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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 the most unannounced blocks, largest first.
Unannounced blocks
85,493 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 202.20.111.0/24 | 256 | APNIC |  CH | 28th Sept 1993 |
| 202.20.114.0/24 | 256 | APNIC |  CN | 14th Apr 2011 |
| 202.20.115.0/24 | 256 | APNIC |  JP | 4th Oct 1993 |
| 202.20.116.0/24 | 256 | APNIC | JP | 4th Oct 1993 |
| 202.20.117.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 202.20.120.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 202.20.123.0/24 | 256 | APNIC | JP | 14th Apr 2010 |
| 202.20.124.0/24 | 256 | APNIC | JP | 14th Apr 2010 |
| 202.20.125.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 202.20.126.0/24 | 256 | APNIC | CN | 9th Jun 2016 |
| 202.20.127.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 202.20.32.0/20 | 4.1k | APNIC |  NZ | 5th Nov 1993 |
| 202.20.66.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 202.20.68.0/24 | 256 | APNIC |  PG | 9th Jun 2016 |
| 202.20.76.0/24 | 256 | APNIC | NZ | 1st Jan 1993 |
| 202.20.79.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 202.20.8.0/21 | 2k | APNIC |  AU | 3rd Aug 1993 |
| 202.20.80.0/24 | 256 | APNIC | NZ | 24th Aug 1993 |
| 202.20.82.0/24 | 256 | APNIC |  KR | 26th Aug 1993 |
| 202.20.86.0/24 | 256 | APNIC | KR | 26th Aug 1993 |
| 202.20.87.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 202.20.88.0/23 | 512 | APNIC | CN | 14th Apr 2011 |
| 202.20.90.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 202.20.93.0/24 | 256 | APNIC | NZ | 14th Jul 1998 |
| 202.20.94.0/23 | 512 | APNIC | CN | 14th Apr 2011 |
| 202.20.98.0/24 | 256 | APNIC | CH | 20th Sept 1993 |
| 202.21.128.0/24 | 256 | APNIC | NZ | 27th May 2004 |
| 202.21.129.0/24 | 256 | APNIC |  SG | 29th Mar 2011 |
| 202.21.131.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 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 |