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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
84,502 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2806:305::/32 | 4.3B × /64 | LACNIC |  MX | 16th Jul 2018 |
| 2806:306::/32 | 4.3B × /64 | LACNIC | MX | 28th Sept 2018 |
| 2806:307::/32 | 4.3B × /64 | LACNIC | MX | 10th Oct 2018 |
| 2806:308::/32 | 4.3B × /64 | LACNIC | MX | 8th Nov 2018 |
| 2806:30a::/32 | 4.3B × /64 | LACNIC | MX | 5th Oct 2018 |
| 2806:30d::/32 | 4.3B × /64 | LACNIC | MX | 23rd Oct 2018 |
| 2806:30e::/32 | 4.3B × /64 | LACNIC | MX | 7th Nov 2018 |
| 2806:311::/32 | 4.3B × /64 | LACNIC | MX | 23rd Nov 2018 |
| 2806:313::/32 | 4.3B × /64 | LACNIC | MX | 4th Dec 2018 |
| 2806:314::/32 | 4.3B × /64 | LACNIC | MX | 29th Nov 2018 |
| 2806:315::/32 | 4.3B × /64 | LACNIC | MX | 22nd Nov 2018 |
| 2806:317::/32 | 4.3B × /64 | LACNIC | MX | 26th Nov 2018 |
| 2806:318::/32 | 4.3B × /64 | LACNIC | MX | 17th Jan 2019 |
| 2806:31a::/32 | 4.3B × /64 | LACNIC | MX | 18th Dec 2018 |
| 2806:31c::/32 | 4.3B × /64 | LACNIC | MX | 16th Apr 2019 |
| 2806:31d::/32 | 4.3B × /64 | LACNIC | MX | 31st Jan 2019 |
| 2806:31f::/32 | 4.3B × /64 | LACNIC | MX | 30th Jan 2019 |
| 2806:321::/32 | 4.3B × /64 | LACNIC | MX | 7th Feb 2019 |
| 2806:323::/32 | 4.3B × /64 | LACNIC | MX | 13th Mar 2019 |
| 2806:326::/32 | 4.3B × /64 | LACNIC | MX | 10th Apr 2019 |
| 2806:328::/32 | 4.3B × /64 | LACNIC | MX | 22nd Apr 2019 |
| 2806:32b::/32 | 4.3B × /64 | LACNIC | MX | 22nd Apr 2019 |
| 2806:331::/32 | 4.3B × /64 | LACNIC | MX | 10th Apr 2019 |
| 2806:336::/32 | 4.3B × /64 | LACNIC | MX | 28th May 2019 |
| 2806:339::/32 | 4.3B × /64 | LACNIC | MX | 24th Jul 2019 |
| 2806:33d::/32 | 4.3B × /64 | LACNIC | MX | 16th May 2019 |
| 2806:33f::/32 | 4.3B × /64 | LACNIC | MX | 5th Jun 2019 |
| 2806:344::/32 | 4.3B × /64 | LACNIC | MX | 19th Jul 2019 |
| 2806:346::/32 | 4.3B × /64 | LACNIC | MX | 19th Jul 2019 |
| 2806:348::/32 | 4.3B × /64 | LACNIC | MX | 20th Sept 2019 |
| 2806:34a::/32 | 4.3B × /64 | LACNIC | MX | 10th Oct 2019 |
| 2806:34c::/32 | 4.3B × /64 | LACNIC | MX | 9th Oct 2019 |
| 2806:34e::/32 | 4.3B × /64 | LACNIC | MX | 30th Oct 2019 |
| 2806:360::/32 | 4.3B × /64 | LACNIC | MX | 13th Jun 2013 |
| 2806:367::/32 | 4.3B × /64 | LACNIC | MX | 11th Dec 2019 |
| 2806:368::/32 | 4.3B × /64 | LACNIC | MX | 11th Dec 2019 |
| 2806:36d::/32 | 4.3B × /64 | LACNIC | MX | 17th Dec 2019 |
| 2806:36e::/32 | 4.3B × /64 | LACNIC | MX | 23rd Dec 2019 |
| 2806:380::/27 | 137B × /64 | LACNIC | MX | 20th Sept 2019 |
| 2806:3a1::/32 | 4.3B × /64 | LACNIC | MX | 15th Jan 2020 |
| 2806:3a2::/32 | 4.3B × /64 | LACNIC | MX | 15th Jan 2020 |
| 2806:3a4::/32 | 4.3B × /64 | LACNIC | MX | 12th Feb 2020 |
| 2806:3a8::/32 | 4.3B × /64 | LACNIC | MX | 17th Feb 2020 |
| 2806:3a9::/32 | 4.3B × /64 | LACNIC | MX | 27th Feb 2020 |
| 2806:3ab::/32 | 4.3B × /64 | LACNIC | MX | 5th Mar 2020 |
| 2806:3ac::/32 | 4.3B × /64 | LACNIC | MX | 19th Mar 2020 |
| 2806:3ad::/32 | 4.3B × /64 | LACNIC | MX | 19th Mar 2020 |
| 2806:3ae::/32 | 4.3B × /64 | LACNIC | MX | 4th Mar 2020 |
| 2806:3af::/32 | 4.3B × /64 | LACNIC | MX | 27th Mar 2020 |
| 2806:3b0::/32 | 4.3B × /64 | LACNIC | MX | 20th Mar 2020 |