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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

30,434 blocks match, ordered by prefix.

Allocated but unannounced blocks, 28701 to 28750 of 30434
PrefixAddressesRegistryCountryAllocated
2620:a0:a000::/4865.5k × /64ARINUS24th Nov 2021
2620:a0:c000::/4865.5k × /64ARINUS15th Dec 2014
2620:a0:e000::/4865.5k × /64ARINUS24th Nov 2021
2620:a1:2000::/4865.5k × /64ARINCA29th Nov 2021
2620:a1:6000::/4865.5k × /64ARINUS13th Dec 2021
2620:a1:8000::/4865.5k × /64ARINUS29th Sept 2011
2620:a1:a000::/4865.5k × /64ARINUS13th Dec 2021
2620:a1:c000::/4865.5k × /64ARINUS22nd Dec 2014
2620:a1:e000::/4865.5k × /64ARINUS14th Dec 2021
2620:a2:4000::/4865.5k × /64ARINUS29th Dec 2014
2620:a2:8000::/4865.5k × /64ARINUS29th Sept 2011
2620:a2::/4865.5k × /64ARINUS4th Oct 2010
2620:a2:a000::/4865.5k × /64ARINUS20th Dec 2021
2620:a3:2000::/4865.5k × /64ARINUS20th Dec 2021
2620:a3:4000::/441M × /64ARINUS30th Dec 2014
2620:a3:8000::/4865.5k × /64ARINUS30th Sept 2011
2620:a3::/4865.5k × /64ARINUS28th Feb 2011
2620:a3:a010::/4865.5k × /64ARINUS23rd Jun 2016
2620:a3:c020::/4865.5k × /64ARINUS19th Mar 2014
2620:a4:40::/4865.5k × /64ARINUS5th Mar 2014
2620:a4:6070::/4865.5k × /64ARINUS5th Jul 2016
2620:a4:8860::/4865.5k × /64ARINUS6th Mar 2026
2620:a4:b040::/4865.5k × /64ARINUS18th Dec 2025
2620:a4:d820::/4865.5k × /64ARINUS9th Mar 2026
2620:a5:4000::/4865.5k × /64ARINUS6th Jan 2015
2620:a5::/4865.5k × /64ARINUS28th Feb 2011
2620:a5:e000::/4865.5k × /64ARINUS18th Jan 2022
2620:a6:6000::/4865.5k × /64ARINUS24th Jan 2022
2620:a6::/4865.5k × /64ARINUS4th Oct 2010
2620:a6:a000::/4865.5k × /64ARINUS1st Feb 2022
2620:a6:c000::/4865.5k × /64ARINUS15th Jan 2015
2620:a6:e000::/4865.5k × /64ARINUS14th Feb 2022
2620:a7:2000::/4865.5k × /64ARINUS16th Feb 2022
2620:a7:8000::/4865.5k × /64ARINUS4th Oct 2011
2620:a7:a000::/4865.5k × /64ARINUS4th Mar 2022
2620:a7:e000::/4865.5k × /64ARINUS7th Mar 2022
2620:a8:4000::/4865.5k × /64ARINUS27th Jan 2015
2620:a8:8000::/4865.5k × /64ARINUS10th Oct 2011
2620:a8:a000::/4865.5k × /64ARINUS4th Apr 2022
2620:a8:e000::/4865.5k × /64ARINUS7th Apr 2022
2620:a9:2000::/4865.5k × /64ARINUS7th Apr 2022
2620:a9:8000::/441M × /64ARINUS9th Dec 2013
2620:a9::/4865.5k × /64ARINUS1st Mar 2011
2620:a9:c080::/4865.5k × /64ARINUS11th May 2016
2620:a:4000::/4865.5k × /64ARINUS17th Sept 2012
2620:a:6000::/4865.5k × /64ARINUS30th Sept 2016
2620:a:8000::/4865.5k × /64ARINUS6th Apr 2011
2620:a:a000::/4865.5k × /64ARINUS7th Oct 2016
2620:a:c000::/4865.5k × /64ARINUS17th Sept 2012
2620:a:e000::/4865.5k × /64ARINUS7th Oct 2016