Question 1

How do I integrate the Public Suffix List into my application?

Accepted Answer

Download the raw list from the repository and parse it in your code, or use a pre-built library for your language that handles updates and lookups automatically. Regular updates are needed to stay current with changes.

Question 2

What's the difference between the Public Suffix List and just using ICANN's TLD list?

Accepted Answer

The Public Suffix List is more comprehensive, including private domains and country-code variations beyond ICANN TLDs, which is crucial for accurate cookie scoping and security in global applications.

Question 3

Is the Public Suffix List free for commercial use?

Accepted Answer

Yes, it's an open-source dataset maintained by volunteers under permissive terms, allowing free integration into both open-source and proprietary projects without licensing fees.

Question 4

How often should I update the Public Suffix List in my project?

Accepted Answer

Update periodically based on your application's needs; since changes are infrequent but critical, many tools schedule weekly or monthly pulls to balance freshness with performance.

Question 5

Can I request a new public suffix entry for my domain?

Accepted Answer

Yes, by submitting a pull request on GitHub, but you must provide thorough rationale and follow strict guidelines to avoid delays or rejection, as emphasized in the README.

Question 6

Public Suffix List or built-in browser APIs: which is better for domain parsing?

Accepted Answer

The Public Suffix List is the underlying data source for many browser APIs, so using it directly gives more control and consistency across environments, though it requires manual integration.

The Public Suffix List

What is The Public Suffix List?

Overview

Use Cases

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Pros & Cons

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Frequently Asked Questions