We checked to see if Dockerfile.dev is down or online.

 Dockerfile.devis online

HTTP 200  ·  593 ms  ·  reachable from our server

It looks online to us. If it won't load for you, the problem is probably on your end.

Clear

Is it down for everyone, or just me?

When a website won't load, the first question is always the same: is the site actually down, or is the problem on your end? IsDownOrOnline answers that in seconds. Enter any domain above and we'll connect to it from our server, just like a browser would, and report whether it responds. If it loads for us but not for you, the issue is probably local — your connection, your device, or your network.

How the checker works

We send a real HTTP request to the address you enter and measure the response. A successful reply (an HTTP status in the 200–399 range) means the server is reachable and serving content, so we mark it online. A failed connection, a timeout, or a server error means it looks down. We also show the response time in milliseconds so you can spot a site that's technically up but painfully slow.

Learn more

New to troubleshooting outages? These guides walk you through the basics: