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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 unannounced space registered through APNIC, largest first.
Unannounced blocks registered through APNIC
22,591 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 45.117.128.0/22 | 1k | APNIC |  IN | 20th May 2015 |
| 45.117.16.0/22 | 1k | APNIC |  JP | 14th May 2015 |
| 45.117.184.0/22 | 1k | APNIC | IN | 20th May 2015 |
| 45.117.20.0/22 | 1k | APNIC |  CN | 14th May 2015 |
| 45.117.216.0/22 | 1k | APNIC | IN | 21st May 2015 |
| 45.117.224.0/22 | 1k | APNIC | IN | 21st May 2015 |
| 45.117.24.0/22 | 1k | APNIC |  AU | 14th May 2015 |
| 45.117.252.0/22 | 1k | APNIC | CN | 22nd May 2015 |
| 45.117.48.0/22 | 1k | APNIC | IN | 15th May 2015 |
| 45.117.56.0/23 | 512 | APNIC |  HK | 22nd Aug 2025 |
| 45.117.88.0/22 | 1k | APNIC |  PK | 18th May 2015 |
| 45.117.92.0/22 | 1k | APNIC | IN | 18th May 2015 |
| 45.118.0.0/21 | 2k | APNIC | IN | 22nd May 2015 |
| 45.118.108.0/22 | 1k | APNIC | IN | 27th May 2015 |
| 45.118.116.0/22 | 1k | APNIC | IN | 27th May 2015 |
| 45.118.12.0/22 | 1k | APNIC | IN | 22nd May 2015 |
| 45.118.120.0/22 | 1k | APNIC | IN | 27th May 2015 |
| 45.118.128.0/22 | 1k | APNIC | IN | 27th May 2015 |
| 45.118.152.0/22 | 1k | APNIC | IN | 28th May 2015 |
| 45.118.168.0/21 | 2k | APNIC | IN | 28th May 2015 |
| 45.118.176.0/22 | 1k | APNIC | IN | 28th May 2015 |
| 45.118.192.0/22 | 1k | APNIC | IN | 29th May 2015 |
| 45.118.196.0/22 | 1k | APNIC | IN | 29th May 2015 |
| 45.118.200.0/22 | 1k | APNIC | IN | 29th May 2015 |
| 45.118.212.0/22 | 1k | APNIC | IN | 29th May 2015 |
| 45.118.220.0/22 | 1k | APNIC | IN | 29th May 2015 |
| 45.118.224.0/22 | 1k | APNIC | IN | 29th May 2015 |
| 45.118.228.0/22 | 1k | APNIC | IN | 30th May 2015 |
| 45.118.232.0/21 | 2k | APNIC | IN | 30th May 2015 |
| 45.118.240.0/22 | 1k | APNIC | IN | 30th May 2015 |
| 45.118.44.0/22 | 1k | APNIC | IN | 25th May 2015 |
| 45.118.56.0/22 | 1k | APNIC | IN | 25th May 2015 |
| 45.118.80.0/21 | 2k | APNIC | IN | 26th May 2015 |
| 45.118.88.0/22 | 1k | APNIC | IN | 26th May 2015 |
| 45.118.92.0/22 | 1k | APNIC | IN | 26th May 2015 |
| 45.118.96.0/21 | 2k | APNIC | IN | 26th May 2015 |
| 45.119.100.0/22 | 1k | APNIC |  NZ | 4th Jun 2015 |
| 45.119.108.0/22 | 1k | APNIC |  VN | 4th Jun 2015 |
| 45.119.16.0/21 | 2k | APNIC | IN | 2nd Jun 2015 |
| 45.119.168.0/21 | 2k | APNIC | IN | 9th Jun 2015 |
| 45.119.176.0/21 | 2k | APNIC | IN | 9th Jun 2015 |
| 45.119.184.0/22 | 1k | APNIC | IN | 9th Jun 2015 |
| 45.119.188.0/22 | 1k | APNIC | IN | 9th Jun 2015 |
| 45.119.192.0/22 | 1k | APNIC | IN | 9th Jun 2015 |
| 45.119.196.0/22 | 1k | APNIC | IN | 9th Jun 2015 |
| 45.119.224.0/21 | 2k | APNIC | IN | 10th Jun 2015 |
| 45.119.232.0/22 | 1k | APNIC | CN | 10th Jun 2015 |
| 45.119.24.0/22 | 1k | APNIC | IN | 2nd Jun 2015 |
| 45.119.244.0/22 | 1k | APNIC | IN | 10th Jun 2015 |
| 45.119.248.0/22 | 1k | APNIC | IN | 10th Jun 2015 |