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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 unannounced space registered through ARIN, largest first.
Unannounced blocks in United States
26,283 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2602:fd8f::/36 | 268M × /64 | ARIN | 20th Dec 2019 | |
| 2602:fd95::/36 | 268M × /64 | ARIN | 10th Dec 2019 | |
| 2602:fd96::/36 | 268M × /64 | ARIN | 10th Dec 2019 | |
| 2602:fd99::/36 | 268M × /64 | ARIN | 2nd Dec 2019 | |
| 2602:fd9f::/36 | 268M × /64 | ARIN | 29th Oct 2019 | |
| 2602:fda0::/36 | 268M × /64 | ARIN | 29th Oct 2019 | |
| 2602:fda2::/36 | 268M × /64 | ARIN | 16th Oct 2019 | |
| 2602:fda5::/32 | 4.3B × /64 | ARIN | 10th Oct 2019 | |
| 2602:fda6::/36 | 268M × /64 | ARIN | 10th Oct 2019 | |
| 2602:fda8::/36 | 268M × /64 | ARIN | 7th Oct 2019 | |
| 2602:fda9::/36 | 268M × /64 | ARIN | 4th Oct 2019 | |
| 2602:fdb2::/36 | 268M × /64 | ARIN | 9th Sept 2019 | |
| 2602:fdb4::/36 | 268M × /64 | ARIN | 30th Aug 2019 | |
| 2602:fdbd::/36 | 268M × /64 | ARIN | 5th Aug 2019 | |
| 2602:fdc3::/36 | 268M × /64 | ARIN | 11th Jul 2019 | |
| 2602:fdc8::/36 | 268M × /64 | ARIN | 20th Jun 2019 | |
| 2602:fdcc::/36 | 268M × /64 | ARIN | 18th Jun 2019 | |
| 2602:fdcf::/36 | 268M × /64 | ARIN | 6th Jun 2019 | |
| 2602:fdd4::/36 | 268M × /64 | ARIN | 28th May 2019 | |
| 2602:fdd8::/36 | 268M × /64 | ARIN | 22nd May 2019 | |
| 2602:fdd9::/36 | 268M × /64 | ARIN | 20th May 2019 | |
| 2602:fdda::/36 | 268M × /64 | ARIN | 17th May 2019 | |
| 2602:fde6::/36 | 268M × /64 | ARIN | 26th Apr 2019 | |
| 2602:fde7::/36 | 268M × /64 | ARIN | 25th Apr 2019 | |
| 2602:fdea::/36 | 268M × /64 | ARIN | 16th Apr 2019 | |
| 2602:fdec::/36 | 268M × /64 | ARIN | 11th Apr 2019 | |
| 2602:fdf1::/36 | 268M × /64 | ARIN | 1st Apr 2019 | |
| 2602:fdf4::/36 | 268M × /64 | ARIN | 27th Mar 2019 | |
| 2602:fdf6::/36 | 268M × /64 | ARIN | 22nd Mar 2019 | |
| 2602:fdfd::/36 | 268M × /64 | ARIN | 26th Feb 2019 | |
| 2602:fe00::/36 | 268M × /64 | ARIN | 20th Feb 2019 | |
| 2602:fe01::/36 | 268M × /64 | ARIN | 15th Feb 2019 | |
| 2602:fe03::/36 | 268M × /64 | ARIN | 12th Feb 2019 | |
| 2602:fe07::/36 | 268M × /64 | ARIN | 1st Feb 2019 | |
| 2602:fe0a::/36 | 268M × /64 | ARIN | 25th Jan 2019 | |
| 2602:fe0b::/36 | 268M × /64 | ARIN | 24th Jan 2019 | |
| 2602:fe0c::/36 | 268M × /64 | ARIN | 23rd Jan 2019 | |
| 2602:fe0e::/36 | 268M × /64 | ARIN | 17th Jan 2019 | |
| 2602:fe14::/36 | 268M × /64 | ARIN | 8th Jan 2019 | |
| 2602:fe15::/36 | 268M × /64 | ARIN | 4th Jan 2019 | |
| 2602:fe16::/36 | 268M × /64 | ARIN | 3rd Jan 2019 | |
| 2602:fe1d::/36 | 268M × /64 | ARIN | 14th Dec 2018 | |
| 2602:fe1f::/36 | 268M × /64 | ARIN | 10th Dec 2018 | |
| 2602:fe21::/36 | 268M × /64 | ARIN | 28th Nov 2018 | |
| 2602:fe22::/36 | 268M × /64 | ARIN | 26th Nov 2018 | |
| 2602:fe2a::/36 | 268M × /64 | ARIN | 5th Nov 2018 | |
| 2602:fe2b::/36 | 268M × /64 | ARIN | 31st Oct 2018 | |
| 2602:fe2c::/36 | 268M × /64 | ARIN | 30th Oct 2018 | |
| 2602:fe2d::/36 | 268M × /64 | ARIN | 30th Oct 2018 | |
| 2602:fe2f::/36 | 268M × /64 | ARIN | 25th Oct 2018 |