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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 351 to 400 of 6735
PrefixAddressesRegistryCountryAllocated
103.150.146.0/23512APNICCN17th Apr 2020
103.150.172.0/23512APNICCN21st Apr 2020
103.150.200.0/23512APNICCN23rd Apr 2020
103.150.216.0/23512APNICCN24th Apr 2020
103.150.244.0/23512APNICCN29th Apr 2020
103.150.66.0/23512APNICCN9th Apr 2020
103.150.72.0/23512APNICCN10th Apr 2020
103.151.142.0/23512APNICCN20th May 2020
103.151.158.0/23512APNICCN21st May 2020
103.152.120.0/23512APNICCN22nd Jun 2020
103.152.122.0/23512APNICCN22nd Jun 2020
103.152.152.0/23512APNICCN24th Jun 2020
103.152.168.0/23512APNICCN28th Jun 2020
103.152.192.0/23512APNICCN30th Jun 2020
103.152.200.0/23512APNICCN30th Jun 2020
103.152.250.0/23512APNICCN6th Jul 2020
103.152.30.0/23512APNICCN11th Jun 2020
103.153.114.0/23512APNICCN17th Jul 2020
103.153.122.0/23512APNICCN19th Jul 2020
103.153.132.0/23512APNICCN20th Jul 2020
103.153.146.0/23512APNICCN22nd Jul 2020
103.153.160.0/23512APNICCN23rd Jul 2020
103.154.164.0/23512APNICCN14th Aug 2020
103.154.168.0/23512APNICCN14th Aug 2020
103.154.18.0/23512APNICCN3rd Aug 2020
103.154.32.0/23512APNICCN5th Aug 2020
103.154.66.0/23512APNICCN7th Aug 2020
103.155.14.0/23512APNICCN24th Aug 2020
103.155.214.0/23512APNICCN16th Sept 2020
103.155.34.0/23512APNICCN26th Aug 2020
103.155.48.0/23512APNICCN31st Aug 2020
103.156.104.0/23512APNICCN23rd Sept 2020
103.156.158.0/23512APNICCN28th Sept 2020
103.156.228.0/23512APNICCN2nd Oct 2020
103.156.28.0/23512APNICCN21st Sept 2020
103.157.174.0/23512APNICCN22nd Oct 2020
103.157.212.0/23512APNICCN27th Oct 2020
103.157.234.0/23512APNICCN27th Oct 2020
103.157.254.0/23512APNICCN30th Oct 2020
103.157.30.0/23512APNICCN8th Oct 2020
103.158.16.0/23512APNICCN2nd Nov 2020
103.158.200.0/23512APNICCN18th Nov 2020
103.158.224.0/23512APNICCN18th Nov 2020
103.158.8.0/23512APNICCN30th Oct 2020
103.159.134.0/23512APNICCN1st Dec 2020
103.159.142.0/23512APNICCN2nd Dec 2020
103.16.108.0/221kAPNICCN5th Feb 2013
103.16.52.0/221kAPNICCN1st Feb 2013
103.16.80.0/221kAPNICCN4th Feb 2013
103.16.84.0/221kAPNICCN4th Feb 2013