+421
Slovakia phone numbers
0912 123 456
International +421 912 123 456, E.164 +421912123456
The numbering plan of Slovakia: formats, lengths, the regular expression for each line type and the prefix blocks allocated to each carrier, as ITU publishes it. A pattern says what a number looks like and where it was allocated; whether it is in service, and who serves it today, is a different question (below).
At a glance
- Country code
- +421
- Exit code
- 00
- Trunk prefix
- 0
- Mobile digits
- 9
- Fixed-line digits
- 6 or 7 or 9
- Number portability
- yes
- Carriers on record
- 8
How to dial a number in Slovakia from anywhere: the dialling helper.
| T-Mobile (Slovak Telekom) | 17 |
|---|---|
| Orange | 10 |
| Telefonica O2 | 5 |
| 4ka of SWAN | 3 |
| Alternet, s.r.o. | 1 |
| 3 other operators | 3 |
prefix blocks allocated, from the published records; a block is a prefix at the plan's allocation length
Check a number
Valid mobile number in Slovakia.
| Country | Slovakia numbering plan |
|---|---|
| Line type | Mobile |
| Carrier the block was allocated to | T-Mobile (Slovak Telekom) |
| E.164 | +421912123456 |
| International | +421 912 123 456 |
| National | 0912 123 456 |
| RFC 3966 | tel:+421-912-123-456 |
Test a pattern
Tick the line types you accept, copy the combined pattern, and paste numbers to see which range each one falls in. Numbers are reduced to their national digits first (no spaces, no +421, no trunk prefix 0); nothing leaves your browser.
^(?:909[1-9]\d{5}|9(?:0[1-8]|1[0-24-9]|4[03-57-9]|5\d)\d{6}|(?:2(?:16|[2-9]\d{3})|(?:(?:[3-5][1-8]\d|819)\d|601[1-5])\d)\d{4}|(?:2|[3-5][1-8])1[67]\d{3}|[3-5][1-8]16\d\d)$| Number | National digits | Matches |
|---|---|---|
| 0912 123 456 | 912123456 | Mobile |
| 02 212 345 67 | 221234567 | Fixed line |
| 0800 123 456 | 800123456 | not in the ticked types |
| 0690 123 456 | 690123456 | not in the ticked types |
Need another country, or the pattern as code in your language? Open the regex builder.
Walk the prefixes
Type the first digits of a number in national form, or tap them: the operators holding blocks under those digits, then the block a full prefix falls in. 39 blocks held by 8 operators are on record.
Type the first digits of a number in national form.
In full
Cheat sheet
| Country code | +421 |
|---|---|
| International exit code (dialling out) | 00 |
| Trunk prefix (national dialling) | 0 |
| Mobile number length (national digits) | 9 |
| Fixed-line number length (national digits) | 6 or 7 or 9 |
| E.164 example | +421912123456 |
| RFC 3966 (tel: URI) | tel:+421-912-123-456 |
| Mobile number portability | Yes |
Line types and their regular expressions
Match each pattern against the national significant number: digits only, without the trunk prefix 0 and without +421. The patterns follow the national numbering plan and are anchored here.
| Line type | National digits | Example, national | Example, E.164 |
|---|---|---|---|
| Mobile | 9 | 0912 123 456 | +421912123456 |
| Fixed line | 6 or 7 or 9 | 02 212 345 67 | +421221234567 |
| Toll-free | 9 | 0800 123 456 | +421800123456 |
| VoIP | 9 | 0690 123 456 | +421690123456 |
| Shared cost | 9 | 0850 123 456 | +421850123456 |
| Premium-rate | 9 | 0900 123 456 | +421900123456 |
| Pager | 7 | 09090 123 | +4219090123 |
| UAN | 9 | 0961 234 567 | +421961234567 |
Mobile, 9 digits
^(?:909[1-9]\d{5}|9(?:0[1-8]|1[0-24-9]|4[03-57-9]|5\d)\d{6})$Fixed line, 6 or 7 or 9 digits
^(?:(?:2(?:16|[2-9]\d{3})|(?:(?:[3-5][1-8]\d|819)\d|601[1-5])\d)\d{4}|(?:2|[3-5][1-8])1[67]\d{3}|[3-5][1-8]16\d\d)$Toll-free, 9 digits
^(?:800\d{6})$VoIP, 9 digits
^(?:6(?:02|5[0-4]|9[0-6])\d{6})$Pager, 7 digits
^(?:9090\d{3})$UAN, 9 digits
^(?:96\d{7})$Carrier prefix blocks
The operator each prefix block was allocated to, in national form, from the published allocation records for +421. Numbers are portable, so this is the original allocation, not necessarily the carrier serving a number today.
| Operator | Line type | Prefix blocks | Ranges |
|---|---|---|---|
| T-Mobile (Slovak Telekom) | Mobile | 17 | 0901–0904, 0910–0912, 0914, 09091–09099 |
| Orange | Mobile | 10 | 0905–0908, 0915–0919, 0945 |
| Telefonica O2 | Mobile | 5 | 0940, 0944, 0947–0949 |
| 4ka of SWAN | Mobile | 3 | 0950–0952 |
| Alternet, s.r.o. | Mobile | 1 | 094312 |
| BSG Estonia | Mobile | 1 | 09430 |
| IPfon, s.r.o. | Mobile | 1 | 094333 |
| Slovak Republic Railways (GSM-R) | Mobile | 1 | 09598 |
Questions developers ask
- How many digits does a phone number in Slovakia have?
- Mobile numbers have 9 national digits. Fixed line numbers have 6 or 7 or 9 national digits. That is the national number, without the country code +421 and without the trunk prefix 0.
- What is the country code for Slovakia?
- +421. From abroad, dial your own exit code, then 421, then the national number without its trunk prefix 0. From inside Slovakia, the exit code for international calls is 00.
- Which prefixes are mobile numbers in Slovakia?
- Mobile numbers start with 090, 091, 094 or 095 in national form; the mobile regular expression on this page gives the exact ranges (example: 0912 123 456). The carrier table shows which prefix blocks were allocated to which operator.
- Can a mobile number in Slovakia be ported to another carrier?
- Yes. Slovakia has mobile number portability, so a prefix tells you the carrier a number was originally allocated to, not necessarily the one serving it today. Only a live carrier lookup (an HLR or MNP query) answers that.