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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

25,269 blocks match, ordered by prefix.

Allocated but unannounced blocks, 24751 to 24800 of 25269
PrefixAddressesRegistryCountryAllocated
91.237.251.0/24256RIPE NCCDE9th Jul 2025
91.237.28.0/221kRIPE NCCSA19th Mar 2012
91.237.36.0/24256RIPE NCCUA5th Feb 2024
91.237.4.0/24256RIPE NCCUA16th Mar 2012
91.237.43.0/24256RIPE NCCFR15th May 2023
91.237.50.0/24256RIPE NCCPS20th Mar 2012
91.237.53.0/24256RIPE NCCRU11th Nov 2019
91.237.6.0/23512RIPE NCCUA16th Mar 2012
91.237.76.0/24256RIPE NCCRU21st Mar 2012
91.237.8.0/221kRIPE NCCGB16th Mar 2012
91.237.90.0/24256RIPE NCCSE21st Mar 2012
91.237.95.0/24256RIPE NCCSE22nd Mar 2012
91.237.97.0/24256RIPE NCCRU23rd Mar 2012
91.238.1.0/24256RIPE NCCFR11th Nov 2019
91.238.107.0/24256RIPE NCCFR11th Apr 2012
91.238.113.0/24256RIPE NCCSA11th Apr 2012
91.238.114.0/24256RIPE NCCHK11th Nov 2019
91.238.124.0/24256RIPE NCCPL12th Apr 2012
91.238.131.0/24256RIPE NCCFR12th Apr 2012
91.238.146.0/23512RIPE NCCUA13th Apr 2012
91.238.176.0/23512RIPE NCCNL18th Apr 2012
91.238.18.0/24256RIPE NCCFR11th Nov 2019
91.238.213.0/24256RIPE NCCHK11th Nov 2019
91.238.214.0/23512RIPE NCCIE25th Apr 2012
91.238.22.0/24256RIPE NCCUS3rd Apr 2012
91.238.220.0/24256RIPE NCCFR25th Apr 2012
91.238.246.0/23512RIPE NCCPL26th Apr 2012
91.238.250.0/24256RIPE NCCIT26th Apr 2012
91.238.252.0/23512RIPE NCCRU27th Apr 2012
91.238.36.0/24256RIPE NCCPL5th Apr 2012
91.238.37.0/24256RIPE NCCRO10th Apr 2012
91.238.50.0/24256RIPE NCCRO10th Apr 2012
91.238.6.0/23512RIPE NCCRS3rd Apr 2012
91.238.61.0/24256RIPE NCCRS10th Apr 2012
91.238.62.0/24256RIPE NCCRO13th Feb 2023
91.238.79.0/24256RIPE NCCRU10th Apr 2012
91.238.8.0/24256RIPE NCCSC11th Aug 2021
91.238.97.0/24256RIPE NCCRU11th Apr 2012
91.239.108.0/221kRIPE NCCIR18th May 2012
91.239.116.0/24256RIPE NCCBG7th Dec 2020
91.239.119.0/24256RIPE NCCIQ9th Dec 2020
91.239.120.0/24256RIPE NCCCZ7th Dec 2020
91.239.15.0/24256RIPE NCCAT11th Nov 2019
91.239.188.0/24256RIPE NCCFR7th May 2024
91.239.21.0/24256RIPE NCCES10th May 2012
91.239.210.0/24256RIPE NCCIR31st Aug 2022
91.239.215.0/24256RIPE NCCRU25th May 2012
91.239.218.0/24256RIPE NCCNO24th Apr 2023
91.239.219.0/24256RIPE NCCBE24th Apr 2023
91.239.22.0/24256RIPE NCCAM10th May 2012