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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 Serbia
105 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 91.193.75.0/24 | 256 | RIPE NCC |  RS | 4th Jun 2012 |
| 91.218.172.0/24 | 256 | RIPE NCC | RS | 28th Jul 2010 |
| 91.228.18.0/23 | 512 | RIPE NCC | RS | 20th May 2011 |
| 91.238.6.0/23 | 512 | RIPE NCC | RS | 3rd Apr 2012 |
| 91.238.61.0/24 | 256 | RIPE NCC | RS | 10th Apr 2012 |