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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
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Countries with the most unannounced blocks, largest first.
Unannounced blocks
84,960 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 103.62.116.0/22 | 1k | APNIC |  CN | 6th Jul 2015 |
| 103.62.12.0/22 | 1k | APNIC |  IN | 2nd Jul 2015 |
| 103.62.120.0/22 | 1k | APNIC | CN | 6th Jul 2015 |
| 103.62.124.0/22 | 1k | APNIC | CN | 6th Jul 2015 |
| 103.62.128.0/22 | 1k | APNIC | CN | 6th Jul 2015 |
| 103.62.132.0/22 | 1k | APNIC | CN | 6th Jul 2015 |
| 103.62.136.0/22 | 1k | APNIC | IN | 6th Jul 2015 |
| 103.62.156.0/22 | 1k | APNIC | CN | 8th Jul 2015 |
| 103.62.160.0/22 | 1k | APNIC | CN | 8th Jul 2015 |
| 103.62.164.0/22 | 1k | APNIC | CN | 8th Jul 2015 |
| 103.62.168.0/22 | 1k | APNIC | CN | 8th Jul 2015 |
| 103.62.172.0/22 | 1k | APNIC | CN | 8th Jul 2015 |
| 103.62.176.0/22 | 1k | APNIC | CN | 8th Jul 2015 |
| 103.62.180.0/22 | 1k | APNIC | CN | 8th Jul 2015 |
| 103.62.184.0/22 | 1k | APNIC | CN | 8th Jul 2015 |
| 103.62.188.0/22 | 1k | APNIC | CN | 8th Jul 2015 |
| 103.62.192.0/22 | 1k | APNIC | CN | 8th Jul 2015 |
| 103.62.196.0/23 | 512 | APNIC |  ID | 8th Jul 2015 |
| 103.62.20.0/22 | 1k | APNIC | IN | 2nd Jul 2015 |
| 103.62.204.0/22 | 1k | APNIC | CN | 8th Jul 2015 |
| 103.62.208.0/22 | 1k | APNIC | CN | 8th Jul 2015 |
| 103.62.212.0/22 | 1k | APNIC | CN | 8th Jul 2015 |
| 103.62.216.0/22 | 1k | APNIC | CN | 8th Jul 2015 |
| 103.62.220.0/22 | 1k | APNIC | CN | 8th Jul 2015 |
| 103.62.224.0/22 | 1k | APNIC | CN | 8th Jul 2015 |
| 103.62.24.0/22 | 1k | APNIC | CN | 2nd Jul 2015 |
| 103.62.244.0/22 | 1k | APNIC |  JP | 9th Jul 2015 |
| 103.62.248.0/21 | 2k | APNIC | IN | 9th Jul 2015 |
| 103.62.36.0/22 | 1k | APNIC |  AU | 3rd Jul 2015 |
| 103.62.44.0/22 | 1k | APNIC |  HK | 6th Jul 2015 |
| 103.62.56.0/22 | 1k | APNIC | IN | 6th Jul 2015 |
| 103.62.60.0/22 | 1k | APNIC | IN | 6th Jul 2015 |
| 103.62.64.0/22 | 1k | APNIC | IN | 6th Jul 2015 |
| 103.62.68.0/22 | 1k | APNIC | IN | 6th Jul 2015 |
| 103.62.72.0/22 | 1k | APNIC | CN | 6th Jul 2015 |
| 103.62.76.0/22 | 1k | APNIC | CN | 6th Jul 2015 |
| 103.62.8.0/22 | 1k | APNIC |  VN | 2nd Jul 2015 |
| 103.62.80.0/22 | 1k | APNIC | CN | 6th Jul 2015 |
| 103.62.84.0/22 | 1k | APNIC | CN | 6th Jul 2015 |
| 103.62.96.0/22 | 1k | APNIC | CN | 6th Jul 2015 |
| 103.63.103.0/24 | 256 | APNIC | AU | 13th Jul 2015 |
| 103.63.12.0/22 | 1k | APNIC | IN | 9th Jul 2015 |
| 103.63.140.0/22 | 1k | APNIC | CN | 13th Jul 2015 |
| 103.63.144.0/22 | 1k | APNIC | CN | 13th Jul 2015 |
| 103.63.152.0/22 | 1k | APNIC | CN | 13th Jul 2015 |
| 103.63.184.0/22 | 1k | APNIC | CN | 13th Jul 2015 |
| 103.63.189.0/24 | 256 | APNIC | AU | 13th Jul 2015 |
| 103.63.191.0/24 | 256 | APNIC | ID | 27th Sept 2022 |
| 103.63.192.0/22 | 1k | APNIC | CN | 13th Jul 2015 |
| 103.63.196.0/22 | 1k | APNIC | CN | 13th Jul 2015 |