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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

30,434 blocks match, ordered by prefix.

Allocated but unannounced blocks, 28151 to 28200 of 30434
PrefixAddressesRegistryCountryAllocated
2620:2:8000::/4865.5k × /64ARINUS31st Mar 2011
2620:2::/4865.5k × /64ARINUS4th Jun 2010
2620:2:a000::/4865.5k × /64ARINUS12th Jul 2016
2620:2:c000::/4865.5k × /64ARINUS8th Aug 2012
2620:2:e000::/4865.5k × /64ARINUS19th Mar 2026
2620:2a:2000::/4865.5k × /64ARINUS17th Jul 2017
2620:2a:4000::/441M × /64ARINUS15th May 2013
2620:2a:8000::/4865.5k × /64ARINUS29th Apr 2011
2620:2a:a000::/4865.5k × /64ARINUS25th Jul 2017
2620:2a:e000::/4865.5k × /64ARINUS26th Jul 2017
2620:2b:4000::/441M × /64ARINUS20th May 2013
2620:2b:8000::/4865.5k × /64ARINUS2nd May 2011
2620:2b::/4865.5k × /64ARINUS4th Jan 2011
2620:2b:c000::/4865.5k × /64ARINCA22nd Nov 2019
2620:2c:40c0::/4865.5k × /64ARINUS17th Mar 2016
2620:2c:8080::/4865.5k × /64ARINUS28th Jun 2012
2620:2c::/441M × /64ARINUS20th Apr 2010
2620:2c:c040::/4865.5k × /64ARINUS30th Mar 2016
2620:2d:2000::/4865.5k × /64ARINCA4th Aug 2017
2620:2d:8000::/4865.5k × /64ARINUS2nd May 2011
2620:2d:c000::/441M × /64ARINUS4th Jun 2013
2620:2e::/424.2M × /64ARINUS29th Jun 2010
2620:2e:c040::/4865.5k × /64ARINUS21st Aug 2026
2620:2f:4000::/4865.5k × /64ARINUS11th Jun 2013
2620:2f:8000::/4865.5k × /64ARINUS3rd May 2011
2620:2f:a000::/4865.5k × /64ARINUS14th Aug 2017
2620:2f:c000::/4865.5k × /64ARINUS11th Jun 2013
2620:2f:e000::/4865.5k × /64ARINUS15th Aug 2017
2620:30:2000::/4865.5k × /64ARINUS18th Aug 2017
2620:30:4000::/4865.5k × /64ARINUS12th Jun 2013
2620:30:6000::/4865.5k × /64ARINUS18th Aug 2017
2620:31::/4865.5k × /64ARINUS10th Jan 2011
2620:31:a000::/4865.5k × /64ARINUS28th Aug 2017
2620:31:c000::/4865.5k × /64ARINUS21st Jun 2013
2620:31:e000::/4865.5k × /64ARINUS29th Aug 2017
2620:32:a000::/4865.5k × /64ARINUS7th Sept 2017
2620:32:c000::/441M × /64ARINUS1st Jul 2013
2620:33:2000::/4865.5k × /64ARINUS5th Jun 2026
2620:33:4000::/441M × /64ARINUS1st Jul 2013
2620:33:8000::/4865.5k × /64ARINUS4th May 2011
2620:33::/4865.5k × /64ARINUS11th Jan 2011
2620:33:a000::/441M × /64ARINUS21st Sept 2017
2620:33:c000::/4865.5k × /64ARINUS1st Jul 2013
2620:34:6000::/441M × /64ARINUS21st Sept 2017
2620:34:8000::/4865.5k × /64ARINUS4th May 2011
2620:34::/4865.5k × /64ARINUS21st Apr 2010
2620:35:4000::/441M × /64ARINCA10th Jul 2013
2620:35:a000::/4865.5k × /64ARINCA15th Jun 2026
2620:35:c000::/441M × /64ARINUS16th Jul 2013
2620:36:4000::/441M × /64ARINCA17th Jul 2013