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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
85,239 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2803:7500::/32 | 4.3B × /64 | LACNIC |  CL | 30th Jan 2013 |
| 2803:750::/32 | 4.3B × /64 | LACNIC |  AR | 5th Sept 2024 |
| 2803:7540::/32 | 4.3B × /64 | LACNIC | AR | 4th Feb 2016 |
| 2803:7550::/32 | 4.3B × /64 | LACNIC | AR | 21st Jun 2024 |
| 2803:7560::/32 | 4.3B × /64 | LACNIC | AR | 28th Aug 2019 |
| 2803:7580::/32 | 4.3B × /64 | LACNIC | AR | 25th Jul 2014 |
| 2803:75c0::/32 | 4.3B × /64 | LACNIC |  VE | 15th May 2017 |
| 2803:75d0::/32 | 4.3B × /64 | LACNIC | AR | 7th Aug 2025 |
| 2803:75e0::/32 | 4.3B × /64 | LACNIC | AR | 26th Jun 2020 |
| 2803:7620::/32 | 4.3B × /64 | LACNIC | AR | 9th Nov 2017 |
| 2803:7660::/32 | 4.3B × /64 | LACNIC | AR | 20th Jun 2019 |
| 2803:7680::/32 | 4.3B × /64 | LACNIC |  BO | 2nd May 2014 |
| 2803:76a0::/32 | 4.3B × /64 | LACNIC | CL | 6th Sept 2018 |
| 2803:7700::/32 | 4.3B × /64 | LACNIC | AR | 25th Jun 2013 |
| 2803:7720::/32 | 4.3B × /64 | LACNIC | AR | 5th Apr 2018 |
| 2803:77c0::/32 | 4.3B × /64 | LACNIC | AR | 14th Jul 2017 |
| 2803:77e0::/32 | 4.3B × /64 | LACNIC |  GY | 28th Aug 2020 |
| 2803:7840::/32 | 4.3B × /64 | LACNIC | AR | 20th May 2015 |
| 2803:78c0::/32 | 4.3B × /64 | LACNIC | AR | 5th Oct 2016 |
| 2803:78e0::/32 | 4.3B × /64 | LACNIC | AR | 23rd Dec 2019 |
| 2803:7920::/32 | 4.3B × /64 | LACNIC |  GT | 19th Dec 2017 |
| 2803:7930::/32 | 4.3B × /64 | LACNIC | VE | 17th Jun 2026 |
| 2803:7940::/32 | 4.3B × /64 | LACNIC | AR | 22nd Dec 2015 |
| 2803:7960::/32 | 4.3B × /64 | LACNIC |  PY | 9th Aug 2019 |
| 2803:7980::/32 | 4.3B × /64 | LACNIC | VE | 1st Jul 2014 |
| 2803:79a0::/32 | 4.3B × /64 | LACNIC | AR | 15th Nov 2018 |
| 2803:79d0::/32 | 4.3B × /64 | LACNIC |  PE | 8th Jul 2025 |
| 2803:79e0::/32 | 4.3B × /64 | LACNIC | CL | 5th Jun 2020 |
| 2803:7a0::/32 | 4.3B × /64 | LACNIC |  DO | 13th Feb 2019 |
| 2803:7a40::/32 | 4.3B × /64 | LACNIC | AR | 26th Aug 2015 |
| 2803:7a60::/32 | 4.3B × /64 | LACNIC | AR | 7th Jun 2019 |
| 2803:7aa0::/32 | 4.3B × /64 | LACNIC | CL | 14th Aug 2018 |
| 2803:7ad0::/32 | 4.3B × /64 | LACNIC |  EC | 8th Apr 2025 |
| 2803:7b00::/32 | 4.3B × /64 | LACNIC | CL | 28th May 2013 |
| 2803:7b10::/32 | 4.3B × /64 | LACNIC | DO | 16th Mar 2022 |
| 2803:7b30::/32 | 4.3B × /64 | LACNIC | EC | 27th Aug 2026 |
| 2803:7b40::/32 | 4.3B × /64 | LACNIC | CL | 9th Jun 2016 |
| 2803:7b60::/32 | 4.3B × /64 | LACNIC | AR | 16th Oct 2019 |
| 2803:7b80::/32 | 4.3B × /64 | LACNIC | PE | 12th Nov 2014 |
| 2803:7b90::/32 | 4.3B × /64 | LACNIC | PE | 7th Aug 2023 |
| 2803:7bc0::/32 | 4.3B × /64 | LACNIC |  PA | 5th Jul 2017 |
| 2803:7c0::/32 | 4.3B × /64 | LACNIC | AR | 6th Jul 2017 |
| 2803:7c20::/32 | 4.3B × /64 | LACNIC | EC | 5th Oct 2017 |
| 2803:7c30::/32 | 4.3B × /64 | LACNIC | AR | 26th Feb 2026 |
| 2803:7c60::/32 | 4.3B × /64 | LACNIC |  CO | 16th May 2019 |
| 2803:7cd0::/32 | 4.3B × /64 | LACNIC | CO | 5th Feb 2025 |
| 2803:7d20::/32 | 4.3B × /64 | LACNIC | VE | 24th Jan 2018 |
| 2803:7d30::/32 | 4.3B × /64 | LACNIC | EC | 23rd Jul 2026 |
| 2803:7d60::/32 | 4.3B × /64 | LACNIC | GT | 10th Sept 2019 |
| 2803:7da0::/32 | 4.3B × /64 | LACNIC | PE | 27th Dec 2018 |