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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

85,346 blocks match, ordered by prefix.

Allocated but unannounced blocks, 53801 to 53850 of 85346
PrefixAddressesRegistryCountryAllocated
2400:f0e0::/324.3B × /64APNICAU30th Mar 2023
2400:f100::/324.3B × /64APNICHK1st Jun 2011
2400:f140::/324.3B × /64APNICID4th Apr 2017
2400:f200::/324.3B × /64APNICPH24th Mar 2010
2400:f240::/324.3B × /64APNICMM5th Apr 2017
2400:f320::/324.3B × /64APNICVN5th Apr 2023
2400:f380::/324.3B × /64APNICAU2nd May 2014
2400:f3e0::/324.3B × /64APNICID6th Apr 2023
2400:f440::/324.3B × /64APNICAU10th Apr 2017
2400:f480::/324.3B × /64APNICCN4th May 2014
2400:f4c0::/324.3B × /64APNICTH10th Apr 2017
2400:f4e0::/324.3B × /64APNICID11th Apr 2023
2400:f520::/324.3B × /64APNICTW12th Apr 2023
2400:f560::/324.3B × /64APNICIN13th Apr 2023
2400:f580::/324.3B × /64APNICID5th May 2014
2400:f5c0::/324.3B × /64APNICCN11th Apr 2017
2400:f600::/324.3B × /64APNICPH24th Mar 2010
2400:f680::/324.3B × /64APNICIN5th May 2014
2400:f7a0::/324.3B × /64APNICJP19th Apr 2023
2400:f7c0::/324.3B × /64APNICCN14th Apr 2017
2400:f7e0::/324.3B × /64APNICNZ20th Apr 2023
2400:f800::/324.3B × /64APNICHK10th Mar 2009
2400:f820::/324.3B × /64APNICIN24th Apr 2023
2400:f840::/324.3B × /64APNICCN14th Apr 2017
2400:f860::/324.3B × /64APNICCN24th Apr 2023
2400:f8a0::/324.3B × /64APNICIN24th Apr 2023
2400:f8c0::/324.3B × /64APNICBD15th Apr 2017
2400:f8e0::/324.3B × /64APNICAU27th Apr 2023
2400:f920::/324.3B × /64APNICIN28th Apr 2023
2400:f980::/324.3B × /64APNICCN8th May 2014
2400:f9a0::/324.3B × /64APNICJP1st May 2023
2400:fa20::/324.3B × /64APNICIN3rd May 2023
2400:fa60::/324.3B × /64APNICKH4th May 2023
2400:fac0::/324.3B × /64APNICCN17th Apr 2017
2400:fae0::/324.3B × /64APNICIN8th May 2023
2400:fb00::/324.3B × /64APNICID2nd Jun 2011
2400:fb40::/324.3B × /64APNICCN19th Apr 2017
2400:fb60::/324.3B × /64APNICCN8th May 2023
2400:fb80::/324.3B × /64APNICSG12th May 2014
2400:fba0::/324.3B × /64APNICJP8th May 2023
2400:fbc0::/324.3B × /64APNICCN19th Apr 2017
2400:fc20::/324.3B × /64APNICBD10th May 2023
2400:fc40::/324.3B × /64APNICCN19th Apr 2017
2400:fc80::/324.3B × /64APNICTW13th May 2014
2400:fca0::/324.3B × /64APNICBD11th May 2023
2400:fcc0::/324.3B × /64APNICCN19th Apr 2017
2400:fd20::/324.3B × /64APNICIN11th May 2023
2400:fda6::/324.3B × /64APNICKR25th Oct 2023
2400:fdc0::/324.3B × /64APNICIN19th Apr 2017
2400:fe40::/324.3B × /64APNICMM20th Apr 2017