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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 Brazil
1,547 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2804:e38::/32 | 4.3B × /64 | LACNIC |  BR | 18th Jun 2013 |
| 2804:e44::/32 | 4.3B × /64 | LACNIC | BR | 19th Jun 2013 |
| 2804:e78::/32 | 4.3B × /64 | LACNIC | BR | 26th Jun 2013 |
| 2804:e98::/32 | 4.3B × /64 | LACNIC | BR | 2nd Jul 2013 |
| 2804:e9c::/32 | 4.3B × /64 | LACNIC | BR | 2nd Jul 2013 |
| 2804:ea4::/32 | 4.3B × /64 | LACNIC | BR | 5th Jul 2013 |
| 2804:ed0::/32 | 4.3B × /64 | LACNIC | BR | 15th Jul 2013 |
| 2804:f48::/32 | 4.3B × /64 | LACNIC | BR | 12th Aug 2013 |
| 2804:f98::/32 | 4.3B × /64 | LACNIC | BR | 22nd Aug 2013 |
| 2804:fb8::/32 | 4.3B × /64 | LACNIC | BR | 29th Aug 2013 |
| 2804:fc4::/32 | 4.3B × /64 | LACNIC | BR | 30th Aug 2013 |
| 45.161.152.0/22 | 1k | LACNIC | BR | 22nd Aug 2018 |
| 45.161.210.0/23 | 512 | LACNIC | BR | 28th Aug 2018 |
| 45.162.127.0/24 | 256 | LACNIC | BR | 9th Oct 2018 |
| 45.164.206.0/24 | 256 | LACNIC | BR | 24th Mar 2023 |
| 45.166.120.0/22 | 1k | LACNIC | BR | 13th Nov 2018 |
| 45.168.81.0/24 | 256 | LACNIC | BR | 3rd Dec 2018 |
| 45.169.182.0/23 | 512 | LACNIC | BR | 21st Jan 2019 |
| 45.170.136.0/24 | 256 | LACNIC | BR | 28th Jan 2019 |
| 45.174.16.0/22 | 1k | LACNIC | BR | 18th Apr 2019 |
| 45.175.240.0/22 | 1k | LACNIC | BR | 13th May 2019 |
| 45.178.216.0/22 | 1k | LACNIC | BR | 19th Jun 2019 |
| 45.178.32.0/22 | 1k | LACNIC | BR | 4th Jun 2019 |
| 45.179.199.0/24 | 256 | LACNIC | BR | 1st Jul 2019 |
| 45.182.64.0/22 | 1k | LACNIC | BR | 12th Aug 2019 |
| 45.184.144.0/22 | 1k | LACNIC | BR | 10th Sept 2019 |
| 45.185.149.0/24 | 256 | LACNIC | BR | 22nd Oct 2019 |
| 45.186.143.0/24 | 256 | LACNIC | BR | 12th Nov 2019 |
| 45.188.59.0/24 | 256 | LACNIC | BR | 12th Nov 2019 |
| 45.225.32.0/22 | 1k | LACNIC | BR | 18th Oct 2017 |
| 45.227.0.0/22 | 1k | LACNIC | BR | 9th Nov 2017 |
| 45.228.212.0/22 | 1k | LACNIC | BR | 20th Dec 2017 |
| 45.230.52.0/22 | 1k | LACNIC | BR | 29th Jan 2018 |
| 45.233.238.0/23 | 512 | LACNIC | BR | 29th Mar 2018 |
| 45.235.126.0/23 | 512 | LACNIC | BR | 25th Apr 2018 |
| 45.236.60.0/22 | 1k | LACNIC | BR | 9th May 2018 |
| 45.237.204.0/22 | 1k | LACNIC | BR | 7th Jun 2018 |
| 45.239.106.0/24 | 256 | LACNIC | BR | 29th Aug 2018 |
| 45.239.200.0/22 | 1k | LACNIC | BR | 22nd Aug 2018 |
| 45.6.52.0/22 | 1k | LACNIC | BR | 28th Mar 2017 |
| 45.68.112.0/24 | 256 | LACNIC | BR | 3rd Dec 2025 |
| 45.68.72.0/22 | 1k | LACNIC | BR | 25th Jun 2024 |
| 45.68.76.0/22 | 1k | LACNIC | BR | 25th Jun 2024 |
| 45.68.80.0/22 | 1k | LACNIC | BR | 25th Jun 2024 |
| 45.68.84.0/22 | 1k | LACNIC | BR | 25th Jun 2024 |
| 45.68.92.0/23 | 512 | LACNIC | BR | 6th Nov 2024 |
| 86.111.54.0/23 | 512 | LACNIC | BR | 28th Jun 2022 |