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I'm not sure if it's still in use but iPhones used to hit http://www.apple.com/library/test/success.html to test connectivity.

I used to use it to test connectivity on my own apps because Apple is probably better at making sure a url reachable than I am.



I believe they hit http://captive.apple.com now (and that's what I use).


They use more than that, I've seen it on the wire (to prevent DNS caching I believe).

http://neverssl.com also works

And https://1.1.1.1 breaks people's brains if they know enough


Even more fun: https://16843009


And there's https://1.1


Did they actually issue the certificate for that??


No, your browser converts it before access


I prefer https://1.1.257


I like

http://uz


Whenever I access a public Wi-Fi with login / captive portal, and the portal doesn’t show up immediately, I enter captive.apple.com in Safari to trigger it! Works every time (iPhone)


I use example.com :) Less typing.


For french speaking gals/guys, there's http://perdu.com too (lost.com basically)


http://example.com is also good.


Same for Android which always call to Google everytime device connect to WiFi. At least you can change captive portal via ADB, I'm not sure if iOS let you do that too.




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