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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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.
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Countries with the most unannounced blocks, largest first.
Unannounced blocks
84,481 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2803:dde0::/32 | 4.3B × /64 | LACNIC |  SV | 13th Jul 2020 |
| 2803:de00::/32 | 4.3B × /64 | LACNIC |  AR | 17th Sept 2012 |
| 2803:de0::/32 | 4.3B × /64 | LACNIC | AR | 30th Jun 2020 |
| 2803:de30::/32 | 4.3B × /64 | LACNIC |  PE | 30th Apr 2026 |
| 2803:dec0::/32 | 4.3B × /64 | LACNIC | AR | 10th Mar 2017 |
| 2803:dee0::/32 | 4.3B × /64 | LACNIC |  CO | 30th Apr 2020 |
| 2803:df30::/32 | 4.3B × /64 | LACNIC |  VE | 30th Sept 2026 |
| 2803:df60::/32 | 4.3B × /64 | LACNIC | AR | 14th Nov 2019 |
| 2803:df80::/32 | 4.3B × /64 | LACNIC | AR | 13th Mar 2015 |
| 2803:dfd0::/32 | 4.3B × /64 | LACNIC |  CL | 27th Nov 2025 |
| 2803:dfe0::/32 | 4.3B × /64 | LACNIC | CL | 7th Sept 2020 |
| 2803:e00::/32 | 4.3B × /64 | LACNIC | CL | 3rd Sept 2012 |
| 2803:e010::/32 | 4.3B × /64 | LACNIC | AR | 17th Sept 2020 |
| 2803:e020::/32 | 4.3B × /64 | LACNIC | PE | 17th Aug 2017 |
| 2803:e040::/32 | 4.3B × /64 | LACNIC | AR | 6th Apr 2015 |
| 2803:e050::/32 | 4.3B × /64 | LACNIC | AR | 3rd Oct 2023 |
| 2803:e0a0::/32 | 4.3B × /64 | LACNIC | AR | 29th Apr 2018 |
| 2803:e0b0::/32 | 4.3B × /64 | LACNIC | CO | 13th Oct 2026 |
| 2803:e100::/32 | 4.3B × /64 | LACNIC | AR | 10th Oct 2012 |
| 2803:e10::/32 | 4.3B × /64 | LACNIC |  EC | 13th Aug 2021 |
| 2803:e160::/32 | 4.3B × /64 | LACNIC |  PY | 23rd Jul 2019 |
| 2803:e180::/32 | 4.3B × /64 | LACNIC | CL | 30th May 2014 |
| 2803:e1a0::/32 | 4.3B × /64 | LACNIC | AR | 3rd Oct 2018 |
| 2803:e1e0::/32 | 4.3B × /64 | LACNIC | AR | 18th May 2020 |
| 2803:e200::/32 | 4.3B × /64 | LACNIC | AR | 6th Jun 2012 |
| 2803:e20::/32 | 4.3B × /64 | LACNIC | AR | 9th Nov 2017 |
| 2803:e220::/32 | 4.3B × /64 | LACNIC | EC | 10th Oct 2017 |
| 2803:e240::/32 | 4.3B × /64 | LACNIC |  PA | 31st Jul 2015 |
| 2803:e260::/32 | 4.3B × /64 | LACNIC | CL | 24th May 2019 |
| 2803:e280::/32 | 4.3B × /64 | LACNIC | AR | 3rd Feb 2014 |
| 2803:e290::/32 | 4.3B × /64 | LACNIC |  GT | 7th Sept 2022 |
| 2803:e2a0::/32 | 4.3B × /64 | LACNIC | AR | 17th Jul 2018 |
| 2803:e2c0::/32 | 4.3B × /64 | LACNIC | CO | 26th Dec 2016 |
| 2803:e300::/32 | 4.3B × /64 | LACNIC |  CR | 5th Apr 2013 |
| 2803:e310::/32 | 4.3B × /64 | LACNIC | AR | 1st Feb 2022 |
| 2803:e320::/32 | 4.3B × /64 | LACNIC | CL | 5th Feb 2018 |
| 2803:e380::/32 | 4.3B × /64 | LACNIC |  HN | 12th Sept 2014 |
| 2803:e3a0::/32 | 4.3B × /64 | LACNIC | VE | 15th Jan 2019 |
| 2803:e3c0::/32 | 4.3B × /64 | LACNIC | AR | 1st Jun 2017 |
| 2803:e460::/32 | 4.3B × /64 | LACNIC | AR | 23rd Apr 2019 |
| 2803:e490::/32 | 4.3B × /64 | LACNIC | PY | 12th Jul 2022 |
| 2803:e4c0::/32 | 4.3B × /64 | LACNIC | CL | 25th Oct 2016 |
| 2803:e540::/32 | 4.3B × /64 | LACNIC | AR | 22nd Jan 2016 |
| 2803:e550::/32 | 4.3B × /64 | LACNIC | VE | 14th Jun 2024 |
| 2803:e580::/32 | 4.3B × /64 | LACNIC | CO | 11th Jul 2014 |
| 2803:e5a0::/32 | 4.3B × /64 | LACNIC | AR | 21st Nov 2018 |
| 2803:e660::/32 | 4.3B × /64 | LACNIC | AR | 13th Jun 2019 |
| 2803:e6a0::/32 | 4.3B × /64 | LACNIC | AR | 24th Aug 2018 |
| 2803:e6c0::/32 | 4.3B × /64 | LACNIC | SV | 8th Feb 2017 |
| 2803:e6d0::/32 | 4.3B × /64 | LACNIC | CL | 21st Apr 2025 |