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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 RIPE NCC, largest first.
Unannounced blocks registered through RIPE NCC
25,174 blocks match, ordered by prefix.
| Prefix | Addresses | Registry | Country | Allocated |
|---|---|---|---|---|
| 103.103.84.0/22 | 1k | RIPE NCC |  SE | 2nd Nov 2017 |
| 103.105.148.0/22 | 1k | RIPE NCC |  JE | 11th Jul 2017 |
| 103.105.48.0/22 | 1k | RIPE NCC |  GB | 5th Dec 2017 |
| 103.111.71.0/24 | 256 | RIPE NCC |  IR | 14th Mar 2018 |
| 103.13.218.0/24 | 256 | RIPE NCC |  BE | 2nd Aug 2012 |
| 103.14.1.0/24 | 256 | RIPE NCC |  TR | 21st May 2012 |
| 103.145.40.0/23 | 512 | RIPE NCC |  HK | 9th Nov 2019 |
| 103.145.80.0/23 | 512 | RIPE NCC | HK | 15th Nov 2019 |
| 103.148.172.0/23 | 512 | RIPE NCC |  SA | 18th Feb 2020 |
| 103.193.165.0/24 | 256 | RIPE NCC |  UA | 31st Jul 2015 |
| 103.209.164.0/22 | 1k | RIPE NCC | GB | 19th Feb 2016 |
| 103.212.82.0/24 | 256 | RIPE NCC |  NL | 29th Mar 2016 |
| 103.214.180.0/22 | 1k | RIPE NCC |  DE | 13th Apr 2016 |
| 103.229.170.0/23 | 512 | RIPE NCC |  ES | 16th Apr 2014 |
| 103.232.44.0/22 | 1k | RIPE NCC | NL | 26th May 2014 |
| 103.237.44.0/22 | 1k | RIPE NCC |  LV | 10th Jul 2014 |
| 103.244.146.0/23 | 512 | RIPE NCC |  PL | 18th Dec 2012 |
| 103.35.188.0/22 | 1k | RIPE NCC |  MD | 24th Aug 2015 |
| 103.5.188.0/22 | 1k | RIPE NCC |  US | 28th Sept 2011 |
| 103.50.14.0/23 | 512 | RIPE NCC |  FR | 11th Feb 2015 |
| 103.72.184.0/22 | 1k | RIPE NCC |  SI | 19th Aug 2016 |
| 103.75.36.0/22 | 1k | RIPE NCC | NL | 15th Sept 2016 |
| 103.76.166.0/23 | 512 | RIPE NCC | SA | 6th Oct 2016 |
| 103.82.160.0/22 | 1k | RIPE NCC |  AT | 29th Dec 2016 |
| 103.94.60.0/22 | 1k | RIPE NCC | SE | 1st Jun 2017 |
| 104.167.17.0/24 | 256 | RIPE NCC | DE | 22nd Aug 2014 |
| 104.238.201.0/24 | 256 | RIPE NCC |  TJ | 8th Aug 2019 |
| 104.243.216.0/22 | 1k | RIPE NCC | NL | 21st Nov 2014 |
| 107.150.162.0/23 | 512 | RIPE NCC |  GE | 17th Dec 2013 |
| 107.150.170.0/24 | 256 | RIPE NCC | NL | 17th Dec 2013 |
| 107.150.171.0/24 | 256 | RIPE NCC | GE | 17th Dec 2013 |
| 107.150.177.0/24 | 256 | RIPE NCC | GE | 17th Dec 2013 |
| 107.191.68.0/24 | 256 | RIPE NCC |  IE | 14th May 2014 |
| 108.60.16.0/20 | 4.1k | RIPE NCC | GB | 29th Nov 2010 |
| 109.104.104.0/24 | 256 | RIPE NCC | TR | 4th Sept 2009 |
| 109.104.157.0/24 | 256 | RIPE NCC |  IN | 4th Sept 2009 |
| 109.104.64.0/19 | 8.2k | RIPE NCC | DE | 27th Aug 2009 |
| 109.104.99.0/24 | 256 | RIPE NCC | DE | 4th Sept 2009 |
| 109.106.20.0/22 | 1k | RIPE NCC |  RU | 12th Oct 2018 |
| 109.106.64.0/19 | 8.2k | RIPE NCC | FR | 22nd Sept 2009 |
| 109.106.8.0/22 | 1k | RIPE NCC |  FI | 12th Oct 2018 |
| 109.107.128.0/24 | 256 | RIPE NCC |  EE | 21st Oct 2021 |
| 109.107.133.0/24 | 256 | RIPE NCC |  CH | 21st Oct 2021 |
| 109.107.134.0/24 | 256 | RIPE NCC | TR | 21st Oct 2021 |
| 109.107.146.0/24 | 256 | RIPE NCC | RU | 21st Oct 2021 |
| 109.107.153.0/24 | 256 | RIPE NCC | NL | 21st Oct 2021 |
| 109.107.156.0/24 | 256 | RIPE NCC | DE | 21st Oct 2021 |
| 109.107.158.0/24 | 256 | RIPE NCC |  CZ | 22nd Oct 2021 |
| 109.120.143.0/24 | 256 | RIPE NCC |  SG | 27th Aug 2009 |
| 109.120.64.0/18 | 16.4k | RIPE NCC |  LU | 27th Aug 2009 |