Add preview.v0.dev

[tk04]

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:

  security@vercel.com

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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.

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Description of Organization

I'm an engineer at Vercel working on v0.app, a platform that lets users generate websites by providing text prompts. These generated sites can be previewed directly on v0.app. For hosting these sites, we plan to use the preview.v0.dev domain, with each site served from its own subdomain.

Organization Website:: https://vercel.com

Reason for PSL Inclusion

v0 will host user-generated sites at .preview.v0.dev, serving content separate from our main application at v0.app. We'd like to add preview.v0.dev to the PSL so that browsers treat each subdomain (e.g., site-a.preview.v0.dev, site-b.preview.v0.dev) as a separate registrable domain, preventing cross-site cookie access between user-generated sites.

Number of users this request is being made to serve: 100,000+

DNS Verification

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Related: #2121