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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 registered through RIPE NCC
25,269 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 130.78.178.0/23 | 512 | RIPE NCC |  US | 24th Jun 1988 |
| 130.78.180.0/22 | 1k | RIPE NCC | US | 24th Jun 1988 |
| 130.78.192.0/20 | 4.1k | RIPE NCC |  NL | 24th Jun 1988 |
| 130.78.208.0/21 | 2k | RIPE NCC | NL | 24th Jun 1988 |
| 130.78.222.0/23 | 512 | RIPE NCC | NL | 24th Jun 1988 |
| 130.78.224.0/20 | 4.1k | RIPE NCC | NL | 24th Jun 1988 |
| 130.78.241.0/24 | 256 | RIPE NCC | NL | 24th Jun 1988 |
| 130.78.242.0/23 | 512 | RIPE NCC | NL | 24th Jun 1988 |
| 130.78.248.0/21 | 2k | RIPE NCC | NL | 24th Jun 1988 |
| 130.78.64.0/19 | 8.2k | RIPE NCC | NL | 24th Jun 1988 |
| 130.78.96.0/20 | 4.1k | RIPE NCC |  CH | 24th Jun 1988 |
| 130.98.0.0/16 | 65.5k | RIPE NCC |  FR | 1st Apr 2005 |
| 131.117.0.0/17 | 32.8k | RIPE NCC | CH | 31st May 1995 |
| 131.117.168.0/21 | 2k | RIPE NCC |  GB | 8th Mar 2012 |
| 131.117.216.0/21 | 2k | RIPE NCC |  RU | 16th Mar 2012 |
| 131.150.144.0/20 | 4.1k | RIPE NCC | NL | 15th May 2012 |
| 131.205.0.0/16 | 65.5k | RIPE NCC |  SE | 11th Jan 1989 |
| 131.222.0.0/17 | 32.8k | RIPE NCC |  AE | 6th Apr 1990 |
| 131.222.132.0/24 | 256 | RIPE NCC |  TR | 6th Apr 1990 |
| 131.222.136.0/21 | 2k | RIPE NCC | US | 6th Apr 1990 |
| 131.222.144.0/20 | 4.1k | RIPE NCC | US | 6th Apr 1990 |
| 131.222.160.0/20 | 4.1k | RIPE NCC | US | 6th Apr 1990 |
| 131.222.176.0/20 | 4.1k | RIPE NCC | US | 6th Apr 1990 |
| 131.222.192.0/23 | 512 | RIPE NCC | TR | 6th Apr 1990 |
| 131.222.196.0/23 | 512 | RIPE NCC | TR | 6th Apr 1990 |
| 131.222.204.0/23 | 512 | RIPE NCC | AE | 6th Apr 1990 |
| 131.222.220.0/23 | 512 | RIPE NCC | TR | 6th Apr 1990 |
| 131.222.234.0/23 | 512 | RIPE NCC | TR | 6th Apr 1990 |
| 131.97.0.0/16 | 65.5k | RIPE NCC | SE | 1st Sept 1993 |
| 132.243.0.0/20 | 4.1k | RIPE NCC | US | 29th Mar 1989 |
| 132.243.128.0/19 | 8.2k | RIPE NCC | US | 29th Mar 1989 |
| 132.243.184.0/21 | 2k | RIPE NCC |  AM | 29th Mar 1989 |
| 132.243.96.0/20 | 4.1k | RIPE NCC | US | 29th Mar 1989 |
| 134.0.224.0/19 | 8.2k | RIPE NCC |  OM | 1st Nov 2011 |
| 134.119.128.0/19 | 8.2k | RIPE NCC |  DE | 1st Jan 1984 |
| 134.119.160.0/20 | 4.1k | RIPE NCC | DE | 1st Jan 1984 |
| 134.142.0.0/16 | 65.5k | RIPE NCC | GB | 1st Sept 1993 |
| 134.143.0.0/16 | 65.5k | RIPE NCC | NL | 1st Sept 1993 |
| 134.145.0.0/16 | 65.5k | RIPE NCC | NL | 1st Sept 1993 |
| 134.183.0.0/16 | 65.5k | RIPE NCC | GB | 5th Jul 1989 |
| 134.203.0.0/16 | 65.5k | RIPE NCC | NL | 19th Jul 1989 |
| 134.242.239.0/24 | 256 | RIPE NCC | FR | 30th Mar 2016 |
| 134.255.196.0/23 | 512 | RIPE NCC |  IR | 8th Nov 2011 |
| 134.255.241.0/24 | 256 | RIPE NCC |  ES | 8th Nov 2011 |
| 134.255.245.0/24 | 256 | RIPE NCC | IR | 8th Nov 2011 |
| 134.255.246.0/24 | 256 | RIPE NCC | IR | 8th Nov 2011 |
| 134.27.0.0/16 | 65.5k | RIPE NCC | NL | 22nd Aug 2007 |
| 134.49.160.0/21 | 2k | RIPE NCC | DE | 26th Apr 1989 |
| 134.49.232.0/21 | 2k | RIPE NCC |  CA | 26th Apr 1989 |
| 134.49.64.0/19 | 8.2k | RIPE NCC | NL | 29th Apr 1989 |