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 00:42:13 AM(12:42:13 AM)
The time in Slovakia is now 23:42:13 PM(11:42:13 PM)
How to call Slovakia from Bulgaria:
World Times:
Mobile Codes: