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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
2,391 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 202.52.159.0/24 | 256 | APNIC |  AU | 20th Aug 2010 |
| 202.59.16.0/22 | 1k | APNIC | AU | 20th Feb 2001 |
| 202.59.20.0/23 | 512 | APNIC | AU | 20th Feb 2001 |
| 202.59.229.0/24 | 256 | APNIC | AU | 25th Aug 2010 |
| 202.59.24.0/22 | 1k | APNIC | AU | 20th Feb 2001 |
| 202.59.28.0/24 | 256 | APNIC | AU | 20th Feb 2001 |
| 202.59.96.0/20 | 4.1k | APNIC | AU | 22nd Apr 2002 |
| 202.6.106.0/24 | 256 | APNIC | AU | 4th Mar 1993 |
| 202.6.109.0/24 | 256 | APNIC | AU | 3rd Dec 1993 |
| 202.6.112.0/24 | 256 | APNIC | AU | 17th Mar 1993 |
| 202.6.32.0/19 | 8.2k | APNIC | AU | 22nd Feb 1993 |
| 202.61.109.0/24 | 256 | APNIC | AU | 15th Oct 2010 |
| 202.65.12.0/22 | 1k | APNIC | AU | 10th Feb 2004 |
| 202.68.112.0/21 | 2k | APNIC | AU | 6th Apr 2011 |
| 202.68.96.0/21 | 2k | APNIC | AU | 6th Apr 2011 |
| 202.7.2.0/23 | 512 | APNIC | AU | 25th Sept 2003 |
| 202.7.56.0/23 | 512 | APNIC | AU | 22nd Dec 2015 |
| 202.73.144.0/20 | 4.1k | APNIC | AU | 11th Apr 2011 |
| 202.74.252.0/24 | 256 | APNIC | AU | 17th Jun 2005 |
| 202.77.136.0/24 | 256 | APNIC | AU | 22nd Nov 2005 |
| 202.77.88.0/22 | 1k | APNIC | AU | 23rd Nov 2007 |
| 202.78.32.0/20 | 4.1k | APNIC | AU | 5th Jun 2002 |
| 202.8.64.0/24 | 256 | APNIC | AU | 7th Jan 2011 |
| 202.86.112.0/24 | 256 | APNIC | AU | 20th Oct 2010 |
| 202.86.16.0/21 | 2k | APNIC | AU | 28th Sept 2004 |
| 202.86.250.0/24 | 256 | APNIC | AU | 3rd Mar 2006 |
| 202.9.33.0/24 | 256 | APNIC | AU | 5th Dec 2003 |
| 202.9.68.0/24 | 256 | APNIC | AU | 16th Aug 2018 |
| 202.9.94.0/23 | 512 | APNIC | AU | 1st Jun 2010 |
| 202.90.160.0/20 | 4.1k | APNIC | AU | 29th Aug 2002 |
| 202.90.197.0/24 | 256 | APNIC | AU | 18th Jul 2008 |
| 202.90.206.0/23 | 512 | APNIC | AU | 29th Jul 2008 |
| 202.90.32.0/24 | 256 | APNIC | AU | 15th Sept 2010 |
| 202.91.4.0/22 | 1k | APNIC | AU | 7th Jun 2006 |
| 202.92.240.0/21 | 2k | APNIC | AU | 1st Apr 2005 |
| 202.92.32.0/20 | 4.1k | APNIC | AU | 14th May 2001 |
| 202.94.69.0/24 | 256 | APNIC | AU | 6th Dec 2010 |
| 202.94.78.0/23 | 512 | APNIC | AU | 15th Dec 2010 |
| 203.0.101.0/24 | 256 | APNIC | AU | 12th Nov 1993 |
| 203.0.103.0/24 | 256 | APNIC | AU | 17th Nov 1993 |
| 203.0.121.0/24 | 256 | APNIC | AU | 21st Sept 1993 |
| 203.0.123.0/24 | 256 | APNIC | AU | 22nd Sept 1993 |
| 203.0.138.0/24 | 256 | APNIC | AU | 27th Sept 1993 |
| 203.0.140.0/24 | 256 | APNIC | AU | 4th Nov 2026 |
| 203.0.153.0/24 | 256 | APNIC | AU | 25th Nov 1993 |
| 203.0.25.0/24 | 256 | APNIC | AU | 6th Sept 1993 |
| 203.0.32.0/22 | 1k | APNIC | AU | 7th Sept 1993 |
| 203.0.41.0/24 | 256 | APNIC | AU | 7th Sept 1993 |
| 203.0.48.0/20 | 4.1k | APNIC | AU | 8th Sept 1993 |
| 203.0.68.0/22 | 1k | APNIC | AU | 14th Sept 1993 |