Country-to-country dialing walkthroughs
These examples use X placeholders or reserved fictional-use patterns, not private subscriber numbers. The + version is the portable format to save in contacts; the digits-only version shows how the same destination can look when the origin network requires an international prefix.
How to call United Kingdom from United States
Origin access: 011
- 1Start with country code +44 for United Kingdom.
- 2Remove the national prefix 0 before adding +44. The 0 is not part of the national significant number in international format.
- 3Use + on a mobile, or replace + with 011 when the origin network requires digits.
Destination mobile
- Domestic
- 07700 900XXX
- Mobile / saved contact
- +44 7700 900XXX
- From United States
- 011 44 7700 900XXX
Destination landline
- Domestic
- 020 7946 XXXX
- Mobile / saved contact
- +44 20 7946 XXXX
- From United States
- 011 44 20 7946 XXXX
Use +44 from a mobile or saved contact. On a US line that requires an all-digit international access code, replace + with 011.
Open full walkthroughHow to call United States from United Kingdom
Origin access: 00
- 1Start with country code +1 for United States.
- 2There is no separate domestic trunk digit to remove. The digit 1 may be used before the ten-digit number for long-distance dialling, but it is also the shared country code in international notation.
- 3Use + on a mobile, or replace + with 00 when the origin network requires digits.
Destination mobile
- Domestic
- (202) 555-01XX
- Mobile / saved contact
- +1 202 555 01XX
- From United Kingdom
- 00 1 202 555 01XX
Destination landline
- Domestic
- (212) 555-01XX
- Mobile / saved contact
- +1 212 555 01XX
- From United Kingdom
- 00 1 212 555 01XX
Use +1 from a mobile or saved contact. A UK line that requires digits uses 00 before the shared +1 country code and the full ten-digit NANP number.
Open full walkthroughHow to call Italy from Germany
Origin access: 00
- 1Start with country code +39 for Italy.
- 2Retain the leading 0 on geographic numbers after +39. It is part of the Italian national significant number, not a removable trunk prefix.
- 3Use + on a mobile, or replace + with 00 when the origin network requires digits.
Destination mobile
- Domestic
- 3XX XXX XXXX
- Mobile / saved contact
- +39 3XX XXX XXXX
- From Germany
- 00 39 3XX XXX XXXX
Destination landline
- Domestic
- 06 XXXXXXXX
- Mobile / saved contact
- +39 06 XXXXXXXX
- From Germany
- 00 39 06 XXXXXXXX
The German origin prefix is 00, but the Italian destination rule still applies: retain the leading 0 on an Italian geographic number after +39.
Open full walkthroughHow to call Singapore from Australia
Origin access: 0011
- 1Start with country code +65 for Singapore.
- 2There is no domestic trunk prefix to remove from ordinary eight-digit numbers.
- 3Use + on a mobile, or replace + with 0011 when the origin network requires digits.
Destination mobile
- Domestic
- 8XXX XXXX
- Mobile / saved contact
- +65 8XXX XXXX
- From Australia
- 0011 65 8XXX XXXX
Destination landline
- Domestic
- 6XXX XXXX
- Mobile / saved contact
- +65 6XXX XXXX
- From Australia
- 0011 65 6XXX XXXX
Singapore ordinary mobile and fixed-line numbers have eight digits and no trunk 0. Australia commonly uses 0011 when + is not available.
Open full walkthroughHow to call Japan from Singapore
Origin access: 001; alternatives: 002, 008, 013, 018, 019
- 1Start with country code +81 for Japan.
- 2Remove the first domestic 0 before adding +81.
- 3Use + on a mobile, or replace + with 001 when the origin network requires digits.
Destination mobile
- Domestic
- 090 XXXX XXXX
- Mobile / saved contact
- +81 90 XXXX XXXX
- From Singapore
- 001 81 90 XXXX XXXX
Destination landline
- Domestic
- 03 XXXX XXXX
- Mobile / saved contact
- +81 3 XXXX XXXX
- From Singapore
- 001 81 3 XXXX XXXX
Singapore networks offer several international access prefixes. Whichever access service is used, remove the Japanese domestic 0 before country code 81.
Open full walkthroughHow to call United States from Brazil
Origin access: 00 CC; alternatives: 0014, 0021, 0031
- 1Start with country code +1 for United States.
- 2There is no separate domestic trunk digit to remove. The digit 1 may be used before the ten-digit number for long-distance dialling, but it is also the shared country code in international notation.
- 3Use + on a mobile, or replace + with 00 CC when the origin network requires digits.
Destination mobile
- Domestic
- (202) 555-01XX
- Mobile / saved contact
- +1 202 555 01XX
- From Brazil
- 00 CC 1 202 555 01XX
Destination landline
- Domestic
- (212) 555-01XX
- Mobile / saved contact
- +1 212 555 01XX
- From Brazil
- 00 CC 1 212 555 01XX
CC represents the selected two-digit Brazilian carrier code. The carrier code belongs to this call's access string, not to the stored +1 destination number.
Open full walkthroughHow to call India from United States
Origin access: 011
- 1Start with country code +91 for India.
- 2Remove a domestic trunk 0 before a fixed-line area code. Do not add a 0 before a ten-digit mobile number in international format.
- 3Use + on a mobile, or replace + with 011 when the origin network requires digits.
Destination mobile
- Domestic
- 9XXX XXX XXX
- Mobile / saved contact
- +91 9XXX XXX XXX
- From United States
- 011 91 9XXX XXX XXX
Destination landline
- Domestic
- 011 XXXXXXXX
- Mobile / saved contact
- +91 11 XXXXXXXX
- From United States
- 011 91 11 XXXXXXXX
Use +91 for a saved Indian contact. When a US-origin network requires digits, use 011 before 91 and omit the Indian domestic trunk 0 from a fixed-line pattern.
Open full walkthroughHow to call Australia from United States
Origin access: 011
- 1Start with country code +61 for Australia.
- 2Remove the leading domestic 0 before adding +61.
- 3Use + on a mobile, or replace + with 011 when the origin network requires digits.
Destination mobile
- Domestic
- 04XX XXX XXX
- Mobile / saved contact
- +61 4XX XXX XXX
- From United States
- 011 61 4XX XXX XXX
Destination landline
- Domestic
- 02 XXXX XXXX
- Mobile / saved contact
- +61 2 XXXX XXXX
- From United States
- 011 61 2 XXXX XXXX
Use +61 from a mobile or saved contact. From a US line that requires digits, replace + with 011 and remove Australia's domestic trunk 0.
Open full walkthroughHow to call Germany from United States
Origin access: 011
- 1Start with country code +49 for Germany.
- 2Remove the leading domestic 0 before adding +49.
- 3Use + on a mobile, or replace + with 011 when the origin network requires digits.
Destination mobile
- Domestic
- 015X XXXXXXXX
- Mobile / saved contact
- +49 15X XXXXXXXX
- From United States
- 011 49 15X XXXXXXXX
Destination landline
- Domestic
- 030 XXXXXXXX
- Mobile / saved contact
- +49 30 XXXXXXXX
- From United States
- 011 49 30 XXXXXXXX
Use +49 for a portable German contact. A US-origin fixed line can use 011 49, followed by the German national number without its domestic trunk 0.
Open full walkthroughHow to call India from United Kingdom
Origin access: 00
- 1Start with country code +91 for India.
- 2Remove a domestic trunk 0 before a fixed-line area code. Do not add a 0 before a ten-digit mobile number in international format.
- 3Use + on a mobile, or replace + with 00 when the origin network requires digits.
Destination mobile
- Domestic
- 9XXX XXX XXX
- Mobile / saved contact
- +91 9XXX XXX XXX
- From United Kingdom
- 00 91 9XXX XXX XXX
Destination landline
- Domestic
- 011 XXXXXXXX
- Mobile / saved contact
- +91 11 XXXXXXXX
- From United Kingdom
- 00 91 11 XXXXXXXX
Use +91 for a saved Indian contact. A UK line that requires an all-digit access string uses 00 91 and omits a domestic trunk 0 from an Indian fixed-line number.
Open full walkthroughHow to call United Kingdom from Australia
Origin access: 0011
- 1Start with country code +44 for United Kingdom.
- 2Remove the national prefix 0 before adding +44. The 0 is not part of the national significant number in international format.
- 3Use + on a mobile, or replace + with 0011 when the origin network requires digits.
Destination mobile
- Domestic
- 07700 900XXX
- Mobile / saved contact
- +44 7700 900XXX
- From Australia
- 0011 44 7700 900XXX
Destination landline
- Domestic
- 020 7946 XXXX
- Mobile / saved contact
- +44 20 7946 XXXX
- From Australia
- 0011 44 20 7946 XXXX
Use +44 for a saved UK contact. On an Australian service that requires digits, use 0011 44 and remove the UK domestic trunk 0.
Open full walkthroughHow to call United States from Japan
Origin access: 010; alternatives: 001, 0033, 0041, 0061
- 1Start with country code +1 for United States.
- 2There is no separate domestic trunk digit to remove. The digit 1 may be used before the ten-digit number for long-distance dialling, but it is also the shared country code in international notation.
- 3Use + on a mobile, or replace + with 010 when the origin network requires digits.
Destination mobile
- Domestic
- (202) 555-01XX
- Mobile / saved contact
- +1 202 555 01XX
- From Japan
- 010 1 202 555 01XX
Destination landline
- Domestic
- (212) 555-01XX
- Mobile / saved contact
- +1 212 555 01XX
- From Japan
- 010 1 212 555 01XX
Use +1 for a saved US contact. Japan commonly uses 010 for international access, while carrier-specific services can use another documented prefix before the +1 NANP destination.
Open full walkthroughCountry code, mobile and landline quick reference
Each row converts a domestic template into the reviewed international format. Area-code and service-prefix lengths can vary inside a country, so follow the linked country page instead of treating the visual spacing as a universal parser rule.
| Country / code | Mobile: domestic → international | Landline: domestic → international | Trunk-prefix rule |
|---|---|---|---|
| United States +1 | (202) 555-01XX → +1 202 555 01XX | (212) 555-01XX → +1 212 555 01XX | There is no separate domestic trunk digit to remove. The digit 1 may be used before the ten-digit number for long-distance dialling, but it is also the shared country code in international notation. |
| United Kingdom +44 | 07700 900XXX → +44 7700 900XXX | 020 7946 XXXX → +44 20 7946 XXXX | Remove the national prefix 0 before adding +44. The 0 is not part of the national significant number in international format. |
| Germany +49 | 015X XXXXXXXX → +49 15X XXXXXXXX | 030 XXXXXXXX → +49 30 XXXXXXXX | Remove the leading domestic 0 before adding +49. |
| France +33 | 06 XX XX XX XX → +33 6 XX XX XX XX | 01 XX XX XX XX → +33 1 XX XX XX XX | Remove the first 0 from the ten-digit domestic number before adding +33. |
| India +91 | 9XXX XXX XXX → +91 9XXX XXX XXX | 011 XXXXXXXX → +91 11 XXXXXXXX | Remove a domestic trunk 0 before a fixed-line area code. Do not add a 0 before a ten-digit mobile number in international format. |
| China +86 | 1XX XXXX XXXX → +86 1XX XXXX XXXX | 010 XXXXXXXX → +86 10 XXXXXXXX | Remove the domestic 0 from a fixed-line area code before adding +86. Mobile numbers do not use that fixed-line trunk 0. |
| Japan +81 | 090 XXXX XXXX → +81 90 XXXX XXXX | 03 XXXX XXXX → +81 3 XXXX XXXX | Remove the first domestic 0 before adding +81. |
| Australia +61 | 04XX XXX XXX → +61 4XX XXX XXX | 02 XXXX XXXX → +61 2 XXXX XXXX | Remove the leading domestic 0 before adding +61. |
| Brazil +55 | 0 XX 11 9XXXX XXXX → +55 11 9XXXX XXXX | 0 XX 11 XXXX XXXX → +55 11 XXXX XXXX | Remove the domestic 0 and any carrier-selection code before the two-digit area code when converting to +55 format. |
| South Africa +27 | 082 XXX XXXX → +27 82 XXX XXXX | 011 XXX XXXX → +27 11 XXX XXXX | Remove the leading domestic 0 before adding +27. |
| Singapore +65 | 8XXX XXXX → +65 8XXX XXXX | 6XXX XXXX → +65 6XXX XXXX | There is no domestic trunk prefix to remove from ordinary eight-digit numbers. |
| United Arab Emirates +971 | 050 XXX XXXX → +971 50 XXX XXXX | 04 XXX XXXX → +971 4 XXX XXXX | Remove the leading domestic 0 before adding +971. |
| Italy +39 | 3XX XXX XXXX → +39 3XX XXX XXXX | 06 XXXXXXXX → +39 06 XXXXXXXX | Retain the leading 0 on geographic numbers after +39. It is part of the Italian national significant number, not a removable trunk prefix. |
Plus sign, exit codes and carrier variations
Save the destination in + format because the plus sign adapts to the network where the call starts. If a phone or carrier requires digits, replace + with an access prefix from the origin country; never save that origin prefix as part of the destination number.
| Calling from | Common digits-only access | Practical variation |
|---|---|---|
| United States | 011 | Use + where supported; the digits-only prefix is an origin routing instruction. |
| United Kingdom | 00 | Use + where supported; the digits-only prefix is an origin routing instruction. |
| Germany | 00 | Use + where supported; the digits-only prefix is an origin routing instruction. |
| France | 00 | Use + where supported; the digits-only prefix is an origin routing instruction. |
| India | 00 | Use + where supported; the digits-only prefix is an origin routing instruction. |
| China | 00 | Use + where supported; the digits-only prefix is an origin routing instruction. |
| Japan | 010 | Other documented access services include 001, 0033, 0041, 0061. |
| Australia | 0011 | Use + where supported; the digits-only prefix is an origin routing instruction. |
| Brazil | 00 + carrier code | Domestic long-distance and some outbound international calls may use a two-digit carrier-selection code after 0 or 00. That carrier code is routing input, not part of the destination E.164 number. |
| South Africa | 00 | Use + where supported; the digits-only prefix is an origin routing instruction. |
| Singapore | 001 | Other documented access services include 002, 008, 013, 018, 019. |
| United Arab Emirates | 00 | Use + where supported; the digits-only prefix is an origin routing instruction. |
| Italy | 00 | Use + where supported; the digits-only prefix is an origin routing instruction. |
Which regional exceptions matter most?
Shared numbering plans
+1 covers the United States, Canada, and multiple Caribbean/Atlantic jurisdictions; the next digits resolve the destination.
Significant leading zero
Italian geographic numbers retain 0 after +39, unlike the removable trunk zero used by many countries.
Carrier-selection prefixes
Brazilian routing strings may contain a carrier code that must not be saved as part of the +55 destination number.
Overseas territories
A territory may share a parent code or use another code, so political association alone does not determine the dial string.
Handle the exceptions
Shared top-level codes, toll-free ranges and travel networks need more than a country-code substitution.
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.
- National numbering plan: United StatesInternational 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.
- National numbering plan: GermanyInternational Telecommunication Union. Verified 2026-07-19.
- National numbering plan: FranceInternational Telecommunication Union. Verified 2026-07-19.
- National numbering plan: IndiaInternational Telecommunication Union. Verified 2026-07-19.
- National numbering plan: ChinaInternational Telecommunication Union. Verified 2026-07-19.
- National numbering plan: JapanInternational Telecommunication Union. Verified 2026-07-19.
- National numbering plan: AustraliaInternational Telecommunication Union. Verified 2026-07-19.
- National numbering plan: BrazilInternational Telecommunication Union. Verified 2026-07-19.
- National numbering plan: South AfricaInternational Telecommunication Union. Verified 2026-07-19.
- National numbering plan: SingaporeInternational Telecommunication Union. Verified 2026-07-19.
- National numbering plan: United Arab EmiratesInternational 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.