[▲ Vercel Community](/) · [Categories](/categories) · [Latest](/latest) · [Top](/top) · [Live](/live) [Help](/c/help/9) # Vercel subdomain verification fails when parent domain DNS is inaccessible 20 views · 0 likes · 3 posts dindonero (@daraujo-6169) · 2026-03-13 ## Problem I’m trying to add `futuremaker.novaims.unl.pt` to my Vercel project, but verification requires a `TXT` record at `_vercel.unl.pt`. I only have DNS control over the `novaims.unl.pt` zone — I cannot add records to the parent `unl.pt` domain, as that is managed by Universidade Nova de Lisboa’s central IT. This is the same issue reported in: * [Vercel domain verification fails for university subdomain smid.snu.ac.kr](https://community.vercel.com/t/vercel-domain-verification-fails-for-university-subdomain-smid-snu-ac-kr/34385) * [Vercel domain ownership verification prompt for subdomains on Public Suffix List](https://community.vercel.com/t/vercel-domain-ownership-verification-prompt-for-subdomains-on-public-suffix-list/34749) ## Proposed Solutions Could you either: 1. Treat `novaims.unl.pt` (or `unl.pt`) as an effective apex/public suffix in Vercel’s internal PSL, so the `TXT` verification is requested at `_vercel.novaims.unl.pt` instead — this would allow us to deploy other projects under `novaims.unl.pt` in the future without running into this same issue each time. This is our preferred option. 2. Perform a manual domain verification for `futuremaker.novaims.unl.pt`. I can prove ownership by adding any DNS record under `novaims.unl.pt`. system (@system) · 2026-03-13 The domain troubleshooting guide can help with most custom domain configuration issues. You might be able to use that guide to solve it before a human is available to help you. Then you can come back here and share the answer for [bonus points](https://community.vercel.com/t/introducing-the-vercel-leaderboard/1358). https://vercel.com/docs/projects/domains/troubleshooting You can also use [v0](https://v0.dev/) to narrow down the possibilities. Anshuman Bhardwaj (@anshumanb) · 2026-03-13 Hi @daraujo-6169, welcome to the Vercel Community! I understand your issue but since `unl.pt` isn't part of the official https://publicsuffix.org/list/public_suffix_list.dat we can't add it to ours. I'd recommend using one of the listed TLDs or stick with `*.vercel.app` for the time being.