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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 117.104.168.0/21 | 2k | APNIC |  CN | 12th Apr 2011 |
| 117.104.232.0/21 | 2k | APNIC |  IN | 27th Jul 2007 |
| 117.105.0.0/16 | 65.5k | APNIC |  SG | 30th Jul 2007 |
| 117.120.64.0/18 | 16.4k | APNIC | CN | 8th Aug 2007 |
| 117.121.192.0/21 | 2k | APNIC | CN | 6th Aug 2007 |
| 117.121.248.0/21 | 2k | APNIC |  AU | 16th Aug 2007 |
| 117.18.232.0/21 | 2k | APNIC | AU | 15th Jun 2007 |
| 117.18.80.0/21 | 2k | APNIC | AU | 7th Jun 2007 |
| 117.19.0.0/16 | 65.5k | APNIC |  TW | 12th Jun 2007 |
| 117.47.0.0/16 | 65.5k | APNIC |  TH | 18th Jun 2007 |
| 117.49.0.0/16 | 65.5k | APNIC | CN | 20th Jun 2007 |
| 117.53.156.0/22 | 1k | APNIC |  NZ | 3rd Jun 2010 |
| 117.53.176.0/20 | 4.1k | APNIC | CN | 2nd Jul 2007 |
| 117.53.48.0/20 | 4.1k | APNIC | CN | 25th Jun 2007 |
| 117.58.0.0/17 | 32.8k | APNIC | CN | 3rd Jul 2007 |
| 117.58.192.0/19 | 8.2k | APNIC |  PH | 6th Jul 2007 |
| 117.74.80.0/20 | 4.1k | APNIC | CN | 12th Apr 2011 |
| 117.75.0.0/16 | 65.5k | APNIC | CN | 9th Jul 2007 |
| 118.102.128.0/17 | 32.8k | APNIC | IN | 4th Sept 2007 |
| 118.102.32.0/21 | 2k | APNIC | CN | 12th Apr 2011 |
| 118.103.160.0/22 | 1k | APNIC | IN | 5th Jan 2016 |
| 118.103.168.0/22 | 1k | APNIC | CN | 5th Jan 2016 |
| 118.103.172.0/22 | 1k | APNIC | CN | 5th Jan 2016 |
| 118.103.176.0/22 | 1k | APNIC | CN | 5th Jan 2016 |
| 118.107.152.0/21 | 2k | APNIC |  JP | 11th Feb 2011 |
| 118.107.196.0/22 | 1k | APNIC |  MY | 13th Sept 2007 |
| 118.107.224.0/21 | 2k | APNIC |  HK | 13th Sept 2007 |
| 118.127.128.0/19 | 8.2k | APNIC | CN | 12th Apr 2011 |
| 118.127.168.0/21 | 2k | APNIC | AU | 21st Nov 2007 |
| 118.127.176.0/20 | 4.1k | APNIC | AU | 21st Nov 2007 |
| 118.184.0.0/17 | 32.8k | APNIC | CN | 19th Oct 2007 |
| 118.191.13.0/24 | 256 | APNIC | CN | 19th Oct 2007 |
| 118.191.14.0/23 | 512 | APNIC | CN | 19th Oct 2007 |
| 118.191.16.0/21 | 2k | APNIC | CN | 19th Oct 2007 |
| 118.191.160.0/20 | 4.1k | APNIC | CN | 19th Oct 2007 |
| 118.191.176.0/20 | 4.1k | APNIC | CN | 19th Oct 2007 |
| 118.191.209.0/24 | 256 | APNIC | CN | 19th Oct 2007 |
| 118.191.210.0/23 | 512 | APNIC | CN | 19th Oct 2007 |
| 118.191.212.0/22 | 1k | APNIC | CN | 19th Oct 2007 |
| 118.191.220.0/23 | 512 | APNIC | CN | 19th Oct 2007 |
| 118.191.222.0/24 | 256 | APNIC | CN | 19th Oct 2007 |
| 118.191.225.0/24 | 256 | APNIC | CN | 19th Oct 2007 |
| 118.191.226.0/23 | 512 | APNIC | CN | 19th Oct 2007 |
| 118.191.228.0/22 | 1k | APNIC | CN | 19th Oct 2007 |
| 118.191.232.0/21 | 2k | APNIC | CN | 19th Oct 2007 |
| 118.191.24.0/21 | 2k | APNIC | CN | 19th Oct 2007 |
| 118.191.32.0/19 | 8.2k | APNIC | CN | 19th Oct 2007 |
| 118.191.64.0/20 | 4.1k | APNIC | CN | 19th Oct 2007 |
| 118.191.80.0/22 | 1k | APNIC | CN | 19th Oct 2007 |
| 118.191.84.0/22 | 1k | APNIC | CN | 19th Oct 2007 |