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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 LACNIC, largest first.
Unannounced blocks in Cuba
6 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 196.1.112.0/24 | 256 | LACNIC |  CU | 26th Jul 1994 |
| 196.1.135.0/24 | 256 | LACNIC | CU | 19th Jul 1994 |
| 196.3.152.0/24 | 256 | LACNIC | CU | 29th Aug 1995 |
| 2800:230::/32 | 4.3B × /64 | LACNIC | CU | 4th Jun 2008 |
| 2800:360::/32 | 4.3B × /64 | LACNIC | CU | 29th May 2009 |
| 2800:910::/32 | 4.3B × /64 | LACNIC | CU | 21st Jun 2011 |