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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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
85,108 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 185.87.200.0/22 | 1k | RIPE NCC |  NL | 12th Feb 2015 |
| 185.87.4.0/22 | 1k | RIPE NCC |  BE | 6th Feb 2015 |
| 185.87.62.0/24 | 256 | RIPE NCC |  KZ | 19th Dec 2019 |
| 185.87.63.0/24 | 256 | RIPE NCC |  ES | 19th Dec 2019 |
| 185.87.84.0/22 | 1k | RIPE NCC | ES | 10th Feb 2015 |
| 185.88.11.0/24 | 256 | RIPE NCC |  AE | 6th Jan 2020 |
| 185.88.133.0/24 | 256 | RIPE NCC |  TR | 17th Feb 2015 |
| 185.88.134.0/23 | 512 | RIPE NCC | TR | 17th Feb 2015 |
| 185.88.148.0/22 | 1k | RIPE NCC | NL | 17th Feb 2015 |
| 185.88.172.0/22 | 1k | RIPE NCC | TR | 18th Feb 2015 |
| 185.88.192.0/22 | 1k | RIPE NCC |  GB | 18th Feb 2015 |
| 185.88.216.0/22 | 1k | RIPE NCC | GB | 19th Feb 2015 |
| 185.88.44.0/22 | 1k | RIPE NCC | GB | 16th Feb 2015 |
| 185.88.84.0/22 | 1k | RIPE NCC |  IT | 16th Feb 2015 |
| 185.89.0.0/22 | 1k | RIPE NCC |  NO | 19th Feb 2015 |
| 185.89.100.0/22 | 1k | RIPE NCC |  UA | 24th Feb 2015 |
| 185.89.188.0/22 | 1k | RIPE NCC |  CH | 26th Feb 2015 |
| 185.89.204.0/22 | 1k | RIPE NCC |  SE | 27th Feb 2015 |
| 185.9.108.0/22 | 1k | RIPE NCC |  DE | 8th Nov 2012 |
| 185.9.136.0/24 | 256 | RIPE NCC | GB | 8th Apr 2024 |
| 185.9.137.0/24 | 256 | RIPE NCC | IT | 8th Apr 2024 |
| 185.9.244.0/22 | 1k | RIPE NCC |  LU | 13th Nov 2012 |
| 185.9.48.0/22 | 1k | RIPE NCC | GB | 6th Nov 2012 |
| 185.9.68.0/22 | 1k | RIPE NCC |  IQ | 7th Nov 2012 |
| 185.9.92.0/22 | 1k | RIPE NCC | GB | 7th Nov 2012 |
| 185.9.96.0/22 | 1k | RIPE NCC |  FR | 8th Nov 2012 |
| 185.90.120.0/22 | 1k | RIPE NCC | GB | 5th Mar 2015 |
| 185.90.16.0/22 | 1k | RIPE NCC |  SA | 2nd Mar 2015 |
| 185.90.188.0/22 | 1k | RIPE NCC | IT | 6th Mar 2015 |
| 185.90.24.0/22 | 1k | RIPE NCC | SE | 3rd Mar 2015 |
| 185.90.244.0/22 | 1k | ARIN |  US | 15th Jun 2017 |
| 185.90.252.0/22 | 1k | RIPE NCC | ES | 10th Mar 2015 |
| 185.90.76.0/22 | 1k | RIPE NCC |  IE | 4th Mar 2015 |
| 185.91.112.0/22 | 1k | RIPE NCC | GB | 12th Mar 2015 |
| 185.91.124.0/24 | 256 | RIPE NCC | GB | 22nd May 2023 |
| 185.91.144.0/22 | 1k | RIPE NCC |  AT | 12th Mar 2015 |
| 185.91.60.0/22 | 1k | RIPE NCC | IT | 11th Mar 2015 |
| 185.92.112.0/22 | 1k | RIPE NCC |  FI | 18th Mar 2015 |
| 185.92.16.0/22 | 1k | RIPE NCC | NL | 16th Mar 2015 |
| 185.92.176.0/22 | 1k | RIPE NCC |  SI | 19th Mar 2015 |
| 185.92.20.0/22 | 1k | RIPE NCC | FR | 16th Mar 2015 |
| 185.92.80.0/22 | 1k | RIPE NCC | ES | 17th Mar 2015 |
| 185.92.92.0/22 | 1k | RIPE NCC | NL | 18th Mar 2015 |
| 185.93.112.0/22 | 1k | RIPE NCC | ES | 25th Mar 2015 |
| 185.93.124.0/22 | 1k | RIPE NCC |  UZ | 25th Mar 2015 |
| 185.93.168.0/22 | 1k | RIPE NCC | GB | 26th Mar 2015 |
| 185.93.176.0/22 | 1k | RIPE NCC | IT | 26th Mar 2015 |
| 185.93.212.0/24 | 256 | RIPE NCC | DE | 27th Mar 2015 |
| 185.93.213.0/24 | 256 | RIPE NCC | DE | 27th Mar 2015 |
| 185.93.248.0/24 | 256 | RIPE NCC | TR | 30th Mar 2015 |