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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

25,269 blocks match, ordered by prefix.

Allocated but unannounced blocks, 21901 to 21950 of 25269
PrefixAddressesRegistryCountryAllocated
31.99.154.0/23512RIPE NCCGB25th Nov 2010
31.99.156.0/221kRIPE NCCGB25th Nov 2010
31.99.160.0/198.2kRIPE NCCGB25th Nov 2010
31.99.192.0/212kRIPE NCCDE25th Nov 2010
31.99.208.0/204.1kRIPE 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
36.255.92.0/221kRIPE NCCHR16th 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
37.140.253.0/24256RIPE 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
37.153.132.0/24256RIPE NCCUS13th Mar 2012
37.153.137.0/24256RIPE NCCTR13th Mar 2012
37.153.174.0/23512RIPE NCCRS13th Mar 2012
37.156.0.0/221kRIPE NCCIR13th Mar 2012
37.156.175.0/24256RIPE NCCGE13th Mar 2012
37.156.32.0/23512RIPE NCCPL13th Mar 2012
37.156.7.0/24256RIPE NCCRO13th Mar 2012
37.16.78.0/24256RIPE NCCFR2nd Aug 2021
37.18.176.0/212kRIPE NCCUS20th Dec 2011
37.18.84.0/24256RIPE NCCRU20th Dec 2011
37.186.28.0/23512RIPE NCCSA20th Mar 2012
37.186.30.0/24256RIPE NCCSA20th Mar 2012
37.186.31.0/24256RIPE NCCSA20th Mar 2012
37.19.24.0/212kRIPE NCCBA21st Dec 2011
37.200.84.0/24256RIPE NCCDE4th May 2020
37.202.32.0/204.1kRIPE NCCPL23rd Mar 2012
37.203.179.0/24256RIPE NCCGB26th Mar 2012