fqdnValidates fully-qualified domain names against RFC 1123, so that they are acceptable to modern bowsers
tldextractAccurately separates a URL's subdomain, domain, and public suffix, using the Public Suffix List (PSL). By default, this includes the public ICANN TLDs and their exceptions. You can optionally support the Public Suffix List's private domains as well.
ndg-httpsclientProvides enhanced HTTPS support for httplib and urllib2 using PyOpenSSL
publicsuffix2Get a public suffix for a domain name using the Public Suffix List. Forked from and using the same API as the publicsuffix package.