curl -X GET 'https://api.countrystatecity.in/v1/phone' \
  -H 'X-CSCAPI-KEY: YOUR_API_KEY'

curl -X GET 'https://api.countrystatecity.in/v1/phone?code=%2B1' \
  -H 'X-CSCAPI-KEY: YOUR_API_KEY'

curl -X GET 'https://api.countrystatecity.in/v1/phone?code=91' \
  -H 'X-CSCAPI-KEY: YOUR_API_KEY'

const response = await fetch(
  'https://api.countrystatecity.in/v1/phone?code=' + encodeURIComponent('+44'),
  { headers: { 'X-CSCAPI-KEY': 'YOUR_API_KEY' } }
);

const entries = await response.json();
// entries: [{ country: "GB", dial_code: "+44", iso2: "GB", iso3: "GBR" }, ...]

import requests

response = requests.get(
  'https://api.countrystatecity.in/v1/phone',
  params={'code': '+1'},
  headers={'X-CSCAPI-KEY': 'YOUR_API_KEY'}
)

nanp_countries = response.json()
print(f"{len(nanp_countries)} countries share +1")

[
  { "country": "AG", "dial_code": "+1", "area_code": "268", "iso2": "AG", "iso3": "ATG" },
  { "country": "AI", "dial_code": "+1", "area_code": "264", "iso2": "AI", "iso3": "AIA" },
  { "country": "BB", "dial_code": "+1", "area_code": "246", "iso2": "BB", "iso3": "BRB" },
  { "country": "BS", "dial_code": "+1", "area_code": "242", "iso2": "BS", "iso3": "BHS" },
  { "country": "CA", "dial_code": "+1",                    "iso2": "CA", "iso3": "CAN" },
  { "country": "US", "dial_code": "+1",                    "iso2": "US", "iso3": "USA" }
]

[
  { "country": "IN", "dial_code": "+91", "iso2": "IN", "iso3": "IND" }
]

{
  "status": "error",
  "message": "Invalid dial code. Provide a non-empty value (e.g., +1, 44)."
}

{
  "status": "error",
  "message": "Invalid dial code format. Expected digits (e.g., 91, 1, 44)."
}

{
  "status": "error",
  "message": "This feature is not available on your current plan.",
  "details": {
    "feature": "phoneDialCode",
    "currentTier": "community",
    "requiredTier": "starter",
    "upgradeUrl": "https://app.countrystatecity.in/pricing"
  }
}