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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 the most unannounced blocks, largest first.
Unannounced blocks
85,356 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2001:7f8:168::/48 | 65.5k × /64 | RIPE NCC |  TR | 12th Sept 2025 |
| 2001:7f8:16::/48 | 65.5k × /64 | RIPE NCC |  LV | 30th Dec 2015 |
| 2001:7f8:16a::/48 | 65.5k × /64 | RIPE NCC |  AL | 12th Sept 2025 |
| 2001:7f8:16c::/48 | 65.5k × /64 | RIPE NCC |  CH | 19th Sept 2025 |
| 2001:7f8:16d::/48 | 65.5k × /64 | RIPE NCC |  PL | 19th Dec 2025 |
| 2001:7f8:16e::/48 | 65.5k × /64 | RIPE NCC | PL | 19th Dec 2025 |
| 2001:7f8:16f::/48 | 65.5k × /64 | RIPE NCC |  NL | 18th Mar 2026 |
| 2001:7f8:170::/48 | 65.5k × /64 | RIPE NCC |  AT | 20th Mar 2026 |
| 2001:7f8:171::/48 | 65.5k × /64 | RIPE NCC | TR | 25th Mar 2026 |
| 2001:7f8:172::/48 | 65.5k × /64 | RIPE NCC | CH | 30th Mar 2026 |
| 2001:7f8:173::/48 | 65.5k × /64 | RIPE NCC | PL | 2nd Apr 2026 |
| 2001:7f8:174::/48 | 65.5k × /64 | RIPE NCC | PL | 2nd Apr 2026 |
| 2001:7f8:175::/48 | 65.5k × /64 | RIPE NCC | PL | 2nd Apr 2026 |
| 2001:7f8:176::/48 | 65.5k × /64 | RIPE NCC | PL | 2nd Apr 2026 |
| 2001:7f8:177::/48 | 65.5k × /64 | RIPE NCC | PL | 2nd Apr 2026 |
| 2001:7f8:178::/48 | 65.5k × /64 | RIPE NCC |  AE | 9th Apr 2026 |
| 2001:7f8:179::/48 | 65.5k × /64 | RIPE NCC |  RU | 18th May 2026 |
| 2001:7f8:17::/48 | 65.5k × /64 | RIPE NCC |  GB | 27th Mar 2003 |
| 2001:7f8:17a::/48 | 65.5k × /64 | RIPE NCC | LV | 18th May 2026 |
| 2001:7f8:17b::/48 | 65.5k × /64 | RIPE NCC | LV | 18th May 2026 |
| 2001:7f8:17c::/48 | 65.5k × /64 | RIPE NCC | LV | 18th May 2026 |
| 2001:7f8:17d::/48 | 65.5k × /64 | RIPE NCC |  IL | 28th May 2026 |
| 2001:7f8:17e::/48 | 65.5k × /64 | RIPE NCC | NL | 3rd Jun 2026 |
| 2001:7f8:19::/48 | 65.5k × /64 | RIPE NCC |  DE | 4th Apr 2003 |
| 2001:7f8:1::/48 | 65.5k × /64 | RIPE NCC | NL | 13th Sept 2001 |
| 2001:7f8:1b::/48 | 65.5k × /64 | RIPE NCC |  IT | 18th Jul 2019 |
| 2001:7f8:1c::/48 | 65.5k × /64 | RIPE NCC | CH | 3rd Jun 2003 |
| 2001:7f8:20::/48 | 65.5k × /64 | RIPE NCC | RU | 2nd Sept 2003 |
| 2001:7f8:21::/48 | 65.5k × /64 | RIPE NCC |  SE | 15th Sept 2003 |
| 2001:7f8:22::/48 | 65.5k × /64 | RIPE NCC |  ME | 26th May 2015 |
| 2001:7f8:23::/48 | 65.5k × /64 | RIPE NCC | IT | 11th Nov 2003 |
| 2001:7f8:24::/48 | 65.5k × /64 | RIPE NCC | CH | 13th Nov 2003 |
| 2001:7f8:25::/48 | 65.5k × /64 | RIPE NCC | DE | 3rd Jul 2023 |
| 2001:7f8:26::/48 | 65.5k × /64 | RIPE NCC |  BE | 3rd Dec 2003 |
| 2001:7f8:28::/48 | 65.5k × /64 | RIPE NCC |  HR | 15th Apr 2004 |
| 2001:7f8:29::/48 | 65.5k × /64 | RIPE NCC | DE | 11th May 2004 |
| 2001:7f8:2::/48 | 65.5k × /64 | RIPE NCC |  LB | 7th Nov 2025 |
| 2001:7f8:2b::/48 | 65.5k × /64 | RIPE NCC | DE | 23rd Jul 2004 |
| 2001:7f8:2c::/48 | 65.5k × /64 | RIPE NCC | DE | 23rd Jul 2004 |
| 2001:7f8:2d::/48 | 65.5k × /64 | RIPE NCC |  FR | 13th Sept 2004 |
| 2001:7f8:2e::/48 | 65.5k × /64 | RIPE NCC |  MD | 26th May 2015 |
| 2001:7f8:2f::/48 | 65.5k × /64 | RIPE NCC |  SK | 25th Oct 2004 |
| 2001:7f8:30::/48 | 65.5k × /64 | RIPE NCC | AT | 18th Nov 2004 |
| 2001:7f8:31::/48 | 65.5k × /64 | RIPE NCC |  KZ | 20th Feb 2023 |
| 2001:7f8:32::/48 | 65.5k × /64 | RIPE NCC | DE | 30th Jun 2015 |
| 2001:7f8:33::/48 | 65.5k × /64 | RIPE NCC | DE | 9th Aug 2005 |
| 2001:7f8:34::/48 | 65.5k × /64 | RIPE NCC | GB | 27th Nov 2020 |
| 2001:7f8:35::/48 | 65.5k × /64 | RIPE NCC |  HU | 5th Sept 2005 |
| 2001:7f8:36::/48 | 65.5k × /64 | RIPE NCC | DE | 3rd Aug 2015 |
| 2001:7f8:37::/48 | 65.5k × /64 | RIPE NCC |  GR | 16th Jun 2025 |