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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

27,014 blocks match, ordered by prefix.

Allocated but unannounced blocks, 20201 to 20250 of 27014
PrefixAddressesRegistryCountryAllocated
23.174.168.0/24256ARINUS28th Mar 2024
23.174.176.0/24256ARINUS26th Feb 2021
23.174.24.0/24256ARINUS18th Mar 2024
23.174.32.0/24256ARINUS12th Feb 2019
23.174.56.0/24256ARINUS19th Mar 2024
23.174.64.0/24256ARINUS15th Feb 2018
23.174.8.0/24256ARINUS18th Mar 2024
23.175.16.0/24256ARINUS4th Mar 2021
23.175.224.0/24256ARINUS25th Feb 2019
23.175.8.0/24256ARINUS8th Apr 2024
23.176.120.0/24256ARINUS23rd Apr 2024
23.176.136.0/24256ARINUS23rd Apr 2024
23.176.64.0/24256ARINUS20th Feb 2018
23.176.80.0/24256ARINUS29th Mar 2021
23.176.88.0/24256ARINUS23rd Apr 2024
23.177.16.0/24256ARINUS8th Apr 2021
23.177.32.0/24256ARINUS28th Feb 2019
23.177.72.0/24256ARINUS6th May 2024
23.178.168.0/24256ARINUS20th May 2024
23.179.112.0/24256ARINUS30th Apr 2021
23.179.224.0/24256ARINUS8th Mar 2019
23.179.32.0/24256ARINUS8th Mar 2019
23.18.0.0/1665.5kARINUS12th Sept 2011
23.180.128.0/24256ARINUS13th Jun 2017
23.180.16.0/24256ARINUS13th May 2021
23.180.176.0/24256ARINUS21st May 2021
23.181.104.0/24256ARINUS11th Jun 2024
23.181.192.0/24256ARINUS20th Mar 2018
23.181.208.0/24256ARINUS10th Jun 2021
23.181.24.0/24256ARINUS11th Jun 2024
23.181.64.0/24256ARINUS19th Mar 2018
23.181.88.0/24256ARINUS11th Jun 2024
23.182.184.0/24256ARINUS24th Jun 2024
23.182.24.0/24256ARINUS18th Jun 2024
23.182.40.0/24256ARINUS20th Jun 2024
23.182.64.0/24256ARINUS26th Mar 2018
23.182.65.0/24256ARINUS8th Oct 2018
23.183.114.0/24256ARINUS8th Jul 2021
23.183.115.0/24256ARINUS8th Jul 2021
23.183.128.0/24256ARINUS21st Jun 2017
23.183.16.0/24256ARINUS1st Jul 2021
23.183.176.0/24256ARINUS13th Jul 2021
23.183.184.0/24256ARINUS11th Jul 2024
23.184.128.0/24256ARINUS23rd Jun 2017
23.184.16.0/24256ARINUS15th Jul 2021
23.184.192.0/24256ARINUS5th Apr 2018
23.184.216.0/24256ARINUS29th Jul 2024
23.184.232.0/24256ARINUS29th Jul 2024
23.185.128.0/24256ARINUS23rd Jun 2017
23.185.216.0/24256ARINUS5th Aug 2024