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Calling the Czech Republic from the US
How to Call the Czech Republic from the US?
To call the Czech Republic from the United States, dial the US exit code, the Czech Republic country code, followed by the 9-digit local phone number.
The Czech Republic uses the country code 420 and a 9-digit phone number format for both landline and mobile numbers.
To call the Czech Republic from the US, dial:
Landline Number: 011 + 420 + 9-digit landline number
Mobile Number: 011 + 420 + 9-digit mobile number
Calling Czech Republic Toll-Free Numbers from the US
Calling Czech Republic Toll-Free Numbers from the US
Follow these steps to call a Czech Republic toll-free number from the United States:
Dial the US exit code
Enter 011, the international exit code of the US.
Dial the Czech Republic country code
Enter 420, the country code for the Czech Republic.
Dial the toll-free prefix
Czech toll-free numbers commonly begin with 800.
Dial the remaining digits
Enter the rest of the toll-free number.
Note: Czech toll-free numbers may not always accept calls from outside the country. Even when the call connects, your carrier may still charge international calling fees.
Dialing Codes Involved While Calling the Czech Republic from the US
To make a successful call to the Czech Republic from the US, you need to understand the dialing codes involved in the phone number. These codes include the US exit code, the Czech Republic country code, regional and mobile prefixes and the local subscriber number.
1. US Exit Code
The US exit code is 011. You must dial it first when placing an international call from the United States to any other country. It informs your network that you’re about to make an international call.
2. Czech Republic Country Code
The Czech Republic country code is 420. It comes after the US exit code and before the Czech phone number. This code directs the international call from any country to the Czech Republic.
3. Czech Regional and Mobile Prefixes
Unlike many other countries, Czech numbers do not require a separate area code. The first digits of its 9-digit phone number help identify whether the number is linked to a region, mobile network, toll-free service, or other type of number.
For example, Prague landline numbers usually start with 2, while many mobile numbers start with 6 or 7.
Czech Regional Calling Codes :
Calling Code | Region | Former Code |
| 2 | Prague | 02 |
| 31, 32 | Central Bohemian Region | - |
| 35 | Karlovy Vary Region | 017 |
| 37 | Plzeň Region | 019 |
| 38, 39 | South Bohemian Region | 038 |
| 41, 47 | Ústí nad Labem Region | 047 |
| 46 | Pardubice Region | 040 |
| 48 | Liberec Region | 048 |
| 49 | Hradec Králové Region | 049 |
| 51, 53, 54 | South Moravian Region | 05 |
| 55, 59 | Moravian-Silesian Region | 069 |
| 56 | Vysočina Region | 066 |
| 57 | Zlín Region | 067 |
| 58 | Olomouc Region | 068 |
Czech Mobile Network Prefixes:
Prefix | Network Operator |
| 601, 602, 606, 607, 72, 790 | O2 Czech Republic |
| 603, 604, 605, 73 | T-Mobile Czech Republic |
| 608, 77 | Vodafone Czech Republic |
4. Subscriber Number
Czech subscriber numbers are 9-digit for both landline and mobile. When calling from the US, you must dial the full number after the exit code and country code without adding or removing any extra digits.
Alternative Ways to Call the Czech Republic from the US
Besides dialing through a regular phone carrier, you can also call the Czech Republic using VoIP services, calling cards, Wi-Fi calling, or internet-based apps.
VoIP Services
VoIP services let you make calls over the internet using a virtual phone number. VoIP is known for its lower calling rates, clear call quality, and advanced call management features like call recording, call parking, call transfer, and others, essential for business communication.
VoIP Services
VoIP services let you make calls over the internet using a virtual phone number. VoIP is known for its lower calling rates, clear call quality, and advanced call management features like call recording, call parking, call transfer, and others, essential for business communication.
Calling Cards
International calling cards give you prepaid minutes for calling the Czech Republic. You can use them without internet access. However, calling rates and expiry rules vary by provider, so check the terms before using one.
Social Media Apps
Apps like WhatsApp, Messenger, FaceTime, and Viber let you make voice or video calls over the internet. They are usually best for personal calls. However, both people must use the same app and have a stable internet connection for calls.
Wi-Fi Calling
Wi-Fi calling lets you place calls through a Wi-Fi network instead of a cellular signal. It can be useful when mobile coverage is weak, but availability and international charges depend on your carrier.
What is the Best Time to Call the Czech Republic from the US?
The best time to call the Czech Republic is during the country’s business hours, usually 9:00 AM to 6:00 PM Czech time. For personal calls, late afternoon or early evening in the Czech Republic is often more convenient.
Since the Czech Republic is usually 6 to 9 hours ahead of the US, calling from the US in the late morning or early afternoon often works best. This usually reaches the recipient in the Czech Republic during the evening.
US Time Zone | Best Time to Call from the US | Corresponding Time in the Czech Republic |
| Eastern Time | 3:00 AM – 12:00 PM | 9:00 AM – 6:00 PM |
| Central Time | 2:00 AM – 11:00 AM | 9:00 AM – 6:00 PM |
| Mountain Time | 1:00 AM – 10:00 AM | 9:00 AM – 6:00 PM |
| Pacific Time | 12:00 AM – 9:00 AM | 9:00 AM – 6:00 PM |
How Much Does It Cost to Call the Czech Republic from the US?
The cost to call the Czech Republic from the United States typically ranges from $0.017 to $0.068 per minute, depending on your service provider and the type of number you are calling. Traditional carriers may charge higher international rates, especially for mobile numbers.
If you need to call the Czech Republic from the US frequently, using a VoIP service can be a practical way to reduce calling costs. A VoIP provider like Calilio offers affordable international calling rates, along with clear call quality when connected through a stable internet connection.
Use the pricing tool below to find out the rates for calling the Czech Republic from the USA with Calilio:
Use the pricing tool below to check the current call rates with Calilio:
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These rates are for reference purposes only and don't represent a binding agreement between the customer and Calilio. Price may vary according to number operator.
Frequently asked questions
Do I need to dial an area code when calling the Czech Republic from the US?
No, you do not need to dial a separate area code when calling the Czech Republic from the US. The country uses a closed numbering plan, so the regional or city code is already included in the full 9-digit phone number. Hence, you can just dial the US exit code, the Czech country code and the remaining 9-digit phone number to connect.
Can I call the Czech Republic from the US for free?
Why is my call to the Czech Republic not connecting?
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