Czech Republic (Czechia) Country Code +420
The international country calling code for the Czech Republic (Czechia) is +420. You will see this prefix on numbers for factories and suppliers in the automotive corridor, IT and engineering companies in Prague and Brno, logistics providers, public offices, universities and personal mobiles throughout the country.
Czechia uses a closed 9-digit numbering plan. There is no national trunk prefix “0”: the same 9 digits are dialled inside the country and from abroad (with +420 in front for international calls). A typical landline might be written as +420 221 123 456 (Prague), while a mobile often looks like +420 602 123 456 or +420 777 123 456.
This page walks you through how Czech phone numbers are structured, how to dial +420 from key markets, how the Europe/Prague time zone works (CET/CEST) and what to keep in mind when calling suppliers, shared service centres, export partners and travellers in Czechia.
Example landline (Prague)
+420 221 123 456
Same 9 digits used locally: 221 123 456 (no leading trunk 0).
Example mobile
+420 602 123 456
Mobiles typically start with 6xx or 7xx prefixes.
Time & region
CET/CEST · UTC+1 / UTC+2
Same time zone as Germany and Austria. IANA zone: Europe/Prague.
Overview – where +420 is used
The code +420 belongs to the Czech Republic (Czechia). You will encounter +420 numbers when dealing with automotive and machinery suppliers, shared service centres and IT companies in Prague and Brno, logistics hubs and warehouses across Moravia, universities, public administration and Czech consumers.
As a member of the European Union and Schengen Area, Czechia is deeply integrated into European supply chains. Many foreign partners interact on a daily basis with +420 numbers for order confirmations, transport coordination, support tickets and B2B sales. Having a clean and consistent way of storing Czech contacts helps avoid confusion when teams sit in multiple time zones and countries.
You may see local printed formats such as 221 123 456, 602 123 456 or international forms like +420 221 123 456 and 00420 221 123 456. For address books and CRMs, it is best to standardise everything internally to +420 plus 9 digits, and then choose a consistent grouping only for display.
Typical +420 use cases in business & travel
- Manufacturing & automotive – tier-1 and tier-2 suppliers, industrial plants and logistics centres.
- IT, SSC & BPO – shared service centres, software companies and outsourcing providers in Prague, Brno and Ostrava.
- Tourism & events – hotels, conference venues, tour operators and transport services across Czech cities and spa towns.
When you receive a Czech number on a business card or in an email signature, check whether it already includes +420. If not, assume the printed form is the 9-digit national number and add +420 in your own systems.
Czech phone number formats (+420)
Pattern: +420 ABC XXX XXX (9 digits total)Czechia uses a closed 9-digit plan. The first few digits indicate whether the number is a geographic landline (area-based) or a mobile / non-geographic service. There is no trunk “0”, so you dial the same 9 digits inside the country as appear after +420 in international format.
- • Country code: +420.
- • Landlines: usually start with digits such as 2, 3, 4 or 5, with the combination of first digits identifying regions and cities (e.g. Prague vs. Brno vs. Ostrava).
- • Mobiles: commonly start with 6xx or 7xx prefixes, allocated to different mobile operators and services.
- • Length: national numbers always contain 9 digits (e.g. 221 123 456 or 777 123 456).
- • International form: +420 ABC XXX XXX, where ABC is the leading block (geographic or mobile).
For data cleaning, you can remove spaces, dashes and any leading 00420 / 011420,
then add +420 and re-group digits as ABC XXX XXX when
displaying them.
Sample Czech numbers
Illustrative onlyRepresentative example of a corporate landline in the capital city, used in contracts and company websites.
Landline example used for production plants, warehouses and logistics centres in other regions.
Many sales reps and key account managers prefer to use mobiles with 7xx prefixes, often linked to messaging apps.
How to dial Czech Republic (+420)
1. From the USA or Canada
To call a Czech number from the US or Canada, use:
- Dial 011 – international access code.
- Dial 420 – Czech country code.
- Dial the 9-digit Czech number (e.g. 221 123 456 or 777 123 456).
Example (US → Prague office 221 123 456): 011 420 221 123 456.
2. From the UK, EU or most other countries
In many countries the international prefix is 00:
- Dial 00 – international prefix.
- Dial 420 – country code for Czechia.
- Dial the 9-digit Czech number.
Example (Germany → Czech mobile 602 123 456): 00 420 602 123 456.
3. Dialing inside Czechia & calling out
- Within Czechia: dial the full 9-digit number directly, for both landlines and mobiles (for example 221 123 456 or 777 123 456).
- From Czechia to other countries: dial 00 + destination country code + national number (e.g. 00 44 20… for London, 00 1… for the US).
- Short codes: there are short numbers for operator services and information; these are separate from normal +420 numbers and work only within the national network.
Do not add or remove any “0” when you switch between local and international formats; Czech numbers always have 9 digits after +420.
Normalisation tip: if users enter 00420 777 123 456,
420777123456 or simply 777 123 456, you can normalise all of these to
+420777123456 internally and present them as +420 777 123 456.
Time in Czechia – Europe/Prague (CET / CEST)
The Czech Republic follows Central European Time (CET), which is UTC+1, and Central European Summer Time (CEST), which is UTC+2 during the daylight saving period. The IANA zone identifier is Europe/Prague.
In practice, Czech time usually matches countries like Germany, Austria and Poland. When clocks change in spring and autumn, the offset relative to the UK and North America shifts by one hour, so it is good practice to check a world clock when planning cross-continental meetings or customer-support coverage.
Standard office hours are roughly 09:00–17:00 or 18:00 local time. Many factories run shift patterns, and IT / support teams may operate extended hours, particularly when serving global clients.
Prague compared with other cities
| City / region | Time zone | Typical offset vs Prague |
|---|---|---|
| Prague | Europe/Prague (CET/CEST) | Reference |
| London | Europe/London | ≈ −1 hour (most of the year) |
| Berlin | Europe/Berlin | ≈ same time |
| Dubai | Asia/Dubai | ≈ +2 to +3 hours (seasonal) |
| New York | America/New_York | ≈ −6 to −7 hours (seasonal) |
| Shanghai | Asia/Shanghai | ≈ +7 hours (winter), +6 hours (summer) |
For software, assign Czech user profiles to Europe/Prague so DST changes are handled automatically and meeting links show the correct local time.
Safety & emergency calls in Czechia
As an EU member, the Czech Republic uses the standard 112 emergency number. Dialling 112 from any Czech landline or mobile connects you to an operator who can dispatch police, fire and ambulance services.
In addition to 112, there are traditional national short codes (for example dedicated numbers for fire, ambulance and police). For most visitors and international staff, however, 112 is the key number to remember and is usually sufficient in an emergency.
General emergency
112
Call 112 from any phone for urgent situations requiring police, fire or medical help anywhere in the Czech Republic.
Police
via 112
In emergencies, use 112 and the dispatcher will connect you to police. Companies and local residents may also keep the direct non-emergency lines of local police stations.
Ambulance & medical
via 112
For urgent medical situations, 112 is the recommended entry point. Hospitals and clinics also have normal +420 numbers for appointments and information.
Practical tip
Save key +420 contacts
In addition to 112, save numbers for your accommodation, local coordinator, employer, insurance emergency line and your embassy/consulate, all stored in correct +420 format.
Czech operators typically speak Czech, and in bigger cities and tourist regions you can often get support in English or another major European language.
Examples: calling +420 numbers
UK (London) → Prague office
Prague landline: 221 123 456.
- Dial 00 – international prefix from the UK.
- Dial 420 – Czech country code.
- Dial 221 123 456 – full 9-digit number.
Result: 00 420 221 123 456
Germany (Berlin) → Czech mobile
Mobile: 602 123 456.
- Dial 00 – international prefix from Germany.
- Dial 420 – Czech country code.
- Dial 602 123 456 – mobile number.
Result: 00 420 602 123 456
Inside Czechia – calling a factory in Brno
Brno landline: 543 210 987.
- From any Czech phone, dial 543 210 987 directly (9 digits).
- From abroad, dial your international prefix, then 420, then 543 210 987.
Save this as +420 543 210 987 so the number remains valid regardless of where you are or which SIM card you use.
Czech Republic (Czechia) country code +420 – FAQ
What is the country code for the Czech Republic (Czechia)?
The international country calling code for the Czech Republic (Czechia) is +420. When dialling from abroad, you usually call your international prefix (00 or 011), then 420, then the 9-digit Czech number.
Does Czechia use a trunk prefix “0” for national calls?
No. Czech phone numbers are based on a closed 9-digit plan without a trunk 0. The same 9 digits are dialled locally and from abroad (with +420 in front).
How long are Czech phone numbers?
All standard Czech landline and mobile numbers have 9 digits in the national format, usually grouped as ABC XXX XXX. In full international form they are written as +420 ABC XXX XXX.
What time zone is Czechia in?
Czechia uses Central European Time (CET), which is UTC+1, and Central European Summer Time (CEST), which is UTC+2 when daylight saving time is in effect. The technical time zone name is Europe/Prague.
How should I store Czech numbers in my CRM or app?
For reliability, store every Czech contact in E.164 format: +420 followed by the 9-digit national number, with no spaces or leading 00/011. For example, +420221123456 or +420777123456.
Can I use my EU SIM card in Czechia without high roaming fees?
Since the Czech Republic is in the European Union, many EU/EEA mobile operators apply “roam like at home” rules, meaning calls and data in Czechia are treated similarly to domestic usage within your allowance. However, each operator sets its own fair-use limits, so check your contract before relying heavily on roaming for calls to +420 numbers.
Download the Czech Republic (+420) dialing & time zone cheat sheet
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