Argentina phone number format
Country code +54, 11 digits after it. Below is the same example written every way you are likely to need it.
Example mobile number
This is a numbering-plan example, not a real subscriber’s line. It is generated from the same data the validator uses, so it always matches what the API accepts.
Check a real Argentina number
Formatting is the easy half. The validator reports whether the number is actually allocated, its line type, and a risk score — free, no signup.
Open the free phone validator →From your code
curl "https://www.layercall.com/v1/lookup/phone?phone=%2B5491123456789" \
-H "X-Api-Key: YOUR_KEY"1,000 lookups a month free, no card. Get an API key.
Questions
What is the country code for Argentina?
Argentina's country calling code is +54. In E.164 — the format almost every API, SMS gateway and CRM expects — it is written with no spaces, brackets or dashes, like +5491123456789.
How many digits is a Argentina phone number?
11 digits after the +54 country code. Written nationally it may show a leading 01 trunk prefix, which is dropped in international form.
Does the leading 01 get included when dialling Argentina from abroad?
No. The 01 is a national trunk prefix used only inside Argentina. Dialling internationally you drop it and use +54 instead — this is the single most common cause of "invalid number" errors in signup forms.
Is a correctly formatted number the same as a real one?
No, and conflating the two is the usual mistake. Formatting only says a number could exist. It does not say whether the range was ever allocated, whether it is mobile, fixed line or VoIP, or whether it is worth trusting on a signup — those need a lookup against numbering-plan data.