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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 ARIN, largest first.
Unannounced blocks in Canada
3,775 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 198.169.130.0/24 | 256 | ARIN |  CA | 14th Dec 1993 |
| 198.169.131.0/24 | 256 | ARIN | CA | 14th Dec 1993 |
| 198.169.150.0/24 | 256 | ARIN | CA | 14th Dec 1993 |
| 198.169.151.0/24 | 256 | ARIN | CA | 14th Dec 1993 |
| 198.169.154.0/23 | 512 | ARIN | CA | 14th Dec 1993 |
| 198.169.156.0/22 | 1k | ARIN | CA | 14th Dec 1993 |
| 198.169.160.0/21 | 2k | ARIN | CA | 14th Dec 1993 |
| 198.169.170.0/24 | 256 | ARIN | CA | 14th Dec 1993 |
| 198.169.171.0/24 | 256 | ARIN | CA | 14th Dec 1993 |
| 198.169.175.0/24 | 256 | ARIN | CA | 14th Dec 1993 |
| 198.169.176.0/23 | 512 | ARIN | CA | 14th Dec 1993 |
| 198.169.178.0/24 | 256 | ARIN | CA | 14th Dec 1994 |
| 198.169.179.0/24 | 256 | ARIN | CA | 14th Dec 1993 |
| 198.169.181.0/24 | 256 | ARIN | CA | 14th Dec 1993 |
| 198.169.182.0/23 | 512 | ARIN | CA | 14th Dec 1993 |
| 198.169.184.0/24 | 256 | ARIN | CA | 14th Dec 1993 |
| 198.169.185.0/24 | 256 | ARIN | CA | 14th Dec 1993 |
| 198.169.186.0/23 | 512 | ARIN | CA | 14th Dec 1993 |
| 198.169.190.0/23 | 512 | ARIN | CA | 14th Dec 1993 |
| 198.169.192.0/23 | 512 | ARIN | CA | 14th Dec 1993 |
| 198.169.196.0/23 | 512 | ARIN | CA | 14th Dec 1993 |
| 198.169.199.0/24 | 256 | ARIN | CA | 14th Dec 1993 |
| 198.169.200.0/24 | 256 | ARIN | CA | 14th Dec 1993 |
| 198.169.201.0/24 | 256 | ARIN | CA | 14th Dec 1993 |
| 198.169.202.0/23 | 512 | ARIN | CA | 14th Dec 1993 |
| 198.169.210.0/23 | 512 | ARIN | CA | 14th Dec 1993 |
| 198.169.212.0/24 | 256 | ARIN | CA | 14th Dec 1993 |
| 198.169.213.0/24 | 256 | ARIN | CA | 14th Dec 1993 |
| 198.169.214.0/23 | 512 | ARIN | CA | 14th Dec 1993 |
| 198.169.216.0/23 | 512 | ARIN | CA | 14th Dec 1993 |
| 198.169.218.0/24 | 256 | ARIN | CA | 14th Dec 1993 |
| 198.169.219.0/24 | 256 | ARIN | CA | 14th Dec 1993 |
| 198.169.220.0/22 | 1k | ARIN | CA | 14th Dec 1993 |
| 198.169.224.0/22 | 1k | ARIN | CA | 14th Dec 1993 |
| 198.169.228.0/23 | 512 | ARIN | CA | 14th Dec 1993 |
| 198.169.240.0/24 | 256 | ARIN | CA | 14th Dec 1993 |
| 198.169.252.0/24 | 256 | ARIN | CA | 21st Apr 1994 |
| 198.169.253.0/24 | 256 | ARIN | CA | 16th Dec 1993 |
| 198.169.26.0/24 | 256 | ARIN | CA | 11th May 1994 |
| 198.169.27.0/24 | 256 | ARIN | CA | 10th May 1994 |
| 198.169.3.0/24 | 256 | ARIN | CA | 9th Jun 1993 |
| 198.169.60.0/24 | 256 | ARIN | CA | 11th Nov 1993 |
| 198.169.9.0/24 | 256 | ARIN | CA | 3rd Mar 1994 |
| 198.17.140.0/24 | 256 | ARIN | CA | 29th Dec 1992 |
| 198.17.43.0/24 | 256 | ARIN | CA | 11th Dec 1992 |
| 198.17.58.0/24 | 256 | ARIN | CA | 16th Dec 1992 |
| 198.176.232.0/24 | 256 | ARIN | CA | 27th Jun 2024 |
| 198.179.7.0/24 | 256 | ARIN | CA | 15th Aug 2017 |
| 198.183.225.0/24 | 256 | ARIN | CA | 21st Feb 2013 |
| 198.200.28.0/22 | 1k | ARIN | CA | 27th Mar 2020 |