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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
Browse by country
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 |
|---|---|---|---|---|
| 202.21.132.0/24 | 256 | APNIC |  CN | 14th Apr 2011 |
| 202.21.133.0/24 | 256 | APNIC |  NZ | 19th Oct 1993 |
| 202.21.141.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 202.21.142.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 202.21.145.0/24 | 256 | APNIC |  JP | 16th Nov 1993 |
| 202.21.146.0/24 | 256 | APNIC | JP | 16th Nov 1993 |
| 202.21.147.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 202.21.148.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 202.21.150.0/23 | 512 | APNIC | CN | 14th Apr 2011 |
| 202.21.152.0/23 | 512 | APNIC | CN | 14th Apr 2011 |
| 202.21.154.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 202.21.156.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 202.21.48.0/22 | 1k | APNIC | CN | 21st Nov 2015 |
| 202.21.52.0/22 | 1k | APNIC | CN | 21st Nov 2015 |
| 202.21.56.0/22 | 1k | APNIC | CN | 21st Nov 2015 |
| 202.21.60.0/22 | 1k | APNIC | CN | 21st Nov 2015 |
| 202.22.0.0/21 | 2k | APNIC |  AU | 4th Oct 1993 |
| 202.22.16.0/21 | 2k | APNIC | NZ | 3rd Feb 1999 |
| 202.22.24.0/22 | 1k | APNIC | NZ | 3rd Feb 1999 |
| 202.22.248.0/22 | 1k | APNIC | CN | 30th May 1997 |
| 202.22.252.0/22 | 1k | APNIC | CN | 5th Nov 1996 |
| 202.22.28.0/23 | 512 | APNIC | NZ | 3rd Feb 1999 |
| 202.22.30.0/24 | 256 | APNIC | NZ | 3rd Feb 1999 |
| 202.22.32.0/19 | 8.2k | APNIC |  KR | 9th Aug 2006 |
| 202.22.64.0/18 | 16.4k | APNIC | JP | 14th Apr 2010 |
| 202.27.0.0/21 | 2k | APNIC | NZ | 4th Mar 1994 |
| 202.27.10.0/23 | 512 | APNIC | AU | 15th Nov 2018 |
| 202.27.100.0/22 | 1k | APNIC | NZ | 11th Aug 1998 |
| 202.27.115.0/24 | 256 | APNIC | NZ | 17th Nov 1995 |
| 202.27.116.0/23 | 512 | APNIC | NZ | 17th Nov 1995 |
| 202.27.12.0/24 | 256 | APNIC | CN | 9th Jun 2016 |
| 202.27.136.0/23 | 512 | APNIC | CN | 14th Apr 2011 |
| 202.27.14.0/24 | 256 | APNIC | CN | 9th Jun 2016 |
| 202.27.146.0/23 | 512 | APNIC | NZ | 3rd Apr 1995 |
| 202.27.169.0/24 | 256 | APNIC | NZ | 14th Jun 2002 |
| 202.27.176.0/21 | 2k | APNIC | NZ | 25th Sept 2000 |
| 202.27.191.0/24 | 256 | APNIC | NZ | 28th May 1996 |
| 202.27.238.0/24 | 256 | APNIC | AU | 19th Apr 1995 |
| 202.27.246.0/24 | 256 | APNIC | NZ | 7th May 1996 |
| 202.27.78.0/23 | 512 | APNIC | NZ | 4th May 2010 |
| 202.27.85.0/24 | 256 | APNIC | NZ | 12th Feb 1996 |
| 202.27.86.0/23 | 512 | APNIC | NZ | 20th Jun 1996 |
| 202.27.91.0/24 | 256 | APNIC | NZ | 12th Jun 1995 |
| 202.27.92.0/24 | 256 | APNIC | NZ | 3rd Feb 1999 |
| 202.27.93.0/24 | 256 | APNIC | NZ | 27th Mar 1998 |
| 202.27.94.0/23 | 512 | APNIC | NZ | 27th Mar 1998 |
| 202.27.97.0/24 | 256 | APNIC | NZ | 24th Oct 1995 |
| 202.3.128.0/23 | 512 | APNIC | CN | 14th Apr 2011 |
| 202.3.132.0/24 | 256 | APNIC | AU | 19th Sept 2005 |
| 202.3.133.0/24 | 256 | APNIC | AU | 30th Aug 2002 |