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The effective TLD list is an attempt to build a database of top-level domains and their respective registry's policies on domain registrations at different levels.
Currently, most browsers, including Mozilla ones, use an algorithm which basically only denies setting wide-ranging cookies for top-level domains with no dots (e.g. com or org). However, this does not work for top-level domains where only third-level registrations are allowed (e.g. co.uk). In these cases, websites can set a cookie for co.uk which will be passed onto every website registered under co.uk.
Clearly, this is a security risk as it allows websites other than the one setting the cookie to read it, and therefore potentially extract sensitive information.
Since there is no algorithmic method of finding the highest level at which a domain may be registered for a particular top-level domain (the policies differ with each registry), the only method is to create a list of all top-level domains and the level at which domains can be registered. This is the aim of the effective TLD list.
As well as being used to prevent cookies from being set when where they shouldn't be, the list can also potentially be used for other applications where the registry controlled and privately controlled parts of a domain name need to be known, for example when grouping by top-level domains.
== Data collection ==
Maintaining an up-to-date list of all top-level domains and policies is clearly a vast task, and therefore each registry will be asked to maintain their own section of the database and post email any changes regularly to the effective TLD list maintenance team, who will then merge it with the master database and make the updated file available at regular intervals.
Once fine details have been sorted out, registries for all top-level domains will be contacted and directed to a website by email (possibly via an ICANN mailing list) that will inform them of the intentions of the effective TLD list, how to participate and formats for data files.
== Tasks to do ==
# Make the website for registries
# Sort out a contact email address
# Decide on how to prevent email forgery (Gerv recommends "pinging" each registry that sends an email and get them to confirm that they actually send it)# Define the file format for the effective TLD list(copy from [http://wiki.mozilla.org/Gecko:Effective_TLD_Service# Find a way of easily contacting all registriesThe_domain_file])
# Author an email and send it to all registries
# Monitor the email address regularly and manage changes
# Make the effective TLD list file available to other browser manufacturers
== Possible names Names ==
== Possible content Content of email ==
* What is the Effective TLD Public Suffix List? * Format to submit records and trivial examples(there may be a website with examples that we can link to from the email) * Email address for submissions == Things to remember == * A single point of contact for all browser makers* Clear, obvious instructions as to what information to submit* Clear documentation of the format to use
== Links ==
=== TLD Lists ===
* [http://lxr.mozilla.org/mozilla/source/netwerk/dns/src/effective_tld_names.dat?raw=1 Current Effective TLD List] (update)
* [http://en.wikipedia.org/wiki/List_of_Internet_top-level_domains Wikipedia: List of Internet top-level domains]
* [http://wiki.mozilla.org/TLD_List TLD list - MozillaWiki] (update)
=== Mozilla Bug Reports ===
* [http://weblogs.mozillazine.org/gerv/archives/2007/01/effective_tld_list_help_wanted.html Hacking for Christ: "Effective TLD" List: Help Wanted]
* [http://my.opera.com/yngve/blog/show.dml/267415 How to make sure the cookies don't burn your fingers? - Implementer's notes - by Yngve Nysaeter Pettersen]
--[[User:Rubena|Rubena]] 13:08, 14 February 2007 (PST)
