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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 401 to 450 of 6735
PrefixAddressesRegistryCountryAllocated
103.16.88.0/221kAPNICCN4th Feb 2013
103.160.112.0/23512APNICCN16th Dec 2020
103.160.114.0/23512APNICCN16th Dec 2020
103.160.244.0/23512APNICCN28th Dec 2020
103.160.254.0/23512APNICCN29th Dec 2020
103.160.32.0/23512APNICCN11th Dec 2020
103.160.34.0/23512APNICCN11th Dec 2020
103.161.102.0/23512APNICCN7th Jan 2021
103.161.14.0/23512APNICCN29th Dec 2020
103.161.208.0/23512APNICCN14th Jan 2021
103.162.116.0/23512APNICCN4th Feb 2021
103.162.32.0/23512APNICCN26th Jan 2021
103.163.28.0/23512APNICCN18th Feb 2021
103.163.32.0/23512APNICCN19th Feb 2021
103.163.74.0/23512APNICCN23rd Feb 2021
103.164.178.0/23512APNICCN23rd Mar 2021
103.164.4.0/23512APNICCN10th Mar 2021
103.164.40.0/23512APNICCN11th Mar 2021
103.164.42.0/23512APNICCN11th Mar 2021
103.164.64.0/23512APNICCN15th Mar 2021
103.164.76.0/23512APNICCN16th Mar 2021
103.165.44.0/23512APNICCN28th Mar 2021
103.165.52.0/23512APNICCN29th Mar 2021
103.165.82.0/23512APNICCN30th Mar 2021
103.166.138.0/23512APNICCN25th Apr 2021
103.166.20.0/23512APNICCN13th Apr 2021
103.166.50.0/23512APNICCN15th Apr 2021
103.166.52.0/23512APNICCN15th Apr 2021
103.166.54.0/23512APNICCN15th Apr 2021
103.166.84.0/23512APNICCN20th Apr 2021
103.167.0.0/23512APNICCN10th May 2021
103.167.100.0/23512APNICCN11th May 2023
103.167.36.0/23512APNICCN12th May 2021
103.168.170.0/23512APNICCN21st Jun 2021
103.168.98.0/23512APNICCN16th Jun 2021
103.169.108.0/23512APNICCN2nd Jul 2021
103.169.162.0/23512APNICCN7th Jul 2021
103.169.202.0/23512APNICCN13th Jul 2021
103.17.120.0/221kAPNICCN28th Feb 2013
103.17.136.0/221kAPNICCN2nd Nov 2015
103.17.160.0/221kAPNICCN4th Mar 2013
103.17.204.0/221kAPNICCN6th Mar 2013
103.17.64.0/221kAPNICCN23rd Jun 2016
103.170.134.0/23512APNICCN27th Jul 2021
103.171.214.0/23512APNICCN17th Aug 2021
103.171.32.0/23512APNICCN5th Aug 2021
103.172.160.0/23512APNICCN1st Sept 2021
103.172.32.0/23512APNICCN23rd Aug 2021
103.173.102.0/23512APNICCN17th Sept 2021
103.173.182.0/23512APNICCN25th Sept 2021