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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 2804:9890::/32 | 4.3B × /64 | LACNIC |  BR | 6th Apr 2026 |
| 2804:9894::/32 | 4.3B × /64 | LACNIC | BR | 6th Apr 2026 |
| 2804:98bc::/32 | 4.3B × /64 | LACNIC | BR | 15th Apr 2026 |
| 2804:98c4::/32 | 4.3B × /64 | LACNIC | BR | 15th Apr 2026 |
| 2804:98d4::/32 | 4.3B × /64 | LACNIC | BR | 27th Apr 2026 |
| 2804:98dc::/32 | 4.3B × /64 | LACNIC | BR | 30th Apr 2026 |
| 2804:98e0::/32 | 4.3B × /64 | LACNIC | BR | 30th Apr 2026 |
| 2804:98f8::/32 | 4.3B × /64 | LACNIC | BR | 12th May 2026 |
| 2804:9904::/32 | 4.3B × /64 | LACNIC | BR | 21st May 2026 |
| 2804:990::/32 | 4.3B × /64 | LACNIC | BR | 27th Apr 2012 |
| 2804:990c::/32 | 4.3B × /64 | LACNIC | BR | 25th May 2026 |
| 2804:9928::/32 | 4.3B × /64 | LACNIC | BR | 8th Jun 2026 |
| 2804:9934::/32 | 4.3B × /64 | LACNIC | BR | 11th Jun 2026 |
| 2804:9938::/32 | 4.3B × /64 | LACNIC | BR | 15th Jun 2026 |
| 2804:9960::/32 | 4.3B × /64 | LACNIC | BR | 18th Jun 2026 |
| 2804:9980::/32 | 4.3B × /64 | LACNIC | BR | 29th Jun 2026 |
| 2804:9988::/32 | 4.3B × /64 | LACNIC | BR | 30th Jun 2026 |
| 2804:9998::/32 | 4.3B × /64 | LACNIC | BR | 2nd Jul 2026 |
| 2804:99ac::/32 | 4.3B × /64 | LACNIC | BR | 13th Jul 2026 |
| 2804:99b0::/32 | 4.3B × /64 | LACNIC | BR | 15th Jul 2026 |
| 2804:99b8::/32 | 4.3B × /64 | LACNIC | BR | 20th Jul 2026 |
| 2804:99bc::/32 | 4.3B × /64 | LACNIC | BR | 20th Jul 2026 |
| 2804:99d0::/32 | 4.3B × /64 | LACNIC | BR | 22nd Jul 2026 |
| 2804:99dc::/32 | 4.3B × /64 | LACNIC | BR | 27th Jul 2026 |
| 2804:99fc::/32 | 4.3B × /64 | LACNIC | BR | 4th Aug 2026 |
| 2804:9a08::/32 | 4.3B × /64 | LACNIC | BR | 7th Aug 2026 |
| 2804:9a0::/32 | 4.3B × /64 | LACNIC | BR | 3rd May 2012 |
| 2804:9a0c::/32 | 4.3B × /64 | LACNIC | BR | 7th Aug 2026 |
| 2804:9a18::/32 | 4.3B × /64 | LACNIC | BR | 12th Aug 2026 |
| 2804:9a20::/32 | 4.3B × /64 | LACNIC | BR | 13th Aug 2026 |
| 2804:9a2c::/32 | 4.3B × /64 | LACNIC | BR | 19th Aug 2026 |
| 2804:9a38::/32 | 4.3B × /64 | LACNIC | BR | 20th Aug 2026 |
| 2804:9a40::/32 | 4.3B × /64 | LACNIC | BR | 24th Aug 2026 |
| 2804:9a44::/32 | 4.3B × /64 | LACNIC | BR | 24th Aug 2026 |
| 2804:9a68::/32 | 4.3B × /64 | LACNIC | BR | 2nd Sept 2026 |
| 2804:9a74::/32 | 4.3B × /64 | LACNIC | BR | 10th Sept 2026 |
| 2804:9a7c::/32 | 4.3B × /64 | LACNIC | BR | 11th Sept 2026 |
| 2804:9a84::/32 | 4.3B × /64 | LACNIC | BR | 14th Sept 2026 |
| 2804:9a90::/32 | 4.3B × /64 | LACNIC | BR | 16th Sept 2026 |
| 2804:9a94::/32 | 4.3B × /64 | LACNIC | BR | 16th Sept 2026 |
| 2804:9a9c::/32 | 4.3B × /64 | LACNIC | BR | 21st Sept 2026 |
| 2804:9aa8::/32 | 4.3B × /64 | LACNIC | BR | 24th Sept 2026 |
| 2804:9aac::/32 | 4.3B × /64 | LACNIC | BR | 25th Sept 2026 |
| 2804:9abc::/32 | 4.3B × /64 | LACNIC | BR | 30th Sept 2026 |
| 2804:9ac4::/32 | 4.3B × /64 | LACNIC | BR | 5th Oct 2026 |
| 2804:9acc::/32 | 4.3B × /64 | LACNIC | BR | 7th Oct 2026 |
| 2804:9adc::/32 | 4.3B × /64 | LACNIC | BR | 14th Oct 2026 |
| 2804:9ae0::/32 | 4.3B × /64 | LACNIC | BR | 14th Oct 2026 |
| 2804:9ae4::/32 | 4.3B × /64 | LACNIC | BR | 14th Oct 2026 |
| 2804:9ae8::/32 | 4.3B × /64 | LACNIC | BR | 15th Oct 2026 |