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Disclaimer: Phony works with international numbers only, such as 61 412 345 678!

The (admittedly crazy) goal of this Gem is to be able to normalize/format/split all phone numbers in the world.

Used in:,, (and many, many others).

Runtime Memory Usage

According to memory_profiler, the Phony gem uses roughly 1MB of memory per Ruby process.
Usage was generated using (look for Total retained): ruby -e 'require "memory_profiler"; "phony"){ require "phony" }.pretty_print'


This gem normalizes, formats and splits E164 phone numbers. A valid E164 phone number must include a country code.

E164 numbers are international numbers with a country dial prefix, usually an area code and a subscriber number. For example, the Australian number +61 412 345 678 can be broken down into the following components:

  • Country Code (CC): a country code of 61
  • National Destination Code (NDC): a mobile number denoted by the 4 (specific to Australia)
  • Local Number Part: a subscriber number of 12 345 678

It currently handles the countries listed at the end of this README.

It is covered by roughly 2,250 tests that run in 2 seconds (April 2019).
If it doesn’t work, please enter an issue or better, fork and send a pull request.


With Rails? Check out:

With Bundler: Append gem 'phony' to your Gemfile and bundle install it.

Without Bundler: Run gem install phony from your command line.

Usage docs

Phony uses qed as docs and to run its functional tests. Start here for usage docs: Usage index.


Normalize intelligently removes all non-numeric characters of a number. Do it before storing a number in a DB.

Phony.normalize docs

Phony.normalize('1-888-407-4747').assert == '18884074747'

Phony.format(number, options = {})

Format formats a normalized number according to a country’s predominant formatting. Lots of options for int’l, national, local formatting.

Phony.format docs

Phony.format('41443643532').assert == '+41 44 364 35 32'

Phony.plausible?(number, options = {})

Is a number plausible?

Phony.plausible? docs

Phony.assert.plausible?('+41 44 111 22 33')


Split a number into its parts: CC, NDC, local.

Phony.split docs

Phony.split('3928061371').assert == ['39', '2', '806', '1371']

NB If a country does not have an NDC, #split will return false in the NDC position, for example for Denmark:

Phony.split('4512121212').assert == ['45', false, '12', '12', '12', '12']

Loading only a country subset (Phony 2.18.0+).

Use this in case you’d like to save memory that is used by Phony’s CC rules.

Phony::Config.load docs

First, require 'phony/config'.
Then, one of the following, which will load the rest of Phony.

Load only these CCs:
Phony::Config.load(only: ['41', '44'])

Loads everything except these CCs:
Phony::Config.load(except: ['41', '44'])

Convenience form of only:
Phony::Config.load('41', '44')

Each of these loads the rest of Phony.

Memory usage can be checked using (look for Total retained):
ruby -e 'require "memory_profiler"; "phony"){ require "phony/config"; Phony::Config.load("1") }.pretty_print'
For example, when just loading the NANP CC, the retained memory usage is ~63kB.

List of Handled Countries

Mildly unmaintained list: Abhas, Afghan, Algerian, Argentina, Austrian, Australian, Azerbaijani, Belgian, Brazilian, Cambodian, Chilean, Chinese, Croatian, Cuban, Cypriot, Czech, Danish, Dutch, Egyptian, El Salvadorian, Estonian, French, German, Ghanan, Gibraltar, Greek, Haiti, Hong Kong, Hungarian, Indian, Iran, Irish, Israel, Italian, Japanese, Kazakh, Liberian, Lithuanian, Luxembourgian, Malaysian, Malta, Mexican, Monaco, Morocco, New Zealand, Nigerian, Norwegian, Peruvian, Polish, Romanian, Russian, Rwandan, Seychelles, Singapore, Slovakian, South African, South Korean, South Osetian, Spanish, Sri Lankan, Sudan, Swedish, Swiss, Thailand, Tunisian, Turkish, Liechtenstein, UK, US, Venezuelan, Vietnamese, and Zambian numbers.

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See LICENSE file.


E164 international phone number normalizing, splitting, formatting.






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