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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

6,720 blocks match, ordered by prefix.

Allocated but unannounced blocks, 4001 to 4050 of 6720
PrefixAddressesRegistryCountryAllocated
220.152.128.0/1732.8kAPNICCN25th Aug 2006
220.155.0.0/1665.5kAPNICCN16th Aug 2006
220.158.240.0/221kAPNICCN8th Oct 2015
220.252.0.0/1665.5kAPNICCN28th Feb 2003
221.136.0.0/1665.5kAPNICCN7th Jul 2003
223.20.0.0/15131kAPNICCN6th Aug 2010
223.201.0.0/1665.5kAPNICCN21st Jul 2010
223.255.0.0/1732.8kAPNICCN10th Aug 2010
223.29.208.0/221kAPNICCN1st Dec 2015
2400:1040::/324.3B × /64APNICCN9th Nov 2016
2400:12c0::/324.3B × /64APNICCN10th Nov 2016
2400:1340::/324.3B × /64APNICCN10th Nov 2016
2400:1380::/324.3B × /64APNICCN24th Sept 2013
2400:15c0::/324.3B × /64APNICCN11th Nov 2016
2400:1640::/324.3B × /64APNICCN14th Nov 2016
2400:16c0::/324.3B × /64APNICCN14th Nov 2016
2400:1740::/324.3B × /64APNICCN14th Nov 2016
2400:17c0::/324.3B × /64APNICCN14th Nov 2016
2400:1840::/324.3B × /64APNICCN14th Nov 2016
2400:18c0::/324.3B × /64APNICCN14th Nov 2016
2400:1940::/324.3B × /64APNICCN14th Nov 2016
2400:19a0::/324.3B × /64APNICCN29th Oct 2021
2400:19c0::/324.3B × /64APNICCN14th Nov 2016
2400:1a40::/324.3B × /64APNICCN14th Nov 2016
2400:1ac0::/324.3B × /64APNICCN14th Nov 2016
2400:1b40::/324.3B × /64APNICCN14th Nov 2016
2400:1cc0::/324.3B × /64APNICCN15th Nov 2016
2400:1d40::/324.3B × /64APNICCN15th Nov 2016
2400:1dc0::/324.3B × /64APNICCN15th Nov 2016
2400:1e40::/324.3B × /64APNICCN15th Nov 2016
2400:1ec0::/324.3B × /64APNICCN15th Nov 2016
2400:1f40::/324.3B × /64APNICCN15th Nov 2016
2400:1fc0::/324.3B × /64APNICCN15th Nov 2016
2400:3040::/324.3B × /64APNICCN15th Nov 2016
2400:3140::/324.3B × /64APNICCN15th Nov 2016
2400:3160::/324.3B × /64APNICCN12th Nov 2021
2400:31c0::/324.3B × /64APNICCN15th Nov 2016
2400:32c0::/324.3B × /64APNICCN16th Nov 2016
2400:3340::/324.3B × /64APNICCN16th Nov 2016
2400:33c0::/324.3B × /64APNICCN16th Nov 2016
2400:3440::/324.3B × /64APNICCN16th Nov 2016
2400:34c0::/324.3B × /64APNICCN16th Nov 2016
2400:3540::/324.3B × /64APNICCN16th Nov 2016
2400:35c0::/324.3B × /64APNICCN16th Nov 2016
2400:3600::/324.3B × /64APNICCN12th Mar 2010
2400:3640::/324.3B × /64APNICCN16th Nov 2016
2400:3660::/324.3B × /64APNICCN23rd Nov 2021
2400:36c0::/324.3B × /64APNICCN16th Nov 2016
2400:38c0::/324.3B × /64APNICCN17th Nov 2016
2400:39c0::/324.3B × /64APNICCN17th Nov 2016