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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 28901 to 28950 of 30434
PrefixAddressesRegistryCountryAllocated
2620:c9:8000::/4865.5k × /64ARINUS16th Feb 2012
2620:c9::/4865.5k × /64ARINUS9th Mar 2011
2620:c9:a000::/4865.5k × /64ARINUS13th Jun 2024
2620:c9:c000::/4865.5k × /64ARINUS21st Jul 2015
2620:c:8000::/4865.5k × /64ARINUS7th Apr 2011
2620:c:a000::/4865.5k × /64ARINUS27th Oct 2016
2620:c:c000::/4865.5k × /64ARINUS25th Oct 2012
2620:c:e000::/4865.5k × /64ARINUS2nd Nov 2016
2620:ca:6000::/4865.5k × /64ARINCA20th Jun 2024
2620:ca:8000::/4865.5k × /64ARINUS17th Feb 2012
2620:ca::/4865.5k × /64ARINUS21st Oct 2010
2620:ca:a000::/4865.5k × /64ARINUS24th Jun 2024
2620:cb:4000::/4865.5k × /64ARINUS27th Jul 2015
2620:cb:6000::/4865.5k × /64ARINUS9th Jul 2024
2620:cb::/441M × /64ARINUS9th Mar 2011
2620:cb:a000::/4865.5k × /64ARINUS11th Jul 2024
2620:cb:c000::/4865.5k × /64ARINUS27th Jul 2015
2620:cb:e000::/4865.5k × /64ARINUS19th Jul 2024
2620:cc:2000::/4865.5k × /64ARINUS22nd Jul 2024
2620:cc:4000::/4865.5k × /64ARINUS30th Jul 2015
2620:cc::/4865.5k × /64ARINUS25th May 2010
2620:cc:a000::/4865.5k × /64ARINUS8th Aug 2024
2620:cd:4000::/4865.5k × /64ARINUS3rd Aug 2015
2620:cd:8000::/4865.5k × /64ARINUS24th Feb 2012
2620:cd:e000::/4865.5k × /64ARINUS4th Oct 2024
2620:ce:4000::/4865.5k × /64ARINUS10th Aug 2015
2620:ce:6000::/4865.5k × /64ARINUS10th Oct 2024
2620:ce:8000::/4865.5k × /64ARINUS27th Feb 2012
2620:ce::/4865.5k × /64ARINUS22nd Oct 2010
2620:ce:c000::/4865.5k × /64ARINUS10th Aug 2015
2620:cf:2000::/4865.5k × /64ARINBS29th Oct 2024
2620:cf:4000::/4865.5k × /64ARINUS10th Aug 2015
2620:cf:6000::/4865.5k × /64ARINUS6th Nov 2024
2620:cf:8000::/4865.5k × /64ARINUS5th Oct 2012
2620:cf:a000::/4865.5k × /64ARINUS8th Nov 2024
2620:cf:c000::/441M × /64ARINUS10th Aug 2015
2620:d0:2000::/4865.5k × /64ARINUS15th Nov 2024
2620:d0:4000::/4865.5k × /64ARINUS17th Aug 2015
2620:d0::/4865.5k × /64ARINUS5th Mar 2010
2620:d1:6000::/4865.5k × /64ARINUS5th Dec 2024
2620:d1::/4865.5k × /64ARINUS15th Mar 2011
2620:d1:a000::/4865.5k × /64ARINUS11th Dec 2024
2620:d1:c000::/4865.5k × /64ARINUS21st Aug 2015
2620:d2:4000::/4865.5k × /64ARINUS24th Aug 2015
2620:d2:a000::/4865.5k × /64ARINUS31st Jan 2025
2620:d2:c000::/4865.5k × /64ARINCA27th Aug 2015
2620:d3:2000::/4865.5k × /64ARINUS7th Feb 2025
2620:d3:4000::/4865.5k × /64ARINUS28th Aug 2015
2620:d3:a000::/4865.5k × /64ARINUS14th Feb 2025
2620:d3:c000::/4865.5k × /64ARINUS28th Aug 2015