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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
22,593 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 103.42.112.0/23 | 512 | APNIC |  TW | 5th Nov 2014 |
| 103.42.114.0/24 | 256 | APNIC |  IN | 6th Nov 2014 |
| 103.42.12.0/23 | 512 | APNIC | IN | 22nd Nov 2022 |
| 103.42.190.0/24 | 256 | APNIC |  NZ | 11th Nov 2014 |
| 103.42.230.0/23 | 512 | APNIC |  GB | 28th Nov 2022 |
| 103.42.232.0/22 | 1k | APNIC |  CN | 13th Nov 2014 |
| 103.42.24.0/22 | 1k | APNIC | CN | 28th Oct 2014 |
| 103.42.244.0/23 | 512 | APNIC |  ID | 4th Sept 2023 |
| 103.42.32.0/22 | 1k | APNIC | CN | 29th Oct 2014 |
| 103.42.44.0/22 | 1k | APNIC |  JP | 30th Oct 2014 |
| 103.42.64.0/22 | 1k | APNIC | CN | 31st Oct 2014 |
| 103.42.68.0/22 | 1k | APNIC | CN | 31st Oct 2014 |
| 103.42.8.0/22 | 1k | APNIC | CN | 28th Oct 2014 |
| 103.43.100.0/22 | 1k | APNIC | CN | 20th Nov 2014 |
| 103.43.104.0/22 | 1k | APNIC | CN | 20th Nov 2014 |
| 103.43.124.0/22 | 1k | APNIC | CN | 21st Nov 2014 |
| 103.43.137.0/24 | 256 | APNIC |  AU | 24th Nov 2014 |
| 103.43.177.0/24 | 256 | APNIC | AU | 26th Nov 2014 |
| 103.43.192.0/22 | 1k | APNIC | CN | 25th Nov 2014 |
| 103.43.196.0/22 | 1k | APNIC | CN | 25th Nov 2014 |
| 103.43.200.0/22 | 1k | APNIC | IN | 25th Nov 2014 |
| 103.43.208.0/22 | 1k | APNIC | CN | 26th Nov 2014 |
| 103.43.216.0/22 | 1k | APNIC |  HK | 26th Nov 2014 |
| 103.43.220.0/22 | 1k | APNIC | CN | 26th Nov 2014 |
| 103.43.224.0/22 | 1k | APNIC | CN | 26th Nov 2014 |
| 103.43.24.0/23 | 512 | APNIC | ID | 28th Nov 2022 |
| 103.43.26.0/23 | 512 | APNIC | ID | 28th Nov 2022 |
| 103.43.4.0/22 | 1k | APNIC | IN | 14th Nov 2014 |
| 103.43.66.0/23 | 512 | APNIC | ID | 20th Nov 2014 |
| 103.43.96.0/22 | 1k | APNIC | CN | 20th Nov 2014 |
| 103.44.101.0/24 | 256 | APNIC | AU | 5th Dec 2014 |
| 103.44.108.0/24 | 256 | APNIC |  MY | 5th Dec 2014 |
| 103.44.112.0/22 | 1k | APNIC |  SG | 5th Dec 2014 |
| 103.44.120.0/22 | 1k | APNIC | CN | 8th Dec 2014 |
| 103.44.124.0/22 | 1k | APNIC | CN | 8th Dec 2014 |
| 103.44.176.0/22 | 1k | APNIC | CN | 10th Dec 2014 |
| 103.44.180.0/22 | 1k | APNIC | CN | 10th Dec 2014 |
| 103.44.184.0/22 | 1k | APNIC | CN | 10th Dec 2014 |
| 103.44.188.0/22 | 1k | APNIC | CN | 10th Dec 2014 |
| 103.44.192.0/22 | 1k | APNIC | CN | 10th Dec 2014 |
| 103.44.200.0/21 | 2k | APNIC | CN | 10th Dec 2014 |
| 103.44.221.0/24 | 256 | APNIC | IN | 15th Dec 2014 |
| 103.44.222.0/24 | 256 | APNIC | NZ | 16th Dec 2014 |
| 103.44.224.0/22 | 1k | APNIC | CN | 11th Dec 2014 |
| 103.44.228.0/22 | 1k | APNIC | AU | 11th Dec 2014 |
| 103.44.4.0/22 | 1k | APNIC | SG | 29th Nov 2014 |
| 103.45.0.0/22 | 1k | APNIC | CN | 12th Dec 2014 |
| 103.45.100.0/22 | 1k | APNIC | CN | 14th Dec 2014 |
| 103.45.104.0/22 | 1k | APNIC | CN | 14th Dec 2014 |
| 103.45.108.0/22 | 1k | APNIC | CN | 14th Dec 2014 |