diff --git a/cloudflare/redirect-whole-domain.md b/cloudflare/redirect-whole-domain.md
new file mode 100644
index 0000000000..ca73120057
--- /dev/null
+++ b/cloudflare/redirect-whole-domain.md
@@ -0,0 +1,20 @@
+# Redirecting a whole domain with Cloudflare
+
+I had to run this site on `til.simonwillison.org` for 24 hours due to a domain registration mistake I made.
+
+Once I got `til.simonwillison.net` working again I wanted to permanently redirect the URLs on the temporary site to their equivalent on the correct domain.
+
+Since I was running the site behind [Cloudflare](https://www.cloudflare.com/), I could get Cloudflare to handle the redirects for me using a Page Rule, which support wildcards for redirects.
+
+I used these settings:
+
+- URL: `til.simonwillison.org/*`
+- Setting: Forwarding URL
+- Status code: 301 (permanent redirect)
+- Destination URL: `https://til.simonwillison.net/$1`
+
+This did the right thing - hits to e.g. https://til.simonwillison.org/cloudflare?a=1 redirect to https://til.simonwillison.net/cloudflare?a=1
+
+Here's a screenshot of the settings page I used to create the new Page Rule:
+
+![Screenshot of the Cloudflare interface. Create a Page Rule for simonwillison.org.  If the URL matches: URL (required) til.simonwillison.org/*  Then the settings are: Forwarding URL https://til.simonwillison.net/$1  Select status code (required) 301 - Permanent Redirect. Save and Deploy Page Rule](https://github.com/simonw/til/assets/9599/6758a865-57fa-4da1-9e41-118f41e1d7b2)