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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 in Switzerland
942 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 193.135.154.0/23 | 512 | RIPE NCC |  CH | 28th May 1997 |
| 193.135.158.0/23 | 512 | RIPE NCC | CH | 28th May 1997 |
| 193.135.16.0/22 | 1k | RIPE NCC | CH | 28th May 1997 |
| 193.135.160.0/23 | 512 | RIPE NCC | CH | 28th May 1997 |
| 193.135.175.0/24 | 256 | RIPE NCC | CH | 28th May 1997 |
| 193.135.176.0/20 | 4.1k | RIPE NCC | CH | 28th May 1997 |
| 193.135.192.0/20 | 4.1k | RIPE NCC | CH | 28th May 1997 |
| 193.135.208.0/22 | 1k | RIPE NCC | CH | 28th May 1997 |
| 193.135.212.0/23 | 512 | RIPE NCC | CH | 28th May 1997 |
| 193.135.22.0/23 | 512 | RIPE NCC | CH | 28th May 1997 |
| 193.135.224.0/20 | 4.1k | RIPE NCC | CH | 28th May 1997 |
| 193.135.248.0/22 | 1k | RIPE NCC | CH | 28th May 1997 |
| 193.135.25.0/24 | 256 | RIPE NCC | CH | 28th May 1997 |
| 193.135.31.0/24 | 256 | RIPE NCC | CH | 28th May 1997 |
| 193.135.32.0/21 | 2k | RIPE NCC | CH | 28th May 1997 |
| 193.135.4.0/22 | 1k | RIPE NCC | CH | 28th May 1997 |
| 193.135.60.0/22 | 1k | RIPE NCC | CH | 28th May 1997 |
| 193.138.69.0/24 | 256 | RIPE NCC | CH | 7th Feb 2003 |
| 193.142.62.0/24 | 256 | RIPE NCC | CH | 14th Mar 2007 |
| 193.148.192.0/19 | 8.2k | RIPE NCC | CH | 1st Sept 1993 |
| 193.16.44.0/24 | 256 | RIPE NCC | CH | 5th Nov 2003 |
| 193.160.124.0/23 | 512 | RIPE NCC | CH | 15th May 1995 |
| 193.161.240.0/22 | 1k | RIPE NCC | CH | 2nd Mar 1995 |
| 193.161.244.0/24 | 256 | RIPE NCC | CH | 2nd Mar 1995 |
| 193.164.244.0/23 | 512 | RIPE NCC | CH | 14th Jul 2000 |
| 193.168.165.0/24 | 256 | RIPE NCC | CH | 5th May 2026 |
| 193.169.152.0/23 | 512 | RIPE NCC | CH | 20th Jul 2009 |
| 193.17.201.0/24 | 256 | RIPE NCC | CH | 8th Oct 2004 |
| 193.17.64.0/24 | 256 | RIPE NCC | CH | 13th Nov 2019 |
| 193.188.224.0/20 | 4.1k | RIPE NCC | CH | 12th Jan 1996 |
| 193.200.115.0/24 | 256 | RIPE NCC | CH | 28th Jan 2026 |
| 193.200.79.0/24 | 256 | RIPE NCC | CH | 6th Mar 2024 |
| 193.201.150.192/26 | 64 | RIPE NCC | CH | 9th Nov 2023 |
| 193.201.22.0/24 | 256 | RIPE NCC | CH | 19th Jan 2026 |
| 193.202.46.0/23 | 512 | RIPE NCC | CH | 12th Oct 1993 |
| 193.202.48.0/21 | 2k | RIPE NCC | CH | 12th Oct 1993 |
| 193.202.56.0/22 | 1k | RIPE NCC | CH | 12th Oct 1993 |
| 193.202.60.0/23 | 512 | RIPE NCC | CH | 12th Oct 1993 |
| 193.218.205.0/26 | 64 | RIPE NCC | CH | 19th Nov 2007 |
| 193.218.207.16/28 | 16 | RIPE NCC | CH | 26th Jan 2011 |
| 193.218.207.32/27 | 32 | RIPE NCC | CH | 26th Jan 2011 |
| 193.222.0.0/19 | 8.2k | RIPE NCC | CH | 1st Sept 1993 |
| 193.222.176.0/21 | 2k | RIPE NCC | CH | 1st Sept 1993 |
| 193.222.184.0/22 | 1k | RIPE NCC | CH | 1st Sept 1993 |
| 193.222.32.0/20 | 4.1k | RIPE NCC | CH | 1st Sept 1993 |
| 193.223.1.0/24 | 256 | RIPE NCC | CH | 1st Sept 1993 |
| 193.223.112.0/20 | 4.1k | RIPE NCC | CH | 1st Sept 1993 |
| 193.223.128.0/19 | 8.2k | RIPE NCC | CH | 1st Sept 1993 |
| 193.223.160.0/21 | 2k | RIPE NCC | CH | 1st Sept 1993 |
| 193.223.168.0/23 | 512 | RIPE NCC | CH | 1st Sept 1993 |