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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 192.104.57.0/24 | 256 | RIPE NCC |  NO | 30th Jun 1991 |
| 192.104.58.0/24 | 256 | RIPE NCC | NO | 30th Apr 1991 |
| 192.111.124.0/23 | 512 | RIPE NCC | NO | 19th Aug 1991 |
| 192.132.11.0/24 | 256 | RIPE NCC | NO | 5th Nov 1991 |
| 192.133.32.0/24 | 256 | RIPE NCC | NO | 5th Nov 1991 |
| 192.133.64.0/24 | 256 | RIPE NCC | NO | 13th Nov 1991 |
| 192.135.143.0/24 | 256 | RIPE NCC | NO | 12th Dec 1991 |
| 192.135.46.0/24 | 256 | RIPE NCC | NO | 21st Nov 1991 |
| 192.138.105.0/24 | 256 | RIPE NCC | NO | 7th Jan 1992 |
| 192.138.106.0/23 | 512 | RIPE NCC | NO | 7th Jan 1992 |
| 192.138.108.0/24 | 256 | RIPE NCC | NO | 7th Jan 1992 |
| 192.138.155.0/24 | 256 | RIPE NCC | NO | 8th Jan 1992 |
| 192.146.193.0/24 | 256 | RIPE NCC | NO | 4th Feb 1992 |
| 192.146.227.0/24 | 256 | RIPE NCC | NO | 7th Feb 1992 |
| 192.149.100.0/24 | 256 | RIPE NCC | NO | 6th Mar 1992 |
| 192.149.102.0/24 | 256 | RIPE NCC | NO | 6th Mar 1992 |
| 192.149.78.0/24 | 256 | RIPE NCC | NO | 2nd Mar 1992 |
| 192.149.79.0/24 | 256 | RIPE NCC | NO | 2nd Mar 1992 |
| 192.150.124.0/24 | 256 | RIPE NCC | NO | 12th Mar 1992 |
| 192.150.188.0/24 | 256 | RIPE NCC | NO | 18th Mar 1992 |
| 192.150.197.0/24 | 256 | RIPE NCC | NO | 18th Mar 1992 |
| 192.150.209.0/24 | 256 | RIPE NCC | NO | 19th Mar 1992 |
| 192.150.223.0/24 | 256 | RIPE NCC | NO | 20th Mar 1992 |
| 192.150.254.0/24 | 256 | RIPE NCC | NO | 27th Mar 1992 |
| 192.152.111.0/24 | 256 | RIPE NCC | NO | 11th May 1992 |
| 192.152.6.0/24 | 256 | RIPE NCC | NO | 30th Mar 1992 |
| 192.155.1.0/24 | 256 | RIPE NCC | NO | 6th Apr 1992 |
| 192.155.2.0/24 | 256 | RIPE NCC | NO | 6th Apr 1992 |
| 192.155.3.0/24 | 256 | RIPE NCC | NO | 6th Apr 1992 |
| 192.155.4.0/24 | 256 | RIPE NCC | NO | 6th Apr 1992 |
| 192.155.5.0/24 | 256 | RIPE NCC | NO | 6th Apr 1992 |
| 192.155.6.0/24 | 256 | RIPE NCC | NO | 6th Apr 1992 |
| 192.157.1.0/24 | 256 | RIPE NCC | NO | 15th Apr 1992 |
| 192.157.129.0/24 | 256 | RIPE NCC | NO | 14th Feb 1995 |
| 192.157.2.0/23 | 512 | RIPE NCC | NO | 15th Apr 1992 |
| 192.159.108.0/24 | 256 | RIPE NCC | NO | 6th May 1992 |
| 192.160.126.0/24 | 256 | RIPE NCC | NO | 21st May 1992 |
| 192.160.225.0/24 | 256 | RIPE NCC | NO | 1st Sept 1993 |
| 192.160.23.0/24 | 256 | RIPE NCC | NO | 1st Apr 2005 |
| 192.188.105.0/24 | 256 | RIPE NCC | NO | 26th Jun 1992 |
| 192.190.191.0/24 | 256 | RIPE NCC | NO | 29th Jun 1992 |
| 192.190.193.0/24 | 256 | RIPE NCC | NO | 29th Jun 1992 |
| 192.190.58.0/24 | 256 | RIPE NCC | NO | 18th Jun 1992 |
| 192.190.59.0/24 | 256 | RIPE NCC | NO | 18th Jun 1992 |
| 192.190.95.0/24 | 256 | RIPE NCC | NO | 22nd Jun 1992 |
| 192.68.104.0/22 | 1k | RIPE NCC | NO | 21st Feb 1990 |
| 192.68.76.0/22 | 1k | RIPE NCC | NO | 21st Feb 1990 |
| 192.68.96.0/21 | 2k | RIPE NCC | NO | 21st Feb 1990 |
| 192.81.109.0/24 | 256 | RIPE NCC | NO | 13th Jan 1993 |
| 192.84.32.0/24 | 256 | RIPE NCC | NO | 23rd Oct 1990 |