ERR_ICANN_NAME_COLLISION when trying to use localhost .dev in Chrome

localhost

Today I got this error when trying to access local domains specified in apache httpd-vhosts.conf. It happened for the 1st time with a .dev domain, so it seemed plausible that in light of recent news Goggle finally got it.

However, I tried with other domain names (eg. .abb or .loc) and the error persists. I' m working with UniServerZ on Windows7 and Chrome explains the "ERR_ICANN_NAME_COLLISION" error roughly as "this website uses new top level domain name. Contact your network administrator if it used to work". It indeed used to work with .dev domains.

Now, trying to google ERR_ICANN_NAME_COLLISION brings very few results and I have no network administrator to contact. 🙂

The question is: is this me and possibly my hosts/vhosts settings or the world's fault? What local domain names should be good now to use for a local dev server?

Best Answer

The pseudo domain name(s) you are using are being registered as a new top level domain.

The DNS returns 127.0.53.53 which is a signal that this TLD is being registered by someone. Chrome versions from M43 have a this new way of relaying the error message to the user.

Use a domain name you own. Possibly using the full name like "localhost.dev.$yourdomain" could help you here depending on your setup.

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