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@mlcjtew mlcjtew commented Aug 29, 2025

Public Suffix List (PSL) Submission

Checklist of required steps

  • Description of Organization

  • Robust Reason for PSL Inclusion

  • DNS verification via dig

  • Each domain listed in the PRIVATE section has and shall maintain at least two years remaining on registration, and we shall keep the _psl TXT record in place in the respective zone(s).

Submitter affirms the following:

  • We are listing any third-party limits that we seek to work around in our rationale such as those between IOS 14.5+ and Facebook (see Issue #1245 as a well-documented example)
  • Cloudflare
  • Let's Encrypt
  • MAKE SURE UPDATE THE FOLLOWING LIST WITH YOUR LIMITATIONS! REMOVE ENTRIES WHICH DO NOT APPLY AS WELL AS REMOVING THIS LINE!
  • This request was not submitted with the objective of working around other third-party limits.
  • The submitter acknowledges that it is their responsibility to maintain the domains within their section. This includes removing names which are no longer used, retaining the _psl DNS entry, and responding to e-mails to the supplied address. Failure to maintain entries may result in removal of individual entries or the entire section.
  • The Guidelines were carefully read and understood, and this request conforms to them.
  • The submission follows the guidelines on formatting and sorting.
  • A role-based email address has been used and this inbox is actively monitored with a response time of no more than 30 days.

Abuse Contact:

  • Abuse contact information (email or web form) is available and easily accessible.

    URL where abuse contact or abuse reporting form can be found: [email protected]


For PRIVATE section requests that are submitting entries for domains that match their organization website's primary domain, please understand that this can have impacts that may not match the desired outcome and take a long time to rollback, if at all.

To ensure that requested changes are entirely intentional, make sure that you read the affectation and propagation expectations, that you understand them, and confirm this understanding.

PR Rollbacks have lower priority, and the volunteers are unable to control when or if browsers or other parties using the PSL will refresh or update.

(Link: about propagation/expectations)

  • Yes, I understand. I could break my organization's website cookies and cause other issues, and the rollback timing is acceptable. Proceed anyways.

Description of Organization

The Mississippi Library Commission is committed through leadership, advocacy, and service to strengthening and enhancing libraries and library services for all Mississippians. Some of the ways we help the public libraries in the State of Mississippi is by providing web services such as email and web hosting. We currently host the websites for thirty-three different library systems across the state.

We are the sole managers of the "lib.ms.us" domain.

Organization Website: https://www.mlc.lib.ms.us/

Reason for PSL Inclusion

We would like to please ask that the "lib.ms.us" domain be removed from the PSL. The "lib.ms.us" domain's presence on the list causes issues renewing certificates with "Let's Encrypt" and the migration process to new web servers.

Number of users this request is being made to serve: thousands

DNS Verification

dig +short TXT _psl.lib.ms.us
"https://github.com/publicsuffix/list/pull/2581"

@mlcjtew mlcjtew marked this pull request as ready for review August 29, 2025 21:06
@hiifeng
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hiifeng commented Sep 2, 2025

After verification, lib.ms.us is indeed controlled by the submitter, and the TXT verification record is correct.


@mlcjtew Once it is removed from the PSL, it could lead to potential cookie leakage risks. Using Subfinder, I observed that lib.ms.us still has a large number of subdomains. Do you know who is currently operating these subdomains?

@mlcjtew
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mlcjtew commented Sep 2, 2025

@hiifeng We operate all the subdomains of "lib.ms.us" and understand the risks.

@hiifeng
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hiifeng commented Sep 3, 2025

@hiifeng We operate all the subdomains of "lib.ms.us" and understand the risks.

Thank you for your quick response. Let's wait for further review from the PSL team or other volunteers.

@mlcjtew mlcjtew changed the title Update public_suffix_list.dat Please remove "lib.ms.us" from PSL Sep 3, 2025
@simon-friedberger
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Please remove properly instead of commenting.

@mlcjtew
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mlcjtew commented Sep 3, 2025

@simon-friedberger Ok, done. Let me know if you need anything else.

@simon-friedberger simon-friedberger merged commit 5fcdf44 into publicsuffix:main Sep 4, 2025
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3 participants