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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
84,481 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2803:d580::/32 | 4.3B × /64 | LACNIC |  CL | 23rd Jul 2014 |
| 2803:d5a0::/32 | 4.3B × /64 | LACNIC | CL | 28th Nov 2018 |
| 2803:d5d0::/32 | 4.3B × /64 | LACNIC |  PE | 5th Aug 2025 |
| 2803:d5e0::/32 | 4.3B × /64 | LACNIC |  CO | 24th Jun 2020 |
| 2803:d620::/32 | 4.3B × /64 | LACNIC |  AR | 6th Nov 2017 |
| 2803:d630::/32 | 4.3B × /64 | LACNIC | PE | 17th Apr 2026 |
| 2803:d660::/32 | 4.3B × /64 | LACNIC | AR | 13th Jun 2019 |
| 2803:d690::/32 | 4.3B × /64 | LACNIC | AR | 1st Nov 2022 |
| 2803:d6a0::/32 | 4.3B × /64 | LACNIC | AR | 31st Aug 2018 |
| 2803:d6e0::/32 | 4.3B × /64 | LACNIC | AR | 11th Mar 2020 |
| 2803:d720::/32 | 4.3B × /64 | LACNIC | AR | 28th Mar 2018 |
| 2803:d730::/32 | 4.3B × /64 | LACNIC |  PA | 11th Sept 2026 |
| 2803:d750::/32 | 4.3B × /64 | LACNIC | PE | 17th Sept 2024 |
| 2803:d780::/32 | 4.3B × /64 | LACNIC | CL | 9th Jan 2015 |
| 2803:d7a0::/32 | 4.3B × /64 | LACNIC | AR | 25th Feb 2019 |
| 2803:d7c0::/32 | 4.3B × /64 | LACNIC | AR | 13th Jul 2017 |
| 2803:d7e0::/32 | 4.3B × /64 | LACNIC | CL | 28th Aug 2020 |
| 2803:d800::/32 | 4.3B × /64 | LACNIC | AR | 16th Mar 2012 |
| 2803:d820::/32 | 4.3B × /64 | LACNIC | AR | 4th Sept 2017 |
| 2803:d840::/32 | 4.3B × /64 | LACNIC | PA | 18th May 2015 |
| 2803:d860::/32 | 4.3B × /64 | LACNIC | CL | 9th Apr 2019 |
| 2803:d880::/32 | 4.3B × /64 | LACNIC |  CR | 16th Oct 2013 |
| 2803:d8c0::/32 | 4.3B × /64 | LACNIC | AR | 28th Sept 2016 |
| 2803:d8d0::/32 | 4.3B × /64 | LACNIC |  VE | 2nd Dec 2024 |
| 2803:d8e0::/32 | 4.3B × /64 | LACNIC | VE | 17th Dec 2019 |
| 2803:d920::/32 | 4.3B × /64 | LACNIC | AR | 18th Dec 2017 |
| 2803:d930::/32 | 4.3B × /64 | LACNIC | PE | 11th Jun 2026 |
| 2803:d950::/32 | 4.3B × /64 | LACNIC |  GT | 24th May 2024 |
| 2803:d960::/32 | 4.3B × /64 | LACNIC | AR | 6th Aug 2019 |
| 2803:d9d0::/32 | 4.3B × /64 | LACNIC | CR | 2nd Jul 2025 |
| 2803:da0::/32 | 4.3B × /64 | LACNIC | AR | 30th Nov 2018 |
| 2803:da40::/32 | 4.3B × /64 | LACNIC | AR | 18th Aug 2015 |
| 2803:da80::/32 | 4.3B × /64 | LACNIC | AR | 21st Mar 2014 |
| 2803:daa0::/32 | 4.3B × /64 | LACNIC | CR | 2nd Aug 2018 |
| 2803:dad0::/32 | 4.3B × /64 | LACNIC | AR | 31st Mar 2025 |
| 2803:dae0::/32 | 4.3B × /64 | LACNIC | AR | 17th Feb 2020 |
| 2803:db20::/32 | 4.3B × /64 | LACNIC | AR | 8th Mar 2018 |
| 2803:db60::/32 | 4.3B × /64 | LACNIC | PA | 14th Oct 2019 |
| 2803:db80::/32 | 4.3B × /64 | LACNIC | CL | 4th Nov 2014 |
| 2803:dba0::/32 | 4.3B × /64 | LACNIC |  PY | 4th Feb 2019 |
| 2803:dc0::/32 | 4.3B × /64 | LACNIC | AR | 15th May 2017 |
| 2803:dc10::/32 | 4.3B × /64 | LACNIC | AR | 15th Mar 2021 |
| 2803:dc80::/32 | 4.3B × /64 | LACNIC | AR | 27th Dec 2013 |
| 2803:dca0::/32 | 4.3B × /64 | LACNIC | CL | 9th Jul 2018 |
| 2803:dcc0::/32 | 4.3B × /64 | LACNIC | CR | 28th Nov 2016 |
| 2803:dd20::/32 | 4.3B × /64 | LACNIC | AR | 23rd Jan 2018 |
| 2803:dd40::/32 | 4.3B × /64 | LACNIC | AR | 3rd Mar 2016 |
| 2803:dd50::/32 | 4.3B × /64 | LACNIC | PA | 9th Jul 2024 |
| 2803:dd60::/32 | 4.3B × /64 | LACNIC | PE | 9th Sept 2019 |
| 2803:ddc0::/32 | 4.3B × /64 | LACNIC | PE | 19th May 2017 |