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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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.
Browse by registry
Browse by country
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 |
|---|---|---|---|---|
| 191.128.30.0/23 | 512 | LACNIC |  BR | 17th Mar 2014 |
| 191.128.96.0/20 | 4.1k | LACNIC | BR | 17th Mar 2014 |
| 191.160.32.0/22 | 1k | LACNIC | BR | 24th Oct 2013 |
| 191.215.0.0/19 | 8.2k | LACNIC | BR | 23rd Dec 2013 |
| 191.219.192.0/18 | 16.4k | LACNIC | BR | 11th Dec 2013 |
| 191.223.48.0/20 | 4.1k | LACNIC | BR | 11th Dec 2013 |
| 191.227.134.0/23 | 512 | LACNIC | BR | 4th Sept 2013 |
| 191.227.140.0/23 | 512 | LACNIC | BR | 4th Sept 2013 |
| 191.242.32.0/22 | 1k | LACNIC | BR | 17th Dec 2013 |
| 191.243.80.0/21 | 2k | LACNIC | BR | 23rd Dec 2013 |
| 191.253.128.0/18 | 16.4k | LACNIC | BR | 15th Jan 2014 |
| 191.36.238.0/24 | 256 | LACNIC | BR | 19th Mar 2014 |
| 191.7.6.0/24 | 256 | LACNIC | BR | 13th Feb 2014 |
| 192.100.214.0/23 | 512 | LACNIC | BR | 24th Oct 2025 |
| 192.146.157.0/24 | 256 | LACNIC | BR | 30th Jan 1992 |
| 192.80.209.0/24 | 256 | LACNIC | BR | 23rd May 1990 |
| 198.58.12.0/24 | 256 | LACNIC | BR | 2nd Mar 2015 |
| 200.0.71.0/24 | 256 | LACNIC | BR | 18th Jun 2014 |
| 200.10.183.0/24 | 256 | LACNIC | BR | 18th Nov 2015 |
| 200.12.139.0/24 | 256 | LACNIC | BR | 18th Feb 2016 |
| 200.124.76.0/24 | 256 | LACNIC | BR | 24th Jan 2020 |
| 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 |
| 200.160.224.0/19 | 8.2k | LACNIC | BR | 28th Aug 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 |
| 200.188.192.0/20 | 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 |
| 200.218.64.0/18 | 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 |
| 200.225.64.0/20 | 4.1k | LACNIC | BR | 3rd Jan 2001 |
| 200.229.113.0/24 | 256 | LACNIC | BR | 27th Jul 2000 |
| 200.229.116.0/22 | 1k | LACNIC | BR | 27th Jul 2000 |