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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
24,872 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2001:67c:2988::/47 | 131k × /64 | RIPE NCC | 31st May 2012 | |
| 2001:67c:2990::/48 | 65.5k × /64 | RIPE NCC | 25th Jul 2019 | |
| 2001:67c:2998::/48 | 65.5k × /64 | RIPE NCC | 31st May 2012 | |
| 2001:67c:29a0::/48 | 65.5k × /64 | RIPE NCC | 4th Jun 2012 | |
| 2001:67c:29bc::/48 | 65.5k × /64 | RIPE NCC | 4th Mar 2020 | |
| 2001:67c:29c0::/47 | 131k × /64 | RIPE NCC | 5th Jun 2012 | |
| 2001:67c:29c8::/48 | 65.5k × /64 | RIPE NCC | 6th Jun 2012 | |
| 2001:67c:29c::/48 | 65.5k × /64 | RIPE NCC | 27th Dec 2021 | |
| 2001:67c:29d0::/48 | 65.5k × /64 | RIPE NCC | 6th Jun 2012 | |
| 2001:67c:29d8::/48 | 65.5k × /64 | RIPE NCC | 14th Jun 2012 | |
| 2001:67c:29e0::/48 | 65.5k × /64 | RIPE NCC | 2nd Jun 2023 | |
| 2001:67c:29e8::/48 | 65.5k × /64 | RIPE NCC | 15th Jun 2012 | |
| 2001:67c:29f0::/48 | 65.5k × /64 | RIPE NCC | 19th Jun 2012 | |
| 2001:67c:29f8::/48 | 65.5k × /64 | RIPE NCC | 20th Jun 2012 | |
| 2001:67c:2a00::/48 | 65.5k × /64 | RIPE NCC | 20th Jun 2012 | |
| 2001:67c:2a04::/48 | 65.5k × /64 | RIPE NCC | 20th Jun 2012 | |
| 2001:67c:2a08::/48 | 65.5k × /64 | RIPE NCC | 21st Jun 2012 | |
| 2001:67c:2a0c::/48 | 65.5k × /64 | RIPE NCC | 21st Jun 2012 | |
| 2001:67c:2a14::/48 | 65.5k × /64 | RIPE NCC | 13th Sept 2023 | |
| 2001:67c:2a20::/48 | 65.5k × /64 | RIPE NCC | 19th Aug 2015 | |
| 2001:67c:2a2c::/48 | 65.5k × /64 | RIPE NCC | 28th Jun 2012 | |
| 2001:67c:2a30::/48 | 65.5k × /64 | RIPE NCC | 29th Jun 2012 | |
| 2001:67c:2a38::/48 | 65.5k × /64 | RIPE NCC | 4th Jul 2012 | |
| 2001:67c:2a3c::/48 | 65.5k × /64 | RIPE NCC | 5th Jul 2012 | |
| 2001:67c:2a44::/48 | 65.5k × /64 | RIPE NCC | 9th Jul 2012 | |
| 2001:67c:2a48::/48 | 65.5k × /64 | RIPE NCC | 9th Jul 2012 | |
| 2001:67c:2a4::/48 | 65.5k × /64 | RIPE NCC | 15th Dec 2010 | |
| 2001:67c:2a50::/48 | 65.5k × /64 | RIPE NCC | 11th Jul 2012 | |
| 2001:67c:2a54::/48 | 65.5k × /64 | RIPE NCC | 12th Jul 2012 | |
| 2001:67c:2a5c::/48 | 65.5k × /64 | RIPE NCC | 13th Jul 2012 | |
| 2001:67c:2a60::/48 | 65.5k × /64 | RIPE NCC | 29th Sept 2015 | |
| 2001:67c:2a64::/48 | 65.5k × /64 | RIPE NCC | 16th Jul 2012 | |
| 2001:67c:2a6c::/48 | 65.5k × /64 | RIPE NCC | 18th Jul 2012 | |
| 2001:67c:2a70::/48 | 65.5k × /64 | RIPE NCC | 18th Jul 2012 | |
| 2001:67c:2a78::/48 | 65.5k × /64 | RIPE NCC | 19th Jul 2012 | |
| 2001:67c:2a80::/48 | 65.5k × /64 | RIPE NCC | 16th Nov 2012 | |
| 2001:67c:2a88::/48 | 65.5k × /64 | RIPE NCC | 19th Nov 2012 | |
| 2001:67c:2a8::/48 | 65.5k × /64 | RIPE NCC | 28th Jul 2010 | |
| 2001:67c:2a8c::/48 | 65.5k × /64 | RIPE NCC | 19th Nov 2012 | |
| 2001:67c:2a90::/48 | 65.5k × /64 | RIPE NCC | 20th Nov 2012 | |
| 2001:67c:2a94::/48 | 65.5k × /64 | RIPE NCC | 20th Nov 2012 | |
| 2001:67c:2a9c::/48 | 65.5k × /64 | RIPE NCC | 21st Nov 2012 | |
| 2001:67c:2aac::/48 | 65.5k × /64 | RIPE NCC | 22nd Nov 2012 | |
| 2001:67c:2ab0::/48 | 65.5k × /64 | RIPE NCC | 26th Nov 2012 | |
| 2001:67c:2ac4::/48 | 65.5k × /64 | RIPE NCC | 28th Nov 2012 | |
| 2001:67c:2ac8::/48 | 65.5k × /64 | RIPE NCC | 28th Nov 2012 | |
| 2001:67c:2ac::/48 | 65.5k × /64 | RIPE NCC | 28th Jul 2010 | |
| 2001:67c:2adc::/48 | 65.5k × /64 | RIPE NCC | 3rd Dec 2012 | |
| 2001:67c:2aec::/48 | 65.5k × /64 | RIPE NCC | 25th May 2016 | |
| 2001:67c:2afc::/48 | 65.5k × /64 | RIPE NCC | 5th Dec 2012 |