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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

26,277 blocks match, ordered by prefix.

Allocated but unannounced blocks, 25001 to 25050 of 26277
PrefixAddressesRegistryCountryAllocated
2620:e6:8000::/4865.5k × /64ARINUS20th Apr 2012
2620:e6::/4865.5k × /64ARINUS12th Mar 2012
2620:e6:c000::/4865.5k × /64ARINUS19th Nov 2015
2620:e7:4000::/4865.5k × /64ARINUS20th Nov 2015
2620:e7:c000::/4865.5k × /64ARINUS20th Nov 2015
2620:e8:4000::/4865.5k × /64ARINUS22nd Dec 2025
2620:e8:8000::/4865.5k × /64ARINUS26th Apr 2012
2620:e8:c000::/4865.5k × /64ARINUS2nd Dec 2015
2620:e9:8000::/4865.5k × /64ARINUS27th Apr 2012
2620:e9::/4865.5k × /64ARINUS23rd Mar 2011
2620:e9:c000::/4865.5k × /64ARINUS2nd Dec 2015
2620:e:2000::/4865.5k × /64ARINUS16th Nov 2016
2620:e:6000::/4865.5k × /64ARINUS21st Nov 2016
2620:e:8000::/4865.5k × /64ARINUS17th Jun 2014
2620:e::/4865.5k × /64ARINUS9th Jun 2010
2620:e:c000::/4865.5k × /64ARINUS15th Nov 2012
2620:e:e000::/4865.5k × /64ARINUS28th Nov 2016
2620:ea:4000::/4865.5k × /64ARINUS9th Dec 2015
2620:ea:8000::/4865.5k × /64ARINUS3rd May 2012
2620:ea::/441M × /64ARINUS4th Nov 2010
2620:eb:4000::/4865.5k × /64ARINUS16th Dec 2015
2620:eb:8000::/4865.5k × /64ARINUS4th May 2012
2620:eb::/4865.5k × /64ARINUS23rd Mar 2011
2620:eb:c000::/4865.5k × /64ARINUS18th Dec 2015
2620:ec:4000::/4865.5k × /64ARINUS18th Dec 2015
2620:ec:8000::/4865.5k × /64ARINUS4th May 2012
2620:ec::/4865.5k × /64ARINUS3rd Jun 2010
2620:ec:c000::/4865.5k × /64ARINUS18th Dec 2015
2620:ed::/4865.5k × /64ARINUS24th Mar 2011
2620:ee:4000::/4865.5k × /64ARINUS29th Dec 2015
2620:ee::/4865.5k × /64ARINUS5th Nov 2010
2620:ee:c000::/441M × /64ARINUS29th Dec 2015
2620:ef:4000::/4865.5k × /64ARINUS29th Dec 2015
2620:ef:8000::/4865.5k × /64ARINUS16th May 2012
2620:ef::/4865.5k × /64ARINUS23rd Dec 2025
2620:ef:c000::/4865.5k × /64ARINUS29th Dec 2015
2620:f0:4000::/441M × /64ARINUS30th Dec 2015
2620:f0:8000::/4865.5k × /64ARINUS20th Nov 2013
2620:f0::/4865.5k × /64ARINUS5th Mar 2010
2620:f1:8000::/4865.5k × /64ARINUS21st May 2012
2620:f2:8000::/4865.5k × /64ARINUS23rd May 2012
2620:f2:c000::/4865.5k × /64ARINUS14th Jan 2016
2620:f3:4000::/4865.5k × /64ARINUS15th Jan 2016
2620:f3:c000::/4865.5k × /64ARINUS15th Jan 2016
2620:f4:4000::/4016.8M × /64ARINUS15th Jan 2016
2620:f5:4000::/4865.5k × /64ARINUS21st Jan 2016
2620:f5:8000::/4865.5k × /64ARINUS31st May 2012
2620:f5::/4865.5k × /64ARINUS28th Mar 2011
2620:f5:c000::/4865.5k × /64ARINUS29th Jan 2016
2620:f6:4000::/441M × /64ARINUS3rd Feb 2016