International dialing
How to call Czech Republic from United States
- Exit code 011
- Country code +420
- No trunk prefix to drop
Reviewed by Sujan ThapaliyaLast updated
Calling Czech Republic from United States
Dial 011 (the United States exit code), then 420 (Czech Republic’s country code), then the local number exactly as written. So +420 212 345 678 is dialled as 011 420 212 345 678. From a mobile you can dial +420 directly instead of 011.
The dialing sequence
- Exit code from United States
- 011
- Czech Republic country code
- +420
- Trunk prefix to remove
- None
- Dial the local number exactly as written.
- Full sequence
- 011 + 420 + local number (the national number as-is; there is no trunk prefix to drop)
- Time in Czech Republic
- CET/CEST (UTC+1/+2)
- United States is on ET (UTC−5/−4).
Step by step
Dialing Czech Republic from United States
Four steps, and the third one is where almost every failed call goes wrong.
- 1
Dial 011: the exit code for United States
011 tells the United States network that the call is leaving the country. On a mobile you can press and hold 0 to type a + instead, which works from any country and any SIM; it is the more reliable option when you travel. - 2
Dial 420: the country code for Czech Republic
420 is Czech Republic's country calling code. It never changes and is the same no matter where you are calling from. - 3
Dial the local number exactly as written
Czech Republic has no national trunk prefix, so there is nothing to remove. The number you would dial locally is the number you dial after 420. - 4
Check the local time before you dial
Czech Republic is on CET/CEST (UTC+1/+2) and United States is on ET (UTC−5/−4). Work out the overlap before calling; the most common cause of an unanswered international business call is simply the hour.
Worked examples
What the number looks like at each stage
These are format patterns showing digit grouping, not working numbers.
| Written in Czech Republic | Dialed from United States | |
|---|---|---|
| Landline | 212 345 678 | 011 420 212 345 678 |
| Mobile | +420 [67]XX XXX XXX | 011 420 601 234 567 |
| From a mobile (+) | n/a | +420 601 234 567 |
Frequently asked questions
How do I call the Czech Republic from the United States?
Dial 011, then 420, then the local number. For example, +420 212 345 678 is dialled as 011 420 212 345 678.
What is the country code for Czech Republic?
+420. From United States you reach it by dialling 011 first, or by dialling + directly from a mobile.
How do I call a Czech Republic mobile from United States?
Exactly the same way as a landline: 011 + 420 + the mobile number. A Czech Republic mobile in international format looks like +420 601 234 567.
What is the time difference between United States and Czech Republic?
United States is on ET (UTC−5/−4) and Czech Republic is on CET/CEST (UTC+1/+2). Because several of these zones observe daylight saving on different dates, check the current offset rather than assuming a fixed gap.
Is it cheaper to call Czech Republic over the internet?
Usually, yes. Carrier international rates are typically far above VoIP per-minute rates, and calling from an owned local number also means the person you are calling sees a number they can ring back.
Sources
- ITU-T Recommendation E.164 — The international public telecommunication numbering plan — International Telecommunication UnionThe international number format, the 15-digit maximum, and how country codes and national numbers compose.
- ITU-T International Numbering Resources — International Telecommunication UnionThe assignment of country calling codes and the published national numbering plans they belong to.
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