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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
Browse by country
Countries with the most unannounced blocks, largest first.
Unannounced blocks
84,783 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 87.247.132.0/22 | 1k | RIPE NCC |  RU | 9th Oct 2018 |
| 87.247.240.0/21 | 2k | RIPE NCC |  DE | 3rd Feb 2006 |
| 87.248.192.0/19 | 8.2k | RIPE NCC |  US | 22nd Aug 2005 |
| 87.249.60.0/24 | 256 | RIPE NCC | RU | 25th Aug 2005 |
| 87.252.112.0/21 | 2k | RIPE NCC |  GB | 21st Sept 2005 |
| 87.252.120.0/22 | 1k | RIPE NCC | DE | 21st Sept 2005 |
| 87.252.124.0/23 | 512 | RIPE NCC | DE | 21st Sept 2005 |
| 87.253.176.0/21 | 2k | RIPE NCC | DE | 6th Oct 2005 |
| 87.255.96.0/19 | 8.2k | AFRINIC |  KE | 8th Nov 2005 |
| 87.58.0.0/19 | 8.2k | RIPE NCC |  NL | 20th May 2005 |
| 88.104.0.0/13 | 524k | ARIN | US | 20th Dec 2023 |
| 88.135.34.0/23 | 512 | RIPE NCC |  IR | 16th Nov 2009 |
| 88.144.0.0/15 | 131k | RIPE NCC |  SE | 18th Nov 2005 |
| 88.151.104.0/21 | 2k | RIPE NCC | RU | 28th Feb 2006 |
| 88.151.113.0/24 | 256 | RIPE NCC |  UA | 25th Apr 2022 |
| 88.210.28.0/24 | 256 | RIPE NCC | RU | 24th Nov 2005 |
| 88.210.51.0/24 | 256 | RIPE NCC | RU | 24th Nov 2005 |
| 88.218.124.0/22 | 1k | RIPE NCC |  BE | 17th Dec 2018 |
| 88.218.176.0/22 | 1k | RIPE NCC |  DK | 17th Dec 2018 |
| 88.218.208.0/22 | 1k | RIPE NCC | DE | 17th Dec 2018 |
| 88.218.244.0/22 | 1k | RIPE NCC | RU | 18th Dec 2018 |
| 88.218.36.0/22 | 1k | RIPE NCC |  IE | 14th Dec 2018 |
| 88.218.88.0/22 | 1k | RIPE NCC | GB | 14th Dec 2018 |
| 88.80.192.0/19 | 8.2k | RIPE NCC | DE | 1st Dec 2005 |
| 88.80.4.0/22 | 1k | RIPE NCC | SE | 24th Nov 2005 |
| 88.81.32.0/19 | 8.2k | RIPE NCC | RU | 2nd Oct 2009 |
| 88.82.128.0/19 | 8.2k | RIPE NCC | GB | 21st Dec 2005 |
| 88.82.224.0/19 | 8.2k | RIPE NCC | DE | 27th Dec 2005 |
| 89.104.107.0/24 | 256 | RIPE NCC | RU | 9th Mar 2006 |
| 89.104.119.0/24 | 256 | RIPE NCC | RU | 9th Mar 2006 |
| 89.104.125.0/24 | 256 | RIPE NCC | RU | 9th Mar 2006 |
| 89.104.32.0/19 | 8.2k | RIPE NCC | GB | 1st Mar 2006 |
| 89.105.128.0/21 | 2k | RIPE NCC | RU | 16th Mar 2006 |
| 89.105.72.0/22 | 1k | RIPE NCC |  IT | 15th Mar 2006 |
| 89.105.80.0/21 | 2k | RIPE NCC | IT | 15th Mar 2006 |
| 89.106.102.0/23 | 512 | RIPE NCC |  BG | 23rd Mar 2006 |
| 89.106.104.0/23 | 512 | RIPE NCC | BG | 23rd Mar 2006 |
| 89.106.144.0/21 | 2k | RIPE NCC | GB | 30th Mar 2006 |
| 89.106.201.0/24 | 256 | RIPE NCC |  CH | 25th Jan 2022 |
| 89.106.204.0/24 | 256 | RIPE NCC | NL | 25th Jan 2022 |
| 89.107.144.0/21 | 2k | RIPE NCC |  SK | 3rd May 2006 |
| 89.107.9.0/24 | 256 | RIPE NCC |  LT | 19th Aug 2021 |
| 89.116.153.0/24 | 256 | RIPE NCC | LT | 3rd May 2006 |
| 89.116.177.0/24 | 256 | RIPE NCC | LT | 3rd May 2006 |
| 89.116.184.0/23 | 512 | RIPE NCC | LT | 3rd May 2006 |
| 89.116.56.0/24 | 256 | RIPE NCC | LT | 3rd May 2006 |
| 89.116.8.0/22 | 1k | RIPE NCC | LT | 3rd May 2006 |
| 89.116.96.0/24 | 256 | RIPE NCC | LT | 3rd May 2006 |
| 89.117.11.0/24 | 256 | RIPE NCC | LT | 3rd May 2006 |
| 89.117.126.0/24 | 256 | RIPE NCC | LT | 3rd May 2006 |