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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 the most unannounced blocks, largest first.
Unannounced blocks
84,650 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 89.45.40.0/22 | 1k | RIPE NCC |  MD | 29th Nov 2005 |
| 89.45.76.0/22 | 1k | RIPE NCC |  RO | 29th Nov 2005 |
| 89.45.96.0/20 | 4.1k | RIPE NCC |  ES | 29th Nov 2005 |
| 89.46.116.0/22 | 1k | RIPE NCC |  CH | 29th Nov 2005 |
| 89.46.123.0/24 | 256 | RIPE NCC |  GB | 29th Nov 2005 |
| 89.46.128.0/23 | 512 | RIPE NCC |  TR | 29th Nov 2005 |
| 89.46.130.0/24 | 256 | RIPE NCC | TR | 29th Nov 2005 |
| 89.46.48.0/21 | 2k | RIPE NCC | ES | 29th Nov 2005 |
| 89.46.56.0/22 | 1k | RIPE NCC | ES | 29th Nov 2005 |
| 89.47.1.0/24 | 256 | RIPE NCC |  NL | 29th Nov 2005 |
| 89.47.11.0/24 | 256 | RIPE NCC |  DK | 29th Nov 2005 |
| 89.47.13.0/24 | 256 | RIPE NCC |  US | 29th Nov 2005 |
| 89.47.168.0/23 | 512 | RIPE NCC |  LT | 29th Nov 2005 |
| 89.47.170.0/24 | 256 | RIPE NCC | LT | 29th Nov 2005 |
| 89.47.2.0/24 | 256 | RIPE NCC | US | 29th Nov 2005 |
| 89.47.204.0/22 | 1k | RIPE NCC | ES | 29th Nov 2005 |
| 89.47.244.0/23 | 512 | RIPE NCC | RO | 29th Nov 2005 |
| 89.47.35.0/24 | 256 | RIPE NCC | TR | 29th Nov 2005 |
| 89.47.37.0/24 | 256 | RIPE NCC | LT | 29th Nov 2005 |
| 89.47.42.0/24 | 256 | RIPE NCC | RO | 29th Nov 2005 |
| 89.47.60.0/23 | 512 | RIPE NCC | RO | 29th Nov 2005 |
| 89.47.88.0/24 | 256 | RIPE NCC | RO | 29th Nov 2005 |
| 89.47.91.0/24 | 256 | RIPE NCC | RO | 29th Nov 2005 |
| 89.48.0.0/13 | 524k | ARIN | US | 4th Dec 2024 |
| 9.0.0.0/13 | 524k | ARIN | US | 16th Dec 1988 |
| 9.10.0.0/15 | 131k | ARIN | US | 16th Dec 1988 |
| 9.12.0.0/14 | 262k | ARIN | US | 16th Dec 1988 |
| 9.147.0.0/16 | 65.5k | ARIN | US | 16th Dec 1988 |
| 9.148.0.0/16 | 65.5k | RIPE NCC | US | 16th Dec 1988 |
| 9.150.0.0/16 | 65.5k | ARIN | US | 16th Dec 1988 |
| 9.152.0.0/16 | 65.5k | RIPE NCC | US | 16th Dec 1988 |
| 9.153.0.0/16 | 65.5k | RIPE NCC |  AE | 16th Dec 1988 |
| 9.156.0.0/16 | 65.5k | APNIC |  TH | 16th Dec 1988 |
| 9.16.0.0/12 | 1M | ARIN | US | 16th Dec 1988 |
| 9.162.0.0/16 | 65.5k | RIPE NCC |  SA | 16th Dec 1988 |
| 9.171.0.0/16 | 65.5k | RIPE NCC | AE | 16th Dec 1988 |
| 9.172.0.0/16 | 65.5k | ARIN | US | 16th Dec 1988 |
| 9.174.0.0/16 | 65.5k | RIPE NCC | US | 16th Dec 1988 |
| 9.175.0.0/16 | 65.5k | RIPE NCC | US | 16th Dec 1988 |
| 9.178.0.0/16 | 65.5k | RIPE NCC | AE | 16th Dec 1988 |
| 9.180.0.0/14 | 262k | ARIN | US | 16th Dec 1988 |
| 9.184.0.0/16 | 65.5k | ARIN | US | 16th Dec 1988 |
| 9.186.0.0/16 | 65.5k | ARIN | US | 16th Dec 1988 |
| 9.189.0.0/16 | 65.5k | ARIN | US | 16th Dec 1988 |
| 9.194.0.0/16 | 65.5k | ARIN | US | 16th Dec 1988 |
| 9.197.0.0/16 | 65.5k | ARIN | US | 16th Dec 1988 |
| 9.199.0.0/16 | 65.5k | RIPE NCC | AE | 16th Dec 1988 |
| 9.200.0.0/16 | 65.5k | RIPE NCC | US | 16th Dec 1988 |
| 9.201.0.0/16 | 65.5k | ARIN | US | 16th Dec 1988 |
| 9.202.0.0/15 | 131k | ARIN | US | 16th Dec 1988 |