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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
22,580 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 138.252.78.0/23 | 512 | APNIC |  CN | 21st Oct 2025 |
| 138.43.192.0/20 | 4.1k | APNIC |  HK | 31st Jan 1990 |
| 139.150.96.0/19 | 8.2k | APNIC |  KR | 9th Mar 2011 |
| 139.154.0.0/16 | 65.5k | APNIC |  JP | 7th Feb 1996 |
| 139.176.0.0/16 | 65.5k | APNIC | CN | 10th Mar 2011 |
| 139.190.0.0/18 | 16.4k | APNIC |  PK | 10th Mar 2011 |
| 139.190.64.0/19 | 8.2k | APNIC | PK | 10th Mar 2011 |
| 139.190.96.0/19 | 8.2k | APNIC |  ID | 10th Mar 2011 |
| 139.28.128.0/22 | 1k | APNIC | HK | 2nd Jan 2019 |
| 139.5.128.0/22 | 1k | APNIC | CN | 22nd Mar 2016 |
| 139.5.160.0/22 | 1k | APNIC | CN | 28th Mar 2016 |
| 139.5.184.0/22 | 1k | APNIC |  BN | 29th Mar 2016 |
| 139.5.192.0/22 | 1k | APNIC | CN | 29th Mar 2016 |
| 139.5.204.0/22 | 1k | APNIC | CN | 30th Mar 2016 |
| 139.5.212.0/22 | 1k | APNIC | CN | 30th Mar 2016 |
| 139.5.216.0/22 | 1k | APNIC |  MN | 30th Mar 2016 |
| 139.5.244.0/22 | 1k | APNIC | CN | 30th Mar 2016 |
| 139.5.56.0/22 | 1k | APNIC | CN | 3rd Mar 2016 |
| 139.5.80.0/22 | 1k | APNIC | CN | 16th Mar 2016 |
| 139.5.92.0/22 | 1k | APNIC | CN | 17th Mar 2016 |
| 14.0.0.0/21 | 2k | APNIC | CN | 12th Apr 2011 |
| 14.0.12.0/22 | 1k | APNIC | CN | 14th Apr 2011 |
| 14.1.0.0/22 | 1k | APNIC | CN | 14th Apr 2011 |
| 14.1.108.0/22 | 1k | APNIC | CN | 12th Jan 2016 |
| 14.1.124.0/22 | 1k | APNIC | MN | 12th Jan 2016 |
| 14.1.24.0/22 | 1k | APNIC | CN | 14th Dec 2015 |
| 14.102.128.0/22 | 1k | APNIC | CN | 14th Apr 2011 |
| 14.102.180.0/22 | 1k | APNIC | CN | 13th Jan 2016 |
| 14.102.192.0/19 | 8.2k | APNIC | JP | 20th Sept 2010 |
| 14.102.46.0/23 | 512 | APNIC | ID | 13th Sept 2010 |
| 14.130.0.0/15 | 131k | APNIC | CN | 18th Aug 2010 |
| 14.192.160.0/19 | 8.2k | APNIC | HK | 28th Sept 2010 |
| 14.192.60.0/22 | 1k | APNIC | CN | 27th Sept 2010 |
| 14.192.76.0/22 | 1k | APNIC | CN | 14th Apr 2011 |
| 14.192.8.0/22 | 1k | APNIC | HK | 13th Jan 2016 |
| 14.196.0.0/15 | 131k | APNIC | CN | 3rd Sept 2010 |
| 140.168.192.0/19 | 8.2k | APNIC |  AU | 8th May 1990 |
| 140.81.0.0/16 | 65.5k | APNIC | JP | 23rd Feb 2011 |
| 141.120.0.0/16 | 65.5k | APNIC | AU | 24th Jul 1990 |
| 141.178.0.0/16 | 65.5k | APNIC | JP | 26th Feb 1991 |
| 142.70.0.0/16 | 65.5k | APNIC |  SG | 26th Mar 1990 |
| 142.79.192.0/19 | 8.2k | APNIC | SG | 30th Jul 2019 |
| 143.174.128.0/18 | 16.4k | APNIC | AU | 1st Oct 1990 |
| 143.174.224.0/19 | 8.2k | APNIC | AU | 1st Oct 1990 |
| 143.192.112.0/20 | 4.1k | APNIC | SG | 1st Oct 1990 |
| 143.201.0.0/16 | 65.5k | APNIC | JP | 10th Feb 2011 |
| 143.244.0.0/19 | 8.2k | APNIC | SG | 22nd Jul 2020 |
| 143.246.32.0/22 | 1k | APNIC |  TH | 26th Oct 1990 |
| 143.246.44.0/22 | 1k | APNIC |  US | 26th Oct 1990 |
| 144.1.0.0/16 | 65.5k | APNIC | JP | 17th Feb 2011 |