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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
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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 |
|---|---|---|---|---|
| 178.100.0.0/14 | 262k | APNIC |  SG | 18th Nov 2009 |
| 178.106.0.0/16 | 65.5k | APNIC | SG | 18th Nov 2009 |
| 178.107.32.0/20 | 4.1k | APNIC |  HK | 18th Nov 2009 |
| 178.96.0.0/15 | 131k | APNIC | SG | 18th Nov 2009 |
| 179.192.0.0/16 | 65.5k | APNIC | SG | 20th Feb 2025 |
| 179.196.0.0/16 | 65.5k | APNIC | SG | 20th Feb 2025 |
| 179.70.0.0/15 | 131k | APNIC | SG | 20th Feb 2025 |
| 180.131.64.0/21 | 2k | APNIC |  JP | 20th Aug 2009 |
| 180.131.72.0/22 | 1k | APNIC | JP | 20th Aug 2009 |
| 180.131.76.0/22 | 1k | APNIC | JP | 20th Aug 2009 |
| 180.131.80.0/23 | 512 | APNIC | JP | 20th Aug 2009 |
| 180.131.82.0/24 | 256 | APNIC | JP | 20th Aug 2009 |
| 180.131.83.0/24 | 256 | APNIC | JP | 20th Aug 2009 |
| 180.131.84.0/22 | 1k | APNIC | JP | 20th Aug 2009 |
| 180.131.88.0/21 | 2k | APNIC | JP | 20th Aug 2009 |
| 180.148.152.0/21 | 2k | APNIC |  CN | 12th Apr 2011 |
| 180.148.16.0/21 | 2k | APNIC | CN | 12th Apr 2011 |
| 180.148.216.0/21 | 2k | APNIC | CN | 12th Apr 2011 |
| 180.148.224.0/19 | 8.2k | APNIC | CN | 31st Aug 2009 |
| 180.178.0.0/19 | 8.2k | APNIC |  IN | 10th Sept 2009 |
| 180.178.112.0/22 | 1k | APNIC | CN | 19th Nov 2015 |
| 180.178.116.0/22 | 1k | APNIC | CN | 19th Nov 2015 |
| 180.178.144.0/20 | 4.1k | APNIC |  PK | 15th Sept 2009 |
| 180.178.168.0/22 | 1k | APNIC | PK | 15th Sept 2009 |
| 180.187.0.0/16 | 65.5k | APNIC | CN | 15th Sept 2009 |
| 180.188.0.0/20 | 4.1k | APNIC | CN | 16th Sept 2009 |
| 180.188.226.0/23 | 512 | APNIC | IN | 18th Sept 2009 |
| 180.188.233.0/24 | 256 | APNIC | IN | 18th Sept 2009 |
| 180.188.238.0/23 | 512 | APNIC | IN | 18th Sept 2009 |
| 180.188.244.0/23 | 512 | APNIC | IN | 18th Sept 2009 |
| 180.188.48.0/20 | 4.1k | APNIC | CN | 16th Sept 2009 |
| 180.188.64.0/18 | 16.4k | APNIC | CN | 16th Sept 2009 |
| 180.189.148.0/22 | 1k | APNIC | CN | 22nd Sept 2009 |
| 180.200.232.0/22 | 1k | APNIC |  MY | 14th Jun 2010 |
| 180.204.0.0/14 | 262k | APNIC |  TW | 23rd Sept 2009 |
| 180.210.0.0/21 | 2k | APNIC |  KR | 25th Sept 2009 |
| 180.210.16.0/21 | 2k | APNIC | KR | 25th Sept 2009 |
| 180.210.216.0/22 | 1k | APNIC |  TH | 30th Sept 2009 |
| 180.210.24.0/22 | 1k | APNIC | KR | 25th Sept 2009 |
| 180.210.28.0/22 | 1k | APNIC | KR | 25th Sept 2009 |
| 180.210.32.0/21 | 2k | APNIC | KR | 25th Sept 2009 |
| 180.210.40.0/22 | 1k | APNIC | KR | 25th Sept 2009 |
| 180.210.44.0/22 | 1k | APNIC | KR | 25th Sept 2009 |
| 180.210.48.0/21 | 2k | APNIC | KR | 25th Sept 2009 |
| 180.210.56.0/22 | 1k | APNIC | KR | 25th Sept 2009 |
| 180.210.8.0/21 | 2k | APNIC | KR | 25th Sept 2009 |
| 180.211.80.0/22 | 1k | APNIC | IN | 1st Oct 2009 |
| 180.215.0.0/16 | 65.5k | APNIC | SG | 1st Oct 2009 |
| 180.217.0.0/16 | 65.5k | APNIC | TW | 6th Oct 2009 |
| 180.222.204.0/22 | 1k | APNIC | SG | 15th Oct 2009 |