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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 unannounced space registered through RIPE NCC, largest first.
Unannounced blocks registered through RIPE NCC
25,269 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 79.170.193.0/24 | 256 | RIPE NCC | 2nd Oct 2007 | |
| 79.170.194.0/24 | 256 | RIPE NCC | 2nd Oct 2007 | |
| 79.170.195.0/24 | 256 | RIPE NCC | 2nd Oct 2007 | |
| 79.170.197.0/24 | 256 | RIPE NCC | 2nd Oct 2007 | |
| 79.170.198.0/24 | 256 | RIPE NCC | 2nd Oct 2007 | |
| 79.170.199.0/24 | 256 | RIPE NCC | 2nd Oct 2007 | |
| 79.170.232.0/21 | 2k | RIPE NCC | 5th Oct 2007 | |
| 79.170.56.0/21 | 2k | RIPE NCC | 25th Sept 2007 | |
| 79.171.114.0/24 | 256 | RIPE NCC | 12th Oct 2007 | |
| 79.171.152.0/24 | 256 | RIPE NCC | 17th Mar 2026 | |
| 79.171.168.0/23 | 512 | RIPE NCC | 7th Oct 2008 | |
| 79.171.170.0/23 | 512 | RIPE NCC | 7th Oct 2008 | |
| 79.171.184.0/21 | 2k | RIPE NCC | 17th Oct 2007 | |
| 79.171.192.0/21 | 2k | RIPE NCC | 17th Oct 2007 | |
| 79.171.200.0/21 | 2k | RIPE NCC | 17th Oct 2007 | |
| 79.171.24.0/21 | 2k | RIPE NCC | 30th Jan 2008 | |
| 79.174.0.0/23 | 512 | RIPE NCC | 4th Oct 2018 | |
| 79.174.176.0/21 | 2k | RIPE NCC | 9th Aug 2012 | |
| 79.174.96.0/19 | 8.2k | RIPE NCC | 16th Jun 2008 | |
| 79.64.0.0/15 | 131k | RIPE NCC | 19th Jun 2007 | |
| 79.98.248.0/21 | 2k | RIPE NCC | 17th Jan 2011 | |
| 79.98.80.0/21 | 2k | RIPE NCC | 29th Oct 2007 | |
| 79.99.140.0/22 | 1k | RIPE NCC | 22nd Nov 2007 | |
| 79.99.152.0/21 | 2k | RIPE NCC | 27th Nov 2007 | |
| 80.104.0.0/15 | 131k | RIPE NCC | 17th Jul 2001 | |
| 80.116.0.0/15 | 131k | RIPE NCC | 6th Aug 2001 | |
| 80.173.0.0/17 | 32.8k | RIPE NCC | 11th Jun 2003 | |
| 80.173.128.0/22 | 1k | RIPE NCC | 11th Jun 2003 | |
| 80.173.132.0/22 | 1k | RIPE NCC | 11th Jun 2003 | |
| 80.173.144.0/22 | 1k | RIPE NCC | 11th Jun 2003 | |
| 80.173.148.0/22 | 1k | RIPE NCC | 11th Jun 2003 | |
| 80.173.160.0/21 | 2k | RIPE NCC | 11th Jun 2003 | |
| 80.173.174.0/24 | 256 | RIPE NCC | 11th Jun 2003 | |
| 80.173.175.0/24 | 256 | RIPE NCC | 11th Jun 2003 | |
| 80.173.176.0/20 | 4.1k | RIPE NCC | 11th Jun 2003 | |
| 80.173.200.0/22 | 1k | RIPE NCC | 11th Jun 2003 | |
| 80.173.224.0/22 | 1k | RIPE NCC | 11th Jun 2003 | |
| 80.210.80.0/20 | 4.1k | RIPE NCC | 12th Dec 2001 | |
| 80.224.0.0/17 | 32.8k | RIPE NCC | 28th Sept 2001 | |
| 80.224.128.0/18 | 16.4k | RIPE NCC | 28th Sept 2001 | |
| 80.224.252.0/24 | 256 | RIPE NCC | 28th Sept 2001 | |
| 80.224.255.0/24 | 256 | RIPE NCC | 28th Sept 2001 | |
| 80.237.144.0/21 | 2k | RIPE NCC | 12th Nov 2001 | |
| 80.237.196.0/22 | 1k | RIPE NCC | 12th Nov 2001 | |
| 80.237.208.0/22 | 1k | RIPE NCC | 12th Nov 2001 | |
| 80.238.32.0/19 | 8.2k | RIPE NCC | 13th Apr 2006 | |
| 80.238.64.0/19 | 8.2k | RIPE NCC | 8th May 2006 | |
| 80.241.156.0/23 | 512 | RIPE NCC | 1st Sept 2005 | |
| 80.241.158.0/24 | 256 | RIPE NCC | 1st Sept 2005 | |
| 80.241.159.0/24 | 256 | RIPE NCC | 1st Sept 2005 |