IPv6 carried half of internet traffic — for one day, Google says

What Google reported

It has been reported that on March 28th IPv6 handled 50.1 percent of the traffic Google observed to its services, up from 46.33 percent a year earlier. Google's public IPv6 statistics show a slow climb and several days in the last year where the figure nudged above 49.5 percent, so this isn’t a blip on a graph — but it was a one‑day peak. Google’s visibility is hard to beat: google.com and YouTube are two of the world’s busiest sites, so their telemetry is widely watched as a de facto barometer of protocol uptake.

Not the whole picture

Before popping the champagne, pause. Cloudflare’s Radar reports IPv6 as the source of 40.1 percent of HTTP requests, and APNIC Labs finds about 43.13 percent of networks it sees are IPv6‑capable. So Google’s number is notable — and nice — but not solid proof that IPv6 has become the default for the whole internet. Is this a watershed or a weather event? The sensible answer: somewhere in between.

Why adoption has lagged

The irony is delicious. IPv6 was designed to solve the IPv4 scarcity problem with a 128‑bit address space — 340 undecillion addresses, enough to give an IP to every toaster, treehouse, and future Martian colony. Yet adoption sputtered. Two big reasons: IPv6 didn’t add many flashy features to tempt operators, and network address translation (NAT) let people squeeze more life from IPv4 addresses instead of rebuilding stacks on IPv6. Paint dries slower than you might think.

Regional wins and the takeaway

Some regions crossed the 50 percent mark years ago — APNIC’s Asia‑Pacific region passed it in 2025, and parts of the ARIN region hit the milestone earlier — which shows the uneven, political nature of address allocation and deployment. This single‑day 50.1 percent is a milestone worth noting. It’s not the finish line. But it is a little proof that the long, slow nudge toward IPv6 may finally be starting to pay off.

Sources: The Register