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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 2620:132:8000::/44 | 1M × /64 | ARIN | 28th Aug 2017 | |
| 2620:132:9000::/36 | 268M × /64 | ARIN | 30th Aug 2017 | |
| 2620:132:a000::/44 | 1M × /64 | ARIN | 6th Sept 2017 | |
| 2620:132:c000::/40 | 16.8M × /64 | ARIN | 7th Sept 2017 | |
| 2620:132:d000::/40 | 16.8M × /64 | ARIN | 8th Sept 2017 | |
| 2620:132:e000::/44 | 1M × /64 | ARIN | 8th Sept 2017 | |
| 2620:133:1000::/44 | 1M × /64 | ARIN | 14th Sept 2017 | |
| 2620:133:3000::/40 | 16.8M × /64 | ARIN | 22nd Sept 2017 | |
| 2620:133:4000::/40 | 16.8M × /64 | ARIN | 28th Sept 2017 | |
| 2620:133:5000::/44 | 1M × /64 | ARIN | 3rd Oct 2017 | |
| 2620:133:6000::/44 | 1M × /64 | ARIN | 3rd Oct 2017 | |
| 2620:133:7000::/40 | 16.8M × /64 | ARIN | 6th Oct 2017 | |
| 2620:133:9000::/44 | 1M × /64 | ARIN | 6th Oct 2017 | |
| 2620:133:a000::/40 | 16.8M × /64 | ARIN | 10th Oct 2017 | |
| 2620:133:b000::/40 | 16.8M × /64 | ARIN | 19th Oct 2017 | |
| 2620:133:c000::/44 | 1M × /64 | ARIN | 20th Oct 2017 | |
| 2620:134:3000::/44 | 1M × /64 | ARIN | 7th Nov 2017 | |
| 2620:134:4000::/44 | 1M × /64 | ARIN | 7th Nov 2017 | |
| 2620:134:5000::/40 | 16.8M × /64 | ARIN | 9th Nov 2017 | |
| 2620:134:7000::/44 | 1M × /64 | ARIN | 13th Nov 2017 | |
| 2620:134:9000::/40 | 16.8M × /64 | ARIN | 22nd Nov 2017 | |
| 2620:134::/44 | 1M × /64 | ARIN | 26th Oct 2017 | |
| 2620:134:d000::/44 | 1M × /64 | ARIN | 11th Dec 2017 | |
| 2620:134:e000::/40 | 16.8M × /64 | ARIN | 14th Dec 2017 | |
| 2620:135:1000::/44 | 1M × /64 | ARIN | 29th Dec 2017 | |
| 2620:135:3000::/44 | 1M × /64 | ARIN | 4th Jan 2018 | |
| 2620:135:8000::/44 | 1M × /64 | ARIN | 16th Jan 2018 | |
| 2620:135:9000::/40 | 16.8M × /64 | ARIN | 23rd Jan 2018 | |
| 2620:135:a000::/40 | 16.8M × /64 | ARIN | 25th Jan 2018 | |
| 2620:135:b000::/40 | 16.8M × /64 | ARIN | 1st Feb 2018 | |
| 2620:135:c000::/44 | 1M × /64 | ARIN | 5th Feb 2018 | |
| 2620:135:d000::/44 | 1M × /64 | ARIN | 8th Feb 2018 | |
| 2620:135:e000::/40 | 16.8M × /64 | ARIN | 12th Feb 2018 | |
| 2620:136:1000::/44 | 1M × /64 | ARIN | 20th Feb 2018 | |
| 2620:136:3000::/40 | 16.8M × /64 | ARIN | 23rd Feb 2018 | |
| 2620:136:5000::/44 | 1M × /64 | ARIN | 26th Feb 2018 | |
| 2620:136:6000::/44 | 1M × /64 | ARIN | 27th Feb 2018 | |
| 2620:136:7000::/40 | 16.8M × /64 | ARIN | 1st Mar 2018 | |
| 2620:136:8000::/40 | 16.8M × /64 | ARIN | 2nd Mar 2018 | |
| 2620:136:9000::/40 | 16.8M × /64 | ARIN | 2nd Mar 2018 | |
| 2620:136::/40 | 16.8M × /64 | ARIN | 13th Feb 2018 | |
| 2620:136:b000::/40 | 16.8M × /64 | ARIN | 9th Mar 2018 | |
| 2620:136:d000::/40 | 16.8M × /64 | ARIN | 15th Mar 2018 | |
| 2620:136:e000::/40 | 16.8M × /64 | ARIN | 20th Mar 2018 | |
| 2620:137:2000::/44 | 1M × /64 | ARIN | 26th Mar 2018 | |
| 2620:137:3000::/40 | 16.8M × /64 | ARIN | 27th Mar 2018 | |
| 2620:137:8000::/44 | 1M × /64 | ARIN | 9th Apr 2018 | |
| 2620:137:9000::/44 | 1M × /64 | ARIN | 11th Apr 2018 | |
| 2620:137:b000::/40 | 16.8M × /64 | ARIN | 17th Apr 2018 | |
| 2620:137:c000::/44 | 1M × /64 | ARIN | 20th Apr 2018 |