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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
85,221 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2804:4de4::/32 | 4.3B × /64 | LACNIC |  BR | 10th May 2018 |
| 2804:4dfc::/32 | 4.3B × /64 | LACNIC | BR | 14th May 2018 |
| 2804:4e20::/32 | 4.3B × /64 | LACNIC | BR | 18th May 2018 |
| 2804:4e54::/32 | 4.3B × /64 | LACNIC | BR | 23rd May 2018 |
| 2804:4e7c::/32 | 4.3B × /64 | LACNIC | BR | 25th May 2018 |
| 2804:4ea8::/32 | 4.3B × /64 | LACNIC | BR | 30th May 2018 |
| 2804:4edc::/32 | 4.3B × /64 | LACNIC | BR | 5th Jun 2018 |
| 2804:4ee8::/32 | 4.3B × /64 | LACNIC | BR | 7th Jun 2018 |
| 2804:4f04::/32 | 4.3B × /64 | LACNIC | BR | 12th Jun 2018 |
| 2804:4f08::/32 | 4.3B × /64 | LACNIC | BR | 12th Jun 2018 |
| 2804:4f1c::/32 | 4.3B × /64 | LACNIC | BR | 13th Jun 2018 |
| 2804:4f4::/32 | 4.3B × /64 | LACNIC | BR | 1st Jun 2011 |
| 2804:4f8c::/32 | 4.3B × /64 | LACNIC | BR | 27th Jun 2018 |
| 2804:4fdc::/32 | 4.3B × /64 | LACNIC | BR | 10th Jul 2018 |
| 2804:4fe8::/32 | 4.3B × /64 | LACNIC | BR | 16th Jul 2018 |
| 2804:5058::/32 | 4.3B × /64 | LACNIC | BR | 25th Jul 2018 |
| 2804:5084::/32 | 4.3B × /64 | LACNIC | BR | 31st Jul 2018 |
| 2804:50a4::/32 | 4.3B × /64 | LACNIC | BR | 2nd Aug 2018 |
| 2804:50b4::/32 | 4.3B × /64 | LACNIC | BR | 6th Aug 2018 |
| 2804:50b8::/32 | 4.3B × /64 | LACNIC | BR | 7th Aug 2018 |
| 2804:50c4::/32 | 4.3B × /64 | LACNIC | BR | 7th Aug 2018 |
| 2804:510::/32 | 4.3B × /64 | LACNIC | BR | 6th Jun 2011 |
| 2804:512c::/32 | 4.3B × /64 | LACNIC | BR | 13th Aug 2018 |
| 2804:5134::/32 | 4.3B × /64 | LACNIC | BR | 13th Aug 2018 |
| 2804:5150::/32 | 4.3B × /64 | LACNIC | BR | 15th Aug 2018 |
| 2804:5158::/32 | 4.3B × /64 | LACNIC | BR | 16th Aug 2018 |
| 2804:516c::/32 | 4.3B × /64 | LACNIC | BR | 16th Aug 2018 |
| 2804:5190::/32 | 4.3B × /64 | LACNIC | BR | 20th Aug 2018 |
| 2804:51ac::/32 | 4.3B × /64 | LACNIC | BR | 22nd Aug 2018 |
| 2804:51fc::/32 | 4.3B × /64 | LACNIC | BR | 28th Aug 2018 |
| 2804:5224::/32 | 4.3B × /64 | LACNIC | BR | 29th Aug 2018 |
| 2804:5254::/32 | 4.3B × /64 | LACNIC | BR | 6th Sept 2018 |
| 2804:5264::/32 | 4.3B × /64 | LACNIC | BR | 10th Sept 2018 |
| 2804:52c0::/32 | 4.3B × /64 | LACNIC | BR | 17th Sept 2018 |
| 2804:52e8::/32 | 4.3B × /64 | LACNIC | BR | 21st Sept 2018 |
| 2804:5314::/32 | 4.3B × /64 | LACNIC | BR | 1st Oct 2018 |
| 2804:5360::/32 | 4.3B × /64 | LACNIC | BR | 2nd Oct 2018 |
| 2804:53a0::/32 | 4.3B × /64 | LACNIC | BR | 8th Oct 2018 |
| 2804:53c::/32 | 4.3B × /64 | LACNIC | BR | 20th Jun 2011 |
| 2804:5430::/32 | 4.3B × /64 | LACNIC | BR | 15th Oct 2018 |
| 2804:54ac::/32 | 4.3B × /64 | LACNIC | BR | 23rd Oct 2018 |
| 2804:54f8::/32 | 4.3B × /64 | LACNIC | BR | 29th Oct 2018 |
| 2804:5508::/32 | 4.3B × /64 | LACNIC | BR | 30th Oct 2018 |
| 2804:5544::/32 | 4.3B × /64 | LACNIC | BR | 1st Nov 2018 |
| 2804:5580::/32 | 4.3B × /64 | LACNIC | BR | 6th Nov 2018 |
| 2804:559c::/32 | 4.3B × /64 | LACNIC | BR | 6th Nov 2018 |
| 2804:55ac::/32 | 4.3B × /64 | LACNIC | BR | 6th Nov 2018 |
| 2804:55c0::/32 | 4.3B × /64 | LACNIC | BR | 7th Nov 2018 |
| 2804:55d8::/32 | 4.3B × /64 | LACNIC | BR | 9th Nov 2018 |
| 2804:55f0::/32 | 4.3B × /64 | LACNIC | BR | 9th Nov 2018 |