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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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.
Browse by registry
Browse by country
Countries with the most unannounced blocks, largest first.
Unannounced blocks
85,392 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 2001:df3:eb40::/48 | 65.5k × /64 | APNIC |  ID | 11th Jun 2024 |
| 2001:df3:eb80::/48 | 65.5k × /64 | APNIC |  BD | 9th Jun 2020 |
| 2001:df3:ec0::/48 | 65.5k × /64 | APNIC |  MM | 23rd Oct 2023 |
| 2001:df3:ec40::/48 | 65.5k × /64 | APNIC |  PK | 13th Jun 2024 |
| 2001:df3:ec80::/48 | 65.5k × /64 | APNIC |  MY | 9th Jun 2020 |
| 2001:df3:ee00::/48 | 65.5k × /64 | APNIC |  TH | 10th Aug 2016 |
| 2001:df3:eec0::/48 | 65.5k × /64 | APNIC | BD | 17th Jun 2024 |
| 2001:df3:ef00::/48 | 65.5k × /64 | APNIC |  AU | 19th Jan 2018 |
| 2001:df3:ef40::/48 | 65.5k × /64 | APNIC |  IN | 17th Jun 2024 |
| 2001:df3:ef80::/48 | 65.5k × /64 | APNIC |  CN | 10th Jun 2020 |
| 2001:df3:f000::/48 | 65.5k × /64 | APNIC | ID | 25th Sept 2013 |
| 2001:df3:f00::/48 | 65.5k × /64 | APNIC | MY | 8th Nov 2017 |
| 2001:df3:f040::/48 | 65.5k × /64 | APNIC |  VN | 17th Jun 2024 |
| 2001:df3:f0c0::/48 | 65.5k × /64 | APNIC | VN | 17th Jun 2024 |
| 2001:df3:f100::/48 | 65.5k × /64 | APNIC | ID | 19th Jan 2018 |
| 2001:df3:f140::/48 | 65.5k × /64 | APNIC | VN | 17th Jun 2024 |
| 2001:df3:f180::/48 | 65.5k × /64 | APNIC | ID | 10th Jun 2020 |
| 2001:df3:f1c0::/48 | 65.5k × /64 | APNIC | AU | 17th Jun 2024 |
| 2001:df3:f240::/48 | 65.5k × /64 | APNIC | TH | 18th Jun 2024 |
| 2001:df3:f300::/48 | 65.5k × /64 | APNIC | ID | 22nd Jan 2018 |
| 2001:df3:f340::/48 | 65.5k × /64 | APNIC | ID | 19th Jun 2024 |
| 2001:df3:f3c0::/48 | 65.5k × /64 | APNIC | ID | 19th Jun 2024 |
| 2001:df3:f40::/48 | 65.5k × /64 | APNIC | IN | 23rd Oct 2023 |
| 2001:df3:f480::/48 | 65.5k × /64 | APNIC | ID | 12th Jun 2020 |
| 2001:df3:f500::/48 | 65.5k × /64 | APNIC | IN | 23rd Jan 2018 |
| 2001:df3:f580::/48 | 65.5k × /64 | APNIC | VN | 15th Jun 2020 |
| 2001:df3:f5c0::/48 | 65.5k × /64 | APNIC | IN | 21st Jun 2024 |
| 2001:df3:f600::/48 | 65.5k × /64 | APNIC | VN | 12th Aug 2016 |
| 2001:df3:f680::/48 | 65.5k × /64 | APNIC | ID | 15th Jun 2020 |
| 2001:df3:f740::/48 | 65.5k × /64 | APNIC |  HK | 24th Jun 2024 |
| 2001:df3:f7c0::/48 | 65.5k × /64 | APNIC | MY | 24th Jun 2024 |
| 2001:df3:f880::/48 | 65.5k × /64 | APNIC | TH | 16th Jun 2020 |
| 2001:df3:f940::/48 | 65.5k × /64 | APNIC | BD | 26th Jun 2024 |
| 2001:df3:f9c0::/48 | 65.5k × /64 | APNIC | BD | 26th Jun 2024 |
| 2001:df3:fa40::/48 | 65.5k × /64 | APNIC | BD | 26th Jun 2024 |
| 2001:df3:fb40::/48 | 65.5k × /64 | APNIC | ID | 26th Jun 2024 |
| 2001:df3:fb80::/48 | 65.5k × /64 | APNIC | ID | 18th Jun 2020 |
| 2001:df3:fc0::/48 | 65.5k × /64 | APNIC |  KH | 24th Oct 2023 |
| 2001:df3:fc40::/48 | 65.5k × /64 | APNIC | ID | 27th Jun 2024 |
| 2001:df3:fc80::/48 | 65.5k × /64 | APNIC | ID | 18th Jun 2020 |
| 2001:df3:fcc0::/48 | 65.5k × /64 | APNIC | AU | 27th Jun 2024 |
| 2001:df3:fd00::/48 | 65.5k × /64 | APNIC | AU | 25th Jan 2018 |
| 2001:df3:fd40::/48 | 65.5k × /64 | APNIC | ID | 27th Jun 2024 |
| 2001:df3:fe80::/48 | 65.5k × /64 | APNIC | AU | 19th Jun 2020 |
| 2001:df3:fec0::/48 | 65.5k × /64 | APNIC | MM | 1st Jul 2024 |
| 2001:df3:ff00::/48 | 65.5k × /64 | APNIC | ID | 25th Jan 2018 |
| 2001:df3:ff40::/48 | 65.5k × /64 | APNIC | AU | 1st Jul 2024 |
| 2001:df3:ffc0::/48 | 65.5k × /64 | APNIC | AU | 1st Jul 2024 |
| 2001:df4:100::/48 | 65.5k × /64 | APNIC | VN | 25th Jan 2018 |
| 2001:df4:1080::/48 | 65.5k × /64 | APNIC |  SG | 22nd Jun 2020 |