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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 801 to 850 of 1422
PrefixAddressesRegistryCountryAllocated
2001:df0:ebc0::/4865.5k × /64APNICJP4th Jul 2022
2001:df1:4380::/4865.5k × /64APNICJP28th Aug 2019
2001:df1:c580::/4865.5k × /64APNICJP25th Oct 2019
2001:df1:da80::/4865.5k × /64APNICJP1st Nov 2019
2001:df2:9b40::/4865.5k × /64APNICJP22nd Jun 2023
2001:df2:af00::/4865.5k × /64APNICJP3rd Oct 2017
2001:df2:da00::/4865.5k × /64APNICJP21st Jun 2016
2001:df3:4b80::/4865.5k × /64APNICJP31st Mar 2020
2001:df3:9380::/4865.5k × /64APNICJP27th Apr 2020
2001:df3:a2c0::/4865.5k × /64APNICJP4th Apr 2024
2001:df3:b780::/4865.5k × /64APNICJP14th May 2020
2001:df3:bc00::/4865.5k × /64APNICJP23rd Apr 2015
2001:df4:6680::/4865.5k × /64APNICJP5th Aug 2020
2001:df4:7200::/4865.5k × /64APNICJP1st Sept 2016
2001:df4:b480::/4865.5k × /64APNICJP31st Aug 2020
2001:df5:6400::/4865.5k × /64APNICJP6th Aug 2015
2001:df6:2c80::/4865.5k × /64APNICJP4th Mar 2021
2001:df6:34c0::/4865.5k × /64APNICJP13th Oct 2025
2001:df6:5fc0::/4865.5k × /64APNICJP30th Nov 2025
2001:df6:6000::/4865.5k × /64APNICJP9th Jul 2013
2001:df6:a000::/4865.5k × /64APNICJP9th Jul 2013
2001:df6:fd40::/4865.5k × /64APNICJP29th Apr 2026
2001:df7:1ac0::/4865.5k × /64APNICJP12th Jun 2026
2001:df7:8380::/4865.5k × /64APNICJP8th Sept 2021
2001:df7:f000::/4865.5k × /64APNICJP14th Nov 2013
2001:e28::/324.3B × /64APNICJP2nd Jan 2004
2001:f08::/324.3B × /64APNICJP7th Jun 2004
2001:fa0::/324.3B × /64APNICJP7th Dec 2004
202.0.72.0/24256APNICJP1st Jul 1997
202.0.76.0/24256APNICJP21st Jan 1998
202.12.64.0/221kAPNICJP5th Apr 2011
202.131.8.0/212kAPNICJP15th Apr 2005
202.138.80.0/204.1kAPNICJP17th May 2005
202.14.224.0/24256APNICJP28th Aug 2018
202.140.0.0/198.2kAPNICJP25th Mar 1997
202.143.8.0/212kAPNICJP27th Apr 2005
202.152.208.0/204.1kAPNICJP16th Aug 2005
202.166.185.0/24256APNICJP6th Dec 2007
202.172.64.0/198.2kAPNICJP13th Apr 2004
202.179.208.0/204.1kAPNICJP3rd Jun 2004
202.180.176.0/204.1kAPNICJP11th Feb 2004
202.191.112.0/212kAPNICJP6th Dec 2005
202.20.115.0/24256APNICJP4th Oct 1993
202.20.116.0/24256APNICJP4th Oct 1993
202.20.123.0/24256APNICJP14th Apr 2010
202.20.124.0/24256APNICJP14th Apr 2010
202.21.145.0/24256APNICJP16th Nov 1993
202.21.146.0/24256APNICJP16th Nov 1993
202.22.64.0/1816.4kAPNICJP14th Apr 2010
202.42.104.0/212kAPNICJP9th Jul 1999