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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
85,108 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 185.26.20.0/22 | 1k | RIPE NCC |  NL | 14th May 2013 |
| 185.26.214.0/24 | 256 | RIPE NCC | NL | 24th Feb 2025 |
| 185.26.215.0/24 | 256 | RIPE NCC |  FI | 24th Feb 2025 |
| 185.26.96.0/22 | 1k | RIPE NCC |  DE | 17th May 2013 |
| 185.27.112.0/22 | 1k | RIPE NCC |  DK | 30th May 2013 |
| 185.27.176.0/22 | 1k | RIPE NCC |  GB | 3rd Jun 2013 |
| 185.27.64.0/22 | 1k | RIPE NCC |  LI | 29th May 2013 |
| 185.28.117.0/24 | 256 | RIPE NCC |  ES | 7th Mar 2023 |
| 185.28.118.0/24 | 256 | RIPE NCC | ES | 7th Mar 2023 |
| 185.28.136.0/22 | 1k | RIPE NCC |  SE | 13th Jun 2013 |
| 185.28.220.0/22 | 1k | RIPE NCC | NL | 18th Jun 2013 |
| 185.28.24.0/22 | 1k | RIPE NCC |  SK | 10th Jun 2013 |
| 185.28.45.0/24 | 256 | RIPE NCC | NL | 17th Feb 2025 |
| 185.28.56.0/22 | 1k | RIPE NCC | NL | 11th Jun 2013 |
| 185.28.64.0/22 | 1k | RIPE NCC |  IT | 11th Jun 2013 |
| 185.29.172.0/22 | 1k | RIPE NCC | GB | 28th Jun 2013 |
| 185.29.208.0/24 | 256 | RIPE NCC | GB | 1st Oct 2024 |
| 185.29.209.0/24 | 256 | RIPE NCC | IT | 1st Oct 2024 |
| 185.29.228.0/23 | 512 | RIPE NCC |  AU | 3rd Jul 2013 |
| 185.29.96.0/22 | 1k | RIPE NCC | IT | 2nd Jul 2013 |
| 185.3.16.0/22 | 1k | RIPE NCC |  RU | 19th Sept 2012 |
| 185.3.244.0/22 | 1k | RIPE NCC |  HU | 24th Sept 2012 |
| 185.3.85.0/24 | 256 | RIPE NCC | DE | 20th Sept 2012 |
| 185.30.148.0/22 | 1k | RIPE NCC |  SA | 11th Jul 2013 |
| 185.30.216.0/22 | 1k | RIPE NCC |  FR | 17th Jul 2013 |
| 185.30.240.0/22 | 1k | RIPE NCC | ES | 18th Jul 2013 |
| 185.30.248.0/22 | 1k | RIPE NCC |  JO | 18th Jul 2013 |
| 185.30.36.0/22 | 1k | RIPE NCC |  LB | 4th Jul 2013 |
| 185.30.88.0/22 | 1k | RIPE NCC |  AZ | 9th Jul 2013 |
| 185.31.10.0/24 | 256 | RIPE NCC | NL | 2nd Jul 2024 |
| 185.31.202.0/24 | 256 | RIPE NCC |  LT | 5th Dec 2023 |
| 185.31.203.0/24 | 256 | RIPE NCC |  CZ | 5th Dec 2023 |
| 185.31.232.0/22 | 1k | RIPE NCC | GB | 29th Jul 2013 |
| 185.31.252.0/22 | 1k | RIPE NCC | GB | 30th Jul 2013 |
| 185.31.9.0/24 | 256 | RIPE NCC |  EE | 2nd Jul 2024 |
| 185.32.140.0/22 | 1k | RIPE NCC | NL | 6th Aug 2013 |
| 185.32.192.0/22 | 1k | RIPE NCC |  US | 8th Aug 2013 |
| 185.32.236.0/22 | 1k | RIPE NCC |  LU | 14th Aug 2013 |
| 185.32.24.0/22 | 1k | RIPE NCC |  RO | 31st Jul 2013 |
| 185.32.40.0/22 | 1k | RIPE NCC | GB | 31st Jul 2013 |
| 185.32.71.0/24 | 256 | RIPE NCC |  PL | 4th Apr 2023 |
| 185.33.124.0/23 | 512 | RIPE NCC |  KW | 20th Aug 2013 |
| 185.33.126.0/24 | 256 | RIPE NCC | KW | 20th Aug 2013 |
| 185.33.16.0/22 | 1k | RIPE NCC | LU | 15th Aug 2013 |
| 185.33.168.0/22 | 1k | RIPE NCC |  PS | 22nd Aug 2013 |
| 185.33.20.0/22 | 1k | RIPE NCC |  CH | 15th Aug 2013 |
| 185.33.240.0/22 | 1k | RIPE NCC | SE | 26th Aug 2013 |
| 185.33.82.0/23 | 512 | RIPE NCC | HU | 16th Aug 2013 |
| 185.34.100.0/24 | 256 | RIPE NCC | DE | 10th Jun 2021 |
| 185.34.112.0/22 | 1k | RIPE NCC | DE | 2nd Sept 2013 |