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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 Czechia

299 blocks match, ordered by prefix.

Allocated but unannounced blocks, 51 to 100 of 299
PrefixAddressesRegistryCountryAllocated
185.85.92.0/221kRIPE NCCCZ23rd Jan 2015
192.108.128.0/24256RIPE NCCCZ12th Jan 1993
192.108.129.0/24256RIPE NCCCZ28th Sept 1992
192.111.44.0/24256RIPE NCCCZ7th Jun 1991
192.144.44.0/221kRIPE NCCCZ26th Nov 2018
192.146.204.0/24256RIPE NCCCZ4th Feb 1992
193.105.81.0/24256RIPE NCCCZ15th Nov 2019
193.124.158.0/23512RIPE NCCCZ1st Sept 1993
193.124.30.0/24256RIPE NCCCZ1st Sept 1993
193.124.55.0/24256RIPE NCCCZ1st Sept 1993
193.148.1.0/24256RIPE NCCCZ18th Nov 2019
193.148.5.0/24256RIPE NCCCZ18th Nov 2019
193.16.12.0/221kRIPE NCCCZ6th Jul 2018
193.164.32.0/198.2kRIPE NCCCZ14th Mar 1996
193.164.64.0/204.1kRIPE NCCCZ14th Mar 1996
193.168.244.0/221kRIPE NCCCZ12th Dec 2018
193.192.12.0/2664RIPE NCCCZ11th Nov 2024
193.242.104.0/24256RIPE NCCCZ30th Oct 2024
193.28.151.0/24256RIPE NCCCZ12th Nov 2024
193.33.14.0/23512RIPE NCCCZ19th Jan 2007
193.33.162.0/23512RIPE NCCCZ8th Oct 2019
193.36.227.0/24256RIPE NCCCZ14th Nov 2019
193.43.32.0/23512RIPE NCCCZ9th Oct 2019
194.107.72.0/221kRIPE NCCCZ1st Aug 2018
194.180.241.0/24256RIPE NCCCZ30th Apr 2025
194.180.8.0/24256RIPE NCCCZ15th Jan 2025
194.30.187.0/24256RIPE NCCCZ27th Apr 2005
194.48.208.0/24256RIPE NCCCZ15th Jan 2008
194.50.100.0/24256RIPE NCCCZ1st Sept 1993
194.50.203.0/24256RIPE NCCCZ1st Sept 1993
194.50.232.0/24256RIPE NCCCZ1st Sept 1993
194.50.242.0/24256RIPE NCCCZ1st Sept 1993
194.50.26.0/23512RIPE NCCCZ1st Sept 1993
194.62.116.0/24256RIPE NCCCZ25th Mar 2026
194.76.247.0/24256RIPE NCCCZ5th Apr 2012
195.12.39.0/24256RIPE NCCCZ10th Jan 2020
195.128.155.0/24256RIPE NCCCZ11th Apr 2011
195.130.220.0/24256RIPE NCCCZ23rd Jun 2025
195.137.182.0/24256RIPE NCCCZ26th Sept 2005
195.189.144.0/24256RIPE NCCCZ27th Apr 2006
195.225.72.0/221kRIPE NCCCZ10th Jan 2005
195.39.208.0/23512RIPE NCCCZ1st Apr 2003
195.60.89.0/25128RIPE NCCCZ12th May 2006
2001:678:104::/4865.5k × /64RIPE NCCCZ22nd Mar 2016
2001:678:11e0::/4865.5k × /64RIPE NCCCZ2nd Mar 2026
2001:678:17c::/4865.5k × /64RIPE NCCCZ25th Apr 2016
2001:678:5a4::/4865.5k × /64RIPE NCCCZ8th Dec 2017
2001:678:858::/4865.5k × /64RIPE NCCCZ15th Oct 2018
2001:678:88c::/4865.5k × /64RIPE NCCCZ9th Sept 2020
2001:678:9a4::/4865.5k × /64RIPE NCCCZ17th May 2019