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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 301 to 350 of 6735
PrefixAddressesRegistryCountryAllocated
103.14.156.0/221kAPNICCN3rd Aug 2012
103.14.240.0/221kAPNICCN13th Aug 2012
103.14.84.0/221kAPNICCN5th Jul 2012
103.140.140.0/23512APNICCN27th Jun 2019
103.140.144.0/23512APNICCN27th Jun 2019
103.140.192.0/23512APNICCN3rd Jul 2019
103.141.128.0/23512APNICCN24th Jul 2019
103.141.186.0/23512APNICCN31st Jul 2019
103.141.242.0/23512APNICCN8th Aug 2019
103.141.58.0/23512APNICCN18th Jul 2019
103.142.122.0/23512APNICCN27th Aug 2019
103.142.128.0/23512APNICCN27th Aug 2019
103.142.154.0/23512APNICCN30th Aug 2019
103.142.156.0/23512APNICCN30th Aug 2019
103.142.172.0/23512APNICCN2nd Sept 2019
103.142.180.0/23512APNICCN2nd Sept 2019
103.142.186.0/23512APNICCN3rd Sept 2019
103.142.238.0/23512APNICCN10th Sept 2019
103.142.28.0/23512APNICCN15th Aug 2019
103.142.58.0/23512APNICCN19th Aug 2019
103.142.82.0/23512APNICCN21st Aug 2019
103.143.124.0/23512APNICCN24th Sept 2019
103.143.132.0/23512APNICCN24th Sept 2019
103.143.134.0/23512APNICCN25th Sept 2019
103.143.174.0/23512APNICCN30th Sept 2019
103.143.74.0/23512APNICCN18th Sept 2019
103.144.136.0/23512APNICCN24th Oct 2019
103.144.72.0/23512APNICCN17th Oct 2019
103.145.188.0/23512APNICCN27th Nov 2019
103.145.98.0/23512APNICCN18th Nov 2019
103.146.138.0/23512APNICCN15th Dec 2019
103.146.236.0/23512APNICCN20th Dec 2019
103.146.72.0/23512APNICCN9th Dec 2019
103.147.206.0/23512APNICCN20th Jan 2020
103.148.174.0/23512APNICCN19th Feb 2020
103.149.17.0/24256APNICCN4th Mar 2020
103.149.210.0/23512APNICCN23rd Mar 2020
103.149.214.0/23512APNICCN23rd Mar 2020
103.149.220.0/23512APNICCN26th Mar 2020
103.149.44.0/23512APNICCN6th Mar 2020
103.149.6.0/23512APNICCN2nd Mar 2020
103.15.16.0/221kAPNICCN14th Aug 2012
103.15.200.0/221kAPNICCN31st Aug 2012
103.15.8.0/221kAPNICCN14th Aug 2012
103.15.96.0/221kAPNICCN23rd Aug 2012
103.150.10.0/23512APNICCN14th Jun 2023
103.150.122.0/23512APNICCN15th Apr 2020
103.150.126.0/23512APNICCN15th Apr 2020
103.150.128.0/23512APNICCN15th Apr 2020
103.150.130.0/23512APNICCN15th Apr 2020