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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

Browse by country

Countries with unannounced space registered through ARIN, largest first.

Unannounced blocks registered through ARIN

30,430 blocks match, ordered by prefix.

Allocated but unannounced blocks, 29701 to 29750 of 30430
PrefixAddressesRegistryCountryAllocated
66.132.236.0/24256ARINCA8th Aug 2003
66.132.237.0/24256ARINUS14th May 2024
66.132.238.0/23512ARINCA8th Aug 2003
66.132.245.0/24256ARINUS14th May 2024
66.132.252.0/23512ARINCA8th Aug 2003
66.132.255.0/24256ARINUS14th May 2024
66.133.12.0/24256ARINUS11th Jul 2001
66.133.56.0/24256ARINUS11th Jul 2001
66.133.72.0/212kARINUS9th Dec 2015
66.150.132.0/221kARINUS13th Jul 2001
66.150.72.0/221kARINUS13th Jul 2001
66.151.116.0/221kARINUS13th Jul 2001
66.151.124.0/221kARINUS13th Jul 2001
66.151.168.0/212kARINUS13th Jul 2001
66.151.212.0/221kARINUS13th Jul 2001
66.159.0.0/198.2kARINUS16th Jul 2002
66.163.208.0/24256ARINUS28th Apr 2014
66.163.215.0/24256ARINUS28th Apr 2014
66.163.216.0/24256ARINUS28th Apr 2014
66.163.220.0/24256ARINUS25th Apr 2024
66.163.222.0/24256ARINUS28th Apr 2014
66.170.112.0/204.1kARINUS18th Aug 2003
66.171.32.0/23512ARINUS12th Feb 2016
66.171.38.0/24256ARINUS12th Feb 2016
66.171.39.0/24256ARINUS28th May 2026
66.179.0.0/212kARINUS19th Jul 2023
66.179.103.0/24256ARINUS3rd May 2024
66.179.120.0/212kARINUS9th Oct 2001
66.179.128.0/212kARINUS19th Jul 2023
66.179.144.0/221kARINUS16th Jan 2024
66.179.162.0/23512ARINUS9th Oct 2001
66.179.164.0/23512ARINUS9th Oct 2001
66.179.170.0/23512ARINUS3rd Aug 2026
66.179.180.0/221kARINUS19th Jan 2024
66.179.184.0/221kARINUS9th Oct 2001
66.179.192.0/212kARINUS19th Jul 2023
66.179.200.0/23512ARINUS17th Jul 2024
66.179.22.0/24256ARINUS21st Jul 2023
66.179.232.0/212kARINUS19th Jul 2023
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
66.180.68.0/221kARINCA19th Dec 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