Skip to main content
This is a pre-production deployment of Warehouse. Changes made here affect the production instance of PyPI (
Help us improve Python packaging - Donate today!

Returns IDN restriction level of a string.

Project Description

# IDNCheck

IDNcheck performs safety checks on international domain names. This might be useful if you want to see how likely a given domain is to be used for nefarious purposes such as phishing. It returns the unicode restriction level passed by a string, as described in Unicode Technical Standard #39, Unicode Security Mechanisms (see References).

Note: On first run, it will automatically download a file if it doesn’t exist:

## How to use

Typical usage might look something like this:

python >>> import idncheck >>> idncheck.idncheck(“hello”) 1 >>> idncheck.idncheck(“φilosoφia”) 42 >>> idncheck.idncheck(“φilosoφia”, 3) # FIXME True >>> idncheck.idncheck(“paypal”) 1 >>> idncheck.idncheck(“paypаl”) 4 >>> idncheck.idncheck(“раура1”) 4


#!/usr/bin/env python

import idncheck

idncheck.idencheck(“φilosoφia”, 3): # FIXME
print(“I see what you’re doing there”)

## References

This tool serves as an implementation of the Restriction-Level detection described in Unicode Technical Standard #39, Unicode Security Mechanisms:

Additional use cases and details are available in these blog posts:


  • Create a web service on a Gandi Python Simple Hosting instance
Release History

Release History

This version
History Node


Supported By

WebFaction WebFaction Technical Writing Elastic Elastic Search Pingdom Pingdom Monitoring Dyn Dyn DNS Sentry Sentry Error Logging CloudAMQP CloudAMQP RabbitMQ Heroku Heroku PaaS Kabu Creative Kabu Creative UX & Design Fastly Fastly CDN DigiCert DigiCert EV Certificate Rackspace Rackspace Cloud Servers DreamHost DreamHost Log Hosting