How to Call Austria from the US

To call Austria from the US, dial 011 + 43 + area code (drop leading 0) + local number. Vienna example: 011-43-1-XXXXXXX. Graz: 011-43-316-XXXXXX. Austrian mobile: 011-43-664-XXXXXXX (prefix starts 06 domestically, no leading 0).

The 011 is the US international exit code. The 43 is Austria’s country code. This pattern works from any US landline or mobile — on a smartphone you can substitute + for 011, dialing +43 1 XXXXXXX.

How to dial Austria from the US

Follow these four steps every time:

1. Dial 011 — the US exit code for all international calls. On a mobile keypad, long-press 0 to enter + as a shortcut; + works identically to 011 on smartphones.
2. Dial 43 — Austria’s ITU-assigned country code, used for every Austrian number regardless of city or type.
3. Dial the area code without its leading 0. Austrian numbers in domestic format start with a 0 trunk prefix. That 0 is dropped for international dialing. Vienna’s domestic prefix 01 becomes 1; Graz’s 0316 becomes 316.
4. Dial the local subscriber number exactly as written. Total digit count after the area code varies by city and number type.

The complete pattern: 011 43 <area code minus leading 0> <local number>.

If you see an Austrian number already formatted with +43 (common on business cards and websites), replace the + with 011 from a US landline, or dial it as-is from a smartphone.

Austrian area codes by city

Austrian landlines use geographic area codes that range from one to four digits — larger cities get shorter codes, smaller towns get longer ones. The leading 0 shown in domestic format is dropped for all international calls.

City	Domestic prefix	Dial from US (after 011 43)
Vienna	01	1
Graz	0316	316
Linz	0732	732
Salzburg	0662	662
Innsbruck	0512	512
Klagenfurt	0463	463

Austrian mobile numbers do not use city area codes. Mobile prefixes start with 06 in domestic format — common ranges include 0650, 0660, 0664, 0676, 0680, and 0699, each assigned to a network operator. Example: a number beginning 0664 is dialed from the US as 011 43 664 XXXXXXX (drop the leading 0).

How Austrian numbering works

Austria’s country code +43 is assigned by the ITU under the E.164 numbering plan and covers every Austrian landline, mobile, and service number.

Austrian numbers have no single fixed length: area codes run from one to four digits, and the subscriber number that follows fills out the rest. Major cities like Vienna use a short one-digit area code, which leaves room for longer local numbers, while smaller towns carry longer area codes.

Every domestic number begins with a single leading 0 — the trunk prefix — which you drop entirely when dialing from abroad, replacing it with 011 43 from the US or +43 in E.164 notation. Mobile numbers sit in the 06 range and identify a carrier network rather than a geographic region.

Time zones: CET and CEST

Austria observes two time settings across the year:

• CET (Central European Time) — UTC+1, in effect from the last Sunday of October through the last Sunday of March (Austria’s “winter time”).
• CEST (Central European Summer Time) — UTC+2, in effect from the last Sunday of March through the last Sunday of October.

US time zone	Offset during CET (Oct–Mar)	Offset during CEST (Mar–Oct)
Eastern (ET)	Austria +6 h	Austria +6 h*
Central (CT)	Austria +7 h	Austria +7 h*
Mountain (MT)	Austria +8 h	Austria +8 h*
Pacific (PT)	Austria +9 h	Austria +9 h*

*Note: the US and EU do not switch clocks on the same Sunday each spring. For roughly two weeks after the EU spring switch (before the US changes), Austria is temporarily one hour further ahead than usual — a call at 8 AM ET reaches Austria at 3 PM rather than 2 PM. Worth confirming when scheduling recurring calls.

The reliable overlap window for standard business hours is 8 AM–11 AM ET, reaching Austrian offices between 2 PM and 5 PM local time before most close.

US to Austria calling costs

Costs vary significantly by calling method:

• US carrier per-minute (no plan): major US carriers can charge several dollars per minute to Austria without an international add-on. Fine for a call or two per month.
• Carrier international add-on packages: a monthly fee reduces the per-minute rate sharply. Worthwhile once you exceed a modest amount of monthly calling.
• VoIP providers (including DialPhone): flat per-minute rates to Austria that typically undercut carrier add-ons, with no monthly minimum. For US–Austria business calling at any volume, a VoIP plan on DialPhone business phone pays for itself quickly.
• Free app-to-app (WhatsApp, Signal): works if the Austrian side also uses the app and has Wi-Fi/data. Not viable for reaching most Austrian landlines or businesses.

See DialPhone pricing for current per-minute Austria rates included in each plan tier.

Calling Austrian mobile vs landline from the US

From a US perspective, the dialing procedure is the same: 011 43 <number without leading 0>. The difference lies in the number format itself:

• Landlines have a geographic area code (1–4 digits) followed by a local subscriber number. Vienna uses the single-digit 1; regional cities use 3–4 digit codes.
• Mobiles start with a network prefix in the 06 range (650, 660, 664, 676, 680, 699 after the country code). There is no separate area code.

Identifying the type from the number: any Austrian number starting with 06 (domestic format) is a mobile. Numbers starting with 01 through 05, or other geographic prefixes, are landlines or service numbers.

Calling cost note: Austrian mobile destinations can be priced higher per minute than landlines on some US carrier plans. VoIP providers including DialPhone typically apply a single flat rate regardless of landline vs mobile destination.

SMS to Austria and business use cases

US-to-Austria SMS works from most US mobile plans — the same international add-on that covers calls usually covers texts. Business-grade SMS (A2P, bulk, or CRM-triggered) requires a provider supporting international SMS routing to Austrian networks.

US–Austria B2B context where this matters most:

• Industrial and machinery suppliers: US firms coordinating with Austrian manufacturing and engineering partners benefit from time-zone-aware scheduling and a recognizable +43 callback presence.
• Financial services and banking: US asset managers maintaining Vienna-based counterparties or European relationships find that a local Austrian DID lands callbacks in a familiar namespace.
• Technology and SaaS: US software companies selling into Austrian mid-market accounts find that a verified caller ID improves answer rates when reaching unfamiliar contacts.

For outbound, DialPhone routes US-to-Austria calls with STIR/SHAKEN attestation, so your caller ID carries an anti-spoofing credential rather than appearing as an unverified international number — a meaningful factor for answer rates in markets where call screening is common.

FAQ

Calling Austria FAQ

What is the country code for Austria? +

Austria's country code is +43. From a US landline or mobile, you reach it by dialing the US international exit code 011 first, making the full prefix 011 43. From a smartphone that supports E.164 dialing you can substitute + for 011, so +43 works identically.

Do I need to drop the leading 0 when calling Austria from the US? +

Yes. Austrian numbers in domestic format start with a 0 — for example, Vienna is written 01 XXXXXXX locally. That leading 0 is Austria's trunk prefix and is only used for calls placed within Austria.

When calling from the US, replace the entire leading 0 with 011 43. So 01 512 3456 becomes 011 43 1 512 3456. Leaving the 0 in is the most common reason a US-to-Austria call fails to connect.

How do I call an Austrian mobile number from the US? +

Austrian mobile numbers start with 06 in domestic format — common network prefixes include 0650, 0660, 0664, 0676, 0680, and 0699. Dial 011 + 43 + the mobile number without its leading 0.

Example: a number written as 0664 1234567 is dialed from the US as 011 43 664 1234567. Mobile numbers do not have a geographic area code — the prefix identifies the carrier network rather than a city.

What is the best time to call Austria from the US? +

Austria is 6 hours ahead of US Eastern Time during standard time (UTC+1 vs UTC-5) and 5 hours ahead during the brief US daylight-saving gap. The reliable business-hours overlap window is 8 AM–11 AM ET, which lands roughly in the 2–5 PM range in Austria — still within office hours.

Note: the US and EU switch clocks on different Sundays each spring, creating a roughly two-week window where the offset temporarily shifts by one hour.

How much does it cost to call Austria from the US? +

Standard US carrier rates without an international plan can run several dollars per minute to Austria. Carrier international add-on packages reduce this to a lower per-minute rate for a monthly fee.

VoIP providers including DialPhone charge flat per-minute rates to Austrian destinations that are typically lower than carrier add-on plans, with no monthly minimum for low-volume callers.

Can I call Austrian toll-free (0800) numbers from the US? +

Austrian 0800 freephone numbers are free only when dialed from within Austria. Calling them from the US will either fail to connect or connect at a standard international rate — sometimes higher than calling a geographic number.

Ask your Austrian contact for their geographic +43 number (for example a Vienna 1 or Graz 316 line) as a reliable alternative when calling from abroad.

What is the difference between CET and CEST for calling Austria? +

CET (Central European Time) is UTC+1 and applies from late October to late March — Austria's standard time, 6 hours ahead of US Eastern. CEST (Central European Summer Time) is UTC+2 and applies from late March to late October, keeping Austria 6 hours ahead of US Eastern for most of the year.

The EU and US change clocks on different Sundays each spring, so for roughly two weeks Austria shifts before the US does and the offset temporarily differs by one hour.

How do I save an Austrian number in my phone contacts? +

Save Austrian numbers in full E.164 international format: +43 followed by the area code without its leading 0 and the local number. For example, a Vienna number 01 512 3456 should be saved as +43 1 512 3456.

This format works from any country without modification, prevents dialing errors when roaming, and is the standard format expected by CRMs and VoIP platforms including DialPhone.

Start calling Austria today

Whether you make occasional calls to an Austrian supplier or run a team with daily US–Austria volume, the right setup eliminates per-minute sticker shock and missed calls.

• DialPhone pricing — compare per-minute Austria rates across plans
• Start a free trial — call Austria from day one, no commitment
• DialPhone business phone — full VoIP platform with international DID support
• AI receptionist — handle inbound calls from Austria 24/7

Related guides

• How to call Germany from the US — same exit-code pattern, +49
• How to call internationally from the US — exit code 011, country codes, and per-country mobile rules
• STIR/SHAKEN explained — why caller ID attestation matters for international calls

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Part of the How to Call Internationally from the US hub — exit code 011, country codes, and the per-country mobile rules.

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