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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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:2e88::/48 | 65.5k × /64 | RIPE NCC | 30th Sept 2015 | |
| 2001:67c:2e94::/48 | 65.5k × /64 | RIPE NCC | 6th Jun 2025 | |
| 2001:67c:2e98::/48 | 65.5k × /64 | RIPE NCC | 5th Oct 2015 | |
| 2001:67c:2eb8::/48 | 65.5k × /64 | RIPE NCC | 15th Oct 2015 | |
| 2001:67c:2ec4::/48 | 65.5k × /64 | RIPE NCC | 7th Oct 2024 | |
| 2001:67c:2ec8::/48 | 65.5k × /64 | RIPE NCC | 21st Oct 2015 | |
| 2001:67c:2ee0::/48 | 65.5k × /64 | RIPE NCC | 14th Jun 2021 | |
| 2001:67c:2ef4::/48 | 65.5k × /64 | RIPE NCC | 3rd Nov 2015 | |
| 2001:67c:2ef8::/48 | 65.5k × /64 | RIPE NCC | 3rd Nov 2015 | |
| 2001:67c:2f00::/48 | 65.5k × /64 | RIPE NCC | 5th Nov 2015 | |
| 2001:67c:2f04::/48 | 65.5k × /64 | RIPE NCC | 6th Nov 2015 | |
| 2001:67c:2f10::/48 | 65.5k × /64 | RIPE NCC | 12th Oct 2017 | |
| 2001:67c:2f14::/48 | 65.5k × /64 | RIPE NCC | 22nd Oct 2025 | |
| 2001:67c:2f20::/48 | 65.5k × /64 | RIPE NCC | 4th Dec 2015 | |
| 2001:67c:2f28::/48 | 65.5k × /64 | RIPE NCC | 11th Dec 2015 | |
| 2001:67c:2f30::/48 | 65.5k × /64 | RIPE NCC | 11th Dec 2015 | |
| 2001:67c:2f34::/48 | 65.5k × /64 | RIPE NCC | 16th Dec 2015 | |
| 2001:67c:2f38::/48 | 65.5k × /64 | RIPE NCC | 22nd Aug 2023 | |
| 2001:67c:2f3c::/48 | 65.5k × /64 | RIPE NCC | 25th Apr 2017 | |
| 2001:67c:2f40::/48 | 65.5k × /64 | RIPE NCC | 8th Dec 2020 | |
| 2001:67c:2f44::/48 | 65.5k × /64 | RIPE NCC | 25th Jan 2016 | |
| 2001:67c:2f4::/48 | 65.5k × /64 | RIPE NCC | 24th Sept 2010 | |
| 2001:67c:2f54::/48 | 65.5k × /64 | RIPE NCC | 1st Feb 2016 | |
| 2001:67c:2f58::/48 | 65.5k × /64 | RIPE NCC | 15th Aug 2019 | |
| 2001:67c:2f60::/48 | 65.5k × /64 | RIPE NCC | 3rd Feb 2016 | |
| 2001:67c:2fa0::/48 | 65.5k × /64 | RIPE NCC | 22nd Feb 2016 | |
| 2001:67c:2fac::/48 | 65.5k × /64 | RIPE NCC | 23rd Feb 2016 | |
| 2001:67c:2fb0::/48 | 65.5k × /64 | RIPE NCC | 30th Sept 2026 | |
| 2001:67c:2fb8::/48 | 65.5k × /64 | RIPE NCC | 25th Feb 2016 | |
| 2001:67c:2fc8::/48 | 65.5k × /64 | RIPE NCC | 28th Aug 2024 | |
| 2001:67c:2fcc::/48 | 65.5k × /64 | RIPE NCC | 3rd Mar 2016 | |
| 2001:67c:2fd0::/48 | 65.5k × /64 | RIPE NCC | 4th Mar 2016 | |
| 2001:67c:2fd4::/48 | 65.5k × /64 | RIPE NCC | 4th Mar 2016 | |
| 2001:67c:2fe4::/48 | 65.5k × /64 | RIPE NCC | 11th Mar 2016 | |
| 2001:67c:2fe8::/48 | 65.5k × /64 | RIPE NCC | 14th Mar 2016 | |
| 2001:67c:2ffc::/48 | 65.5k × /64 | RIPE NCC | 30th Jul 2020 | |
| 2001:67c:304::/48 | 65.5k × /64 | RIPE NCC | 5th Oct 2010 | |
| 2001:67c:308::/48 | 65.5k × /64 | RIPE NCC | 6th Oct 2010 | |
| 2001:67c:30c::/48 | 65.5k × /64 | RIPE NCC | 13th Oct 2010 | |
| 2001:67c:310::/48 | 65.5k × /64 | RIPE NCC | 13th Oct 2010 | |
| 2001:67c:318::/48 | 65.5k × /64 | RIPE NCC | 18th Oct 2010 | |
| 2001:67c:320::/48 | 65.5k × /64 | RIPE NCC | 26th Nov 2019 | |
| 2001:67c:32c::/48 | 65.5k × /64 | RIPE NCC | 2nd Nov 2010 | |
| 2001:67c:330::/48 | 65.5k × /64 | RIPE NCC | 3rd Nov 2010 | |
| 2001:67c:338::/48 | 65.5k × /64 | RIPE NCC | 4th Nov 2010 | |
| 2001:67c:33c::/48 | 65.5k × /64 | RIPE NCC | 4th Nov 2010 | |
| 2001:67c:340::/48 | 65.5k × /64 | RIPE NCC | 4th Nov 2010 | |
| 2001:67c:350::/48 | 65.5k × /64 | RIPE NCC | 11th Nov 2010 | |
| 2001:67c:354::/48 | 65.5k × /64 | RIPE NCC | 11th Nov 2010 | |
| 2001:67c:35c::/48 | 65.5k × /64 | RIPE NCC | 12th Nov 2010 |