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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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:e700::/32 | 4.3B × /64 | LACNIC |  HN | 11th Jun 2013 |
| 2803:e730::/32 | 4.3B × /64 | LACNIC |  AR | 8th Sept 2026 |
| 2803:e760::/32 | 4.3B × /64 | LACNIC | AR | 25th Oct 2019 |
| 2803:e780::/32 | 4.3B × /64 | LACNIC |  PY | 22nd Dec 2014 |
| 2803:e7c0::/32 | 4.3B × /64 | LACNIC |  CL | 11th Jul 2017 |
| 2803:e7e0::/32 | 4.3B × /64 | LACNIC | CL | 26th Aug 2020 |
| 2803:e800::/32 | 4.3B × /64 | LACNIC | CL | 12th Mar 2012 |
| 2803:e810::/32 | 4.3B × /64 | LACNIC | AR | 4th Dec 2020 |
| 2803:e860::/32 | 4.3B × /64 | LACNIC | AR | 4th Apr 2019 |
| 2803:e890::/32 | 4.3B × /64 | LACNIC |  PE | 1st Jun 2022 |
| 2803:e8b0::/32 | 4.3B × /64 | LACNIC |  VE | 28th Oct 2026 |
| 2803:e8c0::/32 | 4.3B × /64 | LACNIC | CL | 21st Sept 2016 |
| 2803:e8d0::/32 | 4.3B × /64 | LACNIC | AR | 26th Nov 2024 |
| 2803:e920::/32 | 4.3B × /64 | LACNIC | CL | 12th Dec 2017 |
| 2803:e940::/32 | 4.3B × /64 | LACNIC | AR | 9th Dec 2015 |
| 2803:e9a0::/32 | 4.3B × /64 | LACNIC | AR | 1st Nov 2018 |
| 2803:e9c0::/32 | 4.3B × /64 | LACNIC | AR | 7th Apr 2017 |
| 2803:e9e0::/32 | 4.3B × /64 | LACNIC | AR | 2nd Jun 2020 |
| 2803:ea00::/32 | 4.3B × /64 | LACNIC | AR | 13th Jul 2012 |
| 2803:ea20::/32 | 4.3B × /64 | LACNIC | AR | 25th Oct 2017 |
| 2803:ea30::/32 | 4.3B × /64 | LACNIC | AR | 1st Apr 2026 |
| 2803:ea40::/32 | 4.3B × /64 | LACNIC | AR | 17th Aug 2015 |
| 2803:eaa0::/32 | 4.3B × /64 | LACNIC | AR | 1st Aug 2018 |
| 2803:ead0::/32 | 4.3B × /64 | LACNIC | CL | 19th Mar 2025 |
| 2803:eae0::/32 | 4.3B × /64 | LACNIC | CL | 17th Feb 2020 |
| 2803:eb00::/32 | 4.3B × /64 | LACNIC | AR | 14th May 2013 |
| 2803:eb20::/32 | 4.3B × /64 | LACNIC | AR | 28th Feb 2018 |
| 2803:eb30::/32 | 4.3B × /64 | LACNIC | VE | 18th Aug 2026 |
| 2803:eba0::/32 | 4.3B × /64 | LACNIC | AR | 28th Jan 2019 |
| 2803:ebd0::/32 | 4.3B × /64 | LACNIC |  DO | 14th Oct 2025 |
| 2803:ec00::/32 | 4.3B × /64 | LACNIC | AR | 2nd May 2012 |
| 2803:ec10::/32 | 4.3B × /64 | LACNIC | VE | 8th Mar 2021 |
| 2803:ec20::/32 | 4.3B × /64 | LACNIC |  EC | 28th Sept 2017 |
| 2803:ec60::/32 | 4.3B × /64 | LACNIC | AR | 10th May 2019 |
| 2803:eca0::/32 | 4.3B × /64 | LACNIC | AR | 29th Jun 2018 |
| 2803:ece0::/32 | 4.3B × /64 | LACNIC | AR | 17th Jan 2020 |
| 2803:ed10::/32 | 4.3B × /64 | LACNIC | VE | 14th Jan 2022 |
| 2803:ed20::/32 | 4.3B × /64 | LACNIC | AR | 19th Jan 2018 |
| 2803:ed40::/32 | 4.3B × /64 | LACNIC |  PA | 25th Feb 2016 |
| 2803:ed80::/32 | 4.3B × /64 | LACNIC | CL | 12th Aug 2014 |
| 2803:eda0::/32 | 4.3B × /64 | LACNIC | AR | 10th Dec 2018 |
| 2803:ee00::/32 | 4.3B × /64 | LACNIC | AR | 10th Sept 2012 |
| 2803:ee0::/32 | 4.3B × /64 | LACNIC | AR | 31st Mar 2020 |
| 2803:ee10::/32 | 4.3B × /64 | LACNIC | AR | 6th Sept 2021 |
| 2803:ee30::/32 | 4.3B × /64 | LACNIC |  GT | 24th Apr 2026 |
| 2803:ee40::/32 | 4.3B × /64 | LACNIC |  CR | 9th Oct 2015 |
| 2803:ee80::/32 | 4.3B × /64 | LACNIC | AR | 13th May 2014 |
| 2803:eea0::/32 | 4.3B × /64 | LACNIC | AR | 18th Sept 2018 |
| 2803:ef30::/32 | 4.3B × /64 | LACNIC | EC | 23rd Sept 2026 |
| 2803:ef40::/32 | 4.3B × /64 | LACNIC | AR | 4th Aug 2016 |