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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

27,014 blocks match, ordered by prefix.

Allocated but unannounced blocks, 6951 to 7000 of 27014
PrefixAddressesRegistryCountryAllocated
192.28.136.0/221kARINUS16th Feb 1988
192.28.140.0/221kARINUS16th Feb 1988
192.28.192.0/1816.4kARINUS16th Feb 1988
192.30.0.0/198.2kARINUS23rd Oct 2012
192.30.104.0/221kARINUS9th Nov 2012
192.30.108.0/24256ARINUS10th Mar 1987
192.30.110.0/23512ARINUS18th Jul 2014
192.30.113.0/24256ARINUS16th Jun 2001
192.30.114.0/24256ARINUS10th Apr 2014
192.30.122.0/24256ARINUS16th Jun 2001
192.30.125.0/24256ARINUS10th Mar 1987
192.30.147.0/24256ARINUS11th May 1994
192.30.148.0/24256ARINUS22nd Jun 2001
192.30.188.0/23512ARINUS26th Jun 2014
192.30.191.0/24256ARINUS22nd Jul 1996
192.30.192.0/212kARINUS28th Aug 2012
192.30.200.0/24256ARINUS10th Mar 1987
192.30.206.0/24256ARINUS10th Mar 1987
192.30.207.0/24256ARINUS10th Mar 1987
192.30.246.0/24256ARINUS17th Apr 2014
192.30.248.0/24256ARINUS29th Jun 2001
192.30.44.0/24256ARINUS10th Mar 1987
192.30.46.0/23512ARINUS17th Sept 2013
192.30.48.0/23512ARINUS17th Sept 2013
192.30.50.0/24256ARINUS18th Aug 2000
192.30.53.0/24256ARINUS16th Jun 2001
192.30.54.0/23512ARINUS11th Jun 2014
192.30.61.0/24256ARINUS10th Mar 1987
192.30.92.0/24256ARINUS25th Feb 2004
192.30.93.0/24256ARINUS10th Mar 1987
192.30.94.0/24256ARINUS10th Mar 1987
192.31.1.0/24256ARINUS12th Mar 1987
192.31.105.0/24256ARINUS22nd Jun 1987
192.31.109.0/24256ARINUS22nd Apr 2014
192.31.111.0/24256ARINUS29th Jun 1987
192.31.113.0/24256ARINUS4th Dec 1987
192.31.115.0/24256ARINUS8th Jul 1987
192.31.126.0/23512ARINUS30th Jun 2014
192.31.144.0/24256ARINUS24th Apr 2014
192.31.145.0/24256ARINUS8th Jul 1987
192.31.148.0/24256ARINUS14th Jul 1987
192.31.149.0/24256ARINUS14th Jul 1987
192.31.150.0/24256ARINUS14th Jul 1987
192.31.151.0/24256ARINUS9th Nov 2020
192.31.152.0/24256ARINUS15th Jul 1987
192.31.154.0/24256ARINUS17th Jul 1987
192.31.155.0/24256ARINUS20th Jul 1987
192.31.159.0/24256ARINUS20th Jul 1987
192.31.162.0/24256ARINUS14th May 1990
192.31.164.0/24256ARINUS4th Aug 1987