Austrian business phone number
A Firmenbuch extract, an address in Austria and the legal representative’s ID.
Local and mobile, document by document
Required documents, local and mobile
Austrian local number
+43 · For businesses only
Required address
Local address, within the area code’s zone
The company’s address must be in the city or region covered by the area code of the chosen number. A PO box is not accepted.
To provide
- Company register extract (Firmenbuch)DocumentOr another registration document: it proves the company exists.
- Proof of address within the area code’s zoneDocumentAny of: the Firmenbuch extract if it shows this address, an energy, water or telecom bill, a tax notice, a rent receipt or a property deed. A PO box is not accepted.
- Legal representative’s IDDocumentShowing their name: identity card, passport or identity confirmation issued by a bank.
Austrian mobile number
+43 · For businesses only
Required address
Address in Austria
The company’s address must be in Austria.
To provide
- Company register extract (Firmenbuch)DocumentOr another registration document: it proves the company exists.
- Proof of address in AustriaDocumentAny of: the Firmenbuch extract if it shows this address, an energy, water or telecom bill, a tax notice, a rent receipt or a property deed.
- Legal representative’s IDDocumentShowing their name: identity card, passport or identity confirmation issued by a bank.
Indicative list updated on 15 October 2026. Requirements are set by each country’s authorities and may change; the exact list is confirmed when you order the number.
Getting a Austrian virtual phone number for your business
Austria is often prospected right after Germany, but with an Austrian number: a +49 number looks like a foreign call there. A 01 number places you in Vienna, a 0662 in Salzburg.
The Austrian application has one particularity: in addition to the registration extract, you need the legal representative’s ID. An identity card, a passport or an identity confirmation issued by a bank are accepted.
The address must be within the area code’s zone for a landline, and in Austria for a mobile, with proof to back it up.
Country code and number format
- Local (landline)
- +43 +43, then the city code without the 0 and the number; the length varies. 1 Vienna, 316 Graz, 662 Salzburg, 512 Innsbruck, 732 Linz. Example: +43 1 234 5678.
- Mobile
- +43 +43 6, then 8 to 10 digits (06xx nationally). Example: +43 664 123 4567.
What you need to know
The Firmenbuch
The Austrian company register is called the Firmenbuch. Its extract proves the company exists and, if it shows the address, also serves as proof of address.
Tightly regulated advertising calls
Section 174 of the Austrian Telecommunications Act (TKG 2021) prohibits calls for advertising purposes without the subscriber’s prior consent. The law makes no exception for businesses, and the Austrian Economic Chamber (WKO) specifies that the ban also covers first contact with a prospect.
Vienna and the federal states
Vienna has the shortest area code (1). Other cities have a 3- or 4-digit area code, and the number that follows is correspondingly shorter.
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