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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
24,875 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2001:678:f8c::/48 | 65.5k × /64 | RIPE NCC | 29th Jun 2021 | |
| 2001:678:f90::/48 | 65.5k × /64 | RIPE NCC | 29th Jun 2021 | |
| 2001:678:fa0::/48 | 65.5k × /64 | RIPE NCC | 6th Jul 2021 | |
| 2001:678:fa4::/48 | 65.5k × /64 | RIPE NCC | 6th Jul 2021 | |
| 2001:678:fbc::/48 | 65.5k × /64 | RIPE NCC | 14th Jul 2021 | |
| 2001:678:fc4::/48 | 65.5k × /64 | RIPE NCC | 16th Jul 2021 | |
| 2001:678:fc::/48 | 65.5k × /64 | RIPE NCC | 21st Jan 2016 | |
| 2001:678:fd8::/48 | 65.5k × /64 | RIPE NCC | 20th Jul 2021 | |
| 2001:678:fe4::/48 | 65.5k × /64 | RIPE NCC | 22nd Jul 2021 | |
| 2001:678:fe8::/48 | 65.5k × /64 | RIPE NCC | 22nd Jul 2021 | |
| 2001:67c:100::/48 | 65.5k × /64 | RIPE NCC | 19th Aug 2021 | |
| 2001:67c:1018::/47 | 131k × /64 | RIPE NCC | 1st Jun 2010 | |
| 2001:67c:1020::/47 | 131k × /64 | RIPE NCC | 5th Nov 2010 | |
| 2001:67c:1030::/48 | 65.5k × /64 | RIPE NCC | 19th Jul 2012 | |
| 2001:67c:1038::/48 | 65.5k × /64 | RIPE NCC | 20th Jul 2012 | |
| 2001:67c:1040::/48 | 65.5k × /64 | RIPE NCC | 17th Aug 2021 | |
| 2001:67c:1048::/48 | 65.5k × /64 | RIPE NCC | 7th Aug 2012 | |
| 2001:67c:104c::/48 | 65.5k × /64 | RIPE NCC | 7th May 2025 | |
| 2001:67c:1054::/48 | 65.5k × /64 | RIPE NCC | 9th Aug 2012 | |
| 2001:67c:105c::/48 | 65.5k × /64 | RIPE NCC | 9th Aug 2012 | |
| 2001:67c:1060::/48 | 65.5k × /64 | RIPE NCC | 10th Aug 2012 | |
| 2001:67c:1068::/48 | 65.5k × /64 | RIPE NCC | 13th Aug 2012 | |
| 2001:67c:1078::/48 | 65.5k × /64 | RIPE NCC | 15th Aug 2012 | |
| 2001:67c:107c::/48 | 65.5k × /64 | RIPE NCC | 17th Apr 2025 | |
| 2001:67c:10a0::/48 | 65.5k × /64 | RIPE NCC | 9th Apr 2021 | |
| 2001:67c:10c0::/48 | 65.5k × /64 | RIPE NCC | 11th Sept 2012 | |
| 2001:67c:10c4::/48 | 65.5k × /64 | RIPE NCC | 11th Sept 2012 | |
| 2001:67c:10dc::/48 | 65.5k × /64 | RIPE NCC | 13th Sept 2012 | |
| 2001:67c:10f0::/48 | 65.5k × /64 | RIPE NCC | 19th Sept 2012 | |
| 2001:67c:1100::/48 | 65.5k × /64 | RIPE NCC | 6th Dec 2012 | |
| 2001:67c:111c::/48 | 65.5k × /64 | RIPE NCC | 11th Dec 2012 | |
| 2001:67c:1120::/48 | 65.5k × /64 | RIPE NCC | 11th Dec 2012 | |
| 2001:67c:112c::/48 | 65.5k × /64 | RIPE NCC | 22nd May 2023 | |
| 2001:67c:1130::/48 | 65.5k × /64 | RIPE NCC | 17th Dec 2012 | |
| 2001:67c:113c::/48 | 65.5k × /64 | RIPE NCC | 17th Dec 2012 | |
| 2001:67c:1140::/48 | 65.5k × /64 | RIPE NCC | 17th Dec 2012 | |
| 2001:67c:1144::/48 | 65.5k × /64 | RIPE NCC | 8th Sept 2026 | |
| 2001:67c:114::/48 | 65.5k × /64 | RIPE NCC | 10th Feb 2026 | |
| 2001:67c:114c::/48 | 65.5k × /64 | RIPE NCC | 15th Feb 2023 | |
| 2001:67c:1150::/48 | 65.5k × /64 | RIPE NCC | 19th Dec 2012 | |
| 2001:67c:1154::/48 | 65.5k × /64 | RIPE NCC | 20th Dec 2012 | |
| 2001:67c:1158::/48 | 65.5k × /64 | RIPE NCC | 24th May 2023 | |
| 2001:67c:1164::/48 | 65.5k × /64 | RIPE NCC | 30th Jan 2017 | |
| 2001:67c:1168::/48 | 65.5k × /64 | RIPE NCC | 29th Apr 2015 | |
| 2001:67c:116c::/48 | 65.5k × /64 | RIPE NCC | 21st Dec 2012 | |
| 2001:67c:1178::/48 | 65.5k × /64 | RIPE NCC | 24th Dec 2012 | |
| 2001:67c:1180::/48 | 65.5k × /64 | RIPE NCC | 6th Dec 2017 | |
| 2001:67c:1188::/48 | 65.5k × /64 | RIPE NCC | 3rd Jan 2013 | |
| 2001:67c:118c::/48 | 65.5k × /64 | RIPE NCC | 4th Jan 2013 | |
| 2001:67c:1190::/48 | 65.5k × /64 | RIPE NCC | 25th Feb 2019 |