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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 Costa Rica
69 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2803:aa80::/32 | 4.3B × /64 | LACNIC |  CR | 11th Mar 2014 |
| 2803:ae20::/32 | 4.3B × /64 | LACNIC | CR | 14th Nov 2017 |
| 2803:b560::/32 | 4.3B × /64 | LACNIC | CR | 28th Aug 2019 |
| 2803:c50::/32 | 4.3B × /64 | LACNIC | CR | 30th Nov 2023 |
| 2803:c940::/32 | 4.3B × /64 | LACNIC | CR | 23rd Nov 2015 |
| 2803:d020::/32 | 4.3B × /64 | LACNIC | CR | 18th Aug 2017 |
| 2803:d880::/32 | 4.3B × /64 | LACNIC | CR | 16th Oct 2013 |
| 2803:d9d0::/32 | 4.3B × /64 | LACNIC | CR | 2nd Jul 2025 |
| 2803:daa0::/32 | 4.3B × /64 | LACNIC | CR | 2nd Aug 2018 |
| 2803:dcc0::/32 | 4.3B × /64 | LACNIC | CR | 28th Nov 2016 |
| 2803:e300::/32 | 4.3B × /64 | LACNIC | CR | 5th Apr 2013 |
| 2803:eac0::/32 | 4.3B × /64 | LACNIC | CR | 24th Jan 2017 |
| 2803:ee40::/32 | 4.3B × /64 | LACNIC | CR | 9th Oct 2015 |
| 2803:f150::/32 | 4.3B × /64 | LACNIC | CR | 17th May 2024 |
| 2803:f600::/32 | 4.3B × /64 | LACNIC | CR | 3rd Sept 2012 |
| 2803:f8e0::/32 | 4.3B × /64 | LACNIC | CR | 23rd Dec 2019 |
| 2803:fb40::/32 | 4.3B × /64 | LACNIC | CR | 9th Jun 2016 |
| 2803:fe40::/32 | 4.3B × /64 | LACNIC | CR | 16th Oct 2015 |
| 45.185.43.0/24 | 256 | LACNIC | CR | 23rd Sept 2019 |