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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

Unannounced blocks in United States

26,277 blocks match, ordered by prefix.

Allocated but unannounced blocks, 24751 to 24800 of 26277
PrefixAddressesRegistryCountryAllocated
2620:af::/441M × /64ARINUS1st Mar 2011
2620:af:e000::/4865.5k × /64ARINUS7th Sept 2022
2620:b0:6000::/4865.5k × /64ARINUS19th Sept 2022
2620:b0:a000::/4865.5k × /64ARINUS20th Sept 2022
2620:b0:c000::/4865.5k × /64ARINUS3rd Mar 2015
2620:b0:e000::/4865.5k × /64ARINUS29th Sept 2022
2620:b1:2000::/4865.5k × /64ARINUS4th Oct 2022
2620:b1::/4865.5k × /64ARINUS1st Mar 2011
2620:b1:a000::/4865.5k × /64ARINUS12th Oct 2022
2620:b1:c000::/4865.5k × /64ARINUS5th Mar 2015
2620:b2:6000::/4865.5k × /64ARINUS18th Oct 2022
2620:b2:8000::/4865.5k × /64ARINUS10th Nov 2011
2620:b2::/4865.5k × /64ARINUS26th Nov 2012
2620:b2:c000::/4865.5k × /64ARINUS12th Mar 2015
2620:b2:e000::/4865.5k × /64ARINUS28th Oct 2022
2620:b3:4000::/4865.5k × /64ARINUS13th Mar 2015
2620:b3:8000::/4865.5k × /64ARINUS10th Nov 2011
2620:b3::/4865.5k × /64ARINUS1st Mar 2011
2620:b3:a000::/4865.5k × /64ARINUS6th Dec 2022
2620:b4:2000::/441M × /64ARINUS9th Dec 2022
2620:b4:4000::/4865.5k × /64ARINUS17th Mar 2015
2620:b4:6000::/4865.5k × /64ARINUS9th Dec 2022
2620:b4:a000::/4865.5k × /64ARINUS29th Dec 2022
2620:b4:c000::/4865.5k × /64ARINUS18th Mar 2015
2620:b4:e000::/4865.5k × /64ARINUS10th Jan 2023
2620:b5:2000::/441M × /64ARINUS10th Jan 2023
2620:b5:4000::/4865.5k × /64ARINUS18th Mar 2015
2620:b5:6000::/4865.5k × /64ARINUS11th Jan 2023
2620:b5:8000::/4865.5k × /64ARINUS14th Nov 2011
2620:b5::/4865.5k × /64ARINUS1st Mar 2011
2620:b5:c000::/4865.5k × /64ARINUS26th Mar 2015
2620:b6:2000::/4865.5k × /64ARINUS14th Feb 2023
2620:b6:4000::/4865.5k × /64ARINUS30th Mar 2015
2620:b6:8000::/4865.5k × /64ARINUS1st Dec 2011
2620:b6:a000::/4865.5k × /64ARINUS22nd Mar 2023
2620:b6:c000::/4865.5k × /64ARINUS12th Apr 2015
2620:b6:e000::/4865.5k × /64ARINUS30th Mar 2023
2620:b7::/4865.5k × /64ARINUS1st Mar 2011
2620:b7:a000::/4865.5k × /64ARINUS15th May 2023
2620:b7:c000::/4865.5k × /64ARINUS17th Apr 2015
2620:b7:e000::/4865.5k × /64ARINUS17th May 2023
2620:b8:2000::/4865.5k × /64ARINUS17th May 2023
2620:b8:6000::/4865.5k × /64ARINUS8th Jun 2023
2620:b8::/4865.5k × /64ARINUS31st Mar 2010
2620:b8:c000::/4865.5k × /64ARINUS27th Apr 2015
2620:b8:e000::/4865.5k × /64ARINUS22nd Jun 2023
2620:b9:2000::/4865.5k × /64ARINUS23rd Jun 2023
2620:b9:4000::/4865.5k × /64ARINUS30th Apr 2015
2620:b9:6000::/4865.5k × /64ARINUS23rd Jun 2023
2620:b9:8000::/4865.5k × /64ARINUS7th Dec 2011