Allocated but unannounced space
Every block here was allocated or assigned by a regional internet registry, and none of them appeared in any routing table we collected at our last snapshot — neither as a route of their own, nor covered by a larger announcement, nor carved up into more specifics.
“Unannounced” does not mean “unused”
Plenty of allocated space is deliberately kept off the public internet: private interconnects, lab and lawful-intercept ranges, networks reachable only inside one operator, and space held in reserve. Some of it is announced somewhere our collectors cannot see, which is a limit of our vantage points rather than a fact about the block.
It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today. Nothing on this page means a block is unallocated, available, or free to announce.
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Countries with unannounced space registered through ARIN, largest first.
Unannounced blocks in Cayman Islands
5 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 149.112.19.0/24 | 256 | ARIN |  KY | 22nd Apr 2021 |
| 207.211.224.0/21 | 2k | ARIN | KY | 23rd Jan 2025 |
| 216.25.44.0/22 | 1k | ARIN | KY | 16th Dec 2024 |
| 2604:1780::/32 | 4.3B × /64 | ARIN | KY | 6th Sept 2012 |
| 2606:b200::/32 | 4.3B × /64 | ARIN | KY | 14th Feb 2011 |