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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 in Spain
907 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 194.15.195.0/24 | 256 | RIPE NCC |  ES | 20th Nov 2019 |
| 194.15.219.0/24 | 256 | RIPE NCC | ES | 20th Nov 2019 |
| 194.15.232.0/24 | 256 | RIPE NCC | ES | 20th Nov 2019 |
| 194.150.180.0/23 | 512 | RIPE NCC | ES | 31st Oct 2019 |
| 194.165.42.0/24 | 256 | RIPE NCC | ES | 17th Apr 2012 |
| 194.169.201.0/24 | 256 | RIPE NCC | ES | 3rd Dec 2006 |
| 194.26.1.0/24 | 256 | RIPE NCC | ES | 20th Nov 2019 |
| 194.34.136.0/23 | 512 | RIPE NCC | ES | 21st Oct 2019 |
| 194.34.62.0/23 | 512 | RIPE NCC | ES | 21st Oct 2019 |
| 194.5.56.0/22 | 1k | RIPE NCC | ES | 14th May 2018 |
| 194.62.115.0/24 | 256 | RIPE NCC | ES | 25th Mar 2026 |
| 194.69.240.0/21 | 2k | RIPE NCC | ES | 4th Dec 1996 |
| 194.69.252.0/24 | 256 | RIPE NCC | ES | 4th Dec 1996 |
| 194.69.255.0/24 | 256 | RIPE NCC | ES | 4th Dec 1996 |
| 195.123.128.0/19 | 8.2k | RIPE NCC | ES | 4th Apr 1997 |
| 195.123.64.0/19 | 8.2k | RIPE NCC | ES | 4th Apr 1997 |
| 195.133.160.0/19 | 8.2k | RIPE NCC | ES | 15th Apr 1997 |
| 195.133.96.0/19 | 8.2k | RIPE NCC | ES | 15th Apr 1997 |
| 195.135.248.0/22 | 1k | RIPE NCC | ES | 9th Sept 2011 |
| 195.149.113.0/24 | 256 | RIPE NCC | ES | 12th Sept 2003 |
| 195.182.30.0/24 | 256 | RIPE NCC | ES | 2nd Jan 2006 |
| 195.189.157.0/24 | 256 | RIPE NCC | ES | 18th Jul 2023 |
| 195.234.166.0/24 | 256 | RIPE NCC | ES | 20th Sept 2002 |
| 195.234.167.0/24 | 256 | RIPE NCC | ES | 20th Sept 2002 |
| 195.242.136.0/23 | 512 | RIPE NCC | ES | 6th Dec 2006 |
| 195.245.212.0/24 | 256 | RIPE NCC | ES | 11th Dec 2002 |
| 195.47.209.0/24 | 256 | RIPE NCC | ES | 11th Apr 2003 |
| 195.47.236.0/24 | 256 | RIPE NCC | ES | 8th May 2003 |
| 195.60.81.64/26 | 64 | RIPE NCC | ES | 19th Jul 2007 |
| 195.78.114.0/24 | 256 | RIPE NCC | ES | 14th Oct 2024 |
| 195.8.118.0/23 | 512 | RIPE NCC | ES | 1st Nov 2019 |
| 195.85.200.0/24 | 256 | RIPE NCC | ES | 5th Jun 2003 |
| 198.206.139.0/24 | 256 | RIPE NCC | ES | 22nd Oct 1993 |
| 199.103.73.0/24 | 256 | ARIN | ES | 25th Jun 1994 |
| 199.103.81.0/24 | 256 | ARIN | ES | 25th Jun 1994 |
| 2.152.128.0/19 | 8.2k | RIPE NCC | ES | 3rd Nov 2010 |
| 2.152.16.0/20 | 4.1k | RIPE NCC | ES | 3rd Nov 2010 |
| 2.152.160.0/20 | 4.1k | RIPE NCC | ES | 3rd Nov 2010 |
| 2.152.180.0/22 | 1k | RIPE NCC | ES | 3rd Nov 2010 |
| 2.152.184.0/21 | 2k | RIPE NCC | ES | 3rd Nov 2010 |
| 2.152.192.0/20 | 4.1k | RIPE NCC | ES | 3rd Nov 2010 |
| 2.152.208.0/22 | 1k | RIPE NCC | ES | 3rd Nov 2010 |
| 2.152.224.0/20 | 4.1k | RIPE NCC | ES | 3rd Nov 2010 |
| 2.152.240.0/22 | 1k | RIPE NCC | ES | 3rd Nov 2010 |
| 2.152.244.0/23 | 512 | RIPE NCC | ES | 3rd Nov 2010 |
| 2.152.247.0/24 | 256 | RIPE NCC | ES | 3rd Nov 2010 |
| 2.152.250.0/23 | 512 | RIPE NCC | ES | 3rd Nov 2010 |
| 2.152.252.0/22 | 1k | RIPE NCC | ES | 3rd Nov 2010 |
| 2.152.32.0/24 | 256 | RIPE NCC | ES | 3rd Nov 2010 |
| 2.152.34.0/23 | 512 | RIPE NCC | ES | 3rd Nov 2010 |