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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
22,595 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 203.8.106.0/24 | 256 | APNIC |  AU | 16th Sept 1994 |
| 203.8.11.0/24 | 256 | APNIC | AU | 7th Sept 1994 |
| 203.8.110.0/23 | 512 | APNIC |  CN | 14th Apr 2011 |
| 203.8.113.0/24 | 256 | APNIC | AU | 20th Sept 1994 |
| 203.8.115.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.8.12.0/22 | 1k | APNIC | AU | 27th Sept 1995 |
| 203.8.125.0/24 | 256 | APNIC | AU | 23rd Sept 1994 |
| 203.8.16.0/23 | 512 | APNIC | AU | 9th Sept 1994 |
| 203.8.163.0/24 | 256 | APNIC | AU | 5th Mar 1996 |
| 203.8.166.0/23 | 512 | APNIC | CN | 14th Apr 2011 |
| 203.8.168.0/24 | 256 | APNIC | AU | 2nd Oct 1994 |
| 203.8.169.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.8.173.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.8.184.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.8.186.0/23 | 512 | APNIC | CN | 14th Apr 2011 |
| 203.8.190.0/23 | 512 | APNIC | CN | 14th Apr 2011 |
| 203.8.192.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.8.196.0/24 | 256 | APNIC | AU | 7th Oct 1994 |
| 203.8.197.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.8.198.0/23 | 512 | APNIC | CN | 14th Apr 2011 |
| 203.8.203.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.8.204.0/24 | 256 | APNIC |  HK | 7th Oct 1994 |
| 203.8.209.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.8.210.0/23 | 512 | APNIC | CN | 14th Apr 2011 |
| 203.8.212.0/22 | 1k | APNIC | CN | 14th Apr 2011 |
| 203.8.217.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.8.220.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.8.23.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.8.4.0/22 | 1k | APNIC | AU | 31st Aug 1994 |
| 203.8.68.0/24 | 256 | APNIC | AU | 9th Sept 1994 |
| 203.8.70.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.8.8.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.8.82.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.8.86.0/23 | 512 | APNIC | CN | 14th Apr 2011 |
| 203.8.91.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.8.96.0/21 | 2k | APNIC |  GB | 15th Sept 1994 |
| 203.80.129.0/24 | 256 | APNIC | CN | 9th Jun 2016 |
| 203.80.132.0/22 | 1k | APNIC | CN | 14th Apr 2011 |
| 203.80.169.0/24 | 256 | APNIC |  TW | 27th Jun 2019 |
| 203.80.32.0/20 | 4.1k | APNIC | CN | 12th Apr 2011 |
| 203.80.4.0/23 | 512 | APNIC | CN | 14th Apr 2011 |
| 203.81.103.0/24 | 256 | APNIC |  LK | 11th Nov 2002 |
| 203.81.16.0/20 | 4.1k | APNIC | CN | 8th Jan 2002 |
| 203.81.244.0/22 | 1k | APNIC | CN | 11th Nov 2015 |
| 203.81.32.0/23 | 512 | APNIC |  SG | 1st Feb 2001 |
| 203.81.35.0/24 | 256 | APNIC | SG | 1st Feb 2001 |
| 203.81.38.0/23 | 512 | APNIC | SG | 1st Feb 2001 |
| 203.81.96.0/23 | 512 | APNIC | LK | 11th Nov 2002 |
| 203.81.98.0/24 | 256 | APNIC | LK | 11th Nov 2002 |
| 203.82.112.0/22 | 1k | APNIC | CN | 24th Nov 2015 |