This page details the format and usage of telephone numbers in Slovakia. Today, Slovakia uses a closed numbering plan with area codes beginning with 0. After 0, there is usually a 2-digit prefix, followed by a 7-digit subscriber number. The capital, Bratislava, has one-digit prefix and an 8-digit subscriber number.
Following the break-up of Czechoslovakia in 1993, the successor states, the Czech Republic and Slovakia, continued to share the 42 country code, until 28 February 1997, when the Czech Republic adopted 420 while Slovakia adopted 421.Czech the News: Newsletter of the Embassy of the Czech Republic, 1995, page 1
Numbering plan
National Destination Code for mobile telephonesAll networks090[1-9], 091x, 094x, 095x
National Destination Codes for geographical numbering areas (from 01.07.2001)Secondary area(4)Primary area(25)National NumberNDC SN(# of digits)BratislavaBratislava28Western SlovakiaDunajská Streda317Trenčín327Trnava337Senica347Nové Zámky357Levice367Nitra377Topoľčany387Central SlovakiaŽilina417Považská Bystrica427Martin437Liptovský Mikuláš447Zvolen457Prievidza467Lučenec477Banská Bystrica487Eastern SlovakiaPrešov517Poprad527Spišská Nová Ves537Bardejov547Košice557Michalovce567Humenné577Rožňava587
Special codes (emergency calls) The following special telephone numbers are valid across the country:
112 - General emergency 150 - Fire brigade 155 - Ambulance 158 - Police 159 - Municipal police
These numbers are toll-free.
References
Slovak phone area codes : http://www.centroconsult.sk/toolbox/phonemap.html