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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
85,248 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2620:120:d000::/44 | 1M × /64 | ARIN | 24th Jun 2015 | |
| 2620:121:1000::/44 | 1M × /64 | ARIN | 30th Jun 2015 | |
| 2620:121:2000::/44 | 1M × /64 | ARIN | 1st Jul 2015 | |
| 2620:121:3000::/40 | 16.8M × /64 | ARIN | 8th Jul 2015 | |
| 2620:121:4000::/40 | 16.8M × /64 | ARIN | 14th Jul 2015 | |
| 2620:121:8000::/44 | 1M × /64 | ARIN | 23rd Jul 2015 | |
| 2620:121:b000::/40 | 16.8M × /64 | ARIN | 27th Jul 2015 | |
| 2620:121:c000::/40 | 16.8M × /64 | ARIN | 27th Jul 2015 | |
| 2620:121:e000::/44 | 1M × /64 | ARIN | 30th Jul 2015 | |
| 2620:121:f000::/44 | 1M × /64 | ARIN | 5th Aug 2015 | |
| 2620:122:1000::/40 | 16.8M × /64 | ARIN | 19th Aug 2015 | |
| 2620:122:3000::/40 | 16.8M × /64 | ARIN | 26th Aug 2015 | |
| 2620:122:7000::/40 | 16.8M × /64 | ARIN | 2nd Sept 2015 | |
| 2620:122:8000::/44 | 1M × /64 | ARIN | 17th Sept 2015 | |
| 2620:122:9000::/44 | 1M × /64 | ARIN | 22nd Sept 2015 | |
| 2620:122:b000::/44 | 1M × /64 | ARIN | 28th Sept 2015 | |
| 2620:122:c000::/40 | 16.8M × /64 | ARIN | 1st Oct 2015 | |
| 2620:122:d000::/40 | 16.8M × /64 | ARIN | 5th Oct 2015 | |
| 2620:122:e000::/44 | 1M × /64 | ARIN | 5th Oct 2015 | |
| 2620:123:1000::/40 | 16.8M × /64 | ARIN | 7th Oct 2015 | |
| 2620:123:6000::/44 | 1M × /64 | ARIN | 28th Oct 2015 | |
| 2620:123:8000::/44 | 1M × /64 | ARIN | 2nd Nov 2015 | |
| 2620:123::/44 | 1M × /64 | ARIN | 7th Oct 2015 | |
| 2620:123:a000::/44 | 1M × /64 | ARIN | 5th Nov 2015 | |
| 2620:123:e000::/40 | 16.8M × /64 | ARIN | 1st Dec 2015 | |
| 2620:124:2000::/44 | 1M × /64 | ARIN | 9th Dec 2015 | |
| 2620:124:4000::/44 | 1M × /64 | ARIN | 9th Dec 2015 | |
| 2620:124:6000::/40 | 16.8M × /64 | ARIN | 11th Dec 2015 | |
| 2620:124:7000::/44 | 1M × /64 | ARIN | 11th Dec 2015 | |
| 2620:124:8000::/44 | 1M × /64 | ARIN | 16th Dec 2015 | |
| 2620:124::/44 | 1M × /64 | ARIN | 3rd Dec 2015 | |
| 2620:124:a000::/44 | 1M × /64 | ARIN | 23rd Dec 2015 | |
| 2620:124:d000::/40 | 16.8M × /64 | ARIN | 4th Jan 2016 | |
| 2620:124:e000::/40 | 16.8M × /64 | ARIN | 5th Jan 2016 | |
| 2620:124:f000::/44 | 1M × /64 | ARIN | 7th Jan 2016 | |
| 2620:125:1000::/44 | 1M × /64 | ARIN | 11th Jan 2016 | |
| 2620:125:2000::/44 | 1M × /64 | ARIN | 11th Jan 2016 | |
| 2620:125:3000::/40 | 16.8M × /64 | ARIN | 14th Jan 2016 | |
| 2620:125:5000::/44 | 1M × /64 | ARIN | 27th Jan 2016 | |
| 2620:125:6000::/44 | 1M × /64 | ARIN | 3rd Feb 2016 | |
| 2620:125:7000::/40 | 16.8M × /64 | ARIN | 3rd Feb 2016 | |
| 2620:125:8000::/44 | 1M × /64 | ARIN | 4th Feb 2016 | |
| 2620:125::/40 | 16.8M × /64 | ARIN | 8th Jan 2016 | |
| 2620:125:a000::/44 | 1M × /64 | ARIN | 29th Feb 2016 | |
| 2620:125:d000::/40 | 16.8M × /64 | ARIN | 9th Mar 2016 | |
| 2620:125:e000::/40 | 16.8M × /64 | ARIN | 17th Mar 2016 | |
| 2620:126:1000::/44 | 1M × /64 | ARIN | 18th Mar 2016 | |
| 2620:126:3000::/40 | 16.8M × /64 | ARIN | 21st Mar 2016 | |
| 2620:126:6000::/40 | 16.8M × /64 | ARIN | 28th Mar 2016 | |
| 2620:126:7000::/44 | 1M × /64 | ARIN | 29th Mar 2016 |