Mark Ku's Blog

Problem

Recently our campoany new website migrate to Vercel. The old webiste domain is non-WWW.
Consider the original website SEO.
We need bindding second domain in Vercel.

but it's not working.

https://abc.com 

Referring to Vercel offical documentation to do, but is not working

Discover nzxt's website,they also using Vercel, but they can bindding second domain

NZXT.com website homepage with email newsletter signup pop-up
NZXT.com website homepage with email newsletter signup pop-up

I using online nslookup tool get nzxt's DNS A record

https://mxtoolbox.com/ MXToolbox DNS lookup for nzxt.com A record showing Amazon IP

Change our DNS

I thing ip is wrong in vercel offical documentation. Modify Cloudfalre DNS A record, from 76.76.21.21 to 76.223.126.88
Cloudflare DNS A record for markkulab.net showing IP 76

See it's work

Browser window displaying markkulab.net website, address bar highlighted
Browser window displaying markkulab.net website, address bar highlighted

Make sure custom domain setting in Vercel

Vercel Domains page showing markkulab.net domain configuration
Vercel Domains page showing markkulab.net domain configuration

Author

Mark Ku

擁有 10+ 年經驗的資深軟體工程師,現為 AI 應用 Builder,專注於大型平台架構與簡化複雜系統設計,從電商系統到訂閱與收費平台,結合 AI Agent、AI 整合與自動化開發,打造高效率且可持續演進的產品技術基礎。Read More

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