Which of these two countries holds more IPv4 addresses? Answer, and the streak grows; get it wrong and it resets. There is no end to the game — every round is a fresh pair.
Then press Networks and the same two countries can come out the other way round. A country may hold one enormous block or thousands of small ones, and “how much address space” is not the same question as “how many announcements”. That contrast is the lesson this game is built to show.
Both are real delegation totals from the five RIR statistics files. One of them is bigger by at least 2% — no coin tosses here. Keys 1 and 2 choose a side.
Pick the country with the larger number.
Streak 0 Best today 0
IPv4 addresses — how many IPv4 addresses the country's delegations cover in the five Regional Internet Registry statistics files. The world's allocated IPv4 comes to 3,687,618,208 addresses across 239 countries and territories, and every share on this page is measured against exactly that total.
Networks — how many separate delegation records the country holds in those same files: 262,197 of them worldwide. This is not the same thing as size. A registry can hand a country a single /8 block — 16,777,216 addresses in one allocation — or ten thousand /22s of about a thousand addresses each. The first country wins on addresses and loses badly on networks. That is why the mode switch above can turn a confident answer into a wrong one.
Why they disagree — address space and the number of announcements are two different measures of “how much internet” a country has. Addresses are the capacity; networks are the number of separate blocks that capacity is cut into, which is closer to how many distinct operators, institutions or allocations had to be managed. The United States, for instance, holds by far the most addresses and also the most networks of any country — but plenty of middle-sized countries out-announce much larger ones.
Where the numbers come from — RIR delegated-extended statistics — RIPE NCC, ARIN, APNIC, LACNIC and AFRINIC. The five
delegated-extended files were fetched once, at development time, and the
per-country totals were frozen into this site's own copy
(/data/higher-countries.json, generated 2026-10-16). Nothing is
fetched when you load this page: the first round is rendered on the server from
that file, and every round after it is chosen in your browser from the same
file.
Two different countries, each with at least one real allocation, and at least a 2% gap between them on both numbers — so no round is a coin toss, in either mode. A pair is never repeated inside one session, and a country is not offered again in the very next round.
The tool behind this mechanic: IPv4 blocks by country
The daily IP puzzle guesses a country from its address; the daily network puzzle guesses the operator. Ping Detective hides a mystery address behind five latency rings. The network tools and the ad and analytics checker are here too.