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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
85,221 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 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:e2e0::/32 | 4.3B × /64 | LACNIC | GT | 29th Jan 2020 |
| 2803:e300::/32 | 4.3B × /64 | LACNIC |  CR | 5th Apr 2013 |
| 2803:e320::/32 | 4.3B × /64 | LACNIC | CL | 5th Feb 2018 |
| 2803:e330::/32 | 4.3B × /64 | LACNIC | CO | 31st Jul 2026 |
| 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 |
| 2803:e700::/32 | 4.3B × /64 | LACNIC | HN | 11th Jun 2013 |
| 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: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:e930::/32 | 4.3B × /64 | LACNIC | PE | 8th Jun 2026 |
| 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:eac0::/32 | 4.3B × /64 | LACNIC | CR | 24th Jan 2017 |
| 2803:ead0::/32 | 4.3B × /64 | LACNIC | CL | 19th Mar 2025 |
| 2803:eae0::/32 | 4.3B × /64 | LACNIC | CL | 17th Feb 2020 |