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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

27,019 blocks match, ordered by prefix.

Allocated but unannounced blocks, 18801 to 18850 of 27019
PrefixAddressesRegistryCountryAllocated
206.220.60.0/221kARINUS10th Oct 1995
206.220.64.0/221kARINUS10th Oct 1995
206.220.8.0/221kARINUS28th Sept 1995
206.220.80.0/221kARINUS16th Oct 1995
206.220.92.0/221kARINUS18th Oct 1995
206.220.96.0/221kARINUS19th Oct 1995
206.221.0.0/204.1kARINUS25th Sept 1995
206.221.192.0/204.1kARINUS5th Mar 1996
206.221.64.0/204.1kARINUS10th Oct 1995
206.221.96.0/204.1kARINUS11th Oct 1995
206.222.128.0/198.2kARINUS10th May 1996
206.223.0.0/24256ARINUS6th Oct 1995
206.223.1.0/24256ARINUS6th Oct 1995
206.223.10.0/24256ARINUS9th Oct 1995
206.223.100.0/24256ARINUS14th Aug 1996
206.223.101.0/24256ARINUS13th Dec 1996
206.223.102.0/24256ARINUS3rd Feb 1997
206.223.104.0/221kARINUS4th Sept 1996
206.223.11.0/24256ARINUS9th Oct 1995
206.223.110.0/24256ARINUS9th Sept 1996
206.223.115.0/24256ARINUS20th Jul 1999
206.223.116.0/24256ARINUS25th May 2000
206.223.117.0/24256ARINUS30th May 2000
206.223.118.0/24256ARINUS15th Jun 2001
206.223.119.0/24256ARINUS4th Mar 2002
206.223.12.0/24256ARINUS10th Oct 1995
206.223.120.0/23512ARINUS4th Aug 2009
206.223.125.0/24256ARINUS22nd Oct 2012
206.223.128.0/24256ARINUS20th Jun 2025
206.223.13.0/24256ARINUS10th Oct 1995
206.223.131.0/24256ARINUS11th Mar 2003
206.223.137.0/24256ARINUS31st Oct 2002
206.223.138.0/24256ARINUS28th Jan 2004
206.223.14.0/24256ARINUS10th Oct 1995
206.223.140.0/24256ARINUS5th Aug 2004
206.223.141.0/24256ARINUS20th Aug 2004
206.223.142.0/24256ARINUS31st Aug 2004
206.223.15.0/24256ARINUS10th Oct 1995
206.223.16.0/24256ARINUS10th Oct 1995
206.223.19.0/24256ARINUS10th Oct 1995
206.223.2.0/24256ARINUS6th Oct 1995
206.223.20.0/24256ARINUS11th Oct 1995
206.223.22.0/24256ARINUS11th Oct 1995
206.223.23.0/24256ARINUS12th Oct 1995
206.223.24.0/24256ARINUS12th Oct 1995
206.223.26.0/24256ARINUS13th Oct 1995
206.223.27.0/24256ARINUS13th Oct 1995
206.223.28.0/24256ARINUS13th Oct 1995
206.223.29.0/24256ARINUS13th Oct 1995
206.223.3.0/24256ARINUS6th Oct 1995