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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
85,244 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 195.106.0.0/16 | 65.5k | RIPE NCC |  GB | 11th Apr 1997 |
| 195.110.14.0/23 | 512 | RIPE NCC |  DE | 5th Jan 2007 |
| 195.110.22.0/23 | 512 | RIPE NCC |  NO | 5th Nov 2019 |
| 195.110.30.0/23 | 512 | RIPE NCC |  FR | 24th Apr 2007 |
| 195.110.36.0/23 | 512 | RIPE NCC | GB | 10th Sept 2009 |
| 195.112.160.0/19 | 8.2k | RIPE NCC | DE | 26th Jan 1998 |
| 195.118.0.0/16 | 65.5k | RIPE NCC |  NL | 21st Aug 1996 |
| 195.12.39.0/24 | 256 | RIPE NCC |  CZ | 10th Jan 2020 |
| 195.123.128.0/19 | 8.2k | RIPE NCC |  ES | 4th Apr 1997 |
| 195.123.248.0/22 | 1k | RIPE NCC |  UA | 4th Apr 1997 |
| 195.123.64.0/19 | 8.2k | RIPE NCC | ES | 4th Apr 1997 |
| 195.128.112.0/21 | 2k | RIPE NCC |  PL | 25th Jul 2003 |
| 195.128.129.0/24 | 256 | RIPE NCC | NL | 4th Apr 2011 |
| 195.128.131.0/24 | 256 | RIPE NCC |  IT | 11th Dec 2024 |
| 195.128.155.0/24 | 256 | RIPE NCC | CZ | 11th Apr 2011 |
| 195.128.156.0/24 | 256 | RIPE NCC | GB | 11th Apr 2011 |
| 195.128.164.0/23 | 512 | RIPE NCC |  CH | 22nd Sept 2006 |
| 195.128.176.0/23 | 512 | RIPE NCC |  IL | 15th Apr 2004 |
| 195.128.230.0/24 | 256 | RIPE NCC |  BE | 17th May 2004 |
| 195.128.236.0/23 | 512 | RIPE NCC | NL | 18th May 2004 |
| 195.128.252.0/23 | 512 | RIPE NCC | UA | 24th May 2004 |
| 195.128.4.0/22 | 1k | APNIC |  BN | 17th Jun 2004 |
| 195.13.32.0/23 | 512 | RIPE NCC | FR | 7th Feb 2001 |
| 195.13.35.0/24 | 256 | RIPE NCC | IT | 4th May 2026 |
| 195.13.36.0/24 | 256 | RIPE NCC |  FI | 4th May 2026 |
| 195.13.37.128/26 | 64 | RIPE NCC | FR | 6th Feb 2026 |
| 195.13.37.192/26 | 64 | RIPE NCC | GB | 20th Feb 2026 |
| 195.13.44.0/23 | 512 | RIPE NCC |  US | 1st Nov 2019 |
| 195.13.46.0/25 | 128 | RIPE NCC | PL | 16th Jan 2001 |
| 195.13.46.128/25 | 128 | RIPE NCC |  DK | 19th Nov 2004 |
| 195.13.47.0/24 | 256 | RIPE NCC | FR | 22nd Nov 2019 |
| 195.130.193.0/24 | 256 | RIPE NCC | DK | 8th Jan 2009 |
| 195.130.204.0/24 | 256 | RIPE NCC |  AT | 25th Nov 2019 |
| 195.130.206.0/24 | 256 | RIPE NCC | AT | 25th Nov 2019 |
| 195.130.211.0/24 | 256 | RIPE NCC |  IS | 20th Jan 2009 |
| 195.130.216.0/24 | 256 | RIPE NCC |  RU | 21st Jan 2009 |
| 195.130.220.0/24 | 256 | RIPE NCC | CZ | 23rd Jun 2025 |
| 195.133.160.0/19 | 8.2k | RIPE NCC | ES | 15th Apr 1997 |
| 195.133.56.0/23 | 512 | RIPE NCC | RU | 15th Apr 1997 |
| 195.133.60.0/23 | 512 | RIPE NCC | RU | 15th Apr 1997 |
| 195.133.96.0/19 | 8.2k | RIPE NCC | ES | 15th Apr 1997 |
| 195.134.184.0/21 | 2k | RIPE NCC |  SA | 8th Mar 2012 |
| 195.135.194.0/24 | 256 | RIPE NCC | US | 14th Jan 2009 |
| 195.135.204.0/22 | 1k | RIPE NCC | RU | 10th Jul 2003 |
| 195.135.208.0/22 | 1k | RIPE NCC | GB | 11th Jul 2003 |
| 195.135.248.0/22 | 1k | RIPE NCC | ES | 9th Sept 2011 |
| 195.137.161.0/24 | 256 | RIPE NCC | PL | 14th Sept 2005 |
| 195.137.176.0/24 | 256 | RIPE NCC | GB | 22nd Sept 2005 |
| 195.137.179.0/24 | 256 | RIPE NCC | NL | 23rd Sept 2005 |
| 195.137.180.0/24 | 256 | RIPE NCC |  BY | 23rd Sept 2005 |