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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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.
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Countries with unannounced space registered through APNIC, largest first.
Unannounced blocks in Australia
2,364 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 1.2.3.0/24 | 256 | APNIC |  AU | 11th Aug 2011 |
| 1.4.0.0/24 | 256 | APNIC | AU | 11th Aug 2011 |
| 103.1.0.0/22 | 1k | APNIC | AU | 5th Apr 2011 |
| 103.1.4.0/24 | 256 | APNIC | AU | 5th Apr 2011 |
| 103.1.76.0/22 | 1k | APNIC | AU | 18th Apr 2011 |
| 103.10.232.0/24 | 256 | APNIC | AU | 3rd Aug 2011 |
| 103.100.194.0/24 | 256 | APNIC | AU | 12th Sept 2017 |
| 103.101.135.0/24 | 256 | APNIC | AU | 26th Sept 2017 |
| 103.101.173.0/24 | 256 | APNIC | AU | 28th Sept 2017 |
| 103.102.53.0/24 | 256 | APNIC | AU | 12th Oct 2017 |
| 103.103.114.0/24 | 256 | APNIC | AU | 7th Nov 2017 |
| 103.104.166.0/23 | 512 | APNIC | AU | 28th Nov 2017 |
| 103.104.200.0/23 | 512 | APNIC | AU | 29th Nov 2017 |
| 103.107.149.0/24 | 256 | APNIC | AU | 16th Jan 2018 |
| 103.107.185.0/24 | 256 | APNIC | AU | 17th Jan 2018 |
| 103.107.224.0/23 | 512 | APNIC | AU | 19th Jan 2018 |
| 103.109.232.0/24 | 256 | APNIC | AU | 21st Feb 2018 |
| 103.109.77.0/24 | 256 | APNIC | AU | 12th Feb 2018 |
| 103.11.184.0/23 | 512 | APNIC | AU | 28th Oct 2011 |
| 103.110.82.0/24 | 256 | APNIC | AU | 2nd Mar 2018 |
| 103.111.168.0/22 | 1k | APNIC | AU | 19th Mar 2018 |
| 103.111.176.0/22 | 1k | APNIC | AU | 19th Mar 2018 |
| 103.111.87.0/24 | 256 | APNIC | AU | 16th Mar 2018 |
| 103.114.9.0/24 | 256 | APNIC | AU | 19th Apr 2018 |
| 103.115.165.0/24 | 256 | APNIC | AU | 18th May 2018 |
| 103.115.22.0/24 | 256 | APNIC | AU | 11th May 2018 |
| 103.116.134.0/24 | 256 | APNIC | AU | 31st May 2018 |
| 103.116.195.0/24 | 256 | APNIC | AU | 7th Jun 2018 |
| 103.117.96.0/23 | 512 | APNIC | AU | 22nd Jun 2018 |
| 103.117.99.0/24 | 256 | APNIC | AU | 25th Jun 2018 |
| 103.119.222.0/24 | 256 | APNIC | AU | 27th Jul 2018 |
| 103.12.188.0/22 | 1k | APNIC | AU | 16th Jul 2012 |
| 103.12.22.0/24 | 256 | APNIC | AU | 31st May 2012 |
| 103.120.137.0/24 | 256 | APNIC | AU | 6th Aug 2018 |
| 103.120.219.0/24 | 256 | APNIC | AU | 9th Aug 2018 |
| 103.120.77.0/24 | 256 | APNIC | AU | 2nd Aug 2018 |
| 103.122.120.0/24 | 256 | APNIC | AU | 17th Sept 2018 |
| 103.122.166.0/23 | 512 | APNIC | AU | 19th Sept 2018 |
| 103.125.152.0/23 | 512 | APNIC | AU | 19th Nov 2018 |
| 103.125.187.0/24 | 256 | APNIC | AU | 22nd Nov 2018 |
| 103.125.204.0/22 | 1k | APNIC | AU | 22nd Nov 2018 |
| 103.126.121.0/24 | 256 | APNIC | AU | 4th Dec 2018 |
| 103.126.186.0/24 | 256 | APNIC | AU | 5th Dec 2018 |
| 103.13.216.0/23 | 512 | APNIC | AU | 31st Jul 2012 |
| 103.130.111.0/24 | 256 | APNIC | AU | 8th Oct 2018 |
| 103.131.42.0/24 | 256 | APNIC | AU | 16th Oct 2018 |
| 103.131.82.0/24 | 256 | APNIC | AU | 21st Jun 2023 |
| 103.133.161.0/24 | 256 | APNIC | AU | 29th Jan 2019 |
| 103.134.182.0/23 | 512 | APNIC | AU | 15th Feb 2019 |
| 103.135.13.0/24 | 256 | APNIC | AU | 20th Feb 2019 |