IBAN Validator checks an IBAN's mod-97 checksum, its length and format for the country, and national check digits where the country defines them. It returns whether the IBAN is valid, the country and the reasons it fails. Paid plans add the bank code, branch code and account number, the correct check digits and the SEPA flag.
It's one of 250+ live sources you reach with a single =VERVE() function — served from APIVerve's production data engine, billed at 2 credits per resolved cell, and refreshed on whatever cadence you set. No API keys to wrangle, no scripts, no exports.
A real example — the input you type, and the values you can pull from it. Click any cell to see the formula behind it.
Run =VERVE("ibanvalidator", "GB29NWBK60161331926819", "field", "isValid") down a column of inputs and let each row tell you whether it's real and safe — catch the bad ones before they hit your workflow.
Add a validity column beside your contacts so you can filter, sort, or conditionally format the rows worth keeping.
Wrap =VERVE("ibanvalidator", "GB29NWBK60161331926819", "field", "isValid") in an IF and flag anything that fails, turning a raw import into a checked, trustworthy sheet.
The same function works in both apps — install once, sign in with your key, and type it into any cell.
Install from the Workspace Marketplace, then drop the formula into a cell. Autocomplete suggests the source and its fields.
=VERVE("ibanvalidator", "GB29NWBK60161331926819", "field", "isValid")Same source, same arguments, same key — in Excel on desktop, the web, or mobile. Excel namespaces it as VERVE.CALL. Drag to fill a whole column.
=VERVE.CALL("ibanvalidator", "GB29NWBK60161331926819", "field", "isValid")Add a field name as the last argument to land just that value in the cell.
=VERVE("ibanvalidator", "GB29NWBK60161331926819", "field", "isValid")=VERVE("ibanvalidator", "GB29NWBK60161331926819", "field", "formatted")=VERVE("ibanvalidator", "GB29NWBK60161331926819", "field", "countryCode")=VERVE("ibanvalidator", "GB29NWBK60161331926819", "field", "countryName")=VERVE("ibanvalidator", "GB29NWBK60161331926819", "field", "checkDigits")=VERVE("ibanvalidator", "GB29NWBK60161331926819", "field", "expectedLength")=VERVE("ibanvalidator", "GB29NWBK60161331926819", "field", "length")=VERVE("ibanvalidator", "GB29NWBK60161331926819", "field", "errors")=VERVE("ibanvalidator", "GB29NWBK60161331926819", "field", "bban")=VERVE("ibanvalidator", "GB29NWBK60161331926819", "field", "bankCode")=VERVE("ibanvalidator", "GB29NWBK60161331926819", "field", "branchCode")=VERVE("ibanvalidator", "GB29NWBK60161331926819", "field", "accountNumber")Premium marks data included on paid plans. On the Free plan a marked field is withheld and a marked input is ignored — either way the cell reads #PREMIUM(name) instead of a value, so a gated answer can never be mistaken for a real one. Everything unmarked works on every plan. Compare plans
Everything you need to wire it into a sheet.