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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
1,566 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 200.10.183.0/24 | 256 | LACNIC |  BR | 18th Nov 2015 |
| 200.12.139.0/24 | 256 | LACNIC | BR | 18th Feb 2016 |
| 200.128.192.0/19 | 8.2k | LACNIC | BR | 15th Feb 2000 |
| 200.128.224.0/20 | 4.1k | LACNIC | BR | 15th Feb 2000 |
| 200.154.0.0/16 | 65.5k | LACNIC | BR | 28th Aug 2001 |
| 200.169.80.0/20 | 4.1k | LACNIC | BR | 18th Jun 2001 |
| 200.170.0.0/18 | 16.4k | LACNIC | BR | 20th Apr 2001 |
| 200.18.20.0/22 | 1k | LACNIC | BR | 16th Feb 2000 |
| 200.18.224.0/20 | 4.1k | LACNIC | BR | 16th Feb 2000 |
| 200.18.24.0/21 | 2k | LACNIC | BR | 16th Feb 2000 |
| 200.187.96.0/22 | 1k | LACNIC | BR | 7th May 2020 |
| 200.188.192.0/20 | 4.1k | LACNIC | BR | 1st Mar 2001 |
| 200.189.42.0/23 | 512 | LACNIC | BR | 29th Apr 2014 |
| 200.19.8.0/21 | 2k | LACNIC | BR | 16th Feb 2000 |
| 200.192.108.0/22 | 1k | LACNIC | BR | 19th Nov 2009 |
| 200.192.176.0/20 | 4.1k | LACNIC | BR | 12th Nov 1999 |
| 200.192.192.0/20 | 4.1k | LACNIC | BR | 19th Jul 2000 |
| 200.192.234.0/24 | 256 | LACNIC | BR | 6th Aug 2015 |
| 200.192.235.0/24 | 256 | LACNIC | BR | 6th Aug 2015 |
| 200.196.96.0/19 | 8.2k | LACNIC | BR | 25th Jan 2001 |
| 200.200.0.0/16 | 65.5k | LACNIC | BR | 17th Nov 1999 |
| 200.215.192.0/20 | 4.1k | LACNIC | BR | 18th Nov 1999 |
| 200.218.32.0/19 | 8.2k | LACNIC | BR | 20th Apr 2001 |
| 200.218.64.0/18 | 16.4k | LACNIC | BR | 6th Aug 2001 |
| 200.219.130.0/23 | 512 | LACNIC | BR | 30th Jul 2004 |
| 200.219.138.0/23 | 512 | LACNIC | BR | 20th Oct 2005 |
| 200.219.140.0/23 | 512 | LACNIC | BR | 20th Oct 2005 |
| 200.219.143.0/24 | 256 | LACNIC | BR | 20th Oct 2005 |
| 200.219.144.0/22 | 1k | LACNIC | BR | 13th Jun 2007 |
| 200.219.156.0/23 | 512 | LACNIC | BR | 29th Apr 2014 |
| 200.229.113.0/24 | 256 | LACNIC | BR | 27th Jul 2000 |
| 200.229.116.0/22 | 1k | LACNIC | BR | 27th Jul 2000 |
| 200.229.120.0/21 | 2k | LACNIC | BR | 27th Jul 2000 |
| 200.23.255.0/24 | 256 | LACNIC | BR | 22nd Aug 2016 |
| 200.234.8.0/21 | 2k | LACNIC | BR | 16th Oct 2003 |
| 200.3.114.0/24 | 256 | LACNIC | BR | 11th Jun 2026 |
| 200.5.9.0/24 | 256 | LACNIC | BR | 19th May 2015 |
| 200.50.195.0/24 | 256 | LACNIC | BR | 4th Mar 2020 |
| 200.6.84.0/22 | 1k | LACNIC | BR | 19th May 2020 |
| 200.9.0.0/23 | 512 | LACNIC | BR | 1st Jun 2015 |
| 200.9.144.0/24 | 256 | LACNIC | BR | 7th Feb 2022 |
| 200.9.199.0/24 | 256 | LACNIC | BR | 9th Dec 1993 |
| 200.9.66.0/24 | 256 | LACNIC | BR | 7th Apr 1993 |
| 2001:12a4::/32 | 4.3B × /64 | LACNIC | BR | 27th Jun 2008 |
| 2001:12c0::/32 | 4.3B × /64 | LACNIC | BR | 31st Oct 2008 |
| 2001:12c8::/32 | 4.3B × /64 | LACNIC | BR | 19th Dec 2007 |
| 2001:12f8::/48 | 65.5k × /64 | LACNIC | BR | 19th Dec 2007 |
| 201.157.218.0/24 | 256 | LACNIC | BR | 4th Jun 2014 |
| 201.157.248.0/23 | 512 | LACNIC | BR | 4th Jun 2014 |
| 201.157.250.0/24 | 256 | LACNIC | BR | 4th Jun 2014 |