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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 Mexico
659 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2801:c4:25f::/48 | 65.5k × /64 | LACNIC | 10th Nov 2023 | |
| 2801:c4:260::/44 | 1M × /64 | LACNIC | 8th Nov 2023 | |
| 2801:c4:270::/48 | 65.5k × /64 | LACNIC | 13th Oct 2023 | |
| 2801:c4:271::/48 | 65.5k × /64 | LACNIC | 13th Oct 2023 | |
| 2801:c4:278::/48 | 65.5k × /64 | LACNIC | 31st Aug 2023 | |
| 2801:c4:279::/48 | 65.5k × /64 | LACNIC | 9th Oct 2023 | |
| 2801:c4:27::/48 | 65.5k × /64 | LACNIC | 27th Dec 2019 | |
| 2801:c4:27c::/48 | 65.5k × /64 | LACNIC | 22nd Aug 2025 | |
| 2801:c4:280::/44 | 1M × /64 | LACNIC | 4th Oct 2023 | |
| 2801:c4:291::/48 | 65.5k × /64 | LACNIC | 16th Oct 2024 | |
| 2801:c4:293::/48 | 65.5k × /64 | LACNIC | 29th May 2024 | |
| 2801:c4:295::/48 | 65.5k × /64 | LACNIC | 21st Feb 2024 | |
| 2801:c4:298::/48 | 65.5k × /64 | LACNIC | 15th Dec 2023 | |
| 2801:c4:29::/48 | 65.5k × /64 | LACNIC | 26th Aug 2020 | |
| 2801:c4:29c::/46 | 262k × /64 | LACNIC | 27th May 2024 | |
| 2801:c4:2a0::/48 | 65.5k × /64 | LACNIC | 13th May 2024 | |
| 2801:c4:2a2::/48 | 65.5k × /64 | LACNIC | 13th Feb 2024 | |
| 2801:c4:2a5::/48 | 65.5k × /64 | LACNIC | 28th May 2024 | |
| 2801:c4:2a6::/48 | 65.5k × /64 | LACNIC | 28th May 2024 | |
| 2801:c4:2a::/48 | 65.5k × /64 | LACNIC | 9th Sept 2020 | |
| 2801:c4:2ab::/48 | 65.5k × /64 | LACNIC | 30th May 2024 | |
| 2801:c4:2ac::/46 | 262k × /64 | LACNIC | 29th May 2024 | |
| 2801:c4:2b::/48 | 65.5k × /64 | LACNIC | 25th Jul 2023 | |
| 2801:c4:2c0::/44 | 1M × /64 | LACNIC | 19th Jul 2024 | |
| 2801:c4:2c::/48 | 65.5k × /64 | LACNIC | 9th Sept 2020 | |
| 2801:c4:2d1::/48 | 65.5k × /64 | LACNIC | 31st May 2024 | |
| 2801:c4:2f0::/44 | 1M × /64 | LACNIC | 2nd May 2024 | |
| 2801:c4:2f::/48 | 65.5k × /64 | LACNIC | 22nd Jul 2022 | |
| 2801:c4:30::/48 | 65.5k × /64 | LACNIC | 14th May 2012 | |
| 2801:c4:31::/48 | 65.5k × /64 | LACNIC | 18th Jun 2022 | |
| 2801:c4:33::/48 | 65.5k × /64 | LACNIC | 26th Oct 2023 | |
| 2801:c4:34::/48 | 65.5k × /64 | LACNIC | 30th Oct 2022 | |
| 2801:c4:35::/48 | 65.5k × /64 | LACNIC | 13th May 2024 | |
| 2801:c4:38::/48 | 65.5k × /64 | LACNIC | 9th Nov 2023 | |
| 2801:c4:39::/48 | 65.5k × /64 | LACNIC | 31st May 2024 | |
| 2801:c4:3c::/48 | 65.5k × /64 | LACNIC | 12th Dec 2023 | |
| 2801:c4:3d::/48 | 65.5k × /64 | LACNIC | 7th Nov 2023 | |
| 2801:c4:3e::/48 | 65.5k × /64 | LACNIC | 7th Feb 2024 | |
| 2801:c4:3f::/48 | 65.5k × /64 | LACNIC | 23rd Oct 2023 | |
| 2801:c4:400::/39 | 33.6M × /64 | LACNIC | 14th Nov 2023 | |
| 2801:c4:50::/48 | 65.5k × /64 | LACNIC | 9th Aug 2012 | |
| 2801:c4:60::/48 | 65.5k × /64 | LACNIC | 18th Jul 2012 | |
| 2801:c4:700::/42 | 4.2M × /64 | LACNIC | 18th Jun 2024 | |
| 2801:c4:80::/48 | 65.5k × /64 | LACNIC | 19th Nov 2013 | |
| 2801:c4:91::/48 | 65.5k × /64 | LACNIC | 13th Dec 2022 | |
| 2801:c4:94::/48 | 65.5k × /64 | LACNIC | 28th Sept 2023 | |
| 2801:c4::/48 | 65.5k × /64 | LACNIC | 5th Sept 2011 | |
| 2801:c4:a0::/48 | 65.5k × /64 | LACNIC | 29th Nov 2013 | |
| 2801:c4:a3::/48 | 65.5k × /64 | LACNIC | 1st Sept 2023 | |
| 2801:c4:a7::/48 | 65.5k × /64 | LACNIC | 5th Sept 2023 |