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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
22,595 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 203.9.65.0/24 | 256 | APNIC |  CN | 14th Apr 2011 |
| 203.9.66.0/24 | 256 | APNIC |  AU | 21st Oct 1994 |
| 203.9.67.0/24 | 256 | APNIC | AU | 21st Oct 1994 |
| 203.9.70.0/23 | 512 | APNIC | CN | 14th Apr 2011 |
| 203.9.72.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.9.73.0/24 | 256 | APNIC | AU | 25th Oct 1994 |
| 203.9.75.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.9.76.0/23 | 512 | APNIC | CN | 14th Apr 2011 |
| 203.9.96.0/22 | 1k | APNIC | CN | 14th Apr 2011 |
| 203.90.12.0/22 | 1k | APNIC | CN | 29th Oct 2015 |
| 203.90.8.0/22 | 1k | APNIC | CN | 14th Apr 2011 |
| 203.91.0.0/19 | 8.2k | APNIC |  TW | 12th May 2005 |
| 203.91.96.0/20 | 4.1k | APNIC | CN | 9th Jun 2004 |
| 203.92.0.0/22 | 1k | APNIC | CN | 14th Apr 2011 |
| 203.92.160.0/19 | 8.2k | APNIC | CN | 17th May 2004 |
| 203.92.6.0/24 | 256 | APNIC | CN | 9th Jun 2016 |
| 203.94.128.0/22 | 1k | APNIC | AU | 26th May 2000 |
| 203.94.132.0/22 | 1k | APNIC | AU | 7th Jun 2000 |
| 203.94.136.0/21 | 2k | APNIC | AU | 7th Jun 2000 |
| 203.94.144.0/20 | 4.1k | APNIC | AU | 7th Jun 2000 |
| 203.94.160.0/20 | 4.1k | APNIC | AU | 18th Jun 2001 |
| 203.94.176.0/20 | 4.1k | APNIC | AU | 25th Oct 2001 |
| 203.95.112.0/20 | 4.1k | APNIC | CN | 16th Jun 2006 |
| 203.95.16.0/21 | 2k | APNIC |  JP | 23rd Mar 2006 |
| 203.95.200.0/22 | 1k | APNIC | CN | 25th Dec 2015 |
| 203.95.204.0/22 | 1k | APNIC | CN | 25th Dec 2015 |
| 203.95.208.0/22 | 1k | APNIC | CN | 28th Dec 2015 |
| 203.95.224.0/19 | 8.2k | APNIC | CN | 12th Apr 2011 |
| 203.95.96.0/20 | 4.1k | APNIC | CN | 5th Jan 2005 |
| 203.96.164.0/22 | 1k | APNIC |  HK | 16th Nov 2018 |
| 203.96.172.0/22 | 1k | APNIC | AU | 16th Nov 2018 |
| 203.96.244.0/22 | 1k | APNIC |  PH | 19th Nov 2018 |
| 203.98.66.0/24 | 256 | APNIC | AU | 15th Jun 2000 |
| 203.98.69.0/24 | 256 | APNIC | AU | 15th Jun 2000 |
| 203.98.79.0/24 | 256 | APNIC | AU | 15th Jun 2000 |
| 203.99.0.0/21 | 2k | APNIC | JP | 8th Mar 2006 |
| 203.99.248.0/22 | 1k | APNIC |  VN | 16th Mar 2007 |
| 203.99.254.0/24 | 256 | APNIC | HK | 17th Nov 2005 |
| 203.99.80.0/20 | 4.1k | APNIC | CN | 8th Mar 2006 |
| 204.110.8.0/21 | 2k | APNIC | HK | 16th Feb 2023 |
| 204.152.224.0/21 | 2k | APNIC | HK | 18th Feb 2009 |
| 207.158.64.0/18 | 16.4k | APNIC | AU | 6th Sept 2000 |
| 207.241.186.0/23 | 512 | APNIC |  PG | 11th Feb 1999 |
| 209.103.160.0/19 | 8.2k | APNIC |  SG | 23rd Feb 2000 |
| 210.0.0.0/19 | 8.2k | APNIC | AU | 9th Sept 1996 |
| 210.1.16.0/24 | 256 | APNIC |  TH | 23rd Nov 2000 |
| 210.111.112.0/20 | 4.1k | APNIC |  KR | 30th Apr 1997 |
| 210.111.64.0/20 | 4.1k | APNIC | KR | 30th Apr 1997 |
| 210.114.112.0/20 | 4.1k | APNIC | KR | 30th Apr 1997 |
| 210.114.128.0/19 | 8.2k | APNIC | KR | 30th Apr 1997 |