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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

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Countries with unannounced space registered through RIPE NCC, largest first.

Unannounced blocks registered through RIPE NCC

24,896 blocks match, ordered by prefix.

Allocated but unannounced blocks, 21501 to 21550 of 24896
PrefixAddressesRegistryCountryAllocated
31.41.104.0/212kRIPE NCCUA28th Mar 2011
31.41.128.0/212kRIPE NCCUA29th Mar 2011
31.41.242.0/24256RIPE NCCRU6th Apr 2011
31.41.244.0/24256RIPE NCCRU6th Apr 2011
31.41.8.0/221kRIPE NCCRU11th Mar 2011
31.43.162.0/24256RIPE NCCSI1st Mar 2011
31.43.164.0/23512RIPE NCCUA1st Mar 2011
31.43.176.0/23512RIPE NCCPL1st Mar 2011
31.43.185.0/24256RIPE NCCUA1st Mar 2011
31.43.188.0/23512RIPE NCCUA1st Mar 2011
31.43.190.0/24256RIPE NCCUA1st Mar 2011
31.47.208.0/212kRIPE NCCRO22nd Mar 2011
31.7.224.0/204.1kRIPE NCCRU14th Apr 2011
31.71.0.0/1665.5kRIPE NCCGB25th Nov 2010
31.72.0.0/14262kRIPE NCCGB25th Nov 2010
31.78.0.0/15131kRIPE NCCGB25th Nov 2010
31.99.153.0/24256RIPE NCCGB25th Nov 2010
31.99.154.0/23512RIPE NCCGB25th Nov 2010
31.99.156.0/221kRIPE NCCGB25th Nov 2010
31.99.216.0/212kRIPE NCCGB25th Nov 2010
31.99.224.0/198.2kRIPE NCCGB25th Nov 2010
31.99.64.0/1816.4kRIPE NCCGB25th Nov 2010
36.255.148.0/221kRIPE NCCGB19th Feb 2016
37.1.144.0/24256RIPE NCCTR12th Dec 2011
37.1.146.0/23512RIPE NCCTR12th Dec 2011
37.1.148.0/23512RIPE NCCTR12th Dec 2011
37.1.150.0/24256RIPE NCCTR12th Dec 2011
37.10.112.0/24256RIPE NCCAT15th Dec 2011
37.10.116.0/24256RIPE NCCIM15th Dec 2011
37.10.117.0/24256RIPE NCCIR15th Dec 2011
37.10.120.0/221kRIPE NCCDE15th Dec 2011
37.122.128.0/212kRIPE NCCDE14th Feb 2012
37.122.192.0/212kRIPE NCCGB14th Feb 2012
37.122.208.0/212kRIPE NCCDE14th Feb 2012
37.122.224.0/204.1kRIPE NCCTR15th Feb 2012
37.123.0.0/1816.4kRIPE NCCTR15th Feb 2012
37.123.232.0/212kRIPE NCCBE16th Feb 2012
37.128.136.0/212kRIPE NCCIT17th Feb 2012
37.131.176.0/23512RIPE NCCDE23rd Feb 2012
37.131.178.0/24256RIPE NCCDE23rd Feb 2012
37.139.130.0/24256RIPE NCCBG13th Jun 2018
37.140.253.0/24256RIPE NCCGE21st Sept 2021
37.143.88.0/212kRIPE NCCUA2nd Mar 2012
37.148.160.0/24256RIPE NCCNL6th Mar 2012
37.148.162.0/23512RIPE NCCNL6th Mar 2012
37.148.164.0/24256RIPE NCCNL6th Mar 2012
37.148.165.0/24256RIPE NCCNL6th Mar 2012
37.148.166.0/23512RIPE NCCNL6th Mar 2012
37.153.137.0/24256RIPE NCCTR13th Mar 2012
37.153.174.0/23512RIPE NCCRS13th Mar 2012