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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
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Countries with the most unannounced blocks, largest first.
Unannounced blocks
85,244 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 196.13.30.0/24 | 256 | AFRINIC |  ZA | 11th Jul 1994 |
| 196.13.31.0/24 | 256 | AFRINIC | ZA | 31st Jul 2002 |
| 196.13.4.0/22 | 1k | AFRINIC | ZA | 11th Jul 1994 |
| 196.13.8.0/21 | 2k | AFRINIC | ZA | 11th Jul 1994 |
| 196.13.81.0/24 | 256 | AFRINIC | ZA | 21st Jul 1994 |
| 196.13.82.0/23 | 512 | AFRINIC | ZA | 21st Jul 1994 |
| 196.13.84.0/22 | 1k | AFRINIC | ZA | 21st Jul 1994 |
| 196.15.0.0/21 | 2k | AFRINIC | ZA | 9th Dec 1994 |
| 196.15.64.0/18 | 16.4k | AFRINIC | ZA | 19th Sept 2007 |
| 196.15.8.0/22 | 1k | AFRINIC |  MU | 4th Oct 2005 |
| 196.192.126.0/24 | 256 | AFRINIC |  CI | 28th Feb 2020 |
| 196.192.127.0/24 | 256 | AFRINIC | CI | 28th Feb 2020 |
| 196.192.128.0/21 | 2k | AFRINIC | CI | 28th Feb 2020 |
| 196.192.136.0/22 | 1k | AFRINIC | CI | 28th Feb 2020 |
| 196.2.192.0/19 | 8.2k | AFRINIC |  EG | 16th Nov 2009 |
| 196.2.4.0/22 | 1k | RIPE NCC |  SY | 21st Apr 1993 |
| 196.20.0.0/19 | 8.2k | AFRINIC |  NA | 3rd Jan 1995 |
| 196.200.192.0/20 | 4.1k | AFRINIC |  CD | 30th Sept 2015 |
| 196.200.208.0/20 | 4.1k | AFRINIC | CI | 28th Feb 2020 |
| 196.201.12.0/22 | 1k | AFRINIC | CI | 28th Feb 2020 |
| 196.201.128.0/19 | 8.2k | AFRINIC |  KE | 23rd Sept 2009 |
| 196.201.160.0/19 | 8.2k | AFRINIC | CI | 28th Feb 2020 |
| 196.201.2.0/24 | 256 | AFRINIC |  GH | 25th Feb 2005 |
| 196.201.248.0/21 | 2k | AFRINIC | CI | 28th Feb 2020 |
| 196.216.1.0/24 | 256 | ARIN |  US | 8th Feb 1993 |
| 196.216.171.0/24 | 256 | AFRINIC | CI | 28th Feb 2020 |
| 196.216.184.0/22 | 1k | AFRINIC | CI | 28th Feb 2020 |
| 196.216.204.0/24 | 256 | AFRINIC | CI | 28th Feb 2020 |
| 196.216.214.0/24 | 256 | AFRINIC | CI | 28th Feb 2020 |
| 196.216.236.0/23 | 512 | AFRINIC | ZA | 30th Apr 2012 |
| 196.216.244.0/24 | 256 | AFRINIC | CI | 28th Feb 2020 |
| 196.216.254.0/24 | 256 | AFRINIC | CI | 28th Feb 2020 |
| 196.22.128.0/24 | 256 | AFRINIC | ZA | 10th Feb 1995 |
| 196.22.129.0/24 | 256 | AFRINIC | ZA | 25th Apr 1995 |
| 196.22.130.0/24 | 256 | AFRINIC | EG | 18th Jun 2008 |
| 196.22.16.0/20 | 4.1k | AFRINIC | ZA | 21st Mar 1995 |
| 196.22.4.0/24 | 256 | AFRINIC | ZA | 21st Mar 1995 |
| 196.22.8.0/22 | 1k | AFRINIC | CI | 28th Feb 2020 |
| 196.220.240.0/20 | 4.1k | AFRINIC |  NG | 9th Sept 2010 |
| 196.223.0.0/24 | 256 | AFRINIC | MU | 10th Dec 2005 |
| 196.223.1.0/24 | 256 | AFRINIC |  AO | 5th Jan 2006 |
| 196.223.10.0/24 | 256 | AFRINIC |  SL | 17th Jul 2009 |
| 196.223.11.0/24 | 256 | AFRINIC | CI | 28th Feb 2020 |
| 196.223.15.0/24 | 256 | AFRINIC | ZA | 30th Jul 2010 |
| 196.223.2.0/24 | 256 | AFRINIC |  ZM | 15th Mar 2006 |
| 196.223.20.0/24 | 256 | AFRINIC |  SD | 9th Sept 2010 |
| 196.223.21.0/24 | 256 | AFRINIC | KE | 20th Jun 2016 |
| 196.223.22.0/23 | 512 | AFRINIC | ZA | 4th Mar 2011 |
| 196.223.24.0/24 | 256 | AFRINIC |  LS | 8th Mar 2011 |
| 196.223.25.0/24 | 256 | AFRINIC |  UG | 23rd May 2011 |