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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 the most unannounced blocks, largest first.

Unannounced blocks in China

6,735 blocks match, ordered by prefix.

Allocated but unannounced blocks, 5651 to 5700 of 6735
PrefixAddressesRegistryCountryAllocated
2407:fb80::/324.3B × /64APNICCN8th Nov 2016
2407:fc80::/324.3B × /64APNICCN8th Nov 2016
2407:fd80::/324.3B × /64APNICCN8th Nov 2016
2408:6000::/241.1T × /64APNICCN16th Jul 2020
2409:1000::/2017.6T × /64APNICCN4th Apr 2025
240a:8000::/218.8T × /64APNICCN30th Jan 2013
240b:2000::/224.4T × /64APNICCN24th Nov 2021
240b:6000::/2017.6T × /64APNICCN20th Oct 2022
240b:8000::/218.8T × /64APNICCN16th Aug 2013
240b:a000::/25550B × /64APNICCN17th Nov 2022
240c:8000::/218.8T × /64APNICCN5th Sept 2014
240d:8000::/241.1T × /64APNICCN5th Feb 2015
240e:1000::/2017.6T × /64APNICCN27th Dec 2018
240e:2000::/1935.2T × /64APNICCN27th Dec 2018
240f:4000::/241.1T × /64APNICCN9th Jul 2019
240f:8000::/241.1T × /64APNICCN27th Apr 2015
240f:c000::/241.1T × /64APNICCN17th Sept 2019
2602:f70d::/36268M × /64ARINCN28th Jan 2025
27.0.160.0/221kAPNICCN1st Feb 2016
27.0.188.0/221kAPNICCN1st Feb 2016
27.103.0.0/1665.5kAPNICCN28th May 2010
27.106.128.0/1816.4kAPNICCN8th Jun 2010
27.109.32.0/198.2kAPNICCN7th Mar 2011
27.112.112.0/221kAPNICCN19th Nov 2015
27.112.116.0/221kAPNICCN19th Nov 2015
27.112.80.0/204.1kAPNICCN5th Jul 2010
27.113.128.0/1816.4kAPNICCN8th Jul 2010
27.116.44.0/221kAPNICCN19th Jul 2010
27.121.120.0/212kAPNICCN12th Apr 2011
27.121.72.0/212kAPNICCN12th Apr 2011
27.131.220.0/221kAPNICCN29th Apr 2010
27.34.232.0/212kAPNICCN12th Apr 2011
27.50.40.0/212kAPNICCN12th Apr 2011
27.54.152.0/212kAPNICCN12th Apr 2011
27.54.192.0/1816.4kAPNICCN25th Mar 2010
27.54.72.0/212kAPNICCN12th Apr 2011
27.98.208.0/204.1kAPNICCN25th May 2010
2a03:f900::/2934.4B × /64RIPE NCCCN20th Apr 2011
2a0a:2840::/2934.4B × /64RIPE NCCCN28th Feb 2017
2a13:8b40::/2934.4B × /64RIPE NCCCN6th Jul 2023
36.0.0.0/221kAPNICCN14th Apr 2011
36.0.128.0/1732.8kAPNICCN9th Mar 2011
36.0.16.0/204.1kAPNICCN12th Apr 2011
36.0.32.0/198.2kAPNICCN12th Apr 2011
36.0.64.0/1816.4kAPNICCN11th Mar 2011
36.0.8.0/212kAPNICCN28th Jan 2011
36.254.0.0/1665.5kAPNICCN31st Jan 2011
36.255.172.0/221kAPNICCN22nd Feb 2016
36.255.176.0/221kAPNICCN22nd Feb 2016
36.37.0.0/198.2kAPNICCN12th Apr 2011