Google’s global measurement of IPv6 adoption crossed 50% for the first time on April 23, 2026, marking a symbolic threshold for a protocol that was standardized in 1998 and has taken nearly three decades to reach parity with its predecessor.
The milestone, published on the APNIC Blog, represents Google’s own measurement of IPv6 capability across its user base. APNIC Labs’ parallel measurement, which uses a different statistical weighting methodology, recorded 42% worldwide IPv6 capability on the same date. The gap between the two figures brackets the likely range of actual global adoption.
“Reaching the 50% mark is a significant milestone, demonstrating that IPv6 is a mature, fully capable protocol that is being deployed at a global scale,” wrote George Michaelson of APNIC Labs.
APNIC measures IPv6 capability through online advertising distributed via Google Ads, then applies statistical weighting using World Bank Internet user population estimates per economy. This means large countries like India, China, and Indonesia contribute proportionally more to the global result. Google’s raw measurement reflects its own user base without the same population weighting.
At the individual country level, both datasets align closely with measurements from Cloudflare, Akamai, and Cisco. The variance is almost entirely in the global aggregation model.
A two-protocol world
The internet now operates on a mix of direct IPv4, carrier-grade NAT, and IPv6. Claims that “IPv4 is working fine” ignore the substantial operational complexity that NAT and CGNAT have already introduced, the researchers note. Major content providers including Cloudflare, Meta, Google, and Akamai are fully dual-stack. IPv6 adoption is not evenly distributed: India, Vietnam, and Saudi Arabia show markedly different curves from the global average.
Notably, Google’s statistics exclude China, where considerable IPv6 deployment is underway. One commenter on the APNIC post estimated that including China would push real global adoption to between 65% and 75%.
The long road
IPv6 deployment requires substantial capital investment, and incumbents have been slow to move off IPv4 as long as their existing infrastructure remains profitable. New entrants, particularly mobile-first deployments like Reliance Jio in India, find IPv6 reduces total cost of ownership and have driven some of the fastest adoption curves globally.
At the current linear rate of roughly 10 percentage points per three years, full IPv6 dominance is still a decade away. But the protocol has crossed from experimental to operational: it is no longer a question of whether the internet will run on IPv6, but when the last IPv4-only services will finally migrate.
Sources: Google hits 50% IPv6 (APNIC Blog, April 28, 2026).