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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

Unannounced blocks registered through ARIN

30,431 blocks match, ordered by prefix.

Allocated but unannounced blocks, 29251 to 29300 of 30431
PrefixAddressesRegistryCountryAllocated
45.34.0.0/15131kARINUS6th Dec 2023
45.40.16.0/204.1kARINUS26th Feb 2015
45.41.194.0/24256ARINUS9th Jul 2021
45.41.195.0/24256ARINUS29th Jul 2021
45.41.20.0/221kARINUS8th Jul 2021
45.41.248.0/221kARINUS7th Jul 2021
45.41.32.0/221kARINUS15th Jul 2021
45.41.36.0/24256ARINUS2nd Oct 2026
45.41.39.0/24256ARINUS3rd Oct 2024
45.42.164.0/221kARINUS8th Jan 2021
45.42.196.0/24256ARINUS2nd Feb 2021
45.42.199.0/24256ARINUS2nd Jun 2021
45.42.213.0/24256ARINUS1st Apr 2021
45.42.232.0/221kARINVC1st Apr 2021
45.42.249.0/24256ARINUS6th Apr 2021
45.45.140.0/221kARINUS7th Jul 2021
45.45.149.0/24256ARINUS14th Jul 2021
45.45.150.0/24256ARINUS21st Jul 2021
45.45.156.0/24256ARINUS31st Jul 2026
45.45.157.0/24256ARINUS21st Jul 2021
45.45.192.0/24256ARINUS10th Aug 2021
45.56.192.0/23512ARINUS28th Sept 2016
45.56.194.0/24256ARINUS28th Sept 2016
45.56.196.0/221kARINUS28th Sept 2016
45.59.151.0/24256ARINCA2nd Oct 2026
45.59.159.0/24256ARINUS5th Jan 2022
45.59.166.0/24256ARINUS8th Jul 2021
45.59.176.0/221kARINCA6th Jul 2021
45.59.180.0/221kARINUS29th Sept 2023
45.61.32.0/212kARINCA29th Sept 2026
45.62.48.0/204.1kARINUS16th Jan 2015
45.74.152.0/221kARINUS27th May 2026
45.74.160.0/204.1kARINUS23rd Apr 2015
45.74.180.0/221kARINUS7th Aug 2026
45.74.184.0/221kARINUS26th Jun 2026
45.74.208.0/23512ARINUS8th Jul 2026
45.74.254.0/23512ARINUS27th Feb 2026
45.9.232.0/24256ARINUS15th Feb 2024
46.17.176.0/221kARINUS21st May 2024
46.23.216.0/212kARINUS3rd Jun 2024
46.247.104.0/221kARINUS3rd Feb 2025
48.0.0.0/112.1MARINUS7th Dec 1990
48.104.0.0/13524kARINUS7th Dec 1990
48.112.0.0/121MARINUS7th Dec 1990
48.128.0.0/112.1MARINUS17th Jun 2026
48.32.0.0/13524kARINUS7th Dec 1990
48.40.0.0/14262kARINUS7th Dec 1990
48.48.0.0/121MARINUS7th Dec 1990
48.64.0.0/121MARINUS7th Dec 1990
48.80.0.0/121MARINUS17th Jun 2026