How to Call Romania from the US

To call Romania from the US, dial 011 + 40 + number (drop the leading 0). Bucharest landline example: 011-40-21-XXX-XXXX. Cluj-Napoca: 011-40-264-XXX-XXX. Romanian mobile: 011-40-722-XXX-XXX (prefix 07, drop only the leading 0).

The 011 is the US international exit code. The 40 is Romania’s country code. This pattern works from any US landline or mobile — on a smartphone you can substitute + for 011, dialing +40 21 XXX XXXX.

How to dial Romania 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 40 — Romania’s ITU-assigned country code under the E.164 numbering plan.
3. Drop the leading 0 from the Romanian number. Romanian numbers in domestic format start with a 0 trunk prefix. That single 0 is dropped for international dialing. Bucharest’s domestic prefix 021 becomes 21; a mobile 0722 becomes 722.
4. Dial the remaining digits exactly as written. Romanian numbers are 10 digits domestically, which leaves 9 digits to dial after the country code.

The complete pattern: 011 40 <number minus the leading 0>.

If you see a Romanian number already formatted with +40 (common on business cards and websites), replace the + with 011 from a US landline, or dial it as-is from a smartphone.

Romanian area codes by city

Romanian landlines use geographic area codes assigned by ANCOM (the National Authority for Management and Regulation in Communications). The leading 0 shown in domestic format is dropped for all international calls.

City	Domestic prefix	Dial from US (after 011 40)
Bucharest	021	21
Bucharest (alternative operators)	031	31
Cluj-Napoca	0264	264
Timișoara	0256	256
Iași	0232	232
Constanța	0241	241
Brașov	0268	268

Romanian mobile numbers do not use city area codes. Mobile numbers (after the country code) start with 7 — written as 07 in domestic format and assigned to the national mobile networks. Example: a number beginning 0722 is a mobile; dialed from the US as 011 40 722 XXX XXX.

How Romanian numbering works

Romania uses a 10-digit national numbering plan governed by ANCOM, the national telecom regulator.

Every Romanian number is written with a single leading 0 (the trunk prefix) in domestic format. Landlines carry a geographic area code beginning 02 or 03 — for example 021 and 031 for Bucharest, 0264 for Cluj-Napoca. Mobile numbers begin 07 and have no separate area code.

When you call internationally, you replace only that single leading 0 with the international access sequence: 011 40 from the US, or +40 in E.164 notation. You always dial exactly 9 digits after the country code, whether the destination is a landline or a mobile.

A common mistake is dropping too much: with a mobile like 0722 123 456, you remove only the first 0, keeping the 7. The result is 011 40 722 123 456, not 011 40 22 123 456.

Time zones: EET and EEST

Romania observes two time settings across the year:

• EET (Eastern European Time) — UTC+2, in effect from the last Sunday of October through the last Sunday of March (Romania’s “winter time”).
• EEST (Eastern European Summer Time) — UTC+3, in effect from the last Sunday of March through the last Sunday of October.

US time zone	Offset during EET (Oct–Mar)	Offset during EEST (Mar–Oct)
Eastern (ET)	Romania +7 h	Romania +8 h
Central (CT)	Romania +8 h	Romania +9 h
Mountain (MT)	Romania +9 h	Romania +10 h
Pacific (PT)	Romania +10 h	Romania +11 h

Important for business callers: the US and EU do not switch clocks on the same Sunday each spring. For a short window after the EU spring switch (before the US changes), Romania is temporarily one hour further ahead than usual. During that window, a call at 8 AM ET reaches Romania an hour later than the table suggests — worth confirming when scheduling recurring calls.

The reliable overlap window for standard business hours is 8 AM–10 AM ET, reaching Romanian offices between 3 PM and 5 PM local time before most close.

US to Romania calling costs

Costs vary significantly by calling method:

• US carrier per-minute (no plan): AT&T and Verizon charge approximately $2–$3 per minute to Romania without an international add-on. Fine for a call or two per month.
• Carrier international add-on packages: a monthly fee reduces per-minute rates substantially. Worthwhile once you call Romania regularly.
• VoIP providers (including DialPhone): flat per-minute rates to Romania that typically undercut carrier add-ons, with no monthly minimum. For US–Romania business calling at any volume, a VoIP plan on DialPhone business phone pays for itself quickly.
• Free app-to-app (WhatsApp, Signal): works only if the Romanian side also uses the app and has Wi-Fi or data. Not viable for reaching most Romanian landlines or businesses.

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

Calling Romanian mobile vs landline from the US

From a US perspective, the dialing procedure is the same: 011 40 <number minus the leading 0>. The difference lies in the number format itself:

• Landlines have a geographic area code (021, 031, 0264, etc.) followed by a local number. After dropping the leading 0, you dial 9 digits.
• Mobiles start with 07 in domestic format and have no separate area code. After dropping the leading 0, you again dial 9 digits, beginning with 7.

Identifying the type from the number: any Romanian number starting with 07 (domestic format) is a mobile. Numbers starting with 02 or 03 are landlines. Calling cost note: Romanian 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 Romania and business use cases

US-to-Romania 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 that supports international SMS routing to Romanian networks.

US–Romania B2B context where this matters most:

• Technology and software outsourcing: Romania is a major nearshore engineering hub, and US companies coordinate daily with development teams in Bucharest, Cluj-Napoca, and Iași. Reliable caller ID and time-zone-aware scheduling keep stand-ups and releases on track across a 7–8 hour gap.
• Business process and shared services: US firms running support or finance operations out of Romania benefit from a recognizable number presence so callbacks land cleanly rather than as unverified international calls.
• Professional services: US legal, consulting, and recruitment teams with Romanian counterparties find that a local Romanian DID and verified caller ID improve answer rates.

DialPhone’s AI receptionist helps absorb the time-zone asymmetry: when a Romanian contact calls your US DialPhone number outside US business hours, the AI receptionist answers, qualifies the inquiry, and routes or escalates based on rules you set — so a 7-hour offset does not turn into a missed opportunity.

For outbound, DialPhone routes US-to-Romania calls with STIR/SHAKEN attestation, so your caller ID carries the same anti-spoofing credential US enterprise callers expect rather than appearing as an unverified international number.

FAQ

Calling Romania FAQ

What is the country code for Romania? +

Romania's country code is +40. From a US landline or mobile, you reach it by dialing the US international exit code 011 first, making the full prefix 011 40. From a smartphone that supports E.164 dialing you can substitute + for 011, so +40 works identically.

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

Yes. Romanian numbers in domestic format start with a 0 — for example, a Bucharest landline is written 021 XXX XXXX locally. That leading 0 is Romania's trunk prefix and is only used for calls placed inside Romania.

When calling from the US, replace the leading 0 with 011 40. So 021 123 4567 becomes 011 40 21 123 4567. Leaving the 0 in is the most common reason a US-to-Romania call fails to connect.

How do I call a Romanian mobile number from the US? +

Romanian mobile numbers start with 07 in domestic format and are 10 digits long. Drop only the single leading 0 and keep the 7 — then dial 011 + 40 + the remaining 9 digits.

Example: a number written as 0722 123 456 is dialed from the US as 011 40 722 123 456. Mobile numbers have no separate area code; the 07 prefix identifies them as mobile across all networks.

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

Romania is 7 hours ahead of US Eastern Time during standard time (UTC+2 vs UTC-5) and 8 hours ahead during US daylight saving. The reliable business-hours overlap is 8 AM–10 AM ET, which lands in the 3–5 PM range in Romania — still within office hours.

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

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

Standard US carrier rates without an international plan run roughly $2–$3 per minute to Romania. 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 Romanian destinations that are typically lower than carrier add-on plans, with no monthly minimum for low-volume callers.

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

Romanian 0800 freephone numbers are free only when dialed from within Romania. Calling them from the US will either fail to connect or connect at a standard international rate. Ask your Romanian contact for their geographic +40 21 (Bucharest) or mobile +40 7 number as a reachable alternative.

What is the difference between EET and EEST for calling Romania? +

EET (Eastern European Time) is UTC+2 and applies from late October to late March — Romania's standard time, 7 hours ahead of US Eastern. EEST (Eastern European Summer Time) is UTC+3 and applies from late March to late October, making Romania 8 hours ahead of US Eastern during that period.

The EU and US change clocks on different Sundays each spring, so for a short window Romania shifts before the US does and the offset temporarily changes by an hour.

How do I save a Romanian number in my phone contacts? +

Save Romanian numbers in full E.164 international format: +40 followed by the number without its leading 0. For example, a Bucharest landline 021 123 4567 should be saved as +40 21 123 4567, and a mobile 0722 123 456 as +40 722 123 456.

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

Start calling Romania today

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

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

Related guides

• How to call Germany from the US — same exit-code pattern, +49
• Number porting guide — bring your existing number to DialPhone
• STIR/SHAKEN explained — why caller ID attestation matters for international calls

Call other countries from the US

Part of the how to call internationally from the US hub — exit code 011, country codes, and the per-country mobile rules.

• How to call the UK from the US
• How to call France from the US
• How to call Germany from the US
• How to call Italy from the US
• How to call Spain from the US