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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 2804:30d0::/32 | 4.3B × /64 | LACNIC |  BR | 17th May 2016 |
| 2804:3138::/32 | 4.3B × /64 | LACNIC | BR | 30th May 2016 |
| 2804:3144::/32 | 4.3B × /64 | LACNIC | BR | 30th May 2016 |
| 2804:314c::/32 | 4.3B × /64 | LACNIC | BR | 30th May 2016 |
| 2804:3150::/32 | 4.3B × /64 | LACNIC | BR | 30th May 2016 |
| 2804:3188::/32 | 4.3B × /64 | LACNIC | BR | 7th Jun 2016 |
| 2804:3194::/32 | 4.3B × /64 | LACNIC | BR | 8th Jun 2016 |
| 2804:3198::/32 | 4.3B × /64 | LACNIC | BR | 8th Jun 2016 |
| 2804:31bc::/32 | 4.3B × /64 | LACNIC | BR | 13th Jun 2016 |
| 2804:31c::/32 | 4.3B × /64 | LACNIC | BR | 17th Dec 2010 |
| 2804:31e0::/32 | 4.3B × /64 | LACNIC | BR | 16th Jun 2016 |
| 2804:3204::/32 | 4.3B × /64 | LACNIC | BR | 21st Jun 2016 |
| 2804:320::/32 | 4.3B × /64 | LACNIC | BR | 20th Dec 2010 |
| 2804:322c::/32 | 4.3B × /64 | LACNIC | BR | 24th Jun 2016 |
| 2804:3254::/32 | 4.3B × /64 | LACNIC | BR | 1st Jul 2016 |
| 2804:325c::/32 | 4.3B × /64 | LACNIC | BR | 5th Jul 2016 |
| 2804:3274::/32 | 4.3B × /64 | LACNIC | BR | 8th Jul 2016 |
| 2804:32b4::/32 | 4.3B × /64 | LACNIC | BR | 14th Jul 2016 |
| 2804:3308::/32 | 4.3B × /64 | LACNIC | BR | 25th Jul 2016 |
| 2804:3328::/32 | 4.3B × /64 | LACNIC | BR | 28th Jul 2016 |
| 2804:3330::/32 | 4.3B × /64 | LACNIC | BR | 29th Jul 2016 |
| 2804:3338::/32 | 4.3B × /64 | LACNIC | BR | 1st Aug 2016 |
| 2804:3354::/32 | 4.3B × /64 | LACNIC | BR | 3rd Aug 2016 |
| 2804:335c::/32 | 4.3B × /64 | LACNIC | BR | 3rd Aug 2016 |
| 2804:33d0::/32 | 4.3B × /64 | LACNIC | BR | 16th Aug 2016 |
| 2804:33f8::/32 | 4.3B × /64 | LACNIC | BR | 17th Aug 2016 |
| 2804:3474::/32 | 4.3B × /64 | LACNIC | BR | 5th Sept 2016 |
| 2804:34a8::/32 | 4.3B × /64 | LACNIC | BR | 9th Sept 2016 |
| 2804:350::/32 | 4.3B × /64 | LACNIC | BR | 28th Dec 2010 |
| 2804:3544::/32 | 4.3B × /64 | LACNIC | BR | 3rd Oct 2016 |
| 2804:355c::/32 | 4.3B × /64 | LACNIC | BR | 7th Oct 2016 |
| 2804:3564::/32 | 4.3B × /64 | LACNIC | BR | 10th Oct 2016 |
| 2804:3570::/32 | 4.3B × /64 | LACNIC | BR | 11th Oct 2016 |
| 2804:3600::/32 | 4.3B × /64 | LACNIC | BR | 25th Oct 2016 |
| 2804:360c::/32 | 4.3B × /64 | LACNIC | BR | 26th Oct 2016 |
| 2804:3618::/32 | 4.3B × /64 | LACNIC | BR | 27th Oct 2016 |
| 2804:3620::/32 | 4.3B × /64 | LACNIC | BR | 28th Oct 2016 |
| 2804:3638::/32 | 4.3B × /64 | LACNIC | BR | 28th Oct 2016 |
| 2804:3658::/32 | 4.3B × /64 | LACNIC | BR | 3rd Nov 2016 |
| 2804:369c::/32 | 4.3B × /64 | LACNIC | BR | 11th Nov 2016 |
| 2804:36ac::/32 | 4.3B × /64 | LACNIC | BR | 16th Nov 2016 |
| 2804:36e0::/32 | 4.3B × /64 | LACNIC | BR | 23rd Nov 2016 |
| 2804:3778::/32 | 4.3B × /64 | LACNIC | BR | 9th Dec 2016 |
| 2804:3794::/32 | 4.3B × /64 | LACNIC | BR | 12th Dec 2016 |
| 2804:37d0::/32 | 4.3B × /64 | LACNIC | BR | 20th Dec 2016 |
| 2804:3804::/32 | 4.3B × /64 | LACNIC | BR | 28th Dec 2016 |
| 2804:3838::/32 | 4.3B × /64 | LACNIC | BR | 4th Jan 2017 |
| 2804:3898::/32 | 4.3B × /64 | LACNIC | BR | 12th Jan 2017 |
| 2804:38f8::/32 | 4.3B × /64 | LACNIC | BR | 18th Jan 2017 |
| 2804:3910::/32 | 4.3B × /64 | LACNIC | BR | 20th Jan 2017 |