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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 the most unannounced blocks, largest first.
Unannounced blocks
85,244 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 196.3.160.0/24 | 256 | AFRINIC |  ZA | 4th Oct 1995 |
| 196.3.180.0/22 | 1k | AFRINIC |  CI | 28th Feb 2020 |
| 196.3.224.0/19 | 8.2k | AFRINIC | ZA | 16th May 1995 |
| 196.3.58.0/23 | 512 | AFRINIC |  KE | 16th Nov 2007 |
| 196.3.64.0/24 | 256 | AFRINIC |  GH | 26th Mar 1993 |
| 196.3.66.0/24 | 256 | RIPE NCC |  SA | 15th Sept 1993 |
| 196.3.67.0/24 | 256 | RIPE NCC |  AE | 29th Sept 1993 |
| 196.3.68.0/22 | 1k | RIPE NCC | AE | 29th Sept 1993 |
| 196.3.72.0/24 | 256 | APNIC |  PK | 3rd Nov 1993 |
| 196.3.73.0/24 | 256 | ARIN |  GD | 2nd Feb 1994 |
| 196.3.90.0/24 | 256 | AFRINIC |  CM | 23rd Sept 1994 |
| 196.3.92.0/23 | 512 | AFRINIC | ZA | 15th Mar 1995 |
| 196.32.0.0/21 | 2k | ARIN |  JM | 2nd Oct 1995 |
| 196.32.112.0/20 | 4.1k | AFRINIC |  ML | 11th Aug 2010 |
| 196.32.160.0/19 | 8.2k | AFRINIC | CI | 28th Feb 2020 |
| 196.32.224.0/23 | 512 | AFRINIC |  NG | 16th Feb 2010 |
| 196.32.228.0/23 | 512 | AFRINIC | CI | 28th Feb 2020 |
| 196.4.112.0/20 | 4.1k | AFRINIC | ZA | 28th Jan 1994 |
| 196.4.150.0/23 | 512 | AFRINIC | ZA | 28th Jan 1994 |
| 196.4.152.0/21 | 2k | AFRINIC | ZA | 28th Jan 1994 |
| 196.4.162.0/24 | 256 | AFRINIC | ZA | 26th Nov 2015 |
| 196.4.166.0/24 | 256 | AFRINIC | ZA | 2nd Feb 1994 |
| 196.4.167.0/24 | 256 | AFRINIC | ZA | 2nd Feb 1994 |
| 196.4.169.0/24 | 256 | AFRINIC | ZA | 2nd Feb 1994 |
| 196.4.170.0/23 | 512 | AFRINIC | ZA | 2nd Feb 1994 |
| 196.4.189.0/24 | 256 | AFRINIC | ZA | 2nd Feb 1994 |
| 196.4.190.0/23 | 512 | AFRINIC | ZA | 11th Feb 1994 |
| 196.4.192.0/21 | 2k | AFRINIC | ZA | 11th Feb 1994 |
| 196.4.20.0/22 | 1k | AFRINIC | ZA | 31st Aug 1993 |
| 196.4.200.0/21 | 2k | AFRINIC | ZA | 11th Feb 1994 |
| 196.4.208.0/22 | 1k | AFRINIC | ZA | 11th Feb 1994 |
| 196.4.24.0/22 | 1k | AFRINIC | ZA | 31st Aug 1993 |
| 196.4.240.0/21 | 2k | AFRINIC | ZA | 11th Feb 1994 |
| 196.4.248.0/24 | 256 | AFRINIC | ZA | 11th Feb 1994 |
| 196.4.249.0/24 | 256 | AFRINIC | ZA | 11th Feb 1994 |
| 196.4.252.0/23 | 512 | AFRINIC | ZA | 11th Feb 1994 |
| 196.4.254.0/24 | 256 | AFRINIC | ZA | 11th Feb 1994 |
| 196.4.28.0/23 | 512 | AFRINIC | ZA | 31st Aug 1993 |
| 196.4.36.0/22 | 1k | AFRINIC | ZA | 28th Jan 1994 |
| 196.4.40.0/22 | 1k | AFRINIC | ZA | 28th Jan 1994 |
| 196.4.44.0/23 | 512 | AFRINIC | ZA | 28th Jan 1994 |
| 196.4.46.0/23 | 512 | ARIN |  US | 28th Jan 1994 |
| 196.4.64.0/22 | 1k | ARIN | US | 28th Jan 1994 |
| 196.4.77.0/24 | 256 | AFRINIC | ZA | 17th Feb 1994 |
| 196.4.78.0/24 | 256 | AFRINIC | ZA | 17th Feb 1994 |
| 196.4.79.0/24 | 256 | AFRINIC | ZA | 17th Feb 1994 |
| 196.4.81.0/24 | 256 | AFRINIC | ZA | 24th Mar 1994 |
| 196.4.82.0/24 | 256 | AFRINIC | ZA | 24th Mar 1994 |
| 196.4.85.0/24 | 256 | AFRINIC | ZA | 24th Mar 1994 |
| 196.4.86.0/24 | 256 | AFRINIC | ZA | 24th Mar 1994 |