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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

27,001 blocks match, ordered by prefix.

Allocated but unannounced blocks, 23301 to 23350 of 27001
PrefixAddressesRegistryCountryAllocated
2607:4c40::/324.3B × /64ARINUS17th May 2023
2607:4ca0::/324.3B × /64ARINUS22nd Jul 2026
2607:4d80::/324.3B × /64ARINUS11th May 2016
2607:4e40::/324.3B × /64ARINUS22nd May 2023
2607:4ec0::/324.3B × /64ARINUS23rd May 2023
2607:4fc0::/324.3B × /64ARINUS31st May 2023
2607:5000::/3017.2B × /64ARINUS12th Apr 2010
2607:5004::/318.6B × /64ARINUS12th Apr 2010
2607:5006::/324.3B × /64ARINUS12th Apr 2010
2607:5080::/324.3B × /64ARINUS19th May 2016
2607:5140::/324.3B × /64ARINUS5th Jun 2023
2607:51c0::/324.3B × /64ARINUS7th Jun 2023
2607:5280::/324.3B × /64ARINUS27th May 2016
2607:5400::/324.3B × /64ARINUS4th Oct 2010
2607:540::/324.3B × /64ARINUS9th Nov 2022
2607:55c0::/324.3B × /64ARINUS28th Jun 2023
2607:5680::/324.3B × /64ARINUS2nd Jun 2016
2607:5700::/324.3B × /64ARINUS20th Apr 2012
2607:5740::/324.3B × /64ARINUS7th Jul 2023
2607:57c0::/324.3B × /64ARINUS7th Jul 2023
2607:58c0::/324.3B × /64ARINUS12th Jul 2023
2607:59c0::/324.3B × /64ARINUS13th Jul 2023
2607:5a00::/324.3B × /64ARINUS1st Mar 2011
2607:5a40::/324.3B × /64ARINUS14th Jul 2023
2607:5b00::/324.3B × /64ARINUS23rd Jan 2014
2607:5c00::/324.3B × /64ARINUS4th Oct 2010
2607:5cc0::/324.3B × /64ARINUS24th Jul 2023
2607:5ec0::/324.3B × /64ARINUS31st Jul 2023
2607:5f00::/324.3B × /64ARINUS25th Apr 2012
2607:5f80::/324.3B × /64ARINUS14th Jun 2016
2607:5fc0::/324.3B × /64ARINUS2nd Aug 2023
2607:600::/324.3B × /64ARINUS18th Feb 2011
2607:6140::/324.3B × /64ARINUS7th Aug 2023
2607:6200::/324.3B × /64ARINUS2nd Mar 2011
2607:6340::/324.3B × /64ARINUS18th Aug 2023
2607:640::/324.3B × /64ARINUS10th Nov 2022
2607:6440::/2868.7B × /64ARINUS25th Aug 2023
2607:6580::/324.3B × /64ARINUS29th Jun 2016
2607:65c0::/324.3B × /64ARINUS29th Aug 2023
2607:6600::/324.3B × /64ARINUS2nd Mar 2011
2607:6640::/324.3B × /64ARINUS31st Aug 2023
2607:6700::/324.3B × /64ARINUS8th May 2012
2607:6740::/324.3B × /64ARINUS5th Sept 2023
2607:67c0::/324.3B × /64ARINUS6th Sept 2023
2607:6840::/324.3B × /64ARINUS7th Sept 2023
2607:6940::/324.3B × /64ARINUS8th Sept 2023
2607:6a00::/324.3B × /64ARINUS3rd Mar 2011
2607:6a80::/324.3B × /64ARINUS7th Jul 2016
2607:6b00::/324.3B × /64ARINUS10th May 2012
2607:6c0::/324.3B × /64ARINUS14th Nov 2022