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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

26,277 blocks match, ordered by prefix.

Allocated but unannounced blocks, 23301 to 23350 of 26277
PrefixAddressesRegistryCountryAllocated
2610:198::/324.3B × /64ARINUS30th Mar 2007
2610:1b0::/324.3B × /64ARINUS4th Apr 2007
2610:1c2::/324.3B × /64ARINUS11th Apr 2007
2610:1d0::/324.3B × /64ARINUS16th Apr 2007
2610:1f8::/324.3B × /64ARINUS10th May 2007
2610:20:7000::/36268M × /64ARINUS8th Feb 2006
2610:20:a000::/35537M × /64ARINUS8th Feb 2006
2610:20:c000::/341.1B × /64ARINUS8th Feb 2006
2610:40::/324.3B × /64ARINUS17th Feb 2006
2610:50::/324.3B × /64ARINUS14th Mar 2006
2610:58::/324.3B × /64ARINUS24th Mar 2006
2610:88::/324.3B × /64ARINUS13th Jun 2006
2610:a0::/324.3B × /64ARINUS21st Jun 2006
2610:a2::/318.6B × /64ARINUS21st Jun 2006
2610:a4::/3017.2B × /64ARINUS21st Jun 2006
2610:b8::/324.3B × /64ARINUS1st Aug 2006
2610:c0::/324.3B × /64ARINUS7th Aug 2006
2610:c8::/324.3B × /64ARINUS16th Feb 2010
2610:d0::/324.3B × /64ARINUS9th May 2008
2620:0:100::/4865.5k × /64ARINUS21st Nov 2006
2620:0:110::/4865.5k × /64ARINUS1st Dec 2006
2620:0:1400::/424.2M × /64ARINUS20th Oct 2008
2620:0:140::/4865.5k × /64ARINUS15th Dec 2006
2620:0:1500::/418.4M × /64ARINUS30th Oct 2008
2620:0:1700::/441M × /64ARINUS11th Nov 2008
2620:0:170::/4865.5k × /64ARINUS28th Dec 2006
2620:0:1800::/432.1M × /64ARINUS20th Nov 2008
2620:0:1a00::/4865.5k × /64ARINUS11th Mar 2009
2620:0:1a0::/4865.5k × /64ARINUS11th Jan 2007
2620:0:1a20::/4865.5k × /64ARINUS13th Mar 2009
2620:0:1a30::/4865.5k × /64ARINUS18th Mar 2009
2620:0:1a50::/4865.5k × /64ARINUS23rd Mar 2009
2620:0:1a80::/4865.5k × /64ARINUS2nd Apr 2009
2620:0:1ab0::/4865.5k × /64ARINUS8th Apr 2009
2620:0:1ac0::/4865.5k × /64ARINUS15th Apr 2009
2620:0:1ad0::/45524k × /64ARINUS20th Apr 2009
2620:0:1ae0::/4865.5k × /64ARINUS27th Apr 2009
2620:0:1b0::/4865.5k × /64ARINUS16th Dec 2008
2620:0:1c0::/4865.5k × /64ARINUS17th Jan 2007
2620:0:1d0::/4865.5k × /64ARINUS25th Jan 2007
2620:0:1f0::/4865.5k × /64ARINUS29th Jan 2007
2620:0:2000::/424.2M × /64ARINUS23rd Mar 2009
2620:0:200::/4865.5k × /64ARINUS1st Feb 2007
2620:0:20::/4865.5k × /64ARINUS13th Sept 2006
2620:0:220::/4865.5k × /64ARINUS7th Feb 2007
2620:0:2210::/4865.5k × /64ARINUS4th May 2009
2620:0:2240::/4865.5k × /64ARINUS18th May 2009
2620:0:22a0::/4865.5k × /64ARINUS9th Jun 2009
2620:0:22c0::/4865.5k × /64ARINUS16th Jun 2009
2620:0:22d0::/4865.5k × /64ARINUS22nd Jun 2009