00 - Bulgaria exit code to dial first when calling international
421 - Slovak country code must be dialed next
00 +
421 +
Local Number - Overall dialing code format
World Times:
The time in Bulgaria is now 19:08:07 PM(07:08:07 PM)
The time in Slovakia is now 18:08:07 PM(06:08:07 PM)
How to call Slovakia from Bulgaria:
World Times:
Mobile Codes: