the reference material.

What does the dashboard path look like for Grenada?

Non-developers can skip the API entirely. Choose Grenada in the OTP Gateway, select the service, check the price, and confirm. The number appears at once; paste it where the code is requested and watch the activation, which updates when the message lands. Every order made in the browser also shows up in the same history the API reads.

Is a long-term Grenadian line available, or only one-time numbers?

Only one-time OTP Gateway numbers are offered for Grenada. Sharing country code 1 does not change that: dedicated lines are sold self-serve solely in the United States and Canada, from $1.95/month, with inbound SMS forwarded to your webhook, outbound SMS and browser calling. Teams whose test account must log in again next month usually keep that account on a US or Canadian line instead. For a Grenadian long-term number, email [email protected]; whether one can be offered depends on local regulation.

Why might a Grenada code fail to arrive?

A few checks cover most misses:

• the service may not accept virtual numbers, which the automatic refund is designed for;
• the route may be temporarily quiet, so give the window time and retry later or with another service route;
• your own form may have mangled the number, for example by treating 473 as a US area code and reformatting it.

Avoid ordering again in a tight loop; spacing attempts out is kinder to the service and to your wallet.

How do payment and refunds work?

You top up one prepaid USD wallet by card or with USDT/USDC and pay as you go, with no subscription. PDF invoices arrive by email for each top-up. When no SMS shows up inside the 20-minute window, or you cancel first, the full charge goes back to the wallet automatically. Sandbox mode, available on request for development accounts, returns simulated numbers and codes for integration tests. Use OTP Route only for your own products and accounts, follow each service's terms, and keep within the Acceptable Use Policy. Rates are on the pricing page.

Frequently asked questions

Is a Grenada number the same as a US number because both start with +1?

No. Grenada uses area code 473 inside the shared +1 plan, so it is a separate country with its own routes and the country id gd.

How should I format a Grenadian number for storage?

Use E.164: +1473 followed by the seven-digit local number. There is no trunk 0 to remove.

How much does a +1 473 number for testing cost?

Each Grenadian code costs from $0.20 per code, with the service setting the final figure, which you see before ordering and get back if nothing arrives.

Can I test my Caribbean sign-up flow without a Grenadian SIM?

Yes. Order a Grenada verification number on the OTP Gateway and read the code in the dashboard or through the API.

What language do Grenadian verification texts use?

Usually English, since it is the official language, although the wording follows each service's own template.

Does OTP Route offer dedicated numbers in Grenada?

No self-serve option exists there; dedicated lines are a US and Canada product. You can ask the team at [email protected] about other options.

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.