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Formula
From the UK: 00 (or +) → 39 → Italian number as written (keep the landline 0; mobiles start with 3).
| Type | Domestic in Italy | Save as (portable) | Dial from UK |
|---|---|---|---|
| Landline (Rome) | 06 XXXXXXXX | +39 06 XXXXXXXX | 00 39 06 XXXXXXXX |
| Mobile | 3XX XXXXXXX | +39 3XX XXXXXXX | 00 39 3XX XXXXXXX |
X characters are placeholders, not a private callable number. Save +39 in contacts; use 00 only for all-digit UK access. Italy is the exception to the drop-the-zero habit UK callers know from +44.
Dial it step by step
- 1
Exit the UK network. On a mobile or modern contact book, start with +. On a UK landline, PBX, or digit-only service, dial 00.
- 2
Add the Italy country calling code: 39.
- 3
Add the national significant number (NSN). Dial the Italian number as written. Keep the leading 0 on landlines (06 stays 06 after +39). Mobiles start with 3; do not add a 0.
Portable contact format: + 39 + NSN (landline NSN includes the leading 0)
Digits-only call from UK: 00 + 39 + NSN
Mobile and landline rules
- Geographic landline: Rome 06… becomes +39 06…. The 0 stays.
- Mobile: 3XX… becomes +39 3XX…. No 0 is added or removed.
- Why: Italy has no domestic trunk prefix. The 0 at the start of a landline number is part of the area code itself.
See the Italy calling-code reference and the international dialing format guide.
Worked examples
Domestic → portable international → digits-only from United Kingdom. All subscriber digits shown as X are placeholders.
| Type | Domestic in Italy | Save as (portable) | Dial from UK |
|---|---|---|---|
| Rome landline | 06 XXXXXXXX | +39 06 XXXXXXXX | 00 39 06 XXXXXXXX |
| Milan landline | 02 XXXXXXXX | +39 02 XXXXXXXX | 00 39 02 XXXXXXXX |
| Naples landline | 081 XXXXXXX | +39 081 XXXXXXX | 00 39 081 XXXXXXX |
| Florence landline | 055 XXXXXXX | +39 055 XXXXXXX | 00 39 055 XXXXXXX |
| Italy mobile | 3XX XXXXXXX | +39 3XX XXXXXXX | 00 39 3XX XXXXXXX |
Common mistakes on this route
- Removing the 0 from an Italian landline out of UK habit. Wrong: +39 6… for Rome. Correct: +39 06… / 00 39 06….
- Adding a 0 in front of a mobile. Mobiles stay +39 3XX…, not +39 03XX….
- Saving 00 in the contact. Store +39 + NSN so the number works from any country. See common formatting errors.
Quick Italy area codes (from the UK)
| City / area | Domestic and after +39 | Notes |
|---|---|---|
| Rome | 06 | Keep 0 |
| Milan | 02 | Keep 0 |
| Naples | 081 | Keep 0 |
| Florence | 055 | Keep 0 |
| Turin | 011 | Keep 0 |
| Bologna | 051 | Keep 0 |
| Venice | 041 | Keep 0 |
| Palermo | 091 | Keep 0 |
Italian landline codes include the leading 0 after +39 / 00 39. Starter set only, not a full inventory. Full rules and mobile ranges: Italy (+39).
Time difference (practical)
Italy uses CET (UTC+1) in winter and CEST (UTC+2) in summer, so it is one hour ahead of the UK all year. Both switch clocks on the last Sunday of March and the last Sunday of October at the same moment (01:00 UTC), so the gap does not change. Example: 09:00 London = 10:00 Rome.
How the international format is built
Under ITU-T E.164, the international number is the country code plus national significant number, with a maximum of 15 digits. The + symbol and spacing are access/display notation rather than E.164 digits.
Portable
+ 39 + NSN (landline NSN includes the leading 0)
Digits-only from UK
00 + 39 + NSN
Related routes and references
FAQ
What is the Italy country code from the UK?
39. Dial 00 or +, then 39, then the Italian number, keeping the leading 0 on landlines.
Do I dial 00 or +?
Use + on a mobile or saved contact when supported. Use 00 on a UK landline or digit-only path. After that, the destination is the same: 39 + NSN.
Do I drop the zero for Italy?
No, not for landlines. After +39, keep the 0 (06 → +39 06…). Mobiles start with 3 and have no 0 to add or drop.
Why is Italy different from the UK?
UK numbers drop their domestic trunk 0 after +44. Italy has no trunk prefix: the 0 is part of the landline area code, so it stays after +39.
How do I dial an Italian mobile from the UK?
Dial 00 39 3XX XXXXXXX or save +39 3XX XXXXXXX. Do not add a 0.
Standards and numbering-plan sources
- ITU-T E.164: The international public telecommunication numbering planInternational Telecommunication Union. Verified 2026-07-19.
- ITU-T E.123: Notation for national and international telephone numbersInternational Telecommunication Union. Verified 2026-07-19.
- The National Telephone Numbering PlanOfcom. Verified 2026-07-19.
- National numbering plan: United KingdomInternational Telecommunication Union. Verified 2026-07-19.
- Piano di numerazioneAGCOM. Verified 2026-07-19.
- National numbering plan: ItalyInternational Telecommunication Union. Verified 2026-07-19.
See our editorial and sourcing methodology.