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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
25,318 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2a00:1d08::/32 | 4.3B × /64 | RIPE NCC | 10th Mar 2010 | |
| 2a00:1d68::/32 | 4.3B × /64 | RIPE NCC | 15th Mar 2010 | |
| 2a00:1d90::/32 | 4.3B × /64 | RIPE NCC | 15th Mar 2010 | |
| 2a00:1db0::/32 | 4.3B × /64 | RIPE NCC | 18th Mar 2010 | |
| 2a00:1df0::/32 | 4.3B × /64 | RIPE NCC | 25th Mar 2010 | |
| 2a00:1e30::/32 | 4.3B × /64 | RIPE NCC | 31st Mar 2010 | |
| 2a00:1e6c::/30 | 17.2B × /64 | RIPE NCC | 7th Apr 2010 | |
| 2a00:1e78::/32 | 4.3B × /64 | RIPE NCC | 8th Apr 2010 | |
| 2a00:1e90::/29 | 34.4B × /64 | RIPE NCC | 8th Apr 2010 | |
| 2a00:1ea8::/32 | 4.3B × /64 | RIPE NCC | 9th Apr 2010 | |
| 2a00:1eb0::/32 | 4.3B × /64 | RIPE NCC | 9th Apr 2010 | |
| 2a00:1ee8::/32 | 4.3B × /64 | RIPE NCC | 13th Apr 2010 | |
| 2a00:1ef8::/29 | 34.4B × /64 | RIPE NCC | 13th Apr 2010 | |
| 2a00:1f20::/32 | 4.3B × /64 | RIPE NCC | 15th Apr 2010 | |
| 2a00:1f38::/32 | 4.3B × /64 | RIPE NCC | 15th Apr 2010 | |
| 2a00:1f48::/29 | 34.4B × /64 | RIPE NCC | 16th Apr 2010 | |
| 2a00:1f80::/32 | 4.3B × /64 | RIPE NCC | 21st Apr 2010 | |
| 2a00:1fe0::/32 | 4.3B × /64 | RIPE NCC | 4th May 2010 | |
| 2a00:4000::/29 | 34.4B × /64 | RIPE NCC | 1st Dec 2010 | |
| 2a00:4040::/32 | 4.3B × /64 | RIPE NCC | 22nd Nov 2011 | |
| 2a00:4080::/29 | 34.4B × /64 | RIPE NCC | 21st Apr 2011 | |
| 2a00:40e0::/32 | 4.3B × /64 | RIPE NCC | 15th Feb 2013 | |
| 2a00:41a0::/32 | 4.3B × /64 | RIPE NCC | 15th Feb 2013 | |
| 2a00:4220::/32 | 4.3B × /64 | RIPE NCC | 18th Feb 2013 | |
| 2a00:4240::/32 | 4.3B × /64 | RIPE NCC | 24th Nov 2011 | |
| 2a00:4260::/32 | 4.3B × /64 | RIPE NCC | 18th Feb 2013 | |
| 2a00:42e0::/29 | 34.4B × /64 | RIPE NCC | 6th Jan 2016 | |
| 2a00:4320::/32 | 4.3B × /64 | RIPE NCC | 19th Feb 2013 | |
| 2a00:4360::/32 | 4.3B × /64 | RIPE NCC | 19th Feb 2013 | |
| 2a00:43a0::/32 | 4.3B × /64 | RIPE NCC | 19th Feb 2013 | |
| 2a00:4420::/32 | 4.3B × /64 | RIPE NCC | 19th Feb 2013 | |
| 2a00:4440::/32 | 4.3B × /64 | RIPE NCC | 25th Nov 2011 | |
| 2a00:4480::/32 | 4.3B × /64 | RIPE NCC | 26th Apr 2011 | |
| 2a00:44c0::/32 | 4.3B × /64 | RIPE NCC | 25th Nov 2011 | |
| 2a00:44e0::/32 | 4.3B × /64 | RIPE NCC | 20th Feb 2013 | |
| 2a00:4540::/32 | 4.3B × /64 | RIPE NCC | 25th Nov 2011 | |
| 2a00:4560::/32 | 4.3B × /64 | RIPE NCC | 20th Feb 2013 | |
| 2a00:45a0::/32 | 4.3B × /64 | RIPE NCC | 20th Feb 2013 | |
| 2a00:45e0::/29 | 34.4B × /64 | RIPE NCC | 21st Feb 2013 | |
| 2a00:4620::/32 | 4.3B × /64 | RIPE NCC | 21st Feb 2013 | |
| 2a00:4640::/29 | 34.4B × /64 | RIPE NCC | 25th Nov 2011 | |
| 2a00:46a0::/32 | 4.3B × /64 | RIPE NCC | 21st Feb 2013 | |
| 2a00:46c0::/32 | 4.3B × /64 | RIPE NCC | 28th Nov 2011 | |
| 2a00:4740::/32 | 4.3B × /64 | RIPE NCC | 28th Nov 2011 | |
| 2a00:47c0::/32 | 4.3B × /64 | RIPE NCC | 29th Nov 2011 | |
| 2a00:47e0::/32 | 4.3B × /64 | RIPE NCC | 11th Jan 2016 | |
| 2a00:48c0::/32 | 4.3B × /64 | RIPE NCC | 30th Nov 2011 | |
| 2a00:48e0::/32 | 4.3B × /64 | RIPE NCC | 22nd Feb 2013 | |
| 2a00:4920::/29 | 34.4B × /64 | RIPE NCC | 22nd Feb 2013 | |
| 2a00:49e0::/32 | 4.3B × /64 | RIPE NCC | 25th Feb 2013 |