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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 Jamaica
16 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 142.0.224.0/20 | 4.1k | ARIN |  JM | 8th Jan 2024 |
| 192.30.203.0/24 | 256 | ARIN | JM | 1st Jul 2026 |
| 196.1.136.0/24 | 256 | ARIN | JM | 24th Aug 1994 |
| 196.3.104.0/24 | 256 | ARIN | JM | 10th May 1995 |
| 196.3.153.0/24 | 256 | ARIN | JM | 31st Aug 1995 |
| 196.32.0.0/21 | 2k | ARIN | JM | 2nd Oct 1995 |
| 2001:504:3e::/48 | 65.5k × /64 | ARIN | JM | 11th Jul 2014 |
| 206.41.107.0/24 | 256 | ARIN | JM | 11th Jul 2014 |
| 2600:1b00::/24 | 1.1T × /64 | ARIN | JM | 5th Jun 2014 |
| 2602:81d:5000::/44 | 1M × /64 | ARIN | JM | 12th Mar 2026 |
| 2602:fc86::/36 | 268M × /64 | ARIN | JM | 23rd Apr 2021 |
| 2604:c9c0::/32 | 4.3B × /64 | ARIN | JM | 3rd May 2018 |
| 2605:5900::/32 | 4.3B × /64 | ARIN | JM | 30th Jun 2011 |
| 2606:c500::/32 | 4.3B × /64 | ARIN | JM | 8th Jan 2024 |
| 2620:59:6000::/48 | 65.5k × /64 | ARIN | JM | 24th Sept 2018 |
| 66.71.196.0/23 | 512 | ARIN | JM | 21st Feb 2025 |