subnet.im

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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 unannounced space registered through RIPE NCC, largest first.

Unannounced blocks in United States

559 blocks match, ordered by prefix.

Allocated but unannounced blocks, 51 to 100 of 559
PrefixAddressesRegistryCountryAllocated
185.148.48.0/221kRIPE NCCUS19th Apr 2016
185.154.244.0/221kRIPE NCCUS6th Jun 2016
185.158.244.0/221kRIPE NCCUS8th Jul 2016
185.161.104.0/221kRIPE NCCUS28th Jul 2016
185.164.168.0/221kRIPE NCCUS22nd Aug 2016
185.175.68.0/221kRIPE NCCUS27th Oct 2016
185.178.52.0/221kRIPE NCCUS18th Nov 2016
185.179.204.0/221kRIPE NCCUS30th Nov 2016
185.183.244.0/221kRIPE NCCUS30th Dec 2016
185.2.136.0/221kRIPE NCCUS18th Sept 2012
185.203.192.0/221kRIPE NCCUS15th May 2017
185.205.100.0/221kRIPE NCCUS24th May 2017
185.212.144.0/221kRIPE NCCUS12th Jul 2017
185.215.48.0/221kRIPE NCCUS27th Jul 2017
185.220.140.0/221kRIPE NCCUS13th Sept 2017
185.235.180.0/221kRIPE NCCUS6th Dec 2017
185.242.219.0/24256RIPE NCCUS20th Jan 2020
185.249.221.0/24256RIPE NCCUS15th Mar 2018
185.253.1.0/24256RIPE NCCUS10th Sept 2021
185.253.5.0/24256RIPE NCCUS10th Sept 2021
185.32.192.0/221kRIPE NCCUS8th Aug 2013
185.33.220.0/221kRIPE NCCUS23rd Aug 2013
185.40.24.0/221kRIPE NCCUS11th Nov 2013
185.42.148.0/221kRIPE NCCUS27th May 2019
185.42.204.0/221kRIPE NCCUS11th Dec 2013
185.47.100.0/221kRIPE NCCUS11th Feb 2014
185.56.200.0/221kRIPE NCCUS6th May 2014
185.63.144.0/221kRIPE NCCUS10th Jul 2014
185.69.156.0/221kRIPE NCCUS9th Sept 2014
185.7.174.0/24256RIPE NCCUS9th Jan 2025
185.72.103.0/24256RIPE NCCUS17th Jan 2025
185.75.100.0/221kRIPE NCCUS30th Oct 2014
185.77.224.0/221kRIPE NCCUS4th Jul 2019
185.83.156.0/23512RIPE NCCUS9th Jan 2015
185.83.214.0/24256RIPE NCCUS13th Jan 2015
185.97.88.0/221kRIPE NCCUS22nd Apr 2015
188.210.93.0/24256RIPE NCCUS8th May 2009
188.213.243.0/24256RIPE NCCUS8th May 2009
188.240.83.0/24256RIPE NCCUS23rd Jun 2009
188.241.193.0/24256RIPE NCCUS23rd Jun 2009
188.64.143.0/24256RIPE NCCUS13th Sept 2021
192.76.118.0/23512RIPE NCCUS21st Nov 2014
192.76.171.0/24256RIPE NCCUS12th Nov 2019
192.83.216.0/24256RIPE NCCUS12th Nov 2019
192.94.78.0/24256RIPE NCCUS12th Nov 2019
193.0.129.0/24256RIPE NCCUS12th Nov 2019
193.0.184.0/24256RIPE NCCUS12th Nov 2019
193.0.212.0/24256RIPE NCCUS12th Nov 2019
193.0.249.0/24256RIPE NCCUS15th Aug 2002
193.105.173.0/24256RIPE NCCUS6th Aug 2010