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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 53001 to 53050 of 85346
PrefixAddressesRegistryCountryAllocated
2400:14c0::/324.3B × /64APNICPK11th Nov 2016
2400:14e0::/324.3B × /64APNICBD18th Oct 2021
2400:1500::/324.3B × /64APNICTW1st Apr 2011
2400:1580::/324.3B × /64APNICNZ27th Sept 2013
2400:15c0::/324.3B × /64APNICCN11th Nov 2016
2400:15e0::/324.3B × /64APNICIN19th Oct 2021
2400:1600::/324.3B × /64APNICIN10th Mar 2010
2400:1640::/324.3B × /64APNICCN14th Nov 2016
2400:16a0::/324.3B × /64APNICVN19th Oct 2021
2400:16c0::/324.3B × /64APNICCN14th Nov 2016
2400:1720::/324.3B × /64APNICIN21st Oct 2021
2400:1740::/324.3B × /64APNICCN14th Nov 2016
2400:17c0::/324.3B × /64APNICCN14th Nov 2016
2400:17e0::/324.3B × /64APNICID22nd Oct 2021
2400:1800::/324.3B × /64APNICKR27th Jan 2009
2400:1820::/324.3B × /64APNICID22nd Oct 2021
2400:1840::/324.3B × /64APNICCN14th Nov 2016
2400:1880::/324.3B × /64APNICID30th Sept 2013
2400:18c0::/324.3B × /64APNICCN14th Nov 2016
2400:1940::/324.3B × /64APNICCN14th Nov 2016
2400:1960::/324.3B × /64APNICIN29th Oct 2021
2400:1980::/324.3B × /64APNICAF2nd Oct 2013
2400:19a0::/324.3B × /64APNICCN29th Oct 2021
2400:19c0::/324.3B × /64APNICCN14th Nov 2016
2400:19e0::/324.3B × /64APNICID1st Nov 2021
2400:1a40::/324.3B × /64APNICCN14th Nov 2016
2400:1a60::/324.3B × /64APNICIN1st Nov 2021
2400:1a80::/324.3B × /64APNICPK2nd Oct 2013
2400:1aa0::/324.3B × /64APNICVN1st Nov 2021
2400:1ac0::/324.3B × /64APNICCN14th Nov 2016
2400:1ae0::/324.3B × /64APNICMY2nd Nov 2021
2400:1b20::/324.3B × /64APNICIN2nd Nov 2021
2400:1b40::/324.3B × /64APNICCN14th Nov 2016
2400:1b80::/324.3B × /64APNICJP3rd Oct 2013
2400:1bc0::/324.3B × /64APNICAU14th Nov 2016
2400:1be0::/324.3B × /64APNICTW3rd Nov 2021
2400:1c40::/324.3B × /64APNICHK14th Nov 2016
2400:1c60::/324.3B × /64APNICIN3rd Nov 2021
2400:1c80::/324.3B × /64APNICHK4th Oct 2013
2400:1ca0::/324.3B × /64APNICIN3rd Nov 2021
2400:1cc0::/324.3B × /64APNICCN15th Nov 2016
2400:1ce0::/324.3B × /64APNICTW4th Nov 2021
2400:1d00::/324.3B × /64APNICSG4th Apr 2011
2400:1d20::/324.3B × /64APNICID5th Nov 2021
2400:1d40::/324.3B × /64APNICCN15th Nov 2016
2400:1d60::/324.3B × /64APNICID5th Nov 2021
2400:1da0::/324.3B × /64APNICVN8th Nov 2021
2400:1dc0::/324.3B × /64APNICCN15th Nov 2016
2400:1de0::/324.3B × /64APNICJP8th Nov 2021
2400:1e00::/324.3B × /64APNICHK11th Mar 2010