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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 196.10.202.0/24 | 256 | AFRINIC |  ZA | 25th Mar 1994 |
| 196.10.225.0/24 | 256 | AFRINIC | ZA | 10th Jul 1994 |
| 196.10.226.0/24 | 256 | AFRINIC | ZA | 25th Mar 1994 |
| 196.10.227.0/24 | 256 | AFRINIC | ZA | 25th Mar 1994 |
| 196.10.230.0/24 | 256 | AFRINIC | ZA | 10th Jul 1994 |
| 196.10.232.0/22 | 1k | AFRINIC | ZA | 25th Mar 1994 |
| 196.10.236.0/22 | 1k | AFRINIC | ZA | 25th Mar 1994 |
| 196.10.240.0/22 | 1k | AFRINIC | ZA | 25th Mar 1994 |
| 196.10.244.0/23 | 512 | AFRINIC | ZA | 25th Mar 1994 |
| 196.10.246.0/23 | 512 | AFRINIC | ZA | 10th Jul 1994 |
| 196.10.250.0/24 | 256 | AFRINIC | ZA | 10th Jul 1994 |
| 196.10.251.0/24 | 256 | AFRINIC |  CI | 28th Feb 2020 |
| 196.10.61.0/24 | 256 | AFRINIC | ZA | 25th Mar 1994 |
| 196.10.62.0/23 | 512 | AFRINIC | ZA | 25th Mar 1994 |
| 196.10.96.0/24 | 256 | AFRINIC | ZA | 25th Mar 1994 |
| 196.11.100.0/23 | 512 | AFRINIC | ZA | 10th Jul 1994 |
| 196.11.105.0/24 | 256 | AFRINIC | ZA | 10th Jul 1994 |
| 196.11.106.0/23 | 512 | AFRINIC | ZA | 10th Jul 1994 |
| 196.11.108.0/24 | 256 | AFRINIC | ZA | 10th Jul 1994 |
| 196.11.115.0/24 | 256 | AFRINIC | ZA | 10th Jul 1994 |
| 196.11.117.0/24 | 256 | AFRINIC | ZA | 10th Jul 1994 |
| 196.11.118.0/23 | 512 | AFRINIC | ZA | 10th Jul 1994 |
| 196.11.120.0/23 | 512 | AFRINIC | ZA | 10th Jul 1994 |
| 196.11.123.0/24 | 256 | AFRINIC | ZA | 10th Jul 1994 |
| 196.11.124.0/24 | 256 | AFRINIC |  SZ | 24th May 1994 |
| 196.11.144.0/23 | 512 | AFRINIC | ZA | 9th Nov 1994 |
| 196.11.160.0/21 | 2k | AFRINIC | ZA | 10th Jul 1994 |
| 196.11.168.0/23 | 512 | AFRINIC | ZA | 10th Jul 1994 |
| 196.11.198.0/24 | 256 | AFRINIC | ZA | 21st Jul 1994 |
| 196.11.199.0/24 | 256 | AFRINIC | ZA | 9th Nov 1994 |
| 196.11.200.0/24 | 256 | AFRINIC | ZA | 29th Jun 2001 |
| 196.11.201.0/24 | 256 | AFRINIC | ZA | 21st Jul 1994 |
| 196.11.202.0/23 | 512 | AFRINIC | ZA | 21st Jul 1994 |
| 196.11.204.0/24 | 256 | AFRINIC | ZA | 21st Jul 1994 |
| 196.11.208.0/24 | 256 | AFRINIC | ZA | 9th Nov 1994 |
| 196.11.210.0/23 | 512 | AFRINIC | ZA | 9th Nov 1994 |
| 196.11.212.0/24 | 256 | AFRINIC | ZA | 9th Nov 1994 |
| 196.11.213.0/24 | 256 | AFRINIC | ZA | 21st Jul 1994 |
| 196.11.214.0/23 | 512 | AFRINIC | ZA | 21st Jul 1994 |
| 196.11.216.0/22 | 1k | AFRINIC | ZA | 21st Jul 1994 |
| 196.11.220.0/23 | 512 | AFRINIC | ZA | 21st Jul 1994 |
| 196.11.222.0/23 | 512 | AFRINIC | ZA | 21st Jul 1994 |
| 196.11.224.0/22 | 1k | AFRINIC | ZA | 21st Jul 1994 |
| 196.11.228.0/23 | 512 | AFRINIC | ZA | 21st Jul 1994 |
| 196.11.230.0/24 | 256 | AFRINIC | ZA | 21st Jul 1994 |
| 196.11.246.0/24 | 256 | AFRINIC | ZA | 21st Jul 1994 |
| 196.11.247.0/24 | 256 | AFRINIC | ZA | 21st Jul 1994 |
| 196.11.248.0/23 | 512 | AFRINIC | ZA | 21st Jul 1994 |
| 196.11.252.0/23 | 512 | AFRINIC | ZA | 9th Nov 1994 |
| 196.11.254.0/24 | 256 | AFRINIC | ZA | 9th Nov 1994 |