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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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:da00::/48 | 65.5k × /64 | APNIC |  US | 5th Aug 2016 |
| 2001:df3:da80::/48 | 65.5k × /64 | APNIC |  NP | 1st Jun 2020 |
| 2001:df3:dac0::/48 | 65.5k × /64 | APNIC |  ID | 29th May 2024 |
| 2001:df3:db80::/48 | 65.5k × /64 | APNIC |  BD | 2nd Jun 2020 |
| 2001:df3:dc00::/48 | 65.5k × /64 | APNIC | ID | 28th Apr 2015 |
| 2001:df3:dc40::/48 | 65.5k × /64 | APNIC | ID | 30th May 2024 |
| 2001:df3:dc80::/48 | 65.5k × /64 | APNIC | ID | 2nd Jun 2020 |
| 2001:df3:dd00::/48 | 65.5k × /64 | APNIC |  AU | 16th Jan 2018 |
| 2001:df3:dd40::/48 | 65.5k × /64 | APNIC | ID | 30th May 2024 |
| 2001:df3:dd80::/48 | 65.5k × /64 | APNIC | ID | 2nd Jun 2020 |
| 2001:df3:ddc0::/48 | 65.5k × /64 | APNIC |  PK | 30th May 2024 |
| 2001:df3:de00::/48 | 65.5k × /64 | APNIC | AU | 8th Aug 2016 |
| 2001:df3:de40::/48 | 65.5k × /64 | APNIC |  LA | 31st May 2024 |
| 2001:df3:de80::/48 | 65.5k × /64 | APNIC | ID | 2nd Jun 2020 |
| 2001:df3:df00::/48 | 65.5k × /64 | APNIC | ID | 16th Jan 2018 |
| 2001:df3:df80::/48 | 65.5k × /64 | APNIC | ID | 2nd Jun 2020 |
| 2001:df3:dfc0::/48 | 65.5k × /64 | APNIC | ID | 3rd Jun 2024 |
| 2001:df3:e100::/48 | 65.5k × /64 | APNIC |  VN | 16th Jan 2018 |
| 2001:df3:e140::/48 | 65.5k × /64 | APNIC | AU | 4th Jun 2024 |
| 2001:df3:e180::/48 | 65.5k × /64 | APNIC |  BT | 4th Jun 2020 |
| 2001:df3:e1c0::/48 | 65.5k × /64 | APNIC | BD | 4th Jun 2024 |
| 2001:df3:e200::/48 | 65.5k × /64 | APNIC | ID | 8th Aug 2016 |
| 2001:df3:e240::/48 | 65.5k × /64 | APNIC | VN | 4th Jun 2024 |
| 2001:df3:e2c0::/48 | 65.5k × /64 | APNIC | VN | 4th Jun 2024 |
| 2001:df3:e300::/48 | 65.5k × /64 | APNIC | BD | 17th Jan 2018 |
| 2001:df3:e340::/48 | 65.5k × /64 | APNIC |  IN | 4th Jun 2024 |
| 2001:df3:e3c0::/48 | 65.5k × /64 | APNIC | VN | 5th Jun 2024 |
| 2001:df3:e40::/48 | 65.5k × /64 | APNIC | VN | 21st Oct 2023 |
| 2001:df3:e440::/48 | 65.5k × /64 | APNIC | ID | 6th Jun 2024 |
| 2001:df3:e501::/48 | 65.5k × /64 | APNIC | VN | 27th Aug 2026 |
| 2001:df3:e540::/48 | 65.5k × /64 | APNIC | ID | 7th Jun 2024 |
| 2001:df3:e580::/48 | 65.5k × /64 | APNIC | AU | 5th Jun 2020 |
| 2001:df3:e640::/48 | 65.5k × /64 | APNIC | VN | 8th Jun 2024 |
| 2001:df3:e6c0::/48 | 65.5k × /64 | APNIC | VN | 10th Jun 2024 |
| 2001:df3:e700::/48 | 65.5k × /64 | APNIC | ID | 17th Jan 2018 |
| 2001:df3:e740::/48 | 65.5k × /64 | APNIC | IN | 10th Jun 2024 |
| 2001:df3:e780::/48 | 65.5k × /64 | APNIC | AU | 8th Jun 2020 |
| 2001:df3:e7c0::/48 | 65.5k × /64 | APNIC |  PH | 10th Jun 2024 |
| 2001:df3:e800::/48 | 65.5k × /64 | APNIC | IN | 17th Mar 2014 |
| 2001:df3:e80::/48 | 65.5k × /64 | APNIC | ID | 5th Mar 2020 |
| 2001:df3:e840::/48 | 65.5k × /64 | APNIC | IN | 10th Jun 2024 |
| 2001:df3:e880::/48 | 65.5k × /64 | APNIC | ID | 8th Jun 2020 |
| 2001:df3:e900::/48 | 65.5k × /64 | APNIC | ID | 17th Jan 2018 |
| 2001:df3:e940::/48 | 65.5k × /64 | APNIC | VN | 10th Jun 2024 |
| 2001:df3:e980::/48 | 65.5k × /64 | APNIC | ID | 8th Jun 2020 |
| 2001:df3:e9c0::/48 | 65.5k × /64 | APNIC | VN | 10th Jun 2024 |
| 2001:df3:ea00::/48 | 65.5k × /64 | APNIC |  MV | 9th Aug 2016 |
| 2001:df3:ea40::/48 | 65.5k × /64 | APNIC | VN | 10th Jun 2024 |
| 2001:df3:ea80::/48 | 65.5k × /64 | APNIC | BD | 8th Jun 2020 |
| 2001:df3:eac0::/48 | 65.5k × /64 | APNIC | ID | 11th Jun 2024 |