"Their Internet usage is growing very rapidly, and even they can do the math: If everyone in China needed an IPv4 address - just one - this country would use up one third of the entire public IP address space"
About this Quote
Context matters. IPv4’s 32-bit address space was engineered for a networked future that, at the time, didn’t include China’s population connected at mass-market speed. Cerf is invoking China as the most persuasive stress test because it makes the limitation feel inevitable, not hypothetical. “Just one” is the killer phrase: it strips away edge cases, NAT workarounds, and corporate network tricks, forcing you to confront the basic mismatch between human scale and legacy protocol design.
The intent is advocacy by understatement: a creator of the internet pointing out that technical debt becomes cultural debt. If addresses are scarce, someone rations them; if someone rations them, power enters the protocol. The quote nudges you toward IPv6 without saying “IPv6,” and toward seeing internet architecture as destiny unless redesigned.
Quote Details
| Topic | Internet |
|---|---|
| Source | Help us find the source |
| Cite |
Citation Formats
APA Style (7th ed.)
Cerf, Vinton. (2026, January 18). Their Internet usage is growing very rapidly, and even they can do the math: If everyone in China needed an IPv4 address - just one - this country would use up one third of the entire public IP address space. FixQuotes. https://fixquotes.com/quotes/their-internet-usage-is-growing-very-rapidly-and-9706/
Chicago Style
Cerf, Vinton. "Their Internet usage is growing very rapidly, and even they can do the math: If everyone in China needed an IPv4 address - just one - this country would use up one third of the entire public IP address space." FixQuotes. January 18, 2026. https://fixquotes.com/quotes/their-internet-usage-is-growing-very-rapidly-and-9706/.
MLA Style (9th ed.)
"Their Internet usage is growing very rapidly, and even they can do the math: If everyone in China needed an IPv4 address - just one - this country would use up one third of the entire public IP address space." FixQuotes, 18 Jan. 2026, https://fixquotes.com/quotes/their-internet-usage-is-growing-very-rapidly-and-9706/. Accessed 12 Feb. 2026.



