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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 Norway
370 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 109.68.176.0/21 | 2k | RIPE NCC |  NO | 16th Sept 2009 |
| 143.223.177.0/24 | 256 | RIPE NCC | NO | 30th Jun 1990 |
| 144.176.0.0/16 | 65.5k | RIPE NCC | NO | 17th Dec 1990 |
| 144.179.0.0/16 | 65.5k | RIPE NCC | NO | 17th Dec 1990 |
| 144.180.0.0/16 | 65.5k | RIPE NCC | NO | 17th Dec 1990 |
| 144.181.0.0/16 | 65.5k | RIPE NCC | NO | 17th Dec 1990 |
| 146.224.0.0/16 | 65.5k | RIPE NCC | NO | 28th Feb 1991 |
| 147.112.0.0/16 | 65.5k | RIPE NCC | NO | 19th Mar 1991 |
| 148.140.0.0/16 | 65.5k | RIPE NCC | NO | 1st Sept 1993 |
| 159.58.0.0/16 | 65.5k | RIPE NCC | NO | 1st Sept 1993 |
| 159.81.0.0/16 | 65.5k | RIPE NCC | NO | 1st Sept 1993 |
| 167.150.120.0/24 | 256 | RIPE NCC | NO | 2nd Aug 1993 |
| 176.101.170.0/24 | 256 | RIPE NCC | NO | 25th Jun 2020 |
| 176.74.208.0/21 | 2k | RIPE NCC | NO | 17th Jun 2011 |
| 182.50.176.0/21 | 2k | APNIC | NO | 2nd Mar 2010 |
| 185.1.12.0/24 | 256 | RIPE NCC | NO | 11th Apr 2013 |
| 185.1.212.0/24 | 256 | RIPE NCC | NO | 18th Jun 2021 |
| 185.1.228.0/24 | 256 | RIPE NCC | NO | 1st Dec 2021 |
| 185.1.55.0/24 | 256 | RIPE NCC | NO | 21st Dec 2015 |
| 185.1.65.0/24 | 256 | RIPE NCC | NO | 25th Jan 2016 |
| 185.10.28.0/22 | 1k | RIPE NCC | NO | 15th Nov 2012 |
| 185.102.52.0/22 | 1k | RIPE NCC | NO | 27th May 2015 |
| 185.105.9.0/24 | 256 | RIPE NCC | NO | 5th Aug 2026 |
| 185.108.44.0/23 | 512 | RIPE NCC | NO | 8th Jul 2015 |
| 185.11.112.0/22 | 1k | RIPE NCC | NO | 28th Nov 2012 |
| 185.11.181.0/24 | 256 | RIPE NCC | NO | 29th Nov 2012 |
| 185.11.182.0/23 | 512 | RIPE NCC | NO | 29th Nov 2012 |
| 185.110.148.0/22 | 1k | RIPE NCC | NO | 24th Jul 2015 |
| 185.115.248.0/22 | 1k | RIPE NCC | NO | 4th Sept 2015 |
| 185.133.140.0/22 | 1k | RIPE NCC | NO | 5th Jan 2016 |
| 185.144.130.0/23 | 512 | RIPE NCC | NO | 23rd Mar 2016 |
| 185.145.189.0/24 | 256 | RIPE NCC | NO | 4th Apr 2016 |
| 185.146.200.0/22 | 1k | RIPE NCC | NO | 11th Apr 2016 |
| 185.148.16.0/22 | 1k | RIPE NCC | NO | 18th Apr 2016 |
| 185.175.96.0/22 | 1k | RIPE NCC | NO | 28th Oct 2016 |
| 185.187.24.0/22 | 1k | RIPE NCC | NO | 24th Jan 2017 |
| 185.197.210.0/24 | 256 | RIPE NCC | NO | 4th Apr 2017 |
| 185.20.104.0/22 | 1k | RIPE NCC | NO | 5th Mar 2013 |
| 185.20.244.0/22 | 1k | RIPE NCC | NO | 8th Mar 2013 |
| 185.223.100.0/22 | 1k | RIPE NCC | NO | 2nd Oct 2017 |
| 185.227.124.0/22 | 1k | RIPE NCC | NO | 24th Oct 2017 |
| 185.230.72.0/22 | 1k | RIPE NCC | NO | 7th Nov 2017 |
| 185.26.128.0/22 | 1k | RIPE NCC | NO | 21st May 2013 |
| 185.59.236.0/22 | 1k | RIPE NCC | NO | 4th Jun 2014 |
| 185.65.152.0/22 | 1k | RIPE NCC | NO | 30th Jul 2014 |
| 185.7.220.0/22 | 1k | RIPE NCC | NO | 24th Oct 2012 |
| 185.79.84.0/22 | 1k | RIPE NCC | NO | 1st Dec 2014 |
| 185.89.0.0/22 | 1k | RIPE NCC | NO | 19th Feb 2015 |
| 185.97.84.0/22 | 1k | RIPE NCC | NO | 27th Jun 2016 |
| 192.100.63.0/24 | 256 | RIPE NCC | NO | 28th Mar 1991 |