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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 28301 to 28350 of 30434
PrefixAddressesRegistryCountryAllocated
2620:4b:2000::/4865.5k × /64ARINUS25th May 2018
2620:4b:4000::/441M × /64ARINUS2nd Oct 2013
2620:4b:8000::/441M × /64ARINUS25th May 2011
2620:4b::/4865.5k × /64ARINCA5th May 2014
2620:4b:a000::/4865.5k × /64ARINCA30th May 2018
2620:4c:2000::/4865.5k × /64ARINUS12th Jun 2018
2620:4c:4000::/441M × /64ARINUS3rd Oct 2013
2620:4c::/47131k × /64ARINUS28th Apr 2010
2620:4c:c000::/4865.5k × /64ARINUS4th Oct 2013
2620:4d:2000::/4865.5k × /64ARINUS13th Jun 2018
2620:4d:8000::/4865.5k × /64ARINUS27th May 2011
2620:4d::/4865.5k × /64ARINUS26th Jan 2011
2620:4d:c000::/4865.5k × /64ARINUS7th Oct 2013
2620:4e:4000::/4865.5k × /64ARINCA7th Oct 2013
2620:4e:6000::/4865.5k × /64ARINUS19th Jun 2018
2620:4e:8000::/4865.5k × /64ARINUS27th May 2011
2620:4f:4000::/4865.5k × /64ARINUS9th Oct 2013
2620:4f:6000::/4865.5k × /64ARINUS18th Jul 2018
2620:4f::/4865.5k × /64ARINUS27th Jan 2011
2620:4f:a000::/4865.5k × /64ARINUS23rd Jul 2018
2620:4f:c000::/4865.5k × /64ARINUS14th Oct 2013
2620:50:8000::/4865.5k × /64ARINCA11th Mar 2016
2620:50:8080::/4865.5k × /64ARINUS13th Jul 2012
2620:50::/441M × /64ARINUS25th Feb 2010
2620:50:c040::/4865.5k × /64ARINUS15th Apr 2016
2620:51:2000::/4865.5k × /64ARINUS30th Jul 2018
2620:51:4000::/4865.5k × /64ARINCA17th Oct 2013
2620:51:6000::/4865.5k × /64ARINUS31st Jul 2018
2620:51::/4865.5k × /64ARINUS31st Jan 2011
2620:51:a000::/4865.5k × /64ARINUS6th Aug 2018
2620:51:e000::/4865.5k × /64ARINUS6th Aug 2018
2620:52:4000::/4865.5k × /64ARINUS18th Oct 2013
2620:52:6000::/4865.5k × /64ARINUS9th Aug 2018
2620:52:8000::/441M × /64ARINUS9th Jun 2011
2620:53:4000::/441M × /64ARINUS22nd Oct 2013
2620:53:8000::/4865.5k × /64ARINUS10th Jun 2011
2620:53::/4865.5k × /64ARINUS31st Jan 2011
2620:53:c000::/4865.5k × /64ARINUS23rd Oct 2013
2620:54:4000::/4865.5k × /64ARINUS23rd Oct 2013
2620:54:6000::/4865.5k × /64ARINUS7th Jul 2026
2620:54::/4865.5k × /64ARINUS29th Apr 2010
2620:55:2000::/4865.5k × /64ARINCA30th Aug 2018
2620:55:4000::/441M × /64ARINUS25th Oct 2013
2620:55:8000::/4865.5k × /64ARINUS14th Jun 2011
2620:55::/4865.5k × /64ARINUS31st Jan 2011
2620:55:a000::/4865.5k × /64ARINUS30th Aug 2018
2620:55:c000::/4865.5k × /64ARINUS28th Oct 2013
2620:55:e000::/4865.5k × /64ARINUS4th Sept 2018
2620:56:2000::/4865.5k × /64ARINCA5th Sept 2018
2620:56:8000::/4865.5k × /64ARINUS14th Jun 2011