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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 in Australia
2,385 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 103.55.176.0/23 | 512 | APNIC |  AU | 22nd Apr 2015 |
| 103.55.32.0/24 | 256 | APNIC | AU | 15th Apr 2015 |
| 103.56.151.0/24 | 256 | APNIC | AU | 5th May 2015 |
| 103.57.89.0/24 | 256 | APNIC | AU | 15th May 2015 |
| 103.57.91.0/24 | 256 | APNIC | AU | 19th May 2015 |
| 103.58.216.0/22 | 1k | APNIC | AU | 29th May 2015 |
| 103.58.220.0/22 | 1k | APNIC | AU | 29th May 2015 |
| 103.61.228.0/23 | 512 | APNIC | AU | 1st Jul 2015 |
| 103.61.40.0/24 | 256 | APNIC | AU | 25th Sept 2022 |
| 103.62.36.0/22 | 1k | APNIC | AU | 3rd Jul 2015 |
| 103.63.103.0/24 | 256 | APNIC | AU | 13th Jul 2015 |
| 103.63.189.0/24 | 256 | APNIC | AU | 13th Jul 2015 |
| 103.65.22.0/24 | 256 | APNIC | AU | 8th Jun 2016 |
| 103.66.52.0/23 | 512 | APNIC | AU | 15th Jun 2016 |
| 103.67.164.0/24 | 256 | APNIC | AU | 24th Jun 2016 |
| 103.67.249.0/24 | 256 | APNIC | AU | 29th Jun 2016 |
| 103.67.250.0/24 | 256 | APNIC | AU | 29th Jun 2016 |
| 103.68.179.0/24 | 256 | APNIC | AU | 7th Jul 2016 |
| 103.68.204.0/24 | 256 | APNIC | AU | 8th Jul 2016 |
| 103.69.0.0/23 | 512 | APNIC | AU | 11th Jul 2016 |
| 103.7.164.0/22 | 1k | APNIC | AU | 28th Mar 2012 |
| 103.7.99.0/24 | 256 | APNIC | AU | 26th Mar 2012 |
| 103.70.56.0/24 | 256 | APNIC | AU | 26th Jul 2016 |
| 103.70.70.0/23 | 512 | APNIC | AU | 27th Jul 2016 |
| 103.72.201.0/24 | 256 | APNIC | AU | 23rd Aug 2016 |
| 103.73.114.0/24 | 256 | APNIC | AU | 29th Aug 2016 |
| 103.73.124.0/24 | 256 | APNIC | AU | 29th Aug 2016 |
| 103.73.126.0/24 | 256 | APNIC | AU | 30th Aug 2016 |
| 103.75.204.0/22 | 1k | APNIC | AU | 22nd Sept 2016 |
| 103.76.126.0/23 | 512 | APNIC | AU | 4th Oct 2016 |
| 103.76.246.0/24 | 256 | APNIC | AU | 12th Oct 2016 |
| 103.77.113.0/24 | 256 | APNIC | AU | 19th Oct 2016 |
| 103.77.115.0/24 | 256 | APNIC | AU | 19th Oct 2016 |
| 103.77.68.0/23 | 512 | APNIC | AU | 17th Oct 2016 |
| 103.77.7.0/24 | 256 | APNIC | AU | 13th Oct 2016 |
| 103.79.20.0/24 | 256 | APNIC | AU | 11th Nov 2016 |
| 103.8.168.0/22 | 1k | APNIC | AU | 24th Apr 2012 |
| 103.80.164.0/24 | 256 | APNIC | AU | 1st Dec 2016 |
| 103.80.209.0/24 | 256 | APNIC | AU | 6th Dec 2016 |
| 103.81.52.0/24 | 256 | APNIC | AU | 7th Dec 2016 |
| 103.84.180.0/22 | 1k | APNIC | AU | 31st Jan 2017 |
| 103.84.248.0/24 | 256 | APNIC | AU | 3rd Apr 2017 |
| 103.84.98.0/24 | 256 | APNIC | AU | 24th Jan 2017 |
| 103.85.214.0/23 | 512 | APNIC | AU | 16th Feb 2017 |
| 103.86.168.0/22 | 1k | APNIC | AU | 28th Feb 2017 |
| 103.86.58.0/23 | 512 | APNIC | AU | 21st Feb 2017 |
| 103.88.148.0/22 | 1k | APNIC | AU | 22nd Mar 2017 |
| 103.88.183.0/24 | 256 | APNIC | AU | 24th Mar 2017 |
| 103.89.38.0/23 | 512 | APNIC | AU | 29th Mar 2017 |
| 103.89.9.0/24 | 256 | APNIC | AU | 28th Mar 2017 |