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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 in Argentina
828 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2803:4100::/32 | 4.3B × /64 | LACNIC |  AR | 28th Sept 2012 |
| 2803:4110::/32 | 4.3B × /64 | LACNIC | AR | 27th Sept 2021 |
| 2803:4130::/32 | 4.3B × /64 | LACNIC | AR | 8th May 2026 |
| 2803:4140::/32 | 4.3B × /64 | LACNIC | AR | 20th Oct 2015 |
| 2803:4260::/32 | 4.3B × /64 | LACNIC | AR | 21st May 2019 |
| 2803:4400::/32 | 4.3B × /64 | LACNIC | AR | 20th Mar 2012 |
| 2803:44a0::/32 | 4.3B × /64 | LACNIC | AR | 6th Jun 2018 |
| 2803:4550::/32 | 4.3B × /64 | LACNIC | AR | 6th Jun 2024 |
| 2803:4560::/32 | 4.3B × /64 | LACNIC | AR | 14th Aug 2019 |
| 2803:460::/32 | 4.3B × /64 | LACNIC | AR | 10th Apr 2019 |
| 2803:4660::/32 | 4.3B × /64 | LACNIC | AR | 10th Jun 2019 |
| 2803:4760::/32 | 4.3B × /64 | LACNIC | AR | 22nd Oct 2019 |
| 2803:47a0::/32 | 4.3B × /64 | LACNIC | AR | 15th Feb 2019 |
| 2803:48b0::/32 | 4.3B × /64 | LACNIC | AR | 22nd Oct 2026 |
| 2803:4940::/32 | 4.3B × /64 | LACNIC | AR | 20th Nov 2015 |
| 2803:4980::/32 | 4.3B × /64 | LACNIC | AR | 15th Jun 2014 |
| 2803:49c0::/32 | 4.3B × /64 | LACNIC | AR | 4th Apr 2017 |
| 2803:4b40::/32 | 4.3B × /64 | LACNIC | AR | 11th May 2016 |
| 2803:4b60::/32 | 4.3B × /64 | LACNIC | AR | 3rd Oct 2019 |
| 2803:4c40::/32 | 4.3B × /64 | LACNIC | AR | 25th Jun 2015 |
| 2803:4c80::/32 | 4.3B × /64 | LACNIC | AR | 21st Nov 2013 |
| 2803:4c90::/32 | 4.3B × /64 | LACNIC | AR | 25th Jul 2022 |
| 2803:4cc0::/32 | 4.3B × /64 | LACNIC | AR | 10th Nov 2016 |
| 2803:4d40::/32 | 4.3B × /64 | LACNIC | AR | 15th Feb 2016 |
| 2803:4d60::/32 | 4.3B × /64 | LACNIC | AR | 3rd Sept 2019 |
| 2803:4da0::/32 | 4.3B × /64 | LACNIC | AR | 30th Nov 2018 |
| 2803:4dd0::/32 | 4.3B × /64 | LACNIC | AR | 12th Aug 2025 |
| 2803:4e20::/32 | 4.3B × /64 | LACNIC | AR | 13th Nov 2017 |
| 2803:4e40::/32 | 4.3B × /64 | LACNIC | AR | 29th Sept 2015 |
| 2803:4f30::/32 | 4.3B × /64 | LACNIC | AR | 18th Sept 2026 |
| 2803:4f60::/32 | 4.3B × /64 | LACNIC | AR | 5th Nov 2019 |
| 2803:5090::/32 | 4.3B × /64 | LACNIC | AR | 16th May 2022 |
| 2803:50a0::/32 | 4.3B × /64 | LACNIC | AR | 8th May 2018 |
| 2803:510::/32 | 4.3B × /64 | LACNIC | AR | 26th Nov 2021 |
| 2803:51e0::/32 | 4.3B × /64 | LACNIC | AR | 18th May 2020 |
| 2803:520::/32 | 4.3B × /64 | LACNIC | AR | 21st Dec 2017 |
| 2803:52a0::/32 | 4.3B × /64 | LACNIC | AR | 17th Jul 2018 |
| 2803:5340::/32 | 4.3B × /64 | LACNIC | AR | 25th Apr 2016 |
| 2803:5400::/32 | 4.3B × /64 | LACNIC | AR | 10th Apr 2012 |
| 2803:5410::/32 | 4.3B × /64 | LACNIC | AR | 2nd Feb 2021 |
| 2803:5490::/32 | 4.3B × /64 | LACNIC | AR | 15th Jul 2022 |
| 2803:54d0::/32 | 4.3B × /64 | LACNIC | AR | 23rd Dec 2024 |
| 2803:5500::/32 | 4.3B × /64 | LACNIC | AR | 17th Dec 2012 |
| 2803:5540::/32 | 4.3B × /64 | LACNIC | AR | 27th Jan 2016 |
| 2803:560::/32 | 4.3B × /64 | LACNIC | AR | 13th Aug 2019 |
| 2803:5660::/32 | 4.3B × /64 | LACNIC | AR | 13th Jun 2019 |
| 2803:5690::/32 | 4.3B × /64 | LACNIC | AR | 31st Oct 2022 |
| 2803:5720::/32 | 4.3B × /64 | LACNIC | AR | 23rd Mar 2018 |
| 2803:57a0::/32 | 4.3B × /64 | LACNIC | AR | 25th Feb 2019 |
| 2803:57d0::/32 | 4.3B × /64 | LACNIC | AR | 7th Nov 2025 |