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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
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Countries with unannounced space registered through RIPE NCC, largest first.
Unannounced blocks in Ireland
244 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 107.191.68.0/24 | 256 | RIPE NCC |  IE | 14th May 2014 |
| 109.71.79.0/24 | 256 | RIPE NCC | IE | 23rd Jun 2020 |
| 130.255.24.0/22 | 1k | RIPE NCC | IE | 28th Oct 2011 |
| 137.191.0.0/17 | 32.8k | RIPE NCC | IE | 1st Sept 1993 |
| 137.191.128.0/18 | 16.4k | RIPE NCC | IE | 1st Sept 1993 |
| 137.191.192.0/20 | 4.1k | RIPE NCC | IE | 1st Sept 1993 |
| 137.191.208.0/21 | 2k | RIPE NCC | IE | 1st Sept 1993 |
| 137.191.216.0/22 | 1k | RIPE NCC | IE | 1st Sept 1993 |
| 137.191.220.0/23 | 512 | RIPE NCC | IE | 1st Sept 1993 |
| 137.191.222.0/24 | 256 | RIPE NCC | IE | 1st Sept 1993 |
| 146.247.40.0/21 | 2k | RIPE NCC | IE | 14th Jul 2011 |
| 148.59.115.0/24 | 256 | RIPE NCC | IE | 8th Apr 1991 |
| 149.170.59.0/24 | 256 | RIPE NCC | IE | 9th May 1991 |
| 161.104.184.0/21 | 2k | RIPE NCC | IE | 24th Jun 1992 |
| 176.116.6.0/24 | 256 | RIPE NCC | IE | 25th Oct 2021 |
| 176.124.246.0/24 | 256 | RIPE NCC | IE | 13th Sept 2012 |
| 185.1.109.0/24 | 256 | RIPE NCC | IE | 6th Dec 2017 |
| 185.105.164.0/22 | 1k | RIPE NCC | IE | 22nd Jun 2015 |
| 185.116.64.0/22 | 1k | RIPE NCC | IE | 7th Sept 2015 |
| 185.12.80.0/22 | 1k | RIPE NCC | IE | 5th Dec 2012 |
| 185.153.235.0/24 | 256 | RIPE NCC | IE | 30th Sept 2020 |
| 185.167.180.0/24 | 256 | RIPE NCC | IE | 17th Apr 2020 |
| 185.181.172.0/22 | 1k | RIPE NCC | IE | 12th Dec 2016 |
| 185.190.200.0/22 | 1k | RIPE NCC | IE | 20th Feb 2017 |
| 185.195.164.0/22 | 1k | RIPE NCC | IE | 21st Mar 2017 |
| 185.20.92.0/22 | 1k | RIPE NCC | IE | 4th Mar 2013 |
| 185.200.84.0/22 | 1k | RIPE NCC | IE | 21st Apr 2017 |
| 185.210.164.0/22 | 1k | RIPE NCC | IE | 28th Jun 2017 |
| 185.212.228.0/22 | 1k | RIPE NCC | IE | 13th Jul 2017 |
| 185.218.112.0/22 | 1k | RIPE NCC | IE | 22nd Aug 2017 |
| 185.224.20.0/22 | 1k | RIPE NCC | IE | 5th Oct 2017 |
| 185.227.208.0/22 | 1k | RIPE NCC | IE | 24th Oct 2017 |
| 185.236.44.0/24 | 256 | RIPE NCC | IE | 8th Feb 2021 |
| 185.237.52.0/22 | 1k | RIPE NCC | IE | 15th Dec 2017 |
| 185.239.173.0/24 | 256 | RIPE NCC | IE | 4th Jan 2018 |
| 185.241.132.0/22 | 1k | RIPE NCC | IE | 16th Jan 2018 |
| 185.248.60.0/22 | 1k | RIPE NCC | IE | 6th Mar 2018 |
| 185.25.84.0/22 | 1k | RIPE NCC | IE | 2nd May 2013 |
| 185.254.164.0/24 | 256 | RIPE NCC | IE | 19th Mar 2021 |
| 185.4.192.0/22 | 1k | RIPE NCC | IE | 27th Sept 2012 |
| 185.47.72.0/22 | 1k | RIPE NCC | IE | 10th Feb 2014 |
| 185.62.216.0/22 | 1k | RIPE NCC | IE | 3rd Jul 2014 |
| 185.71.160.0/22 | 1k | RIPE NCC | IE | 30th Sept 2014 |
| 185.79.160.0/22 | 1k | RIPE NCC | IE | 2nd Dec 2014 |
| 185.90.76.0/22 | 1k | RIPE NCC | IE | 4th Mar 2015 |
| 185.98.172.0/22 | 1k | RIPE NCC | IE | 30th Apr 2015 |
| 188.65.163.0/24 | 256 | RIPE NCC | IE | 6th Dec 2023 |
| 192.104.154.0/24 | 256 | RIPE NCC | IE | 30th May 1991 |
| 192.122.216.0/24 | 256 | RIPE NCC | IE | 15th May 1992 |
| 192.135.225.0/24 | 256 | RIPE NCC | IE | 30th Dec 1991 |