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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
372 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 204.79.219.0/24 | 256 | ARIN | 19th Dec 1994 | |
| 204.79.232.0/23 | 512 | ARIN | 19th Dec 1994 | |
| 204.79.234.0/24 | 256 | ARIN | 19th Dec 1994 | |
| 205.132.48.0/21 | 2k | RIPE NCC | 30th Sept 2008 | |
| 212.52.22.0/24 | 256 | RIPE NCC | 8th Nov 2021 | |
| 213.108.26.0/23 | 512 | RIPE NCC | 4th Jun 2009 | |
| 217.22.1.0/24 | 256 | RIPE NCC | 26th Jun 2026 | |
| 217.22.2.0/24 | 256 | RIPE NCC | 26th Jun 2026 | |
| 2402:d00::/32 | 4.3B × /64 | APNIC | 26th Sept 2011 | |
| 2406:4a80::/32 | 4.3B × /64 | APNIC | 5th Aug 2016 | |
| 2a00:1548::/32 | 4.3B × /64 | RIPE NCC | 23rd Oct 2009 | |
| 2a00:1a50::/32 | 4.3B × /64 | RIPE NCC | 29th Jan 2010 | |
| 2a00:1c90::/32 | 4.3B × /64 | RIPE NCC | 5th Mar 2010 | |
| 2a00:4b20::/32 | 4.3B × /64 | RIPE NCC | 15th Apr 2015 | |
| 2a00:4f60::/32 | 4.3B × /64 | RIPE NCC | 4th Mar 2013 | |
| 2a00:5d40::/29 | 34.4B × /64 | RIPE NCC | 14th Dec 2011 | |
| 2a00:73e0::/32 | 4.3B × /64 | RIPE NCC | 28th Apr 2015 | |
| 2a00:7a00::/32 | 4.3B × /64 | RIPE NCC | 20th Jan 2011 | |
| 2a00:8a20::/32 | 4.3B × /64 | RIPE NCC | 21st May 2013 | |
| 2a00:8be0::/29 | 34.4B × /64 | RIPE NCC | 22nd May 2013 | |
| 2a00:8f60::/32 | 4.3B × /64 | RIPE NCC | 24th May 2013 | |
| 2a00:a240::/29 | 34.4B × /64 | RIPE NCC | 21st Feb 2012 | |
| 2a00:ce60::/29 | 34.4B × /64 | RIPE NCC | 21st Aug 2013 | |
| 2a00:e4a0::/32 | 4.3B × /64 | RIPE NCC | 18th Sept 2013 | |
| 2a00:f0a0::/29 | 34.4B × /64 | RIPE NCC | 1st Oct 2013 | |
| 2a01:80e0::/29 | 34.4B × /64 | RIPE NCC | 22nd Jan 2014 | |
| 2a01:83c0::/32 | 4.3B × /64 | RIPE NCC | 6th Jul 2012 | |
| 2a01:9900::/32 | 4.3B × /64 | RIPE NCC | 9th Mar 2011 | |
| 2a01:9c60::/32 | 4.3B × /64 | RIPE NCC | 25th Feb 2014 | |
| 2a01:a520::/32 | 4.3B × /64 | RIPE NCC | 7th Mar 2014 | |
| 2a01:bb40::/32 | 4.3B × /64 | RIPE NCC | 7th Sept 2012 | |
| 2a02:2200::/32 | 4.3B × /64 | RIPE NCC | 30th Jul 2010 | |
| 2a02:22b0::/32 | 4.3B × /64 | RIPE NCC | 17th Aug 2010 | |
| 2a02:22b8::/32 | 4.3B × /64 | RIPE NCC | 18th Aug 2010 | |
| 2a02:2828::/32 | 4.3B × /64 | RIPE NCC | 2nd Nov 2010 | |
| 2a02:2898::/32 | 4.3B × /64 | RIPE NCC | 5th Nov 2010 | |
| 2a02:2a20::/32 | 4.3B × /64 | RIPE NCC | 23rd Nov 2010 | |
| 2a02:4060::/29 | 34.4B × /64 | RIPE NCC | 11th Apr 2014 | |
| 2a02:5da0::/32 | 4.3B × /64 | RIPE NCC | 15th May 2014 | |
| 2a02:6060::/32 | 4.3B × /64 | RIPE NCC | 19th May 2014 | |
| 2a02:73a0::/29 | 34.4B × /64 | RIPE NCC | 11th Jun 2014 | |
| 2a02:a20::/32 | 4.3B × /64 | RIPE NCC | 13th Feb 2009 | |
| 2a02:e580::/29 | 34.4B × /64 | RIPE NCC | 20th Nov 2012 | |
| 2a02:fc80::/29 | 34.4B × /64 | RIPE NCC | 9th Jan 2013 | |
| 2a03:1ca0::/32 | 4.3B × /64 | RIPE NCC | 30th Jul 2014 | |
| 2a03:20e0::/32 | 4.3B × /64 | RIPE NCC | 7th Aug 2014 | |
| 2a03:4200::/30 | 17.2B × /64 | RIPE NCC | 2nd Feb 2026 | |
| 2a03:43c0::/32 | 4.3B × /64 | RIPE NCC | 2nd Nov 2012 | |
| 2a03:5580::/29 | 34.4B × /64 | RIPE NCC | 14th Sept 2011 | |
| 2a03:6780::/32 | 4.3B × /64 | RIPE NCC | 21st Sept 2011 |