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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 the most unannounced blocks, largest first.

Unannounced blocks

85,356 blocks match, ordered by prefix.

Allocated but unannounced blocks, 52401 to 52450 of 85356
PrefixAddressesRegistryCountryAllocated
23.132.137.0/24256ARINUS25th Feb 2022
23.132.20.0/24256ARINUS8th Jan 2025
23.132.240.0/24256ARINUS1st May 2019
23.132.248.0/24256ARINCA3rd Mar 2022
23.133.12.0/24256ARINUS23rd Jan 2025
23.133.128.0/24256ARINUS23rd Jan 2017
23.133.168.0/24256ARINCA17th Mar 2022
23.133.180.0/24256ARINUS3rd Feb 2025
23.133.36.0/24256ARINUS24th Jan 2025
23.133.44.0/24256ARINUS24th Jan 2025
23.133.6.0/24256ARINUS24th May 2016
23.133.92.0/24256ARINUS29th Jan 2025
23.133.96.0/24256ARINUS31st May 2018
23.134.100.0/24256ARINUS12th Feb 2025
23.134.116.0/24256ARINUS13th Feb 2025
23.134.132.0/24256ARINUS13th Feb 2025
23.134.204.0/24256ARINUS18th Feb 2025
23.134.40.0/24256ARINUS28th Mar 2022
23.134.48.0/24256ARINCA14th May 2019
23.134.56.0/24256ARINUS30th Mar 2022
23.134.80.0/24256ARINUS14th May 2019
23.135.172.0/24256ARINUS4th Mar 2025
23.135.180.0/24256ARINUS5th Mar 2025
23.135.188.0/24256ARINUS6th Mar 2025
23.135.204.0/24256ARINUS11th Mar 2025
23.135.225.0/24256ARINUS22nd Dec 2025
23.135.244.0/24256ARINUS13th Mar 2025
23.135.248.0/24256ARINUS4th May 2022
23.136.132.0/24256ARINUS27th Mar 2025
23.136.148.0/24256ARINUS28th Mar 2025
23.136.156.0/24256ARINUS28th Mar 2025
23.136.16.0/24256ARINUS4th Jun 2019
23.136.24.0/24256ARINUS9th May 2022
23.136.40.0/24256ARINUS9th May 2022
23.136.76.0/24256ARINUS19th Mar 2025
23.137.109.0/24256ARINUS28th Aug 2026
23.137.120.0/221kARINUS10th Jun 2022
23.137.124.0/23512ARINUS10th Jun 2022
23.137.156.0/24256ARINUS14th Apr 2025
23.137.188.0/24256ARINMX16th Apr 2025
23.137.32.0/24256ARINUS20th Jun 2018
23.137.36.0/24256ARINUS8th Apr 2025
23.137.92.0/24256ARINUS10th Apr 2025
23.138.0.0/24256ARINUS22nd Feb 2016
23.138.120.0/24256ARINMF11th Jul 2022
23.138.168.0/24256ARINUS14th Jul 2022
23.138.172.0/24256ARINUS6th May 2025
23.138.220.0/24256ARINUS14th May 2025
23.138.232.0/24256ARINUS15th Jul 2022
23.138.244.0/24256ARINUS19th May 2025