Overview
A country calling code API for phone inputs, signup forms and SMS routing. Pass a two-letter ISO country code such as FR and get its calling codes (+33), common name and official name; calling codes come back as an array because some countries use more than one. Add dialing=true for the international (exit) prefix on every plan. Paid plans add the region and subregion, and in the dialing block the national trunk prefix, the other countries that share the calling code, valid number lengths and example numbers for fixed-line, mobile and toll-free lines, taken from Google's libphonenumber metadata. To check whether a specific number is valid, use Phone Number Validator.
Live Test Country Calling Codes Source →
Formula
One function covers the whole catalog: the first argument names the source, the next are its inputs, and the field after them says which single value lands in the cell. Formulas covers the grammar that applies to all of them.
=VERVE("callingcode", A2, "officialName")=VERVE.CALL("callingcode", A2, "officialName")A2 holds the country you are looking up. Drag the formula down and each row resolves on its own.
With literal values
Nothing has to come from a cell — typed values work the same way.
=VERVE("callingcode", "FR", "officialName")=VERVE.CALL("callingcode", "FR", "officialName")Inputs
Required inputs are positional, in the order below, followed by the field. Everything else is passed as a "name", value pair after that — the same shape as SUMIFS. Premium inputs are accepted on every plan but only take effect on plans that include them.
| Input | Type | Where it goes | Description |
|---|---|---|---|
countryRequired | string | argument 2 (A2) | The 2 letter ISO code for the country (e.g. FR) length 2–2 |
dialingOptional | boolean | "dialing", value | Include the dialing block: the international prefix, and (paid plans) the national prefix, regions sharing the calling code, valid number lengths and example numbers |
Passing an option
=VERVE("callingcode", A2, "officialName", "dialing", "true")=VERVE.CALL("callingcode", A2, "officialName", "dialing", "true")What lands in your sheet
The field — the argument after the inputs — is what makes the formula resolve to one cell. Its value is a dot-path from the table below, so swapping it is how you pull a different value — one formula per column.
Seeing everything at once
Leave the field out and the formula returns the whole response instead: two columns, field name on the left and value on the right, spilling from the cell you typed in.
=VERVE("callingcode", A2)=VERVE.CALL("callingcode", A2)The second row's table would land on top of the first's, and every cell after the first reads #REF! (#SPILL! in Excel). Keep one per sheet, or name a field, and leave the cells below and to the right empty.
Response fields
Paths are relative to data. Each one is exactly what the field argument accepts, so swapping it is how you pull a different value into a cell. On a plan without a Premium field the cell reads #PREMIUM(field) rather than a value, so a locked field never looks like a real answer.
| Use as the field | Type | Example cell value | Description |
|---|---|---|---|
country | string | France | Full country name (e.g., France, United States) |
officialName | string | French Republic | Official country name (e.g., French Republic) |
countryCode | string | FR | Two-letter ISO country code (e.g., FR, US) |
callingcodes | array | ["+33"] | Array of international calling codes (e.g., +33) |
regionPremium | string | Europe | Geographic continent/region (e.g., Europe, Asia, Americas) |
subregionPremium | string | Western Europe | Specific geographic subregion (e.g., Western Europe) |
dialing | object | {…} | Dialing rules for the country, present only when dialing=true; null where the phone numbering data has no entry for the country |
dialing.internationalPrefix | string | 00 | Prefix dialed to call out of the country (e.g. 00, 011); a ~ means wait for a second dial tone; null where carriers each use their own code |
dialing.nationalPrefixPremium | string | 0 | Trunk prefix dialed before domestic numbers and dropped when calling from abroad (e.g. 0); null where the country has none |
dialing.sharedWithPremium | array | [] | Other ISO country codes that share this calling code (e.g. RU for KZ) |
dialing.possibleLengthsPremium | object | {…} | Valid national number lengths for fixedLine, mobile and tollFree; null for a line type the country does not have |
dialing.possibleLengths.fixedLinePremium | array | [9] | |
dialing.possibleLengths.mobilePremium | array | [9] | |
dialing.possibleLengths.tollFreePremium | array | [9] | |
dialing.exampleNumbersPremium | object | {…} | An example fixedLine, mobile and tollFree number, each in international, national and E.164 format; null for a line type the country does not have |
dialing.exampleNumbers.fixedLinePremium | object | {…} | |
dialing.exampleNumbers.fixedLine.internationalPremium | string | +33 1 23 45 67 89 | |
dialing.exampleNumbers.fixedLine.nationalPremium | string | 01 23 45 67 89 | |
dialing.exampleNumbers.fixedLine.e164Premium | string | +33123456789 | |
dialing.exampleNumbers.mobilePremium | object | {…} | |
dialing.exampleNumbers.mobile.internationalPremium | string | +33 6 12 34 56 78 | |
dialing.exampleNumbers.mobile.nationalPremium | string | 06 12 34 56 78 | |
dialing.exampleNumbers.mobile.e164Premium | string | +33612345678 | |
dialing.exampleNumbers.tollFreePremium | object | {…} | |
dialing.exampleNumbers.tollFree.internationalPremium | string | +33 801 23 45 67 | |
dialing.exampleNumbers.tollFree.nationalPremium | string | 0 801 23 45 67 | |
dialing.exampleNumbers.tollFree.e164Premium | string | +33801234567 |
Filling a whole column
Both platforms make one batched call for a column rather than one request per cell, and both cost the same — 1 credit per row looked up. How you write it differs, because the two runtimes batch at different points.
=VERVE("callingcode", A2:A100, "officialName")In Google Sheets, give the arguments ranges and the answers spill down from the cell you typed in. Custom functions there run synchronously and in isolation, so dragged cells cannot be coalesced — the range form is how a column becomes one call. The field is required here: a per-row two-column table has nowhere to spill. Use a full column per input (A2:A100, not A2) — a single-cell reference is read as row 1 only and the rest of the column comes back blank.
In Excel, type the formula once and fill down — no range form and none needed, because its runtime is asynchronous and the add-in coalesces the calls a fill produces into a single batched request. Do not hand VERVE.CALL a range: Excel flattens it into positional arguments, so A2:A100 arrives as a hundred separate arguments and the cell reads #ERR rather than filling.
Either way, column A holds your country values and the answers land beside them, one row each, blank rows skipped.
When a cell doesn't fill
A failed lookup returns readable text starting with #ERR rather than a spreadsheet error, because Excel cannot show a custom message on a real error — you would get a bare #VALUE! with no reason. The trade-off is that IFERROR() will not catch it; test with LEFT(cell, 4) = "#ERR" instead. Error handling covers the rest.
| Cell reads | What happened |
|---|---|
#ERR Not connected | No API key saved. Open the side panel and connect your account. |
#ERR Replace <name> with a cell or value | A preview formula was copied as-is. Swap the placeholder for a cell reference. |
#ERR No "x" in callingcode | An option name this source does not take. The message lists the ones it does. |
#ERR No data point "…" | The field path is not in the response. Check it against the table above. |
#PREMIUM(field) | The field exists but your plan does not include it. |
#ERR Out of credits | The cycle's credits are spent. Usage resets on your billing date. |
Before the formula works
The add-in reads the API key you saved once in the side panel — the key never goes in the formula, so a shared sheet does not leak it and a collaborator without access simply sees the last calculated values.
- Install the add-in for Google Sheets or Excel.
- Open the side panel and sign in, or paste a key from your dashboard.
- Type the formula above into any cell.
Use cases
- Signup Form Prepopulation
- When users pick their nationality on signup forms, frontends populate the international phone prefix automatically to avoid input errors.
- Contact Record Normalization
- Clean customer address books by appending verified country dialing prefixes to local phone numbers stored with ISO country codes.
- SMS Gateway Routing
- To dispatch two-factor authentication alerts, messaging systems verify recipient phone prefixes against their registered account country.
- Logistics Contact Sheets
- Shipping platforms convert destination ISO codes into international dialing prefixes so couriers can contact international package recipients.
Other ways to use Country Calling Codes
Set up Country Calling Codes on VerveSheets, or reach the same source a different way. Your VerveSheets account and credits work on all of them — one key, one balance.
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