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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
84,954 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 103.32.176.0/22 | 1k | APNIC |  CN | 15th Aug 2014 |
| 103.32.180.0/22 | 1k | APNIC | CN | 15th Aug 2014 |
| 103.32.184.0/22 | 1k | APNIC | CN | 15th Aug 2014 |
| 103.32.188.0/22 | 1k | APNIC | CN | 15th Aug 2014 |
| 103.32.192.0/22 | 1k | APNIC | CN | 15th Aug 2014 |
| 103.32.196.0/22 | 1k | APNIC | CN | 15th Aug 2014 |
| 103.32.20.0/22 | 1k | APNIC | CN | 12th Aug 2014 |
| 103.32.200.0/22 | 1k | APNIC | CN | 15th Aug 2014 |
| 103.32.204.0/22 | 1k | APNIC | CN | 15th Aug 2014 |
| 103.32.208.0/22 | 1k | APNIC | CN | 15th Aug 2014 |
| 103.32.212.0/22 | 1k | APNIC | CN | 15th Aug 2014 |
| 103.32.216.0/22 | 1k | APNIC | CN | 15th Aug 2014 |
| 103.32.220.0/22 | 1k | APNIC | CN | 15th Aug 2014 |
| 103.32.224.0/22 | 1k | APNIC | CN | 15th Aug 2014 |
| 103.32.228.0/22 | 1k | APNIC | CN | 15th Aug 2014 |
| 103.32.232.0/22 | 1k | APNIC | CN | 15th Aug 2014 |
| 103.32.236.0/22 | 1k | APNIC | CN | 15th Aug 2014 |
| 103.32.24.0/22 | 1k | APNIC | CN | 12th Aug 2014 |
| 103.32.240.0/22 | 1k | APNIC | CN | 15th Aug 2014 |
| 103.32.244.0/22 | 1k | APNIC | CN | 15th Aug 2014 |
| 103.32.248.0/22 | 1k | APNIC | CN | 15th Aug 2014 |
| 103.32.252.0/22 | 1k | APNIC | CN | 15th Aug 2014 |
| 103.32.28.0/22 | 1k | APNIC | CN | 12th Aug 2014 |
| 103.32.32.0/22 | 1k | APNIC | CN | 12th Aug 2014 |
| 103.32.36.0/22 | 1k | APNIC | CN | 12th Aug 2014 |
| 103.32.4.0/22 | 1k | APNIC | CN | 12th Aug 2014 |
| 103.32.40.0/22 | 1k | APNIC | CN | 12th Aug 2014 |
| 103.32.44.0/22 | 1k | APNIC | CN | 12th Aug 2014 |
| 103.32.48.0/22 | 1k | APNIC | CN | 12th Aug 2014 |
| 103.32.52.0/22 | 1k | APNIC | CN | 12th Aug 2014 |
| 103.32.56.0/22 | 1k | APNIC | CN | 12th Aug 2014 |
| 103.32.60.0/22 | 1k | APNIC | CN | 12th Aug 2014 |
| 103.32.64.0/22 | 1k | APNIC | CN | 12th Aug 2014 |
| 103.32.68.0/22 | 1k | APNIC | CN | 12th Aug 2014 |
| 103.32.72.0/22 | 1k | APNIC | CN | 12th Aug 2014 |
| 103.32.76.0/22 | 1k | APNIC | CN | 12th Aug 2014 |
| 103.32.8.0/22 | 1k | APNIC | CN | 12th Aug 2014 |
| 103.32.80.0/22 | 1k | APNIC | CN | 14th Aug 2014 |
| 103.32.84.0/22 | 1k | APNIC | CN | 14th Aug 2014 |
| 103.32.88.0/22 | 1k | APNIC | CN | 14th Aug 2014 |
| 103.32.92.0/22 | 1k | APNIC | CN | 14th Aug 2014 |
| 103.32.96.0/22 | 1k | APNIC | CN | 14th Aug 2014 |
| 103.33.0.0/22 | 1k | APNIC | CN | 15th Aug 2014 |
| 103.33.100.0/22 | 1k | APNIC | CN | 19th Aug 2014 |
| 103.33.104.0/22 | 1k | APNIC | CN | 19th Aug 2014 |
| 103.33.108.0/22 | 1k | APNIC | CN | 19th Aug 2014 |
| 103.33.112.0/22 | 1k | APNIC | CN | 19th Aug 2014 |
| 103.33.116.0/22 | 1k | APNIC | CN | 19th Aug 2014 |
| 103.33.12.0/22 | 1k | APNIC | CN | 15th Aug 2014 |
| 103.33.120.0/22 | 1k | APNIC | CN | 19th Aug 2014 |