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!

Library for domain name manipulation

Project Description

# Dnspy
### A library for domain name manipulation


_Dnspy_ offers functionality to manipulate fully qualified domain names (FQDNs), such as
extracting _subdomains_ and _domain labels_ from a FQDN.


1. To install _Dnspy_, first download the compressed tar ball _dnspy-1.0.tar.gz_

2. Untar the downloaded file:
$ tar xvzf dnspy-1.0.tar.gz

3. Install the library
$ cd dnspy-1.0
$ python install


The following examples illustrate the use of this module:

# Using the Dnspy module to get sub-domains of a domain, given the default effective
# top-level domain (ETLD) list

>>> from dnspy.dnspy import Dnspy
>>> d = Dnspy() # Load the default ETLD list from Mozilla
>>> d.subdoms('')
['com', '', '']

>>> d.subdoms('', n = 4)
['com', '', '', '']

>>> d.subdoms('', n = -1)

>>> d.domlabels('')
['com', 'google', 'd']

>>> d.domlabels('', n = 4)
['com', 'google', 'd', 'c']


To illustrate the use of a custom ETLD list:

$ cat /tmp/custom_etlds.txt
Now use the custom ETLD list:
>>> from dnspy.dnspy import Dnspy
>>> d = Dnspy(etld_url='file:///tmp/custom_etlds.txt')
>>> d.subdoms('')
['testetld', 'google.testetld', '']

The `etld_url` parameter passed to the Dnspy constructor, can point to any
valid URL, including http URLs.

To run unit tests:
$ cd test/
$ python -m unittest test_dnspy
Ran 3 tests in 2.813s




To uninstall, remove the directory from the disk. On debian systems, for instance:

$ rm -rf /usr/local/lib/python2.7/dist-packages/dnspy

Copyright © 2015 Sandeep Yadav (Damballa)

Distributed under the BSD license

Release History

This version
History Node


History Node


Download Files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Filename, Size & Hash SHA256 Hash Help File Type Python Version Upload Date
(4.2 kB) Copy SHA256 Hash SHA256
Source None May 29, 2017

Supported By

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 Google Google Cloud Servers