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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

26,989 blocks match, ordered by prefix.

Allocated but unannounced blocks, 26301 to 26350 of 26989
PrefixAddressesRegistryCountryAllocated
66.179.24.0/221kARINUS9th Oct 2001
66.179.28.0/24256ARINUS9th Oct 2001
66.179.32.0/221kARINUS9th Oct 2001
66.179.38.0/23512ARINUS24th Jul 2024
66.179.40.0/212kARINUS19th Jul 2023
66.180.208.0/204.1kARINUS9th May 2006
66.180.64.0/24256ARINUS30th Sept 2016
66.181.96.0/204.1kARINUS24th Oct 2001
66.182.96.0/204.1kARINUS26th Mar 2024
66.186.112.0/204.1kARINUS10th Jan 2006
66.187.3.0/24256ARINUS27th Apr 2021
66.196.128.0/1816.4kARINUS22nd Jul 2020
66.203.250.0/24256ARINUS4th Dec 2025
66.203.251.0/24256ARINUS15th Jan 2026
66.203.255.0/24256ARINUS3rd Jun 2026
66.205.228.0/221kARINUS26th Sept 2019
66.205.234.0/24256ARINUS9th Sept 2019
66.205.240.0/23512ARINUS4th Sept 2019
66.206.208.0/204.1kARINUS16th Jun 2008
66.206.64.0/204.1kARINUS7th Dec 2001
66.207.48.0/23512ARINUS22nd Mar 2024
66.207.56.0/221kARINUS15th Mar 2006
66.208.92.0/221kARINUS1st Jul 2026
66.209.0.0/198.2kARINUS21st Dec 2001
66.209.144.0/204.1kARINUS4th Mar 2003
66.211.172.0/221kARINUS25th Jan 2006
66.212.48.0/23512ARINUS27th Mar 2017
66.220.32.0/221kARINUS18th Jan 2002
66.220.36.0/24256ARINUS18th Jan 2002
66.220.39.0/24256ARINUS24th Feb 2022
66.220.40.0/23512ARINUS18th Jan 2002
66.220.44.0/23512ARINUS18th Jan 2002
66.220.52.0/23512ARINUS17th Jan 2025
66.220.54.0/24256ARINUS17th Mar 2022
66.220.55.0/24256ARINUS16th Mar 2022
66.220.62.0/23512ARINUS18th Jan 2002
66.223.0.0/212kARINUS23rd Feb 2024
66.223.8.0/23512ARINUS23rd Feb 2024
66.223.80.0/212kARINUS23rd Feb 2024
66.223.88.0/221kARINUS23rd Feb 2024
66.223.92.0/23512ARINUS23rd Feb 2024
66.228.160.0/198.2kARINUS7th Feb 2002
66.228.92.0/221kARINUS30th Jun 2026
66.23.240.0/204.1kARINUS17th Oct 2007
66.230.128.0/1816.4kARINUS15th Feb 2002
66.233.0.0/1665.5kARINUS28th Feb 2006
66.234.15.0/24256ARINUS2nd May 2024
66.234.2.0/23512ARINUS26th Aug 2024
66.235.192.0/23512ARINUS7th Jul 2003
66.235.195.0/24256ARINUS7th Jul 2003