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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 2803:80e0::/32 | 4.3B × /64 | LACNIC |  VE | 22nd Nov 2019 |
| 2803:8110::/32 | 4.3B × /64 | LACNIC |  AR | 18th Sept 2021 |
| 2803:8120::/32 | 4.3B × /64 | LACNIC | AR | 23rd Nov 2017 |
| 2803:8130::/32 | 4.3B × /64 | LACNIC | AR | 7th May 2026 |
| 2803:8140::/32 | 4.3B × /64 | LACNIC |  CL | 19th Oct 2015 |
| 2803:81a0::/32 | 4.3B × /64 | LACNIC | AR | 27th Sept 2018 |
| 2803:8210::/32 | 4.3B × /64 | LACNIC |  PE | 24th Mar 2021 |
| 2803:8230::/32 | 4.3B × /64 | LACNIC | VE | 27th Feb 2026 |
| 2803:82e0::/32 | 4.3B × /64 | LACNIC | AR | 22nd Jan 2020 |
| 2803:8300::/32 | 4.3B × /64 | LACNIC |  EC | 18th Mar 2013 |
| 2803:8320::/32 | 4.3B × /64 | LACNIC | CL | 29th Jan 2018 |
| 2803:8350::/32 | 4.3B × /64 | LACNIC | PE | 17th Jul 2024 |
| 2803:8380::/32 | 4.3B × /64 | LACNIC | AR | 1st Sept 2014 |
| 2803:8390::/32 | 4.3B × /64 | LACNIC | CL | 24th May 2023 |
| 2803:83c0::/32 | 4.3B × /64 | LACNIC | AR | 31st May 2017 |
| 2803:83d0::/32 | 4.3B × /64 | LACNIC |  UY | 17th Sept 2025 |
| 2803:83e0::/32 | 4.3B × /64 | LACNIC | AR | 22nd Jul 2020 |
| 2803:8400::/32 | 4.3B × /64 | LACNIC |  CO | 20th Mar 2012 |
| 2803:8410::/32 | 4.3B × /64 | LACNIC | AR | 14th Jan 2021 |
| 2803:8430::/32 | 4.3B × /64 | LACNIC | AR | 16th Jan 2026 |
| 2803:8440::/32 | 4.3B × /64 | LACNIC | AR | 26th May 2015 |
| 2803:8450::/32 | 4.3B × /64 | LACNIC | CO | 9th Nov 2023 |
| 2803:8480::/32 | 4.3B × /64 | LACNIC | AR | 29th Oct 2013 |
| 2803:8520::/32 | 4.3B × /64 | LACNIC | EC | 21st Dec 2017 |
| 2803:8550::/32 | 4.3B × /64 | LACNIC | CO | 6th Jun 2024 |
| 2803:8560::/32 | 4.3B × /64 | LACNIC | AR | 14th Aug 2019 |
| 2803:85a0::/32 | 4.3B × /64 | LACNIC | CL | 20th Nov 2018 |
| 2803:860::/32 | 4.3B × /64 | LACNIC | AR | 29th Mar 2019 |
| 2803:8620::/32 | 4.3B × /64 | LACNIC | AR | 30th Oct 2017 |
| 2803:8640::/32 | 4.3B × /64 | LACNIC | AR | 1st Sept 2015 |
| 2803:8660::/32 | 4.3B × /64 | LACNIC | AR | 10th Jun 2019 |
| 2803:8680::/32 | 4.3B × /64 | LACNIC | AR | 1st Apr 2014 |
| 2803:86a0::/32 | 4.3B × /64 | LACNIC | AR | 16th Aug 2018 |
| 2803:86c0::/32 | 4.3B × /64 | LACNIC |  HN | 6th Feb 2017 |
| 2803:8720::/32 | 4.3B × /64 | LACNIC |  GT | 15th Mar 2018 |
| 2803:8740::/32 | 4.3B × /64 | LACNIC | AR | 17th Jun 2016 |
| 2803:8760::/32 | 4.3B × /64 | LACNIC | AR | 22nd Oct 2019 |
| 2803:8800::/32 | 4.3B × /64 | LACNIC |  CR | 24th Feb 2012 |
| 2803:880::/32 | 4.3B × /64 | LACNIC | AR | 4th Sept 2013 |
| 2803:8830::/32 | 4.3B × /64 | LACNIC | VE | 23rd Dec 2025 |
| 2803:8840::/32 | 4.3B × /64 | LACNIC |  SV | 23rd Apr 2015 |
| 2803:8860::/32 | 4.3B × /64 | LACNIC | CL | 29th Mar 2019 |
| 2803:8880::/32 | 4.3B × /64 | LACNIC |  NI | 12th Sept 2013 |
| 2803:88a0::/32 | 4.3B × /64 | LACNIC | AR | 11th May 2018 |
| 2803:88b0::/32 | 4.3B × /64 | LACNIC | AR | 21st Oct 2026 |
| 2803:88e0::/32 | 4.3B × /64 | LACNIC |  DO | 9th Dec 2019 |
| 2803:8980::/32 | 4.3B × /64 | LACNIC | CO | 12th Jun 2014 |
| 2803:89a0::/32 | 4.3B × /64 | LACNIC | AR | 25th Oct 2018 |
| 2803:89c0::/32 | 4.3B × /64 | LACNIC | HN | 3rd Apr 2017 |
| 2803:8a20::/32 | 4.3B × /64 | LACNIC | AR | 18th Oct 2017 |