Slovakia Phone Number Format
Country code +421 · ISO SK
How to format, dial, and validate Slovakia phone numbers, with live examples.
Country Code
+421
National Prefix
0
International Prefix
00
Mobile Portability
Yes
Try it now
Pre-filled with a valid fixed line number for Slovakia. Edit it and click "Try It" to see the parsed result.
Number Types & Example Formats
Each Slovakia phone-number type supported by libphonenumber, with a real example formatted three ways.
| Type | Length | National | International | E.164 |
|---|---|---|---|---|
| Fixed Line | 6, 7, or 9 digits | 02/212 345 67 | +421 2/212 345 67 | +421221234567 |
| Mobile | 9 digits | 0912 123 456 | +421 912 123 456 | +421912123456 |
| Pager | 7 digits | 09090 123 | +421 9090123 | +4219090123 |
| Premium Rate | 9 digits | 0900 123 456 | +421 900 123 456 | +421900123456 |
| Shared Cost | 9 digits | 0850 123 456 | +421 850 123 456 | +421850123456 |
| Toll Free | 9 digits | 0800 123 456 | +421 800 123 456 | +421800123456 |
| UAN | 9 digits | 0961 234 567 | +421 961 234 567 | +421961234567 |
| VoIP | 9 digits | 0690 123 456 | +421 690 123 456 | +421690123456 |
How to Dial Slovakia Numbers
From abroad
Dial +421 followed by the national number, dropping any leading 0.
Within Slovakia
Dial 0 before the local number to make a domestic call.
Dialing out of Slovakia
Dial 00 followed by the destination country code and number.
Area Codes
Browse Slovakia area codes with cities, timezones, and example numbers for each.
Validate a Slovakia Number with the API
Send the number to the free libphonenumber API to get the parsed country, type, formatting, and validity.
curl https://libphonenumberapi.com/api/phone-numbers/+421221234567Frequently Asked Questions
What is the country code for Slovakia?
└ The international country code for Slovakia is +421. Use this prefix when dialing Slovakia numbers from another country.
How long is a Slovakia phone number?
└ Slovakia phone numbers are typically 6, 7, or 9 digits, not including the +421 country code.
How do I dial a Slovakia phone number from abroad?
└ From abroad, dial +421 followed by the national number, dropping any leading 0. Within Slovakia, dial 0 before the local number.
How do I validate a Slovakia phone number programmatically?
└ Send a GET request to https://libphonenumberapi.com/api/phone-numbers/<number>. The free libphonenumber API returns the parsed country, format, type, and validity for any number — no API key required.