Are these real phone numbers?

No. Where a country reserves a fictional block (such as UK 07700 900xxx or US 555-01xx), the tool uses it. Elsewhere it uses plausible prefixes with random subscriber digits, so the combination is fabricated and should never be dialled.

What is E.164 format?

E.164 is the international telephone numbering standard: a plus sign, the country calling code, then the national subscriber number with no spaces, up to 15 digits total. Most global APIs require it.

Why does each country have a different length?

National number lengths vary — France has 9 significant digits, Germany varies, India has 10, Japan differs by line type. The tool encodes a representative length per country so the output looks correct.

Can I trust the country dialling codes?

Yes — the calling codes (like +44, +49, +91, +81) are the real ITU-assigned codes. Only the subscriber digits are randomised, and reserved fiction blocks are used where available.

Is anything sent to a server?

No. All generation runs locally in your browser. Nothing is uploaded, stored, or logged.

What is the International Fake Phone Number Generator?

Generate phone numbers with realistic country-code formatting for 30+ countries, using each nation's fictional or reserved number ranges where they exist. Choose a country, get correctly-prefixed E.164 and national-format numbers for testing international phone validation. It runs free in your browser on Gera Tools, with nothing uploaded.

International Fake Phone Number Generator

Name: International Fake Phone Number Generator
Creator: Gera Tools
License: https://creativecommons.org/licenses/by/4.0/

Generate country-correct fake phone numbers

This tool builds phone numbers that match a chosen country’s real dialling conventions — the correct ITU country calling code, a plausible national prefix, and the right total length — so they pass front-end format checks. Where a country publishes a reserved fiction block (the UK and US do), the tool uses it so the number can never reach anyone. It is built for testing international phone-input validation, demos, and seed data.

How it works

Every number is expressed in two ways. E.164 is the canonical international form: + then the country code then the national significant number, total length capped at 15 digits. The national format shows the in-country presentation with the trunk prefix (often 0) and typical spacing. For each country the generator stores the calling code, the national number length, a leading subscriber digit pattern, and — for the UK and US — the official reserved fictional range. It then fills the remaining positions with random digits.

Country-specific conventions that trip up validators

International phone validation is harder than it looks because each country has its own rules about length, leading digits, and trunk prefixes. A few examples of where implementations commonly fail:

France (+33). French mobile numbers start with 06 or 07 in national format. The trunk prefix 0 is dropped in E.164, so 06 12 34 56 78 becomes +33612345678. A validator that expects the 0 in E.164 will incorrectly reject it.

Germany (+49). Germany has variable-length national numbers — city codes can be 2 to 5 digits and the subscriber part fills the remaining length. A validator that expects a fixed 10-digit national number will fail on legitimate German numbers.

India (+91). Indian mobile numbers are 10 digits starting with 6, 7, 8, or 9. Landline numbers start with smaller digits and include area codes. A single regex that does not account for this split will accept or reject numbers it should not.

UK (+44). The UK publishes an official fiction block: 07700 900xxx for mobile and 020 7946 0xxx for London landline. Numbers in these ranges are guaranteed never to be allocated to a real subscriber, making them the safest choice for test data.

This generator handles the national-length and prefix rules for each country so the output passes format validation without you having to encode each country’s rules from scratch.

E.164 versus national format

Use E.164 (+countrycode...) when feeding data to:

SMS APIs (Twilio, Vonage, AWS SNS)
Phone number validation libraries like Google’s libphonenumber
International CRM and contact systems

Use national format when:

Displaying numbers to users in their own country
Testing a localised UI that formats numbers for a specific locale

Practical tips

Generate a batch across several countries to stress-test a validator that must accept any valid international number.
Prefer E.164 for storage; format for display at render time using a library rather than storing pre-formatted strings.
For countries without a published fiction block, treat generated numbers as format-only stubs — never dial them.
Pair this with the dedicated US and UK generators when you need the full set of reserved fiction ranges for those countries.