public-suffix.json

[spirillen]

I'm trying to understand the 'public-suffix.json'.

What I can guess from https://pyfunceble.readthedocs.io/en/latest/code/publicsuffix.html it is a kind of whitelist, is that corect?

if [ a == yes ]
then
  How do I omit it?
else
  if [ a == no ]
  why are domains like blogspot.tld listed there (as those are some I really don't like to be whitelisted in my project...)
  fi
fi

[funilrys]

Hi @spirillen,

We only use the public-suffix.json as a comparison tool which helps us determine if a (public) domain has a valid syntax and is a subdomain. If you remember, we recently talked (elsewhere) about sorting for example.

To quote myself:

But, if ccc.com is registered into the PSL which we parsed into public-suffix.json we sort in the following order.

• ccc.com
• aaa
• bbb

Of course, it was explained for the sorting routine. But we use it to mainly determine if a domain is a subdomain. Why that? Well, we don't request a WHOIS record for the subdomain.

Let me know if it's not clear.

Cheers,
Nissar

P.S: It has nothing do to with whitelisting. Please follow https://pyfunceble.readthedocs.io/en/latest/columns/source.html#special for something which may look like whitelisting ...

[spirillen]

That is a top teen answer 🌟 And yes I do remember the talk on sorting :)

Allow me to add a quote from the PSL link you provided for other readers

A "public suffix" is one under which Internet users can (or historically could) directly register names. Some examples of public suffixes are .com, .co.uk and pvt.k12.ma.us. The Public Suffix List is a list of all known public suffixes.

And it all make a very good sense to me now, thanks for the reply