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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 23351 to 23400 of 26277
PrefixAddressesRegistryCountryAllocated
2620:0:2300::/441M × /64ARINUS3rd Jun 2009
2620:0:2400::/4016.8M × /64ARINUS1st May 2009
2620:0:240::/4865.5k × /64ARINUS14th Feb 2007
2620:0:260::/4865.5k × /64ARINUS2nd Mar 2007
2620:0:2800::/4865.5k × /64ARINUS24th Jun 2009
2620:0:2840::/4865.5k × /64ARINUS15th Jul 2009
2620:0:2850::/4865.5k × /64ARINUS17th Jul 2009
2620:0:2880::/4865.5k × /64ARINUS22nd Jul 2009
2620:0:28d0::/4865.5k × /64ARINUS4th Aug 2009
2620:0:28f0::/4865.5k × /64ARINUS11th Aug 2009
2620:0:290::/4865.5k × /64ARINUS30th Mar 2007
2620:0:2b0::/4865.5k × /64ARINUS4th Apr 2007
2620:0:2b20::/4865.5k × /64ARINUS21st Aug 2009
2620:0:2b50::/4865.5k × /64ARINUS27th Aug 2009
2620:0:2b60::/4865.5k × /64ARINUS31st Aug 2009
2620:0:2bc0::/46262k × /64ARINUS28th Sept 2009
2620:0:2c0::/4865.5k × /64ARINUS23rd Apr 2007
2620:0:2e00::/4865.5k × /64ARINUS13th Oct 2009
2620:0:2e10::/4865.5k × /64ARINUS13th Oct 2009
2620:0:2e30::/4865.5k × /64ARINUS23rd Oct 2009
2620:0:2e40::/4865.5k × /64ARINUS26th Oct 2009
2620:0:2e70::/441M × /64ARINUS28th Oct 2009
2620:0:2ea0::/441M × /64ARINUS13th Nov 2009
2620:0:2eb0::/4865.5k × /64ARINUS20th Nov 2009
2620:0:2f0::/4865.5k × /64ARINUS8th May 2007
2620:0:320::/4865.5k × /64ARINUS21st May 2007
2620:0:350::/46262k × /64ARINUS1st Jun 2007
2620:0:360::/47131k × /64ARINUS5th Jun 2007
2620:0:390::/4865.5k × /64ARINUS12th Jun 2007
2620:0:3c0::/4865.5k × /64ARINUS19th Jun 2007
2620:0:3e0::/4865.5k × /64ARINUS29th Jun 2007
2620:0:5010::/4865.5k × /64ARINUS9th Dec 2009
2620:0:5030::/4865.5k × /64ARINUS28th Dec 2009
2620:0:5040::/4865.5k × /64ARINUS30th Dec 2009
2620:0:50a0::/4865.5k × /64ARINUS14th Jan 2010
2620:0:50b0::/4865.5k × /64ARINUS21st Jan 2010
2620:0:50c0::/4865.5k × /64ARINUS21st Jan 2010
2620:0:50d0::/47131k × /64ARINUS22nd Jan 2010
2620:0:5200::/4865.5k × /64ARINUS30th Jul 2010
2620:0:600::/4865.5k × /64ARINUS3rd Jul 2007
2620:0:60::/4865.5k × /64ARINUS3rd Oct 2006
2620:0:630::/4865.5k × /64ARINUS11th Jul 2007
2620:0:640::/4865.5k × /64ARINUS13th Jul 2007
2620:0:650::/4865.5k × /64ARINUS20th Jul 2007
2620:0:670::/47131k × /64ARINUS24th Jul 2007
2620:0:680::/4865.5k × /64ARINUS31st Jul 2007
2620:0:6a0::/4865.5k × /64ARINUS2nd Aug 2007
2620:0:6c0::/45524k × /64ARINUS18th Apr 2023
2620:0:6d0::/4865.5k × /64ARINUS22nd Aug 2007
2620:0:6f0::/4865.5k × /64ARINUS28th Aug 2007