International dialing guide
Slovakia country code (+421)
The international country code for Slovakia is +421. Use this prefix after your exit code when calling Slovakia from another country, or dial the full E.164 number (+421…) with Ringvoo from your browser.
What is the Slovakia country code?
Country code +421 identifies phone numbers registered in Slovakia. When you call from abroad, you dial your international access code (00 in most countries, 011 from the US/Canada), then 421, then the local number. With Ringvoo, paste the full number including +421 and we handle the routing.
How to dial Slovakia from abroad
- Dial your international exit code (00 in most countries, 011 from the US/Canada).
- Enter Slovakia's country code 421.
- Add the local phone number, dropping any leading trunk zero if your carrier requires it.
- Or open Ringvoo, paste the full E.164 number (+421…), and call from your browser.
Example numbers for Slovakia
Frequently asked questions
What is the country code for Slovakia?
The international dialing code for Slovakia is +421. Include it after your exit code when calling from abroad.
How do I call Slovakia from the United States?
Dial 011 (US exit code), then 421, then the local number. Or use Ringvoo and enter the full +421 number in your browser.
Can I call Slovakia without downloading an app?
Yes. Ringvoo runs in Chrome, Safari, or Edge and connects to real phone numbers in Slovakia — no app install required.
Do I need to drop the leading zero when dialing Slovakia?
When using the international format (+421), omit any leading 0 from the local number. Ringvoo accepts E.164 numbers directly.