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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
84,481 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2804:11c4::/32 | 4.3B × /64 | LACNIC |  BR | 4th Dec 2013 |
| 2804:11f0::/32 | 4.3B × /64 | LACNIC | BR | 9th Dec 2013 |
| 2804:11fc::/32 | 4.3B × /64 | LACNIC | BR | 10th Dec 2013 |
| 2804:1208::/32 | 4.3B × /64 | LACNIC | BR | 10th Dec 2013 |
| 2804:120::/32 | 4.3B × /64 | LACNIC | BR | 8th Mar 2010 |
| 2804:1220::/32 | 4.3B × /64 | LACNIC | BR | 11th Dec 2013 |
| 2804:127c::/32 | 4.3B × /64 | LACNIC | BR | 19th Dec 2013 |
| 2804:1294::/32 | 4.3B × /64 | LACNIC | BR | 20th Dec 2013 |
| 2804:12b4::/32 | 4.3B × /64 | LACNIC | BR | 23rd Dec 2013 |
| 2804:12f8::/32 | 4.3B × /64 | LACNIC | BR | 27th Dec 2013 |
| 2804:1300::/32 | 4.3B × /64 | LACNIC | BR | 30th Dec 2013 |
| 2804:1390::/32 | 4.3B × /64 | LACNIC | BR | 23rd Jan 2014 |
| 2804:13bc::/32 | 4.3B × /64 | LACNIC | BR | 31st Jan 2014 |
| 2804:13e0::/32 | 4.3B × /64 | LACNIC | BR | 11th Feb 2014 |
| 2804:13e8::/32 | 4.3B × /64 | LACNIC | BR | 12th Feb 2014 |
| 2804:13f4::/32 | 4.3B × /64 | LACNIC | BR | 13th Feb 2014 |
| 2804:13fc::/32 | 4.3B × /64 | LACNIC | BR | 18th Feb 2014 |
| 2804:1400::/32 | 4.3B × /64 | LACNIC | BR | 18th Feb 2014 |
| 2804:1404::/32 | 4.3B × /64 | LACNIC | BR | 19th Feb 2014 |
| 2804:1418::/32 | 4.3B × /64 | LACNIC | BR | 20th Feb 2014 |
| 2804:144::/32 | 4.3B × /64 | LACNIC | BR | 19th Apr 2010 |
| 2804:1474::/32 | 4.3B × /64 | LACNIC | BR | 12th Mar 2014 |
| 2804:147c::/32 | 4.3B × /64 | LACNIC | BR | 12th Mar 2014 |
| 2804:1490::/32 | 4.3B × /64 | LACNIC | BR | 13th Mar 2014 |
| 2804:14b0::/32 | 4.3B × /64 | LACNIC | BR | 14th Mar 2014 |
| 2804:14e4::/32 | 4.3B × /64 | LACNIC | BR | 18th Mar 2014 |
| 2804:1514::/32 | 4.3B × /64 | LACNIC | BR | 20th Mar 2014 |
| 2804:156c::/32 | 4.3B × /64 | LACNIC | BR | 26th Mar 2014 |
| 2804:159c::/32 | 4.3B × /64 | LACNIC | BR | 31st Mar 2014 |
| 2804:15b0::/32 | 4.3B × /64 | LACNIC | BR | 1st Apr 2014 |
| 2804:15c0::/32 | 4.3B × /64 | LACNIC | BR | 2nd Apr 2014 |
| 2804:15c4::/32 | 4.3B × /64 | LACNIC | BR | 2nd Apr 2014 |
| 2804:15e8::/32 | 4.3B × /64 | LACNIC | BR | 7th Apr 2014 |
| 2804:15f4::/32 | 4.3B × /64 | LACNIC | BR | 8th Apr 2014 |
| 2804:1628::/32 | 4.3B × /64 | LACNIC | BR | 11th Apr 2014 |
| 2804:1634::/32 | 4.3B × /64 | LACNIC | BR | 14th Apr 2014 |
| 2804:166c::/32 | 4.3B × /64 | LACNIC | BR | 17th Apr 2014 |
| 2804:16b0::/32 | 4.3B × /64 | LACNIC | BR | 29th Apr 2014 |
| 2804:1744::/32 | 4.3B × /64 | LACNIC | BR | 13th May 2014 |
| 2804:1750::/32 | 4.3B × /64 | LACNIC | BR | 14th May 2014 |
| 2804:177c::/32 | 4.3B × /64 | LACNIC | BR | 16th May 2014 |
| 2804:1794::/32 | 4.3B × /64 | LACNIC | BR | 19th May 2014 |
| 2804:17a4::/32 | 4.3B × /64 | LACNIC | BR | 21st May 2014 |
| 2804:17c::/32 | 4.3B × /64 | LACNIC | BR | 11th Jun 2010 |
| 2804:17d0::/32 | 4.3B × /64 | LACNIC | BR | 22nd May 2014 |
| 2804:17d4::/32 | 4.3B × /64 | LACNIC | BR | 22nd May 2014 |
| 2804:17f8::/32 | 4.3B × /64 | LACNIC | BR | 26th May 2014 |
| 2804:18ac::/32 | 4.3B × /64 | LACNIC | BR | 11th Jun 2014 |
| 2804:18b4::/32 | 4.3B × /64 | LACNIC | BR | 13th Jun 2014 |
| 2804:198::/32 | 4.3B × /64 | LACNIC | BR | 21st Jul 2010 |