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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 2804:5a9c::/32 | 4.3B × /64 | LACNIC |  BR | 15th Mar 2019 |
| 2804:5ad8::/32 | 4.3B × /64 | LACNIC | BR | 20th Mar 2019 |
| 2804:5adc::/32 | 4.3B × /64 | LACNIC | BR | 20th Mar 2019 |
| 2804:5b2c::/32 | 4.3B × /64 | LACNIC | BR | 26th Mar 2019 |
| 2804:5b4::/32 | 4.3B × /64 | LACNIC | BR | 14th Jul 2011 |
| 2804:5bb0::/32 | 4.3B × /64 | LACNIC | BR | 11th Apr 2019 |
| 2804:5bf0::/32 | 4.3B × /64 | LACNIC | BR | 18th Apr 2019 |
| 2804:5bfc::/32 | 4.3B × /64 | LACNIC | BR | 18th Apr 2019 |
| 2804:5c2c::/32 | 4.3B × /64 | LACNIC | BR | 24th Apr 2019 |
| 2804:5c3c::/32 | 4.3B × /64 | LACNIC | BR | 25th Apr 2019 |
| 2804:5c6c::/32 | 4.3B × /64 | LACNIC | BR | 30th Apr 2019 |
| 2804:5c70::/32 | 4.3B × /64 | LACNIC | BR | 30th Apr 2019 |
| 2804:5c74::/32 | 4.3B × /64 | LACNIC | BR | 30th Apr 2019 |
| 2804:5c90::/32 | 4.3B × /64 | LACNIC | BR | 3rd May 2019 |
| 2804:5ce0::/32 | 4.3B × /64 | LACNIC | BR | 13th May 2019 |
| 2804:5d58::/32 | 4.3B × /64 | LACNIC | BR | 22nd May 2019 |
| 2804:5d6c::/32 | 4.3B × /64 | LACNIC | BR | 22nd May 2019 |
| 2804:5d7c::/32 | 4.3B × /64 | LACNIC | BR | 23rd May 2019 |
| 2804:5d8c::/32 | 4.3B × /64 | LACNIC | BR | 24th May 2019 |
| 2804:5d94::/32 | 4.3B × /64 | LACNIC | BR | 24th May 2019 |
| 2804:5dec::/32 | 4.3B × /64 | LACNIC | BR | 31st May 2019 |
| 2804:5e00::/32 | 4.3B × /64 | LACNIC | BR | 4th Jun 2019 |
| 2804:5e04::/32 | 4.3B × /64 | LACNIC | BR | 5th Jun 2019 |
| 2804:5e18::/32 | 4.3B × /64 | LACNIC | BR | 6th Jun 2019 |
| 2804:5e58::/32 | 4.3B × /64 | LACNIC | BR | 11th Jun 2019 |
| 2804:5e80::/32 | 4.3B × /64 | LACNIC | BR | 13th Jun 2019 |
| 2804:5e8c::/32 | 4.3B × /64 | LACNIC | BR | 13th Jun 2019 |
| 2804:5e94::/32 | 4.3B × /64 | LACNIC | BR | 13th Jun 2019 |
| 2804:5ec4::/32 | 4.3B × /64 | LACNIC | BR | 17th Jun 2019 |
| 2804:5f0::/32 | 4.3B × /64 | LACNIC | BR | 11th Aug 2011 |
| 2804:5f20::/32 | 4.3B × /64 | LACNIC | BR | 24th Jun 2019 |
| 2804:5f78::/32 | 4.3B × /64 | LACNIC | BR | 1st Jul 2019 |
| 2804:5fa0::/32 | 4.3B × /64 | LACNIC | BR | 3rd Jul 2019 |
| 2804:5fa4::/32 | 4.3B × /64 | LACNIC | BR | 3rd Jul 2019 |
| 2804:5fd0::/32 | 4.3B × /64 | LACNIC | BR | 5th Jul 2019 |
| 2804:60c4::/32 | 4.3B × /64 | LACNIC | BR | 31st Jul 2019 |
| 2804:60f8::/32 | 4.3B × /64 | LACNIC | BR | 7th Aug 2019 |
| 2804:6108::/32 | 4.3B × /64 | LACNIC | BR | 8th Aug 2019 |
| 2804:6110::/32 | 4.3B × /64 | LACNIC | BR | 9th Aug 2019 |
| 2804:6120::/32 | 4.3B × /64 | LACNIC | BR | 12th Aug 2019 |
| 2804:615c::/32 | 4.3B × /64 | LACNIC | BR | 14th Aug 2019 |
| 2804:618c::/32 | 4.3B × /64 | LACNIC | BR | 19th Aug 2019 |
| 2804:6198::/32 | 4.3B × /64 | LACNIC | BR | 19th Aug 2019 |
| 2804:6204::/32 | 4.3B × /64 | LACNIC | BR | 27th Aug 2019 |
| 2804:628c::/32 | 4.3B × /64 | LACNIC | BR | 4th Sept 2019 |
| 2804:62c8::/32 | 4.3B × /64 | LACNIC | BR | 9th Sept 2019 |
| 2804:62e0::/32 | 4.3B × /64 | LACNIC | BR | 10th Sept 2019 |
| 2804:6328::/32 | 4.3B × /64 | LACNIC | BR | 17th Sept 2019 |
| 2804:634::/32 | 4.3B × /64 | LACNIC | BR | 26th Aug 2011 |
| 2804:6360::/32 | 4.3B × /64 | LACNIC | BR | 19th Sept 2019 |