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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 2751 to 2800 of 6735
PrefixAddressesRegistryCountryAllocated
182.255.60.0/221kAPNICCN3rd Aug 2016
182.49.0.0/1665.5kAPNICCN22nd Feb 2010
182.54.244.0/221kAPNICCN3rd Nov 2015
183.78.160.0/221kAPNICCN19th Nov 2015
183.78.164.0/221kAPNICCN19th Nov 2015
183.91.128.0/221kAPNICCN25th Nov 2009
183.91.136.0/212kAPNICCN12th Apr 2011
192.102.204.0/221kAPNICCN11th Apr 1991
192.124.154.0/24256APNICCN23rd Sept 1991
192.140.128.0/221kAPNICCN2nd Apr 2016
192.140.132.0/221kAPNICCN2nd Apr 2016
192.140.136.0/221kAPNICCN2nd Apr 2016
192.140.156.0/221kAPNICCN4th Apr 2016
192.140.192.0/221kAPNICCN4th Apr 2016
192.140.196.0/221kAPNICCN4th Apr 2016
192.140.200.0/221kAPNICCN4th Apr 2016
192.140.204.0/221kAPNICCN4th Apr 2016
192.232.34.0/23512APNICCN4th Jan 2026
192.232.44.0/23512APNICCN6th Jan 2026
192.232.46.0/23512APNICCN6th Jan 2026
192.51.172.0/23512APNICCN24th Jul 2025
192.55.46.0/23512APNICCN26th Jun 1989
192.55.68.0/221kAPNICCN26th Jun 1989
198.175.100.0/221kAPNICCN12th May 1993
2001:254::/324.3B × /64APNICCN25th Nov 2005
2001:4438::/324.3B × /64APNICCN15th Aug 2005
2001:678:12b8::/4865.5k × /64RIPE NCCCN26th Jun 2026
2001:678:12c4::/4865.5k × /64RIPE NCCCN16th Jul 2026
2001:678:12cc::/4865.5k × /64RIPE NCCCN16th Jul 2026
2001:67c:2c1c::/4865.5k × /64RIPE NCCCN11th Jun 2024
2001:67c:a1c::/4865.5k × /64RIPE NCCCN17th Jun 2022
2001:67c:ebc::/4865.5k × /64RIPE NCCCN13th Jun 2024
2001:7fa:10::/4865.5k × /64APNICCN31st May 2006
2001:7fa:5::/4865.5k × /64APNICCN6th Nov 2003
2001:da9::/324.3B × /64APNICCN3rd Feb 2005
2001:dd8:5::/4865.5k × /64APNICCN5th Mar 2010
2001:df0:1bc0::/4865.5k × /64APNICCN25th Nov 2021
2001:df0:25c0::/4865.5k × /64APNICCN6th Dec 2021
2001:df0:2e00::/4865.5k × /64APNICCN31st Dec 2015
2001:df0:2e80::/4865.5k × /64APNICCN16th Apr 2019
2001:df0:423::/4865.5k × /64APNICCN13th Nov 2012
2001:df0:85c0::/4865.5k × /64APNICCN7th Mar 2022
2001:df0:9c0::/4865.5k × /64APNICCN11th Nov 2021
2001:df0:9d40::/4865.5k × /64APNICCN4th Apr 2022
2001:df0:ac40::/4865.5k × /64APNICCN21st Apr 2022
2001:df0:bf80::/4865.5k × /64APNICCN26th Jun 2019
2001:df0:d880::/4865.5k × /64APNICCN8th Jul 2019
2001:df0:f8c0::/4865.5k × /64APNICCN13th Jul 2022
2001:df1:5280::/4865.5k × /64APNICCN4th Sept 2019
2001:df1:5b80::/4865.5k × /64APNICCN6th Sept 2019