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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 28051 to 28100 of 30434
PrefixAddressesRegistryCountryAllocated
2620:1be::/36268M × /64ARINUS2nd Jun 2021
2620:1bf::/36268M × /64ARINUS17th Sept 2021
2620:1c0::/2868.7B × /64ARINUS14th Nov 2011
2620:1c:2000::/4865.5k × /64ARINUS26th Apr 2017
2620:1c:4000::/4865.5k × /64ARINUS4th Mar 2013
2620:1c:6000::/4865.5k × /64ARINUS27th Apr 2017
2620:1c:8000::/4865.5k × /64ARINUS18th Apr 2011
2620:1c::/4865.5k × /64ARINUS15th Apr 2010
2620:1c:a000::/4865.5k × /64ARINUS28th Apr 2017
2620:1c:c000::/4865.5k × /64ARINUS4th Mar 2013
2620:1d1::/324.3B × /64ARINUS24th Aug 2015
2620:1d2::/324.3B × /64ARINCA28th Sept 2015
2620:1d3::/324.3B × /64ARINUS13th Nov 2015
2620:1d4::/324.3B × /64ARINUS15th Jan 2016
2620:1d:2000::/4865.5k × /64ARINUS3rd May 2017
2620:1d:4000::/4865.5k × /64ARINUS11th Mar 2013
2620:1d:6000::/4865.5k × /64ARINUS4th May 2017
2620:1d:8000::/4865.5k × /64ARINUS18th Apr 2011
2620:1d::/441M × /64ARINUS27th Dec 2010
2620:1d:e000::/4865.5k × /64ARINUS5th May 2017
2620:1da::/36268M × /64ARINUS4th May 2016
2620:1db::/36268M × /64ARINUS24th May 2016
2620:1dc::/36268M × /64ARINUS24th Jun 2016
2620:1dd::/36268M × /64ARINCA12th Jul 2016
2620:1de::/36268M × /64ARINUS19th Jul 2016
2620:1e2::/36268M × /64ARINUS18th Jul 2014
2620:1e3::/36268M × /64ARINUS21st Aug 2014
2620:1e4::/324.3B × /64ARINCA13th Oct 2014
2620:1e7::/36268M × /64ARINUS26th Nov 2014
2620:1e9::/36268M × /64ARINUS8th Jan 2015
2620:1e:4000::/4865.5k × /64ARINUS19th Mar 2013
2620:1e:6000::/4865.5k × /64ARINUS8th May 2017
2620:1e:8000::/4865.5k × /64ARINUS18th Apr 2011
2620:1e:c000::/4865.5k × /64ARINUS21st Mar 2013
2620:1ea::/36268M × /64ARINUS4th Feb 2015
2620:1eb::/36268M × /64ARINUS26th Feb 2015
2620:1ef::/36268M × /64ARINUS10th Sept 2015
2620:1f0::/324.3B × /64ARINUS6th Apr 2012
2620:1f1::/36268M × /64ARINUS18th Sept 2013
2620:1f2::/324.3B × /64ARINUS25th Sept 2013
2620:1f3::/324.3B × /64ARINUS19th Nov 2013
2620:1f4::/36268M × /64ARINUS9th Dec 2013
2620:1f5::/36268M × /64ARINCA13th Jan 2014
2620:1f:2000::/4865.5k × /64ARINUS11th May 2017
2620:1f:6000::/4865.5k × /64ARINUS17th May 2017
2620:1f:c000::/4865.5k × /64ARINUS25th Mar 2013
2620:1f:e000::/4865.5k × /64ARINUS23rd May 2017
2620:1fa::/324.3B × /64ARINUS8th Apr 2014
2620:1fd::/36268M × /64ARINUS19th May 2014
2620:1fe::/36268M × /64ARINUS22nd May 2014