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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 unannounced space registered through RIPE NCC, largest first.
Unannounced blocks in Spain
903 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 103.229.170.0/23 | 512 | RIPE NCC |  ES | 16th Apr 2014 |
| 109.230.222.0/24 | 256 | RIPE NCC | ES | 24th Feb 2010 |
| 134.255.241.0/24 | 256 | RIPE NCC | ES | 8th Nov 2011 |
| 152.114.197.0/24 | 256 | RIPE NCC | ES | 1st Jan 1984 |
| 152.114.198.0/23 | 512 | RIPE NCC | ES | 1st Jan 1984 |
| 152.89.136.0/22 | 1k | RIPE NCC | ES | 25th Jan 2019 |
| 155.137.16.0/22 | 1k | RIPE NCC | ES | 12th Nov 1991 |
| 155.137.8.0/21 | 2k | RIPE NCC | ES | 12th Nov 1991 |
| 157.173.8.0/21 | 2k | RIPE NCC | ES | 1st Sept 1993 |
| 162.33.200.0/21 | 2k | RIPE NCC | ES | 20th Jul 1992 |
| 167.160.24.0/23 | 512 | RIPE NCC | ES | 3rd Mar 2014 |
| 176.100.200.0/21 | 2k | RIPE NCC | ES | 31st Oct 2011 |
| 176.118.176.0/24 | 256 | RIPE NCC | ES | 29th Sept 2025 |
| 176.125.250.0/23 | 512 | RIPE NCC | ES | 17th Oct 2018 |
| 176.126.110.0/24 | 256 | RIPE NCC | ES | 26th Oct 2021 |
| 176.126.176.0/20 | 4.1k | RIPE NCC | ES | 14th Sept 2012 |
| 176.32.248.0/21 | 2k | RIPE NCC | ES | 26th May 2011 |
| 176.96.192.0/19 | 8.2k | RIPE NCC | ES | 29th Jul 2011 |
| 185.1.143.0/24 | 256 | RIPE NCC | ES | 10th Sept 2019 |
| 185.1.20.0/24 | 256 | RIPE NCC | ES | 16th Oct 2013 |
| 185.1.22.0/24 | 256 | RIPE NCC | ES | 5th Apr 2018 |
| 185.1.237.0/24 | 256 | RIPE NCC | ES | 28th Feb 2022 |
| 185.1.68.0/24 | 256 | RIPE NCC | ES | 17th Sept 2021 |
| 185.1.90.0/24 | 256 | RIPE NCC | ES | 12th May 2020 |
| 185.101.164.0/22 | 1k | RIPE NCC | ES | 26th May 2015 |
| 185.120.252.0/22 | 1k | RIPE NCC | ES | 9th Oct 2015 |
| 185.129.224.0/22 | 1k | RIPE NCC | ES | 3rd Dec 2015 |
| 185.130.103.0/24 | 256 | RIPE NCC | ES | 29th Sept 2025 |
| 185.132.190.0/23 | 512 | RIPE NCC | ES | 23rd Dec 2015 |
| 185.132.192.0/22 | 1k | RIPE NCC | ES | 23rd Dec 2015 |
| 185.137.44.0/22 | 1k | RIPE NCC | ES | 3rd Feb 2016 |
| 185.141.44.0/22 | 1k | RIPE NCC | ES | 1st Mar 2016 |
| 185.145.224.0/22 | 1k | RIPE NCC | ES | 5th Apr 2016 |
| 185.149.72.0/22 | 1k | RIPE NCC | ES | 26th Apr 2016 |
| 185.155.230.0/24 | 256 | RIPE NCC | ES | 11th Aug 2025 |
| 185.156.88.0/22 | 1k | RIPE NCC | ES | 15th Jun 2016 |
| 185.156.92.0/22 | 1k | RIPE NCC | ES | 15th Jun 2016 |
| 185.169.16.0/22 | 1k | RIPE NCC | ES | 21st Sept 2016 |
| 185.170.147.0/24 | 256 | RIPE NCC | ES | 13th Jan 2020 |
| 185.173.44.0/22 | 1k | RIPE NCC | ES | 8th Apr 2019 |
| 185.178.168.0/24 | 256 | RIPE NCC | ES | 22nd Nov 2016 |
| 185.178.170.0/24 | 256 | RIPE NCC | ES | 22nd Nov 2016 |
| 185.179.244.0/24 | 256 | RIPE NCC | ES | 14th Aug 2020 |
| 185.186.200.0/22 | 1k | RIPE NCC | ES | 20th Jan 2017 |
| 185.188.209.0/24 | 256 | RIPE NCC | ES | 6th Feb 2017 |
| 185.193.45.0/24 | 256 | RIPE NCC | ES | 30th Jun 2021 |
| 185.207.40.0/22 | 1k | RIPE NCC | ES | 7th Jun 2017 |
| 185.21.44.0/22 | 1k | RIPE NCC | ES | 12th Mar 2013 |
| 185.214.80.0/23 | 512 | RIPE NCC | ES | 25th Jul 2017 |
| 185.216.56.0/23 | 512 | RIPE NCC | ES | 4th Aug 2017 |