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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

921 blocks match, ordered by prefix.

Allocated but unannounced blocks, 51 to 100 of 921
PrefixAddressesRegistryCountryAllocated
103.181.12.0/23512APNICHK2nd Feb 2022
103.193.32.0/221kAPNICHK27th Jul 2015
103.194.36.0/221kAPNICHK5th Aug 2015
103.195.132.0/221kAPNICHK10th Sept 2015
103.196.124.0/221kAPNICHK22nd Sept 2015
103.198.248.0/221kAPNICHK21st Oct 2015
103.198.48.0/221kAPNICHK15th Oct 2015
103.198.82.0/24256APNICHK16th Oct 2015
103.20.165.0/24256APNICHK19th Sept 2012
103.201.72.0/221kAPNICHK19th Nov 2015
103.205.20.0/221kAPNICHK23rd Dec 2015
103.206.120.0/221kAPNICHK13th Jan 2016
103.207.159.0/24256APNICHK29th Jan 2016
103.207.93.0/24256APNICHK3rd Feb 2016
103.209.28.0/221kAPNICHK12th Feb 2016
103.211.173.0/24256APNICHK17th Mar 2016
103.215.188.0/221kAPNICHK26th Apr 2016
103.22.128.0/221kAPNICHK15th Jun 2011
103.224.248.0/221kAPNICHK28th Jan 2014
103.224.56.0/221kAPNICHK13th Jan 2014
103.228.28.0/221kAPNICHK21st Mar 2014
103.228.82.0/24256APNICHK25th Mar 2014
103.229.140.0/221kAPNICHK16th Apr 2014
103.229.144.0/221kAPNICHK16th Apr 2014
103.229.224.0/221kAPNICHK23rd Apr 2014
103.23.192.0/221kAPNICHK5th Dec 2011
103.230.160.0/221kAPNICHK1st May 2014
103.230.228.0/221kAPNICHK6th May 2014
103.232.0.0/221kAPNICHK21st May 2014
103.232.36.0/221kAPNICHK26th May 2014
103.232.68.0/221kAPNICHK27th May 2014
103.234.220.0/221kAPNICHK25th Jun 2014
103.234.72.0/221kAPNICHK11th Aug 2016
103.235.216.0/221kAPNICHK14th Sept 2016
103.240.92.0/221kAPNICHK13th Aug 2013
103.247.144.0/221kAPNICHK1st Feb 2012
103.248.180.0/221kAPNICHK6th Nov 2015
103.25.104.0/221kAPNICHK30th Apr 2013
103.252.132.0/221kAPNICHK29th Oct 2013
103.253.120.0/221kAPNICHK18th Nov 2013
103.255.127.0/24256APNICHK7th Jan 2014
103.27.0.0/24256APNICHK26th Jun 2013
103.28.44.0/221kAPNICHK16th Dec 2011
103.29.12.0/221kAPNICHK30th May 2011
103.29.72.0/221kAPNICHK22nd Jun 2011
103.41.124.0/221kAPNICHK21st Oct 2014
103.41.180.0/221kAPNICHK22nd Oct 2014
103.41.184.0/221kAPNICHK22nd Oct 2014
103.43.216.0/221kAPNICHK26th Nov 2014
103.47.220.0/221kAPNICHK8th Jan 2015