SMS API for Guam: bulk SMS to +1 numbers
Guam
Calling code +1
- Per SMS segment
- $0.00617
- Messages for $100
- 16,207
- Local language
- English
- Encoding
- GSM-7
What a bulk SMS send to Guam costs
| Messages | 1 segment | 2 segments |
|---|---|---|
| 1 | $0.00617 | $0.01234 |
| 1,000 | $6.17 | $12.34 |
| 10,000 | $61.70 | $123.40 |
| 100,000 | $617.00 | $1,234.00 |
Number format in Guam
Guam uses the North American Numbering Plan: +1, a three-digit area code and a seven-digit number, such as +1 671 300 1234. The API reads the area code (671 here) to price the number as Guam rather than the United States, so keep the full eleven digits in your list.
Alphabet and segments
English text stays inside the GSM-7 alphabet, so one segment to Guam holds 160 characters and each part of a longer text 153. Watch for curly quotes and emoji copied from other tools: one of them moves the whole text to Unicode at 70 characters per segment, and POST /v1/estimates shows the encoding before you send.
Time zone and timing
Guam keeps UTC+10 all year with no clock change, so 09:00 in Guam is always 23:00 UTC. send_at takes UTC or any ISO 8601 offset, and the console scheduler converts from your own time zone.
Send to Guam with one request
The answer comes back at once with the message id, the country the number was matched to (GU) and the price. A delivered or failed event follows on your webhook, and a failed message is refunded.
For a list, send the same text to up to 10,000 numbers with POST /v1/batches, or a personal text per number in messages.
curl https://bulksmsapi.cc/v1/messages \
-H "Authorization: Bearer $BULKSMSAPI_KEY" \
-H "Content-Type: application/json" \
-d '{"to": "+16713001234", "text": "Your Northwind code is 482913. It expires in 10 minutes."}'const res = await fetch("https://bulksmsapi.cc/v1/messages", {
method: "POST",
headers: { Authorization: `Bearer ${process.env.BULKSMSAPI_KEY}`, "Content-Type": "application/json" },
body: JSON.stringify({ to: "+16713001234", text: "Your Northwind code is 482913. It expires in 10 minutes." }),
});
console.log(await res.json()); // price: "0.00617", country: "GU"import json, os, urllib.request
req = urllib.request.Request(
"https://bulksmsapi.cc/v1/messages",
data=json.dumps({"to": "+16713001234", "text": "Your Northwind code is 482913. It expires in 10 minutes."}).encode(),
headers={"Authorization": "Bearer " + os.environ["BULKSMSAPI_KEY"], "Content-Type": "application/json", "User-Agent": "northwind-app/1.0"},
method="POST",
)
with urllib.request.urlopen(req) as res:
print(json.load(res)["price"]) # "0.00617"What developers send to Guam
Booking confirmations
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Reservation reminders
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Event notifications
Cultural venues in Dededo notify attendees about festival times and ticket availability.
More countries in Oceania
SMS to Guam: questions
More answers on accounts, payments and the API are in the FAQ.
How much does it cost to send bulk SMS to Guam?
How many SMS to Guam does a $100 top-up send?
How do I write Guam numbers for the API?
Should SMS messages be sent in English or Chamorro?
Are there peak times for SMS traffic?
Start sending to Guam
Create an account, top up from $40 and send to Guam at $0.00617 per segment, from the console or with one API call.