The internet is running out of "phone numbers". A new format (IPv6) was invented years ago, but is only slowly being deployed.
YellowBot is participating in World IPv6 Day on June 8th (UTC; so starting Tuesday afternoon in the U.S.). For 24 hours hundreds of sites, including Facebook and Google, will enable the IPv6 protocol to help test the readiness of the networks, from the backbone networks connecting everyone to the home wifi networks in peoples homes.
Most likely you won't notice any difference, but if you have trouble connecting - please try Google's test page or read their help article.
