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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

Unannounced blocks in United States

26,993 blocks match, ordered by prefix.

Allocated but unannounced blocks, 24401 to 24450 of 26993
PrefixAddressesRegistryCountryAllocated
2620:17:8000::/441M × /64ARINUS14th Apr 2011
2620:17::/4865.5k × /64ARINUS17th Dec 2010
2620:17:c000::/441M × /64ARINUS31st Jan 2013
2620:17:e000::/4865.5k × /64ARINUS14th Mar 2017
2620:17f::/324.3B × /64ARINUS16th Sept 2013
2620:180::/324.3B × /64ARINUS28th Apr 2011
2620:181::/36268M × /64ARINUS3rd Aug 2016
2620:182::/36268M × /64ARINUS5th Aug 2016
2620:183::/36268M × /64ARINUS26th Oct 2016
2620:185::/36268M × /64ARINUS14th Mar 2017
2620:187::/36268M × /64ARINUS1st May 2017
2620:188::/36268M × /64ARINUS9th May 2017
2620:18:4000::/4865.5k × /64ARINUS11th Feb 2013
2620:18:8000::/4865.5k × /64ARINUS15th Apr 2011
2620:18:e000::/4865.5k × /64ARINUS27th Mar 2017
2620:18a::/36268M × /64ARINUS23rd May 2017
2620:18b::/324.3B × /64ARINUS29th Jun 2017
2620:18e::/36268M × /64ARINUS31st Jul 2017
2620:191::/36268M × /64ARINUS6th Oct 2017
2620:193::/36268M × /64ARINUS4th May 2018
2620:194::/36268M × /64ARINUS25th May 2018
2620:195::/36268M × /64ARINUS25th Jun 2018
2620:198::/36268M × /64ARINUS29th Oct 2018
2620:199::/36268M × /64ARINUS26th Nov 2018
2620:19:6000::/4865.5k × /64ARINUS28th Mar 2017
2620:19::/4865.5k × /64ARINUS21st Dec 2010
2620:19:a000::/4865.5k × /64ARINUS5th Apr 2017
2620:19a::/36268M × /64ARINUS3rd Dec 2018
2620:19c::/36268M × /64ARINUS20th Feb 2019
2620:19d::/324.3B × /64ARINUS22nd Feb 2019
2620:19e::/36268M × /64ARINUS22nd Mar 2019
2620:1:4000::/4865.5k × /64ARINUS3rd Aug 2012
2620:1:8000::/4865.5k × /64ARINUS11th May 2022
2620:1::/4865.5k × /64ARINUS12th Nov 2010
2620:1:c000::/4865.5k × /64ARINUS6th Aug 2012
2620:1a0::/324.3B × /64ARINUS1st Aug 2011
2620:1a:2000::/441M × /64ARINUS6th Apr 2017
2620:1a:8000::/4865.5k × /64ARINUS15th Apr 2011
2620:1a::/4865.5k × /64ARINUS14th Jun 2010
2620:1a:a000::/4865.5k × /64ARINUS11th Apr 2017
2620:1a:c000::/4865.5k × /64ARINUS25th Feb 2013
2620:1b0::/324.3B × /64ARINUS3rd Oct 2011
2620:1b1::/36268M × /64ARINUS30th Sept 2019
2620:1b3::/36268M × /64ARINUS21st Jan 2020
2620:1b4::/324.3B × /64ARINUS29th Apr 2020
2620:1b5::/324.3B × /64ARINUS31st Jul 2020
2620:1b6::/324.3B × /64ARINUS16th Dec 2020
2620:1b8::/324.3B × /64ARINUS16th Mar 2021
2620:1b9::/324.3B × /64ARINUS16th Mar 2021
2620:1b:4000::/4865.5k × /64ARINUS26th Feb 2013