+420 is the country code for the Czechia.
Every phone number in the Czechia starts with +420 when you call it from another country. From the US, dial 011 420, then the full number.
- Time there
- Prague timeCentral European Time, UTC+1 to UTC+2
- From the US or Canada
- 011 420 601 123 456
- From the UK and most of Europe
- 00 420 601 123 456
- From Australia
- 0011 420 601 123 456
- From any mobile phone
- +420 601 123 456
- Inside the Czechia
- 601 123 456
- Mobile numbers
- 9 digits after +420, starting 60, 70, 71, 72, 73, 77 or 79
- Landlines
- 9 digits after +420, such as +420 2XX XXX XXX in Prague
- Toll-free numbers
- Start with 800
Check a +420 number to see whether it is a mobile, a landline or VoIP.
Pick the country, enter the number without the +420, and the free check shows whether it is valid and whether it is a mobile, a landline or VoIP.
Mobile numbers in the Czechia start with 60, 70, 71, 72, 73, 77 or 79, and this table shows which networks first issued each start.
| At home | From abroad | First issued by |
|---|---|---|
| 60 | +420 60 | O2, T-Mobile, Vodafone |
| 70 | +420 70 | T-Mobile, SAZKA sazkova kancelar, a.s, CEZ Group |
| 71 | +420 71 | O2 |
| 72 | +420 72 | O2 |
| 73 | +420 73 | T-Mobile, Vodafone, SMART Comp |
| 77 | +420 77 | Vodafone, TT Quality s.r.o., T-Mobile |
| 79 | +420 79 | T-Mobile, O2, Tesco Mobile CR |
People keep their number when they switch networks, so the start shows where a number began. Our free number portability lookup shows the network it is on today.
14 landline areas cover the Czechia, from 2 in Prague to 58 in Olomouc Region.
| At home | From abroad | Area |
|---|---|---|
| 2 | +420 2 | Prague |
| 31, 32 | +420 31, +420 32 | Central Bohemian Region |
| 35 | +420 35 | Karlovy Vary Region |
| 37 | +420 37 | Plzeň Region |
| 38, 39 | +420 38, +420 39 | South Bohemian Region |
| 41, 47 | +420 41, +420 47 | Ústí nad Labem Region |
| 46 | +420 46 | Pardubice Region |
| 48 | +420 48 | Liberec Region |
| 49 | +420 49 | Hradec Králové Region |
| 51, 53, 54 | +420 51, +420 53, +420 54 | South Moravian Region |
| 55, 59 | +420 55, +420 59 | Moravian-Silesian Region |
| 56 | +420 56 | Vysočina Region |
| 57 | +420 57 | Zlín Region |
| 58 | +420 58 | Olomouc Region |
In the Czechia, the phone number format for apps and SMS gateways is +420 followed by the full number.
| Written | Example | Where you see it |
|---|---|---|
| At home | 601 123 456 | Business cards, local ads |
| International | +420 601 123 456 | Websites, email signatures |
| E.164 | +420601123456 | APIs, SMS gateways, CRMs |
A missed call from a +420 number you don't know can be a one-ring scam, so check it before calling back.
One-ring scams call once and hang up, hoping you call back a line that bills you international or premium rates.
- Don't call back an international number you don't know. A real caller leaves a message or sends a text.
- Check the number in the box above. A number that is not a working mobile or landline in the Czechia is a warning sign.
- Hang up on anyone who wants gift cards, crypto or a wire transfer, or asks you to read out a code that was just texted to you.
- Report it at reportfraud.ftc.gov, and see the FCC's guide to one-ring scams.
The codes next to +420 belong to other countries, so one wrong digit reaches a different place.
These are the questions people ask most about +420.
Which country uses the +420 country code?
Czechia. Every phone number there starts with +420 when it is dialed from abroad.
How do I call the Czechia from the US?
Dial 011, then 420, then the full number. A mobile number written 601 123 456 at home is dialed 011 420 601 123 456 from the US, or +420 601 123 456 from any mobile phone.
Is +420 the same as 00420?
Yes. 00 is the exit code used in the Czechia and most of the world, and the + on a mobile phone stands in for whatever exit code your network uses. From the US and Canada the exit code is 011 instead.
How many digits is a phone number in the Czechia?
A mobile number has 9 digits after +420, written 601 123 456 at home. A landline has 9 digits, written 2XX XXX XXX at home.
What time is it in the Czechia?
The Czechia is on Central European Time, UTC+1 in winter and UTC+2 in summer.
How do I check a +420 number that called me?
Enter it in the box above. The free check shows whether it is a valid number from the Czechia and whether it is a mobile, a landline or a VoIP line, which helps you spot a one-ring scam before you call back.
Sources: Google's libphonenumber numbering data for lengths, mobile starts, area code places, first-issuing networks and time zones, as of September 24, 2026; the ITU list of country codes.