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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
22,602 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 203.29.208.0/23 | 512 | APNIC |  AU | 15th Jul 1996 |
| 203.29.210.0/24 | 256 | APNIC |  CN | 14th Apr 2011 |
| 203.29.217.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.29.219.0/24 | 256 | APNIC | AU | 16th Jul 1996 |
| 203.29.227.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.29.231.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.29.233.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.29.234.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.29.248.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.29.254.0/23 | 512 | APNIC | CN | 14th Apr 2011 |
| 203.29.28.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.29.44.0/24 | 256 | APNIC | AU | 8th Jul 1996 |
| 203.29.45.0/24 | 256 | APNIC | AU | 8th Jul 1996 |
| 203.29.46.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.29.51.0/24 | 256 | APNIC | AU | 8th Jul 1996 |
| 203.29.57.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.29.59.0/24 | 256 | APNIC | AU | 9th Jul 1996 |
| 203.29.61.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.29.63.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.29.68.0/24 | 256 | APNIC | AU | 10th Jul 1996 |
| 203.29.69.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.29.73.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.29.76.0/24 | 256 | APNIC | AU | 10th Jul 1996 |
| 203.29.8.0/23 | 512 | APNIC | CN | 14th Apr 2011 |
| 203.29.80.0/24 | 256 | APNIC | AU | 10th Jul 1996 |
| 203.29.81.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.29.82.0/23 | 512 | APNIC | AU | 10th Jul 1996 |
| 203.29.89.0/24 | 256 | APNIC | AU | 10th Jul 1996 |
| 203.29.90.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.29.92.0/24 | 256 | APNIC | AU | 10th Jul 1996 |
| 203.29.95.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.29.98.0/24 | 256 | APNIC | AU | 11th Jul 1996 |
| 203.3.0.0/18 | 16.4k | APNIC | AU | 28th Jan 1994 |
| 203.3.105.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.3.120.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.3.122.0/24 | 256 | APNIC | AU | 14th Mar 1994 |
| 203.3.123.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.3.128.0/23 | 512 | APNIC | AU | 14th Mar 1994 |
| 203.3.132.0/24 | 256 | APNIC |  PK | 17th Aug 2016 |
| 203.3.135.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.3.139.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.3.142.0/24 | 256 | APNIC | AU | 29th Mar 1994 |
| 203.3.143.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.3.152.0/22 | 1k | APNIC | AU | 14th Mar 1994 |
| 203.3.160.0/22 | 1k | APNIC | AU | 24th Mar 1994 |
| 203.3.68.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.3.72.0/23 | 512 | APNIC | CN | 14th Apr 2011 |
| 203.3.75.0/24 | 256 | APNIC | CN | 14th Apr 2011 |
| 203.3.78.0/24 | 256 | APNIC | AU | 4th Mar 1994 |
| 203.3.91.0/24 | 256 | APNIC |  ID | 13th Oct 2023 |