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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
85,108 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 185.216.108.0/22 | 1k | RIPE NCC |  GB | 4th Aug 2017 |
| 185.216.13.0/24 | 256 | RIPE NCC |  MD | 13th Mar 2023 |
| 185.216.136.0/24 | 256 | RIPE NCC |  CH | 7th Aug 2017 |
| 185.216.137.0/24 | 256 | RIPE NCC | GB | 7th Aug 2017 |
| 185.216.224.0/22 | 1k | RIPE NCC |  DE | 9th Aug 2017 |
| 185.216.228.0/23 | 512 | RIPE NCC | DE | 9th Aug 2017 |
| 185.216.48.0/24 | 256 | RIPE NCC | GB | 16th Nov 2020 |
| 185.216.56.0/23 | 512 | RIPE NCC |  ES | 4th Aug 2017 |
| 185.216.88.0/22 | 1k | RIPE NCC |  IT | 4th Aug 2017 |
| 185.217.100.0/22 | 1k | RIPE NCC |  SA | 14th Aug 2017 |
| 185.217.104.0/22 | 1k | RIPE NCC | GB | 14th Aug 2017 |
| 185.217.112.0/22 | 1k | RIPE NCC | ES | 14th Aug 2017 |
| 185.217.120.0/22 | 1k | RIPE NCC |  FR | 14th Aug 2017 |
| 185.217.129.0/24 | 256 | RIPE NCC |  KZ | 6th Dec 2021 |
| 185.217.132.0/22 | 1k | RIPE NCC | GB | 14th Aug 2017 |
| 185.217.148.0/22 | 1k | RIPE NCC | DE | 15th Aug 2017 |
| 185.217.160.0/22 | 1k | RIPE NCC |  NL | 16th Aug 2017 |
| 185.217.167.0/24 | 256 | RIPE NCC |  RU | 20th Nov 2020 |
| 185.217.36.0/24 | 256 | RIPE NCC | FR | 17th Nov 2020 |
| 185.217.4.0/24 | 256 | RIPE NCC | SA | 26th Jun 2023 |
| 185.217.7.0/24 | 256 | RIPE NCC | RU | 28th Jun 2023 |
| 185.217.88.0/22 | 1k | RIPE NCC |  IQ | 14th Aug 2017 |
| 185.218.107.0/24 | 256 | RIPE NCC | DE | 12th Apr 2021 |
| 185.218.112.0/22 | 1k | RIPE NCC |  IE | 22nd Aug 2017 |
| 185.218.116.0/22 | 1k | RIPE NCC | CH | 22nd Aug 2017 |
| 185.218.128.0/22 | 1k | RIPE NCC | DE | 22nd Aug 2017 |
| 185.218.172.0/22 | 1k | RIPE NCC | FR | 23rd Aug 2017 |
| 185.218.176.0/22 | 1k | RIPE NCC |  SG | 24th Aug 2017 |
| 185.218.3.0/24 | 256 | RIPE NCC | MD | 6th Jul 2021 |
| 185.218.52.0/22 | 1k | RIPE NCC | DE | 21st Aug 2017 |
| 185.219.128.0/24 | 256 | RIPE NCC |  IS | 4th Sept 2017 |
| 185.219.129.0/24 | 256 | RIPE NCC |  PT | 4th Sept 2017 |
| 185.219.131.0/24 | 256 | RIPE NCC | PT | 4th Sept 2017 |
| 185.219.200.0/22 | 1k | RIPE NCC |  PL | 6th Sept 2017 |
| 185.219.88.0/24 | 256 | RIPE NCC |  EE | 30th Aug 2017 |
| 185.22.164.0/22 | 1k | RIPE NCC | GB | 2nd Apr 2013 |
| 185.220.104.0/22 | 1k | RIPE NCC | NL | 12th Sept 2017 |
| 185.220.140.0/22 | 1k | RIPE NCC |  US | 13th Sept 2017 |
| 185.220.28.0/22 | 1k | RIPE NCC |  CZ | 8th Sept 2017 |
| 185.220.94.0/23 | 512 | RIPE NCC |  LV | 12th Sept 2017 |
| 185.220.96.0/22 | 1k | RIPE NCC | DE | 12th Sept 2017 |
| 185.221.112.0/22 | 1k | RIPE NCC |  IR | 18th Sept 2017 |
| 185.221.116.0/22 | 1k | RIPE NCC | RU | 18th Sept 2017 |
| 185.221.120.0/22 | 1k | RIPE NCC | RU | 18th Sept 2017 |
| 185.221.136.0/22 | 1k | RIPE NCC | DE | 18th Sept 2017 |
| 185.221.232.0/22 | 1k | RIPE NCC | IS | 21st Sept 2017 |
| 185.221.24.0/22 | 1k | RIPE NCC | ES | 14th Sept 2017 |
| 185.221.240.0/22 | 1k | RIPE NCC | IT | 21st Sept 2017 |
| 185.221.4.0/22 | 1k | RIPE NCC | GB | 14th Sept 2017 |
| 185.221.48.0/22 | 1k | RIPE NCC | DE | 15th Sept 2017 |