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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 the most unannounced blocks, largest first.
Unannounced blocks
84,960 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 113.30.112.0/20 | 4.1k | APNIC |  KR | 17th Oct 2008 |
| 113.30.168.0/22 | 1k | APNIC |  IN | 17th Oct 2008 |
| 113.30.172.0/22 | 1k | APNIC | IN | 17th Oct 2008 |
| 113.30.200.0/21 | 2k | APNIC | IN | 17th Oct 2008 |
| 113.30.224.0/22 | 1k | APNIC |  AU | 17th Oct 2008 |
| 113.30.64.0/21 | 2k | APNIC | KR | 17th Oct 2008 |
| 113.30.72.0/21 | 2k | APNIC | KR | 17th Oct 2008 |
| 113.30.80.0/20 | 4.1k | APNIC | KR | 17th Oct 2008 |
| 113.30.96.0/20 | 4.1k | APNIC | KR | 17th Oct 2008 |
| 113.52.160.0/19 | 8.2k | APNIC |  CN | 23rd Oct 2008 |
| 113.52.228.0/22 | 1k | APNIC | CN | 19th Nov 2015 |
| 113.59.192.0/19 | 8.2k | APNIC |  LK | 28th Oct 2008 |
| 114.110.192.0/18 | 16.4k | APNIC | KR | 13th Jan 2011 |
| 114.110.24.0/21 | 2k | APNIC | KR | 23rd May 2008 |
| 114.110.40.0/21 | 2k | APNIC |  ID | 4th Mar 2011 |
| 114.111.160.0/20 | 4.1k | APNIC | CN | 27th May 2008 |
| 114.119.208.0/20 | 4.1k | APNIC | CN | 23rd May 2008 |
| 114.119.224.0/19 | 8.2k | APNIC | CN | 23rd May 2008 |
| 114.128.0.0/16 | 65.5k | APNIC |  TH | 26th May 2008 |
| 114.129.10.0/23 | 512 | APNIC | IN | 28th May 2008 |
| 114.129.45.0/24 | 256 | APNIC |  SG | 5th Jun 2008 |
| 114.133.0.0/16 | 65.5k | APNIC |  MY | 4th Jun 2008 |
| 114.134.72.0/21 | 2k | APNIC | ID | 10th Jun 2008 |
| 114.141.0.0/20 | 4.1k | APNIC | KR | 13th Jun 2008 |
| 114.141.16.0/21 | 2k | APNIC | KR | 13th Jun 2008 |
| 114.141.40.0/21 | 2k | APNIC | KR | 16th Jun 2008 |
| 114.141.64.0/21 | 2k | APNIC | CN | 12th Apr 2011 |
| 114.141.80.0/22 | 1k | APNIC | CN | 19th Nov 2015 |
| 114.141.84.0/22 | 1k | APNIC | CN | 19th Nov 2015 |
| 114.142.136.0/21 | 2k | APNIC | CN | 24th Jun 2008 |
| 114.198.248.0/21 | 2k | APNIC | CN | 12th Apr 2011 |
| 114.208.0.0/14 | 262k | APNIC | CN | 20th Jun 2008 |
| 114.29.160.0/19 | 8.2k | APNIC | KR | 22nd Apr 2008 |
| 114.29.248.0/22 | 1k | APNIC | IN | 6th Jan 2016 |
| 114.31.64.0/22 | 1k | APNIC | CN | 19th Nov 2015 |
| 114.31.68.0/22 | 1k | APNIC | CN | 19th Nov 2015 |
| 114.68.0.0/16 | 65.5k | APNIC | CN | 9th May 2008 |
| 114.69.241.0/24 | 256 | ARIN |  CA | 18th Nov 2024 |
| 114.78.0.0/16 | 65.5k | APNIC | AU | 14th May 2008 |
| 114.79.192.0/18 | 16.4k | APNIC | IN | 11th Dec 2009 |
| 114.79.64.0/18 | 16.4k | APNIC | CN | 12th Apr 2011 |
| 115.104.0.0/14 | 262k | APNIC | CN | 28th Jul 2008 |
| 115.146.96.0/20 | 4.1k | APNIC | MY | 22nd Aug 2008 |
| 115.166.132.0/22 | 1k | APNIC | IN | 15th Dec 2015 |
| 115.166.144.0/20 | 4.1k | APNIC |  JP | 1st Sept 2008 |
| 115.166.64.0/19 | 8.2k | APNIC | CN | 12th Apr 2011 |
| 115.167.80.0/20 | 4.1k | APNIC | SG | 2nd Sept 2008 |
| 115.181.0.0/16 | 65.5k | APNIC | CN | 4th Sept 2008 |
| 115.184.0.0/15 | 131k | APNIC | IN | 8th Sept 2008 |
| 115.187.0.0/22 | 1k | APNIC | CN | 30th Nov 2015 |