IP Addresses Through 2025 - American Registry for Internet Numbers
"But while the Internet has grown at amazing speeds across the ensuing 33 years, the deployment of IPv6 has proceeded at a more measured pace. There is still no evidence of any common sense of urgency about the deployment of IPv6 in the public Internet, and still there is no common agreement that the continued reliance on IPv4 is failing us."
Geoff Huston's blog post discusses the state of IPv4 and IPv6 address allocation and usage in 2025. IPv4 address allocation has contracted, with a 0.01% decrease in allocated addresses, while IPv6 allocation has decreased by 80%. IPv6 deployment has increased, particularly in China, but overall growth has slowed. The IPv4 transfer market shows a decline in prices, indicating a surplus of supply over demand. The IPv6 address space remains vast, but concerns about equity in address distribution persist. The transition to IPv6 is ongoing, but the pace is uncertain, with many service providers still relying on NATs to manage IPv4 address scarcity.
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