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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

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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, 251 to 299 of 299
PrefixAddressesRegistryCountryAllocated
2a14:27c0::/2934.4B × /64RIPE NCCCZ20th Mar 2024
2a14:aa80::/324.3B × /64RIPE NCCCZ6th Mar 2025
2a14:b100::/2934.4B × /64RIPE NCCCZ13th Jan 2025
2a14:e680::/2934.4B × /64RIPE NCCCZ8th Apr 2025
45.137.128.0/221kRIPE NCCCZ5th Aug 2019
45.139.36.0/221kRIPE NCCCZ8th Aug 2019
45.139.44.0/221kRIPE NCCCZ8th Aug 2019
45.139.64.0/221kRIPE NCCCZ8th Aug 2019
45.142.48.0/221kRIPE NCCCZ16th Aug 2019
45.148.80.0/221kRIPE NCCCZ2nd Sept 2019
45.81.42.0/23512RIPE NCCCZ17th May 2019
45.83.112.0/221kRIPE NCCCZ27th May 2019
46.227.8.0/212kRIPE NCCCZ26th Jan 2011
5.152.132.0/221kRIPE NCCCZ18th Jul 2012
5.187.34.0/24256RIPE NCCCZ9th Aug 2012
5.198.132.0/221kRIPE NCCCZ24th Aug 2012
5.63.184.0/24256RIPE NCCCZ13th Jun 2012
62.106.79.0/24256RIPE NCCCZ7th Oct 2021
62.4.104.0/221kRIPE NCCCZ11th Jun 2001
78.108.113.0/24256RIPE NCCCZ23rd Jun 2026
78.108.127.0/24256RIPE NCCCZ26th Jun 2026
78.108.144.0/212kRIPE NCCCZ22nd Jun 2007
79.171.184.0/212kRIPE NCCCZ17th Oct 2007
80.173.200.0/221kRIPE NCCCZ11th Jun 2003
80.249.133.0/24256RIPE NCCCZ22nd Oct 2020
80.254.232.0/221kRIPE NCCCZ15th Aug 2018
80.254.236.0/221kRIPE NCCCZ15th Aug 2018
80.74.32.0/204.1kRIPE NCCCZ18th Jun 2001
80.82.192.0/212kRIPE NCCCZ7th Jun 2012
81.22.236.0/221kRIPE NCCCZ11th Sept 2018
85.239.88.0/221kRIPE NCCCZ16th Jun 2005
85.8.197.0/24256RIPE NCCCZ26th Jun 2026
89.187.198.0/23512RIPE NCCCZ31st Aug 2011
91.108.185.0/24256RIPE NCCCZ12th Jan 2024
91.132.204.0/221kRIPE NCCCZ20th Dec 2018
91.132.232.0/221kRIPE NCCCZ21st Dec 2018
91.197.44.0/23512RIPE NCCCZ23rd May 2012
91.199.207.0/24256RIPE NCCCZ21st Feb 2008
91.207.230.0/23512RIPE NCCCZ3rd Oct 2019
91.207.234.0/23512RIPE NCCCZ3rd Oct 2019
91.208.112.0/24256RIPE NCCCZ26th Sept 2022
91.234.248.0/221kRIPE NCCCZ31st Jan 2012
91.239.120.0/24256RIPE NCCCZ7th Dec 2020
91.240.35.0/24256RIPE NCCCZ11th Jun 2012
91.241.168.0/212kRIPE NCCCZ18th Jul 2012
93.183.100.0/221kRIPE NCCCZ20th May 2008
93.183.120.0/221kRIPE NCCCZ20th May 2008
93.187.108.0/24256RIPE NCCCZ16th Jul 2008
95.143.109.0/24256RIPE NCCCZ20th Jan 2026