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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 |
|---|---|---|---|---|
| 103.118.88.0/22 | 1k | APNIC |  CN | 10th Jul 2018 |
| 103.119.114.0/24 | 256 | APNIC |  ID | 20th Jul 2018 |
| 103.119.115.0/24 | 256 | APNIC | CN | 20th Jul 2018 |
| 103.119.120.0/22 | 1k | APNIC |  IN | 20th Jul 2018 |
| 103.119.156.0/22 | 1k | APNIC | CN | 24th Jul 2018 |
| 103.119.180.0/22 | 1k | APNIC | CN | 25th Jul 2018 |
| 103.119.200.0/22 | 1k | APNIC | CN | 26th Jul 2018 |
| 103.119.204.0/22 | 1k | APNIC | ID | 26th Jul 2018 |
| 103.119.210.0/24 | 256 | APNIC | IN | 26th Jul 2018 |
| 103.119.222.0/24 | 256 | APNIC |  AU | 27th Jul 2018 |
| 103.119.232.0/22 | 1k | APNIC |  MY | 27th Jul 2018 |
| 103.119.28.0/22 | 1k | APNIC | CN | 17th Jul 2018 |
| 103.119.40.0/22 | 1k | APNIC | ID | 17th Jul 2018 |
| 103.12.124.0/22 | 1k | APNIC | IN | 28th Jun 2012 |
| 103.12.136.0/22 | 1k | APNIC | CN | 11th Jul 2012 |
| 103.12.16.0/22 | 1k | APNIC |  JP | 29th May 2012 |
| 103.12.166.0/24 | 256 | APNIC |  BD | 16th Jul 2012 |
| 103.12.167.0/24 | 256 | APNIC | ID | 17th Jul 2012 |
| 103.12.188.0/22 | 1k | APNIC | AU | 16th Jul 2012 |
| 103.12.22.0/24 | 256 | APNIC | AU | 31st May 2012 |
| 103.12.220.0/22 | 1k | APNIC | ID | 18th Jul 2012 |
| 103.12.23.0/24 | 256 | APNIC | ID | 1st Jun 2012 |
| 103.12.244.0/24 | 256 | APNIC | IN | 28th Jul 2022 |
| 103.12.32.0/22 | 1k | APNIC | CN | 4th Jun 2012 |
| 103.12.82.0/23 | 512 | APNIC | BD | 21st Jun 2012 |
| 103.12.92.0/22 | 1k | APNIC | CN | 29th Oct 2015 |
| 103.120.100.0/22 | 1k | APNIC | CN | 2nd Aug 2018 |
| 103.120.109.0/24 | 256 | APNIC |  HK | 3rd Aug 2018 |
| 103.120.137.0/24 | 256 | APNIC | AU | 6th Aug 2018 |
| 103.120.140.0/22 | 1k | APNIC | CN | 6th Aug 2018 |
| 103.120.144.0/22 | 1k | APNIC | BD | 6th Aug 2018 |
| 103.120.148.0/22 | 1k | APNIC |  TW | 6th Aug 2018 |
| 103.120.156.0/22 | 1k | APNIC |  VN | 7th Aug 2018 |
| 103.120.196.0/22 | 1k | APNIC | CN | 8th Aug 2018 |
| 103.120.219.0/24 | 256 | APNIC | AU | 9th Aug 2018 |
| 103.120.224.0/22 | 1k | APNIC | CN | 9th Aug 2018 |
| 103.120.24.0/22 | 1k | APNIC | HK | 30th Jul 2018 |
| 103.120.247.0/24 | 256 | APNIC |  SG | 13th Aug 2018 |
| 103.120.41.0/24 | 256 | APNIC | SG | 31st Jul 2018 |
| 103.120.52.0/22 | 1k | APNIC | CN | 31st Jul 2018 |
| 103.120.77.0/24 | 256 | APNIC | AU | 2nd Aug 2018 |
| 103.120.78.0/23 | 512 | APNIC | VN | 10th Aug 2022 |
| 103.120.96.0/22 | 1k | APNIC | CN | 1st Aug 2018 |
| 103.121.112.0/23 | 512 | APNIC | IN | 21st Aug 2018 |
| 103.121.160.0/22 | 1k | APNIC | CN | 26th Aug 2018 |
| 103.121.186.0/23 | 512 | APNIC | ID | 28th Mar 2023 |
| 103.121.200.0/22 | 1k | APNIC | ID | 29th Aug 2018 |
| 103.121.251.0/24 | 256 | APNIC | ID | 31st Aug 2018 |
| 103.121.252.0/22 | 1k | APNIC | CN | 31st Aug 2018 |
| 103.121.28.0/22 | 1k | APNIC |  PK | 14th Aug 2018 |