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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 2804:560c::/32 | 4.3B × /64 | LACNIC |  BR | 12th Nov 2018 |
| 2804:5618::/32 | 4.3B × /64 | LACNIC | BR | 13th Nov 2018 |
| 2804:5624::/32 | 4.3B × /64 | LACNIC | BR | 13th Nov 2018 |
| 2804:562c::/32 | 4.3B × /64 | LACNIC | BR | 13th Nov 2018 |
| 2804:5650::/32 | 4.3B × /64 | LACNIC | BR | 14th Nov 2018 |
| 2804:5688::/32 | 4.3B × /64 | LACNIC | BR | 22nd Nov 2018 |
| 2804:56a8::/32 | 4.3B × /64 | LACNIC | BR | 27th Nov 2018 |
| 2804:56c4::/32 | 4.3B × /64 | LACNIC | BR | 28th Nov 2018 |
| 2804:56e4::/32 | 4.3B × /64 | LACNIC | BR | 29th Nov 2018 |
| 2804:56f4::/32 | 4.3B × /64 | LACNIC | BR | 30th Nov 2018 |
| 2804:572c::/32 | 4.3B × /64 | LACNIC | BR | 4th Dec 2018 |
| 2804:5738::/32 | 4.3B × /64 | LACNIC | BR | 5th Dec 2018 |
| 2804:5750::/32 | 4.3B × /64 | LACNIC | BR | 6th Dec 2018 |
| 2804:5754::/32 | 4.3B × /64 | LACNIC | BR | 7th Dec 2018 |
| 2804:5794::/32 | 4.3B × /64 | LACNIC | BR | 13th Dec 2018 |
| 2804:57e8::/32 | 4.3B × /64 | LACNIC | BR | 20th Dec 2018 |
| 2804:57ec::/32 | 4.3B × /64 | LACNIC | BR | 20th Dec 2018 |
| 2804:5810::/32 | 4.3B × /64 | LACNIC | BR | 27th Dec 2018 |
| 2804:583c::/32 | 4.3B × /64 | LACNIC | BR | 3rd Jan 2019 |
| 2804:58a8::/32 | 4.3B × /64 | LACNIC | BR | 17th Jan 2019 |
| 2804:58ac::/32 | 4.3B × /64 | LACNIC | BR | 17th Jan 2019 |
| 2804:58f8::/32 | 4.3B × /64 | LACNIC | BR | 24th Jan 2019 |
| 2804:58fc::/32 | 4.3B × /64 | LACNIC | BR | 28th Jan 2019 |
| 2804:5908::/32 | 4.3B × /64 | LACNIC | BR | 29th Jan 2019 |
| 2804:592c::/32 | 4.3B × /64 | LACNIC | BR | 4th Feb 2019 |
| 2804:5944::/32 | 4.3B × /64 | LACNIC | BR | 5th Feb 2019 |
| 2804:59a8::/32 | 4.3B × /64 | LACNIC | BR | 18th Feb 2019 |
| 2804:59b0::/32 | 4.3B × /64 | LACNIC | BR | 18th Feb 2019 |
| 2804:59b4::/32 | 4.3B × /64 | LACNIC | BR | 19th Feb 2019 |
| 2804:59d0::/32 | 4.3B × /64 | LACNIC | BR | 21st Feb 2019 |
| 2804:5a1c::/32 | 4.3B × /64 | LACNIC | BR | 28th Feb 2019 |
| 2804:5a70::/32 | 4.3B × /64 | LACNIC | BR | 11th Mar 2019 |
| 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 |
| 2804:5c7c::/32 | 4.3B × /64 | LACNIC | BR | 2nd May 2019 |
| 2804:5c90::/32 | 4.3B × /64 | LACNIC | BR | 3rd May 2019 |
| 2804:5cac::/32 | 4.3B × /64 | LACNIC | BR | 3rd May 2019 |
| 2804:5ce0::/32 | 4.3B × /64 | LACNIC | BR | 13th May 2019 |
| 2804:5d38::/32 | 4.3B × /64 | LACNIC | BR | 20th May 2019 |