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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

1,422 blocks match, ordered by prefix.

Allocated but unannounced blocks, 1401 to 1422 of 1422
PrefixAddressesRegistryCountryAllocated
61.47.24.0/24256APNICJP1st Mar 2005
61.47.27.0/24256APNICJP1st Mar 2005
61.47.29.0/24256APNICJP1st Mar 2005
61.47.3.0/24256APNICJP1st Mar 2005
61.47.4.0/23512APNICJP1st Mar 2005
61.47.44.0/23512APNICJP1st Mar 2005
61.47.46.0/24256APNICJP1st Mar 2005
61.47.49.0/24256APNICJP1st Mar 2005
61.47.50.0/23512APNICJP1st Mar 2005
61.47.53.0/24256APNICJP1st Mar 2005
61.47.54.0/23512APNICJP1st Mar 2005
61.47.56.0/24256APNICJP1st Mar 2005
61.47.64.0/23512APNICJP1st Mar 2005
61.47.66.0/24256APNICJP1st Mar 2005
61.47.72.0/212kAPNICJP1st Mar 2005
61.47.98.0/23512APNICJP1st Mar 2005
61.5.240.0/23512APNICJP28th Jul 2006
61.5.244.0/24256APNICJP28th Jul 2006
61.87.12.0/23512APNICJP26th Sept 2003
61.87.8.0/221kAPNICJP26th Sept 2003
65.99.63.0/24256APNICJP2nd Aug 2004
81.203.0.0/1665.5kAPNICJP12th Nov 2002