Country code 40 belongs to Romania, connecting callers across the globe to landlines and mobile networks throughout the southeastern European nation. Whether you're trying to reach family in Bucharest, contact a business partner in Cluj-Napoca, or understand how international dialing works for this region, getting the format right matters.
Dialing Romania requires more than just punching in a two-digit prefix. You need the correct exit code for your current country, the country code itself, and an understanding of how Romanian phone numbers are structured between landlines and mobile phones. Let's break down everything you need to know about country code 40, how to dial it correctly from anywhere, and the telecommunications framework of the country behind it.
How to Dial Country Code 40 From Anywhere
Placing an international call to Romania depends entirely on your starting location and the type of phone you're calling. International dialing strings follow a specific sequence: Exit Code + Country Code (40) + Area/Network Code + Subscriber Number.
Calling From North America (US and Canada)
If you're calling from the United States or Canada, your international exit code is 011.
- To reach a landline in Bucharest (area code 21 or 31), you'll dial:
011 - 40 - 21 - XXX - XXXX - To reach a mobile phone (starting with 7), you'll dial:
011 - 40 - 7XX - XXX - XXX
Calling From the United Kingdom and Europe
If you're calling from the UK, your exit code is 00. If you're calling from within the European Union using a mobile phone, you can often use the universal '+' sign instead of dialing an explicit exit code.
- From a UK landline or mobile:
00 - 40 - [Subscriber Number] - Using the mobile "+" shortcut:
+40 - [Subscriber Number]
Structure of Romanian Phone Numbers
Romania uses a closed national numbering plan regulated by the National Authority for Management and Regulation in Communications (ANCOM). Unlike some countries where local numbers vary in length, Romanian numbers maintain a fixed total length to ensure smooth routing.
Landline Number Format
Landline numbers in Romania consist of the country code (+40), a geographic area code (1 to 2 digits), and a local subscriber number. For example, Bucharest uses area codes 21 (Telekom/independent operators) and 31 (alternative operators). Other major cities use three-digit area codes, such as 232 for Iași or 264 for Cluj-Napoca. Combined with the local number, the total length after the country code is always nine digits.
Mobile Number Format
Mobile phone numbers in Romania do not use geographic area codes. Instead, mobile subscriber numbers always begin with the digit 7 and are followed by eight additional digits (making a nine-digit mobile subscriber string after +40). Major mobile networks like Orange, Vodafone, and Digi Mobil operate within these ranges.
- Example format for mobile dialing:
+40 7XX XXX XXX
Common Mistakes When Dialing Country Code 40
Callers frequently encounter connection errors due to a few common formatting mistakes:
- Duplicating the leading zero: When dialing international numbers, you must drop the trunk prefix (the domestic leading zero) used inside the country. For example, if a Romanian local number is written as
021 555 1234, you drop the initial0when adding the country code, resulting in+40 21 555 1234. - Confusing landline area codes with mobile prefixes: Dialing a 7 immediately after +40 routes your call to a mobile network, whereas starting with 2 or 3 routes to a regional landline. Mixing these up results in invalid number tones.
- Incorrect exit codes: Forgetting that North America uses
011while most of Europe uses00leads to immediate call failure on landlines.
Telecom Infrastructure and Connectivity in Romania
Beyond simple telephone routing, country code 40 represents a nation with a surprisingly advanced digital infrastructure. Romania ranks consistently near the top of global broadband speed indices, driven by early investments in fiber-optic networks.
Mobile penetration is exceptionally high, with 4G and 5G coverage blanketing urban centers and major transit corridors. For travelers visiting Romania, purchasing a local prepaid SIM card or activating an eSIM tied to local networks provides seamless high-speed data access without roaming fees. Because major providers like Vodafone Romania and Orange Romania operate on standard European frequency bands, unlocked phones from North America and Europe work smoothly across the country.
Frequently Asked Questions
Is country code 40 used for text messaging as well?
Yes. Standard SMS and MMS messages sent to Romanian mobile numbers use the exact same international format (+40 7XX XXX XXX) as voice calls. Standard international messaging rates from your domestic carrier will apply unless you have an international bundle.
How can I check if a Romanian phone number is valid before calling?
You can verify the format by counting the digits. After removing the country code (+40) and any domestic leading zeros, a valid Romanian subscriber number must contain exactly nine digits—beginning with 7 for mobile lines or a geographic prefix (like 21 or 264) for landlines.
What should I do if my call to country code 40 fails?
First, verify that you dropped the leading zero from the local number. Second, check with your domestic telecom provider to ensure your plan permits international outbound calling. Some budget or corporate mobile plans block international dialing by default.
Are toll-free numbers accessible from outside Romania?
No. Romanian toll-free numbers (typically starting with prefix 0800) are restricted to domestic callers within Romania and cannot be reached by dialing international country code 40 from abroad.
