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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 registered through APNIC
22,624 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 202.42.172.0/24 | 256 | APNIC |  JP | 8th Sept 1999 |
| 202.42.174.0/24 | 256 | APNIC | JP | 4th Oct 1994 |
| 202.42.177.0/24 | 256 | APNIC | JP | 11th Sept 2001 |
| 202.42.178.0/23 | 512 | APNIC | JP | 11th Sept 2001 |
| 202.42.180.0/23 | 512 | APNIC | JP | 11th Sept 2001 |
| 202.42.183.0/24 | 256 | APNIC | JP | 11th Sept 2001 |
| 202.42.188.0/23 | 512 | APNIC | JP | 11th Sept 2001 |
| 202.42.202.0/24 | 256 | APNIC | JP | 8th Sept 1999 |
| 202.42.204.0/24 | 256 | APNIC | JP | 8th Sept 1999 |
| 202.42.214.0/24 | 256 | APNIC | JP | 8th Sept 1999 |
| 202.42.216.0/23 | 512 | APNIC | JP | 8th Sept 1999 |
| 202.42.218.0/24 | 256 | APNIC | JP | 8th Sept 1999 |
| 202.42.222.0/23 | 512 | APNIC | JP | 8th Sept 1999 |
| 202.42.224.0/23 | 512 | APNIC | JP | 8th Sept 1999 |
| 202.42.227.0/24 | 256 | APNIC | JP | 8th Sept 1999 |
| 202.42.229.0/24 | 256 | APNIC | JP | 8th Sept 1999 |
| 202.42.230.0/24 | 256 | APNIC | JP | 8th Sept 1999 |
| 202.42.232.0/24 | 256 | APNIC | JP | 8th Sept 1999 |
| 202.42.238.0/24 | 256 | APNIC | JP | 8th Sept 1999 |
| 202.42.50.0/24 | 256 | APNIC | JP | 9th Jul 1999 |
| 202.42.55.0/24 | 256 | APNIC | JP | 9th Jul 1999 |
| 202.42.57.0/24 | 256 | APNIC | JP | 9th Jul 1999 |
| 202.42.58.0/24 | 256 | APNIC | JP | 9th Jul 1999 |
| 202.42.66.0/24 | 256 | APNIC | JP | 9th Jul 1999 |
| 202.42.68.0/23 | 512 | APNIC | JP | 9th Jul 1999 |
| 202.42.71.0/24 | 256 | APNIC | JP | 9th Jul 1999 |
| 202.42.72.0/21 | 2k | APNIC | JP | 9th Jul 1999 |
| 202.42.8.0/21 | 2k | APNIC | JP | 9th Jul 1999 |
| 202.42.80.0/20 | 4.1k | APNIC | JP | 9th Jul 1999 |
| 202.43.0.0/23 | 512 | APNIC |  TH | 6th Jul 2005 |
| 202.43.104.0/22 | 1k | APNIC | JP | 3rd Jun 2009 |
| 202.43.124.0/22 | 1k | APNIC |  HK | 6th Nov 2015 |
| 202.43.144.0/20 | 4.1k | APNIC |  CN | 19th Jul 2005 |
| 202.43.32.0/20 | 4.1k | APNIC | TH | 3rd Nov 2005 |
| 202.43.76.0/22 | 1k | APNIC | CN | 21st May 2009 |
| 202.43.82.0/24 | 256 | APNIC | HK | 29th May 2009 |
| 202.43.88.0/23 | 512 | APNIC |  ID | 29th May 2009 |
| 202.43.91.0/24 | 256 | APNIC |  US | 17th Aug 2016 |
| 202.44.129.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 202.44.132.0/23 | 512 | APNIC | CN | 14th Apr 2011 |
| 202.44.146.0/23 | 512 | APNIC | CN | 14th Apr 2011 |
| 202.44.152.0/21 | 2k | APNIC |  AU | 21st Jul 2003 |
| 202.44.16.0/20 | 4.1k | APNIC | CN | 12th Apr 2011 |
| 202.44.48.0/22 | 1k | APNIC | CN | 29th Oct 2015 |
| 202.44.67.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 202.44.74.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 202.44.96.0/24 | 256 | APNIC | TH | 23rd Mar 2005 |
| 202.44.97.0/24 | 256 | APNIC | CN | 9th Jun 2016 |
| 202.45.0.0/23 | 512 | APNIC | CN | 14th Apr 2011 |
| 202.45.12.0/24 | 256 | APNIC | JP | 21st Jan 2005 |