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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 202.14.138.0/23 | 512 | APNIC |  AU | 8th Jul 1993 |
| 202.14.146.0/24 | 256 | APNIC | AU | 9th Jul 1993 |
| 202.14.178.0/23 | 512 | APNIC | AU | 3rd Aug 1993 |
| 202.14.180.0/23 | 512 | APNIC | AU | 3rd Aug 1993 |
| 202.14.190.0/24 | 256 | APNIC | AU | 3rd Aug 1993 |
| 202.14.191.0/24 | 256 | APNIC | AU | 4th Aug 1993 |
| 202.14.232.0/23 | 512 | APNIC | AU | 11th Aug 1993 |
| 202.14.244.0/23 | 512 | APNIC | AU | 12th Aug 1993 |
| 202.14.66.0/24 | 256 | APNIC | AU | 28th Jan 1994 |
| 202.143.48.0/21 | 2k | APNIC | AU | 25th May 2005 |
| 202.146.6.0/23 | 512 | APNIC | AU | 26th Jul 2005 |
| 202.150.60.0/23 | 512 | APNIC | AU | 22nd Oct 2007 |
| 202.155.180.0/22 | 1k | APNIC | AU | 18th Feb 2019 |
| 202.155.184.0/23 | 512 | APNIC | AU | 18th Feb 2019 |
| 202.176.14.0/24 | 256 | APNIC | AU | 15th Jan 2008 |
| 202.181.32.0/19 | 8.2k | APNIC | AU | 11th Apr 2011 |
| 202.2.92.0/22 | 1k | APNIC | AU | 4th Apr 2011 |
| 202.20.8.0/21 | 2k | APNIC | AU | 3rd Aug 1993 |
| 202.22.0.0/21 | 2k | APNIC | AU | 4th Oct 1993 |
| 202.27.10.0/23 | 512 | APNIC | AU | 15th Nov 2018 |
| 202.27.238.0/24 | 256 | APNIC | AU | 19th Apr 1995 |
| 202.3.132.0/24 | 256 | APNIC | AU | 19th Sept 2005 |
| 202.3.133.0/24 | 256 | APNIC | AU | 30th Aug 2002 |
| 202.37.58.0/24 | 256 | APNIC | AU | 7th Apr 1995 |
| 202.37.84.0/24 | 256 | APNIC | AU | 11th Aug 1996 |
| 202.38.144.0/23 | 512 | APNIC | AU | 3rd Feb 2011 |
| 202.38.148.0/24 | 256 | APNIC | AU | 20th Oct 2003 |
| 202.4.166.0/24 | 256 | APNIC | AU | 1st Oct 2009 |
| 202.4.240.0/22 | 1k | APNIC | AU | 4th Aug 2004 |
| 202.40.163.0/24 | 256 | APNIC | AU | 20th Nov 2003 |
| 202.41.4.0/22 | 1k | APNIC | AU | 29th Dec 2009 |
| 202.44.152.0/21 | 2k | APNIC | AU | 21st Jul 2003 |
| 202.45.13.0/24 | 256 | APNIC | AU | 10th Mar 2005 |
| 202.45.150.0/23 | 512 | APNIC | AU | 3rd Jul 2008 |
| 202.46.132.0/22 | 1k | APNIC | AU | 15th Jul 2003 |
| 202.47.86.0/24 | 256 | APNIC | AU | 22nd Dec 2009 |
| 202.49.32.0/24 | 256 | APNIC | AU | 23rd Aug 1994 |
| 202.5.190.0/24 | 256 | APNIC | AU | 20th Mar 2002 |
| 202.50.174.0/24 | 256 | APNIC | AU | 4th Oct 1995 |
| 202.52.145.0/24 | 256 | APNIC | AU | 5th Aug 2010 |
| 202.52.159.0/24 | 256 | APNIC | AU | 20th Aug 2010 |
| 202.59.229.0/24 | 256 | APNIC | AU | 25th Aug 2010 |
| 202.6.106.0/24 | 256 | APNIC | AU | 4th Mar 1993 |
| 202.6.109.0/24 | 256 | APNIC | AU | 3rd Dec 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 |
| 202.68.96.0/19 | 8.2k | 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 |