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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

Browse by country

Countries with unannounced space registered through APNIC, largest first.

Unannounced blocks in United States

116 blocks match, ordered by prefix.

Allocated but unannounced blocks, 101 to 116 of 116
PrefixAddressesRegistryCountryAllocated
2405:22c0::/324.3B × /64APNICUS2nd Aug 2019
2405:b1c0::/324.3B × /64APNICUS7th Jan 2020
2405:ec40::/324.3B × /64APNICUS16th Mar 2020
2405:f9c0::/324.3B × /64APNICUS3rd Apr 2020
2406:3dc0::/324.3B × /64APNICUS9th Jul 2020
2406:9a80::/324.3B × /64APNICUS12th Aug 2016
2406:9f01::/324.3B × /64APNICUS7th Sept 2022
2406:b780::/324.3B × /64APNICUS17th Aug 2016
2406:e840::/324.3B × /64APNICUS15th Dec 2020
2407:40::/324.3B × /64APNICUS7th Jan 2021
2407:4100::/324.3B × /64APNICUS21st Jun 2013
2407:5880::/2934.4B × /64APNICUS23rd Sept 2016
2407:acc0::/324.3B × /64APNICUS21st Jul 2021
2407:ba40::/324.3B × /64APNICUS3rd Aug 2021
31.99.144.0/212kAPNICUS25th Nov 2010
45.250.72.0/221kAPNICUS17th May 2016