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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 196.11.59.0/24 | 256 | AFRINIC |  ZA | 10th Jul 1994 |
| 196.11.60.0/24 | 256 | AFRINIC | ZA | 10th Jul 1994 |
| 196.11.61.0/24 | 256 | AFRINIC | ZA | 10th Jul 1994 |
| 196.11.74.0/24 | 256 | AFRINIC | ZA | 10th Jul 1994 |
| 196.11.91.0/24 | 256 | AFRINIC | ZA | 10th Jul 1994 |
| 196.11.92.0/22 | 1k | AFRINIC | ZA | 10th Jul 1994 |
| 196.11.96.0/23 | 512 | AFRINIC | ZA | 10th Jul 1994 |
| 196.11.99.0/24 | 256 | AFRINIC | ZA | 10th Jul 1994 |
| 196.12.64.0/18 | 16.4k | ARIN |  BM | 11th Jul 1994 |
| 196.13.1.0/24 | 256 | AFRINIC | ZA | 11th Jul 1994 |
| 196.13.100.0/24 | 256 | AFRINIC | ZA | 21st Jul 1994 |
| 196.13.103.0/24 | 256 | AFRINIC |  NG | 29th Oct 2014 |
| 196.13.114.0/24 | 256 | AFRINIC | ZA | 9th Nov 1994 |
| 196.13.120.0/24 | 256 | AFRINIC | ZA | 9th Nov 1994 |
| 196.13.124.0/24 | 256 | AFRINIC | ZA | 27th Mar 2015 |
| 196.13.134.0/23 | 512 | AFRINIC | ZA | 30th Apr 2012 |
| 196.13.148.0/24 | 256 | AFRINIC | ZA | 9th Nov 1994 |
| 196.13.149.0/24 | 256 | AFRINIC | ZA | 9th Nov 1994 |
| 196.13.16.0/21 | 2k | AFRINIC | ZA | 11th Jul 1994 |
| 196.13.162.0/24 | 256 | AFRINIC | ZA | 9th Nov 1994 |
| 196.13.166.0/23 | 512 | AFRINIC | ZA | 9th Nov 1994 |
| 196.13.168.0/24 | 256 | AFRINIC |  SZ | 9th Nov 1994 |
| 196.13.170.0/23 | 512 | AFRINIC | ZA | 9th Nov 1994 |
| 196.13.172.0/24 | 256 | AFRINIC | ZA | 9th Nov 1994 |
| 196.13.173.0/24 | 256 | AFRINIC |  KE | 19th Sept 2014 |
| 196.13.184.0/24 | 256 | AFRINIC | ZA | 28th Jun 2001 |
| 196.13.191.0/24 | 256 | AFRINIC |  CI | 28th Feb 2020 |
| 196.13.2.0/23 | 512 | AFRINIC | ZA | 11th Jul 1994 |
| 196.13.205.0/24 | 256 | AFRINIC | ZA | 18th Jan 1996 |
| 196.13.206.0/24 | 256 | AFRINIC |  EG | 6th Apr 2015 |
| 196.13.210.0/24 | 256 | AFRINIC | ZA | 6th Dec 1994 |
| 196.13.211.0/24 | 256 | AFRINIC | ZA | 6th Dec 1994 |
| 196.13.212.0/24 | 256 | AFRINIC | ZA | 6th Dec 1994 |
| 196.13.218.0/23 | 512 | AFRINIC | ZA | 6th Dec 1994 |
| 196.13.221.0/24 | 256 | AFRINIC | ZA | 6th Dec 1994 |
| 196.13.222.0/24 | 256 | AFRINIC | ZA | 6th Dec 1994 |
| 196.13.224.0/24 | 256 | AFRINIC | ZA | 9th Nov 1994 |
| 196.13.233.0/24 | 256 | AFRINIC | ZA | 18th Jan 1996 |
| 196.13.234.0/23 | 512 | AFRINIC | ZA | 18th Jan 1996 |
| 196.13.236.0/23 | 512 | AFRINIC | ZA | 18th Jan 1996 |
| 196.13.238.0/24 | 256 | AFRINIC | ZA | 18th Jan 1996 |
| 196.13.239.0/24 | 256 | AFRINIC | ZA | 18th Jan 1996 |
| 196.13.24.0/22 | 1k | AFRINIC | ZA | 11th Jul 1994 |
| 196.13.242.0/24 | 256 | AFRINIC | NG | 23rd Feb 2015 |
| 196.13.246.0/24 | 256 | AFRINIC | ZA | 18th Jan 1996 |
| 196.13.247.0/24 | 256 | AFRINIC | ZA | 18th Jan 1996 |
| 196.13.248.0/24 | 256 | AFRINIC | ZA | 18th Jan 1996 |
| 196.13.249.0/24 | 256 | AFRINIC | ZA | 18th Jan 1996 |
| 196.13.250.0/24 | 256 | AFRINIC | ZA | 18th Jan 1996 |
| 196.13.28.0/23 | 512 | AFRINIC | ZA | 11th Jul 1994 |