Slovakia phone number format and +421 country code
Use the 421 country code, written as +421, when calling Slovakia from another country. This may also be called the country calling code, dial code, phone prefix, or international prefix. Check the number format, confirm whether the destination is mobile or landline, then review the Voipfibre rate before placing the call.
Use Voipfibre after checking the number format
+421 + area or mobile prefix without domestic leading 0 + subscriber number
How to dial Slovakia
Start with +421, add the correct area or mobile prefix, then enter the local number. Use the format shared by the person or business you are calling when available.
Country code
+421
Use the 421 country code before the Slovakia number when calling internationally.
Number format
domestic 0 + area or mobile prefix + subscriber number
Slovakia uses country code +421. Remove the domestic leading 0 from Slovak area and mobile prefixes in international format, so Bratislava 02 becomes +421 2 and mobile 0905 becomes +421 905.
Before calling
Check the Slovakia mobile or landline rate before calling because destination pricing can vary by number type and route.
Check Slovakia ratesFormat the number before checking the rate
These steps work whether you are calling from Czech Republic, United Kingdom, Germany, United States or another country.
- 1
Start with +421
Slovakia uses the 421 country code, written as +421 in plus format. Put it at the beginning of the number when calling internationally.
- 2
Add the area or mobile prefix
Slovakia uses country code +421. Remove the domestic leading 0 from Slovak area and mobile prefixes in international format, so Bratislava 02 becomes +421 2 and mobile 0905 becomes +421 905.
- 3
Complete the local number
Use the remaining local digits in this pattern: domestic 0 + area or mobile prefix + subscriber number.
- 4
Check the rate before calling
Check the Slovakia mobile or landline rate before calling because destination pricing can vary by number type and route.
Mobile and landline examples
Examples are for formatting guidance only. Always confirm the exact number with the person or business you are calling.
Mobile example
+421 905 123 456
Useful when you are calling a Slovakia mobile number.
Landline example
+421 2 1234 5678
Useful when you are calling a Slovakia landline or area-based number.
What to check before using the 421 country code
Country codes are only one part of an international phone number. Exit codes, area codes, mobile prefixes, and local numbering rules can change how the final number should be dialed.
Exit code or plus format
On a mobile phone, the plus sign usually replaces exit codes such as 00 or 011. From a landline, use the international access code for the country you are calling from, then 421.
Country calling code, dial code, or prefix
People may call 421 the Slovakia country code, country calling code, phone code, dial code, or international prefix. In each case, use +421 before the rest of the Slovakia number.
Mobile phone or landline
After +421, the next digits may be an area code, mobile prefix, service prefix, or local number. Check whether you are calling a mobile phone or landline because rates can differ.
Slovakia country code +421
Slovakia country code, Slovakia phone code, Slovakia calling code, Slovakia dialing code, Slovakia telephone code, Slovak Republic country code, Slovak phone code, and 421 country code searches usually refer to +421.
Drop the Slovak trunk 0
Slovak numbers are often written domestically with a leading 0 before the area or mobile prefix. In international format, remove that 0 and use +421 followed by the remaining digits.
Bratislava and area-code intent
Slovakia area code, Slovak area code, Bratislava area code, and Bratislava phone code searches usually need +421 2 for Bratislava. Keep the rest of the local number after the area prefix.
Slovakia mobile prefixes
Slovakia mobile number, Slovak mobile number, and Slovakia mobile code searches should remove the domestic leading 0 from 09xx mobile prefixes. For example, 0905 becomes +421 905 and 0911 becomes +421 911.
Separate Czechia and Austria codes
Slovakia uses +421. Czech Republic and Czechia use +420, while Austria uses +43. Keep 420 and 43 country-code rows separate from Slovakia +421 intent.
Common ways people call Slovakia
Use the country code first, confirm the number type, then check the Voipfibre rate before placing the call.
What country or phone code does Slovakia use?
Slovakia uses country code +421. Dial +421 followed by the Slovak area or mobile prefix without the domestic leading 0, then the subscriber number.
Open Slovakia guideWhat is the Slovakia phone-number format?
Use +421 followed by the area or mobile prefix without the domestic trunk 0. For example, Bratislava 02 becomes +421 2.
Open Slovakia guideWhat is the Bratislava area code?
Bratislava uses 02 domestically. In international format, drop the leading 0 and dial +421 2 followed by the local number.
Open Slovakia guideHow do I format a Slovakia mobile number?
Remove the domestic leading 0 from the 09xx mobile prefix. For example, 0905 becomes +421 905 and 0911 becomes +421 911.
Open Slovakia guideIs 421 the Czech Republic country code?
No. +421 is Slovakia. Czech Republic and Czechia use +420 for standard international phone numbers.
Open Czech Republic guideAfter checking the country code
Continue with rates, app calling, and related dialing guides.
Popular guides for calling Slovakia
Use the +421 format first, then compare free app calling and regular phone-number calling options from common origin countries.