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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 2501 to 2550 of 6735
PrefixAddressesRegistryCountryAllocated
137.59.59.0/24256APNICCN9th Jun 2016
137.59.88.0/221kAPNICCN27th Oct 2015
138.252.118.0/23512APNICCN30th Oct 2025
138.252.162.0/23512APNICCN6th Nov 2025
138.252.78.0/23512APNICCN21st Oct 2025
139.176.0.0/1665.5kAPNICCN10th Mar 2011
139.5.128.0/221kAPNICCN22nd Mar 2016
139.5.160.0/221kAPNICCN28th Mar 2016
139.5.192.0/221kAPNICCN29th Mar 2016
139.5.204.0/221kAPNICCN30th Mar 2016
139.5.212.0/221kAPNICCN30th Mar 2016
139.5.244.0/221kAPNICCN30th Mar 2016
139.5.56.0/221kAPNICCN3rd Mar 2016
139.5.80.0/221kAPNICCN16th Mar 2016
139.5.92.0/221kAPNICCN17th Mar 2016
14.0.0.0/212kAPNICCN12th Apr 2011
14.0.12.0/221kAPNICCN14th Apr 2011
14.1.0.0/221kAPNICCN14th Apr 2011
14.1.108.0/221kAPNICCN12th Jan 2016
14.1.24.0/221kAPNICCN14th Dec 2015
14.102.128.0/221kAPNICCN14th Apr 2011
14.102.180.0/221kAPNICCN13th Jan 2016
14.130.0.0/15131kAPNICCN18th Aug 2010
14.192.60.0/221kAPNICCN27th Sept 2010
14.192.76.0/221kAPNICCN14th Apr 2011
14.196.0.0/15131kAPNICCN3rd Sept 2010
144.48.156.0/221kAPNICCN14th Apr 2016
144.48.180.0/221kAPNICCN18th Apr 2016
144.48.184.0/221kAPNICCN18th Apr 2016
144.48.204.0/221kAPNICCN19th Apr 2016
144.48.208.0/221kAPNICCN19th Apr 2016
144.48.88.0/221kAPNICCN11th Apr 2016
144.79.10.0/23512APNICCN21st Nov 2025
144.79.148.0/23512APNICCN17th Dec 2025
144.79.28.0/23512APNICCN25th Nov 2025
144.79.4.0/23512APNICCN21st Nov 2025
144.79.42.0/23512APNICCN1st Dec 2025
144.79.84.0/23512APNICCN8th Dec 2025
146.196.124.0/221kAPNICCN22nd Mar 2016
146.196.72.0/221kAPNICCN21st Mar 2016
146.196.92.0/221kAPNICCN22nd Mar 2016
149.41.0.0/1665.5kAPNICCN16th Mar 1993
150.0.0.0/1665.5kAPNICCN29th Mar 2011
150.115.0.0/1665.5kAPNICCN29th Mar 2011
150.121.0.0/1665.5kAPNICCN29th Mar 2011
150.122.0.0/1665.5kAPNICCN29th Mar 2011
150.242.0.0/221kAPNICCN1st Jul 2014
150.242.112.0/221kAPNICCN3rd Jul 2014
150.242.116.0/221kAPNICCN3rd Jul 2014
150.242.120.0/221kAPNICCN3rd Jul 2014