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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

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Countries with the most unannounced blocks, largest first.

Unannounced blocks

85,248 blocks match, ordered by prefix.

Allocated but unannounced blocks, 62951 to 63000 of 85248
PrefixAddressesRegistryCountryAllocated
2620:3:a000::/4865.5k × /64ARINCA21st Jul 2016
2620:3:e000::/4865.5k × /64ARINUS26th Mar 2026
2620:3a:8000::/4865.5k × /64ARINUS11th May 2011
2620:3a::/4865.5k × /64ARINUS2nd Jul 2010
2620:3a:e000::/4865.5k × /64ARINUS3rd Nov 2017
2620:3b:2000::/4865.5k × /64ARINUS3rd Nov 2017
2620:3b:6000::/4865.5k × /64ARINUS6th Nov 2017
2620:3b:8000::/4865.5k × /64ARINUS11th May 2011
2620:3b::/4865.5k × /64ARINUS20th Jan 2011
2620:3b:c000::/441M × /64ARINUS9th Aug 2013
2620:3c:40c0::/4865.5k × /64ARINUS17th Mar 2016
2620:3c:8080::/4865.5k × /64ARINUS29th Jun 2012
2620:3c:c040::/4865.5k × /64ARINUS13th Apr 2016
2620:3d:4000::/4865.5k × /64ARINUS9th Aug 2013
2620:3d:6000::/4865.5k × /64ARINUS29th Nov 2017
2620:3d:8000::/4865.5k × /64ARINUS12th May 2011
2620:3d::/4865.5k × /64ARINUS21st Jan 2011
2620:3e:2000::/4865.5k × /64ARINUS22nd Dec 2017
2620:3e:6000::/4865.5k × /64ARINUS16th Jun 2026
2620:3e:8000::/4865.5k × /64ARINUS12th May 2011
2620:3e:c000::/4865.5k × /64ARINUS14th Aug 2013
2620:3e:e000::/4865.5k × /64ARINUS29th Dec 2017
2620:40:2000::/4865.5k × /64ARINUS23rd Jan 2018
2620:40:8000::/4865.5k × /64ARINUS13th May 2011
2620:40::/4865.5k × /64ARINUS27th Jan 2010
2620:40:c000::/4865.5k × /64ARINUS27th Aug 2013
2620:40:e000::/4865.5k × /64ARINUS30th Jan 2018
2620:41:2000::/4865.5k × /64ARINUS31st Jan 2018
2620:41:4000::/4865.5k × /64ARINCA24th Jun 2026
2620:41:8000::/4865.5k × /64ARINUS13th May 2011
2620:41:a000::/4865.5k × /64ARINUS6th Feb 2018
2620:42:2000::/4865.5k × /64ARINUS7th Feb 2018
2620:42:4000::/4865.5k × /64ARINUS28th Aug 2013
2620:42:6000::/4865.5k × /64ARINUS20th Oct 2025
2620:42:8000::/4865.5k × /64ARINUS26th Jun 2026
2620:42::/4865.5k × /64ARINUS9th Jul 2010
2620:42:a000::/4865.5k × /64ARINUS12th Feb 2018
2620:42:c000::/4865.5k × /64ARINCA29th Aug 2013
2620:42:e000::/4865.5k × /64ARINCA12th Feb 2018
2620:43:2000::/4865.5k × /64ARINUS15th Feb 2018
2620:43:4000::/4865.5k × /64ARINUS3rd Sept 2013
2620:43:6000::/4865.5k × /64ARINUS21st Feb 2018
2620:43:8000::/4865.5k × /64ARINUS17th May 2011
2620:43::/4865.5k × /64ARINUS24th Jan 2011
2620:43:a000::/4865.5k × /64ARINUS22nd Feb 2018
2620:43:e000::/4865.5k × /64ARINUS22nd Feb 2018
2620:44:2000::/4865.5k × /64ARINUS22nd Feb 2018
2620:44:4000::/4865.5k × /64ARINUS9th Sept 2013
2620:44:8000::/4865.5k × /64ARINUS17th May 2011
2620:44:c000::/4865.5k × /64ARINUS2nd Jul 2026