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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 Iran
709 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 103.111.71.0/24 | 256 | RIPE NCC |  IR | 14th Mar 2018 |
| 109.230.192.0/23 | 512 | RIPE NCC | IR | 24th Feb 2010 |
| 109.230.246.0/24 | 256 | RIPE NCC | IR | 24th Feb 2010 |
| 109.230.247.0/24 | 256 | RIPE NCC | IR | 24th Feb 2010 |
| 109.230.251.0/24 | 256 | RIPE NCC | IR | 24th Feb 2010 |
| 109.68.217.0/24 | 256 | RIPE NCC | IR | 9th Jul 2026 |
| 134.255.196.0/23 | 512 | RIPE NCC | IR | 8th Nov 2011 |
| 134.255.245.0/24 | 256 | RIPE NCC | IR | 8th Nov 2011 |
| 134.255.246.0/24 | 256 | RIPE NCC | IR | 8th Nov 2011 |
| 146.66.128.0/22 | 1k | RIPE NCC | IR | 12th Jul 2011 |
| 146.66.132.0/23 | 512 | RIPE NCC | IR | 12th Jul 2011 |
| 164.138.202.0/24 | 256 | RIPE NCC | IR | 10th Jul 2025 |
| 164.40.233.0/24 | 256 | RIPE NCC | IR | 7th May 2026 |
| 176.105.245.0/24 | 256 | RIPE NCC | IR | 15th Aug 2022 |
| 176.124.64.0/22 | 1k | RIPE NCC | IR | 6th Sept 2012 |
| 176.223.80.0/21 | 2k | RIPE NCC | IR | 29th Nov 2011 |
| 176.56.152.0/22 | 1k | RIPE NCC | IR | 30th May 2011 |
| 178.211.145.0/24 | 256 | RIPE NCC | IR | 25th Jan 2022 |
| 178.216.252.0/22 | 1k | RIPE NCC | IR | 10th May 2010 |
| 185.1.77.0/24 | 256 | RIPE NCC | IR | 26th Jul 2016 |
| 185.109.128.0/22 | 1k | RIPE NCC | IR | 16th Jul 2015 |
| 185.119.199.0/24 | 256 | RIPE NCC | IR | 7th Mar 2023 |
| 185.120.120.0/22 | 1k | RIPE NCC | IR | 8th Oct 2015 |
| 185.127.232.0/22 | 1k | RIPE NCC | IR | 23rd Nov 2015 |
| 185.130.101.0/24 | 256 | RIPE NCC | IR | 25th Sept 2025 |
| 185.135.46.0/24 | 256 | RIPE NCC | IR | 7th Mar 2023 |
| 185.141.244.0/22 | 1k | RIPE NCC | IR | 4th Mar 2016 |
| 185.150.108.0/22 | 1k | RIPE NCC | IR | 2nd May 2016 |
| 185.151.236.0/22 | 1k | RIPE NCC | IR | 13th May 2016 |
| 185.154.190.0/24 | 256 | RIPE NCC | IR | 12th Jan 2024 |
| 185.155.229.0/24 | 256 | RIPE NCC | IR | 11th Aug 2025 |
| 185.159.189.0/24 | 256 | RIPE NCC | IR | 18th Jan 2023 |
| 185.161.250.0/24 | 256 | RIPE NCC | IR | 24th Feb 2023 |
| 185.165.40.0/22 | 1k | RIPE NCC | IR | 24th Aug 2016 |
| 185.167.100.0/22 | 1k | RIPE NCC | IR | 12th Sept 2016 |
| 185.174.200.0/22 | 1k | RIPE NCC | IR | 25th Oct 2016 |
| 185.18.156.0/22 | 1k | RIPE NCC | IR | 12th Feb 2013 |
| 185.184.48.0/22 | 1k | RIPE NCC | IR | 2nd Jan 2017 |
| 185.199.64.0/22 | 1k | RIPE NCC | IR | 13th Apr 2017 |
| 185.201.221.0/24 | 256 | RIPE NCC | IR | 17th Jun 2026 |
| 185.207.52.0/22 | 1k | RIPE NCC | IR | 7th Jun 2017 |
| 185.211.84.0/22 | 1k | RIPE NCC | IR | 3rd Jul 2017 |
| 185.221.112.0/22 | 1k | RIPE NCC | IR | 18th Sept 2017 |
| 185.229.135.0/24 | 256 | RIPE NCC | IR | 7th Mar 2023 |
| 185.236.45.0/24 | 256 | RIPE NCC | IR | 9th Feb 2021 |
| 185.238.20.0/22 | 1k | RIPE NCC | IR | 20th Dec 2017 |
| 185.24.228.0/22 | 1k | RIPE NCC | IR | 24th Apr 2013 |
| 185.244.52.0/22 | 1k | RIPE NCC | IR | 31st Jan 2018 |
| 185.252.84.0/24 | 256 | RIPE NCC | IR | 7th Mar 2023 |
| 185.254.166.0/24 | 256 | RIPE NCC | IR | 19th Mar 2021 |