This is because Git Books uses Cloudflare. You want to make the DNS record :grey:
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Configuring DNS Answer from Cyb3r-Jak3 on community.cloudflare.com
GitBook
docs.gitbook.com › published-documentation › custom-domain › configure-dns
3. Configure the DNS | GitBook Documentation
May 9, 2024 - Enter your full subdomain, select CNAME from the dropdown list, and press the Search button. DNS cache servers around the world will respond to let you know what their cached result is.
Discoposse
discoposse.com › home › setting up a gitbook for a custom domain
Setting up a GitBook for a Custom Domain - DiscoPosse.com
November 7, 2016 - The first thing to do is to make sure that you get your DNS configured. Open up your AWS Route53 console, select the radio button for your domain, and click the Go to Record Sets button: Create a new CNAME ...
CNAME for the docs.cyberscope.io (Gitbook) record is Banned
We created a CNAME record in order to point a Gitbook documentation. So the https://docs.cyberscope.io/ will point to the 782112fe24-hosting.gitbook.io as required by the Gitbook. But currently, we phase a “CNAME Cross-User Banned” issue. We saw this article that recommends contacting you ... More on community.cloudflare.com
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February 14, 2023GitBook cross-user CNAME issue
I have a space on GitBook for each of two of my projects, and I’ve configured a custom domain for both. One of them (deut.yamka.app) works flawlessly, but docs.yamka.app refuses to work with a 1014 error. The CNAME targets for these records are hosting.gitbook.io, and the cloud icon is grayed ... More on community.cloudflare.com
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October 22, 2021Error 1014 CNAME Cross-User Banned with gitbook.com
Error 1014 CNAME Cross-User Banned with gitbook.com I want to add CNAME for gitbook.com More on community.cloudflare.com
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May 20, 2021express - Is there a way to way to control which CNAME gets what content? - Stack Overflow
For example if someone has a cname ... like to know if there is a way to add new cnames to my list so that I can have them view a certain page? Just to make this more understandable this, I want to do something like https://www.gitbook.com/ do with their cnames, and cname ... More on stackoverflow.com
Jinlaixu
blog.jinlaixu.net › books › gitbook-documentation › book › domains.html
Custom Domains | GitBook Documentation
Set the www record to a CNAME and set the URL field to: www.gitbook.com.
GitHub
github.com › Jack-Roc › gitbook › blob › master › CNAME
gitbook/CNAME at master · Jack-Roc/gitbook
Contribute to Jack-Roc/gitbook development by creating an account on GitHub.
Author: Jack-Roc
GitBook
gitbook.com › docs › publishing-documentation › custom-domain
Set a custom domain | GitBook Documentation
January 6, 2026 - If the CNAME record is incorrect, we won't be able to configure the SSL certificate and complete the custom domain set-up.
Cloudflare Community
community.cloudflare.com › application performance › dns & network
CNAME for the docs.cyberscope.io (Gitbook) record is Banned - DNS & Network - Cloudflare Community
February 14, 2023 - We created a CNAME record in order to point a Gitbook documentation. So the https://docs.cyberscope.io/ will point to the 782112fe24-hosting.gitbook.io as required by the Gitbook. But currently, we phase a “CNAME Cross-U…
GitHub
github.com › Oreomeow › Gitbook › blob › main › CNAME
Gitbook/CNAME at main · Oreomeow/Gitbook
Oreo‘s Gitbook. Contribute to Oreomeow/Gitbook development by creating an account on GitHub.
Author: Oreomeow
secretGeek
til.secretgeek.net › gitbook › host_on_custom_subdomain.html
Host a gitbook on a custom subdomain - secretGeek.net
By default the book is hosted on http://{author}.gitbooks.io/{book}/ and can be read at https://www.gitbook.com/read/book/{author}/{book} If you want to host it on a custom sub domain then you may need to add a cname record at your webhost.
Gitbook
backbench.gitbook.io › backbench-docs › troubleshooting-and-support › cname-support
CNAME Support - Backbench Docs
From your DNS provider, you can set a CNAME/ALIAS record for backbench endpoint.
Cloudflare Community
community.cloudflare.com › application performance › dns & network
GitBook cross-user CNAME issue - DNS & Network - Cloudflare Community
October 22, 2021 - I have a space on GitBook for each of two of my projects, and I’ve configured a custom domain for both. One of them (deut.yamka.app) works flawlessly, but docs.yamka.app refuses to work with a 1014 error. The CNAME targets for these records are hosting.gitbook.io, and the cloud icon is grayed ...
Cloudflare Community
community.cloudflare.com › application performance › dns & network
Error 1014 CNAME Cross-User Banned with gitbook.com - DNS & Network - Cloudflare Community
May 20, 2021 - CNAME records are permitted within a domain ( www.example.com CNAME to api.example.com ) and across zones within the same user account ( www.example.com CNAME to www.example.net ).
Server Fault
serverfault.com › questions › 1015369 › how-to-issue-a-ssl-certificate-for-a-domain-i-do-not-own
How to issue a SSL certificate for a domain I do not own - Server Fault
May 3, 2020 - Using their platform they have a feature where you can specify your own domain docs.mydomain.com, from there they are able to serve their website on HTTPS and provide a certificate. All I had to do was enter a CNAME record for hosting.gitbook.com.
GitHub
github.com › Defiville › gitbook › blob › main › CNAME
gitbook/CNAME at main · Defiville/gitbook
Defiville world gitbook. Contribute to Defiville/gitbook development by creating an account on GitHub.
Author: Defiville
Gitbooks
yantaishuiwu.gitbooks.io › gitbook_documentation › content › en › › platform › domains.html
Custom Domains | gitbook_documentation
Set the www record to a CNAME and set the URL field to: www.gitbooks.io.
GitBook
docs.gitbook.com › published-documentation › custom-domain › finalize
Confirming the custom domain setup | GitBook Documentation
Once your CNAME record has taken effect, or has propagated, you’re ready to confirm the setup in GitBook.
GitBook
docs.gitbook.com › publishing › custom-domain › configure-dns
Configuring DNS - GitBook Documentation
Homepage · SolutionsPricingAbout · CommunityBlogSign up · HomepageSolutionsPricingAboutCommunityBlogSign up · Ask or search · Ctrl + K · Getting Started · Welcome · Quickstart · Importing content
Answer Overflow
answeroverflow.com › m › 1361375264092848399
gitbook and digital ocean domain verification fails when multiple CNAME records exist - Cloudflare Developers
April 14, 2025 - I think this is something to do with the "Error 1014" CNAME Cross-User Banned cloudflare error - indicating that Cloudflare sees that two different accounts (website1 and website2) have the same CNAME record even though it is deleted for many days now. See https://docs.tonomy.io which should point to gitbook.
Cloudflare Community
community.cloudflare.com › application performance › dns & network
CNAME Cross-User Banned with Gitbooks - DNS & Network - Cloudflare Community
October 30, 2023 - Ok, so, from the past 7 days, I have been trying to add a docs subdomain using CNAMe record. I am hosting the website on Gitbooks, but somehow Cloudflare is blocking the request by saying " CNAME Cross-User Banned". I ha…