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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
22,575 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 103.76.246.0/24 | 256 | APNIC |  AU | 12th Oct 2016 |
| 103.76.248.0/22 | 1k | APNIC |  IN | 10th Oct 2016 |
| 103.76.32.0/22 | 1k | APNIC |  HK | 27th Sept 2016 |
| 103.76.36.0/22 | 1k | APNIC |  SG | 27th Sept 2016 |
| 103.76.64.0/22 | 1k | APNIC |  CN | 28th Sept 2016 |
| 103.76.68.0/22 | 1k | APNIC | CN | 28th Sept 2016 |
| 103.76.72.0/22 | 1k | APNIC | CN | 28th Sept 2016 |
| 103.76.92.0/22 | 1k | APNIC | CN | 29th Sept 2016 |
| 103.77.113.0/24 | 256 | APNIC | AU | 19th Oct 2016 |
| 103.77.115.0/24 | 256 | APNIC | AU | 19th Oct 2016 |
| 103.77.148.0/22 | 1k | APNIC | CN | 20th Oct 2016 |
| 103.77.156.0/22 | 1k | APNIC |  ID | 21st Oct 2016 |
| 103.77.200.0/24 | 256 | APNIC | SG | 20th Oct 2022 |
| 103.77.220.0/22 | 1k | APNIC | CN | 26th Oct 2016 |
| 103.77.248.0/22 | 1k | APNIC | ID | 27th Oct 2016 |
| 103.77.36.0/22 | 1k | APNIC | IN | 14th Oct 2016 |
| 103.77.52.0/22 | 1k | APNIC | CN | 17th Oct 2016 |
| 103.77.56.0/22 | 1k | APNIC | CN | 17th Oct 2016 |
| 103.77.6.0/24 | 256 | APNIC | IN | 19th Oct 2022 |
| 103.77.68.0/23 | 512 | APNIC | AU | 17th Oct 2016 |
| 103.77.7.0/24 | 256 | APNIC | AU | 13th Oct 2016 |
| 103.77.88.0/22 | 1k | APNIC | CN | 18th Oct 2016 |
| 103.77.96.0/22 | 1k | APNIC | IN | 18th Oct 2016 |
| 103.78.100.0/23 | 512 | APNIC | ID | 1st Nov 2016 |
| 103.78.104.0/23 | 512 | APNIC | ID | 1st Nov 2016 |
| 103.78.110.0/24 | 256 | APNIC | ID | 2nd Nov 2016 |
| 103.78.144.0/22 | 1k | APNIC | ID | 4th Nov 2016 |
| 103.78.172.0/22 | 1k | APNIC | CN | 7th Nov 2016 |
| 103.78.176.0/22 | 1k | APNIC | CN | 7th Nov 2016 |
| 103.78.196.0/22 | 1k | APNIC | CN | 8th Nov 2016 |
| 103.78.232.0/22 | 1k | APNIC | ID | 9th Nov 2016 |
| 103.78.240.0/24 | 256 | APNIC | ID | 21st Oct 2022 |
| 103.78.4.0/23 | 512 | APNIC |  VN | 12th Sept 2023 |
| 103.78.56.0/22 | 1k | APNIC | CN | 31st Oct 2016 |
| 103.78.64.0/22 | 1k | APNIC | CN | 31st Oct 2016 |
| 103.78.68.0/22 | 1k | APNIC | CN | 31st Oct 2016 |
| 103.78.88.0/22 | 1k | APNIC | VN | 1st Nov 2016 |
| 103.79.110.0/23 | 512 | APNIC |  PH | 17th Nov 2016 |
| 103.79.130.0/23 | 512 | APNIC | ID | 31st Jan 2023 |
| 103.79.136.0/22 | 1k | APNIC | CN | 18th Nov 2016 |
| 103.79.144.0/22 | 1k | APNIC | VN | 18th Nov 2016 |
| 103.79.148.0/22 | 1k | APNIC | SG | 18th Nov 2016 |
| 103.79.158.0/24 | 256 | APNIC | IN | 18th Nov 2016 |
| 103.79.176.0/23 | 512 | APNIC |  JP | 1st May 2023 |
| 103.79.188.0/22 | 1k | APNIC | CN | 21st Nov 2016 |
| 103.79.192.0/22 | 1k | APNIC | CN | 21st Nov 2016 |
| 103.79.196.0/22 | 1k | APNIC | CN | 21st Nov 2016 |
| 103.79.20.0/24 | 256 | APNIC | AU | 11th Nov 2016 |
| 103.79.204.0/22 | 1k | APNIC | CN | 21st Nov 2016 |
| 103.79.208.0/22 | 1k | APNIC | CN | 21st Nov 2016 |