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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

26,277 blocks match, ordered by prefix.

Allocated but unannounced blocks, 24501 to 24550 of 26277
PrefixAddressesRegistryCountryAllocated
2620:75:e000::/4865.5k × /64ARINUS8th Aug 2019
2620:76:4000::/4865.5k × /64ARINUS7th May 2014
2620:76:8000::/4865.5k × /64ARINUS1st Aug 2011
2620:76::/4865.5k × /64ARINUS27th Aug 2010
2620:76:a000::/4865.5k × /64ARINUS3rd Sept 2019
2620:76:c000::/4865.5k × /64ARINUS8th May 2014
2620:76:e000::/4865.5k × /64ARINUS5th Sept 2019
2620:77:2000::/4865.5k × /64ARINUS10th Sept 2019
2620:77:6000::/4865.5k × /64ARINUS16th Sept 2019
2620:77:a000::/4865.5k × /64ARINUS20th Sept 2019
2620:78:4000::/4865.5k × /64ARINUS21st May 2014
2620:78::/4865.5k × /64ARINUS23rd Mar 2010
2620:78:e000::/4865.5k × /64ARINUS10th Oct 2019
2620:79:6000::/4865.5k × /64ARINUS30th Oct 2019
2620:79:a000::/4865.5k × /64ARINUS31st Oct 2019
2620:79:c000::/4865.5k × /64ARINUS22nd May 2014
2620:79:e000::/4865.5k × /64ARINUS4th Nov 2019
2620:7:8000::/4865.5k × /64ARINUS5th Apr 2011
2620:7::/4865.5k × /64ARINUS29th Nov 2010
2620:7:c000::/4865.5k × /64ARINUS29th Aug 2012
2620:7:e000::/4865.5k × /64ARINUS15th Sept 2016
2620:7a:2000::/4865.5k × /64ARINUS4th Nov 2019
2620:7a:4000::/4865.5k × /64ARINUS22nd May 2014
2620:7a:8000::/4865.5k × /64ARINUS3rd Aug 2011
2620:7a::/4865.5k × /64ARINUS1st Sept 2010
2620:7a:a000::/4865.5k × /64ARINUS16th Dec 2019
2620:7a:c000::/4865.5k × /64ARINUS28th May 2014
2620:7b:4000::/4865.5k × /64ARINUS2nd Jun 2014
2620:7b:6000::/441M × /64ARINUS17th Dec 2019
2620:7b:8000::/441M × /64ARINUS3rd Aug 2011
2620:7b::/4865.5k × /64ARINUS14th Feb 2011
2620:7b:e000::/4865.5k × /64ARINUS25th Jul 2012
2620:7c:1000::/4865.5k × /64ARINUS18th May 2016
2620:7c:5800::/4865.5k × /64ARINUS16th Jul 2026
2620:7c:d000::/4865.5k × /64ARINUS20th May 2016
2620:7d:2000::/4865.5k × /64ARINUS18th Dec 2019
2620:7d:4000::/4865.5k × /64ARINUS3rd Jun 2014
2620:7d:8000::/4865.5k × /64ARINUS3rd Aug 2011
2620:7d:c000::/4865.5k × /64ARINUS6th Jun 2014
2620:7f:1450::/4865.5k × /64ARINUS12th Mar 2026
2620:7f:c000::/4865.5k × /64ARINUS9th Jun 2014
2620:80:2000::/4865.5k × /64ARINUS15th Jan 2020
2620:80:6000::/4865.5k × /64ARINUS21st Jan 2020
2620:80:e000::/4865.5k × /64ARINUS3rd Feb 2020
2620:81:4000::/4865.5k × /64ARINUS16th Jun 2014
2620:81:6000::/4865.5k × /64ARINUS5th Feb 2020
2620:81:8000::/4865.5k × /64ARINUS8th Aug 2011
2620:81:a000::/4865.5k × /64ARINUS6th Feb 2020
2620:81:c000::/4865.5k × /64ARINUS18th Jun 2014
2620:82:2000::/4865.5k × /64ARINUS7th Feb 2020