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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 7201 to 7250 of 27014
PrefixAddressesRegistryCountryAllocated
192.40.116.0/24256ARINUS23rd May 1988
192.40.118.0/23512ARINUS9th Sept 2014
192.40.144.0/212kARINUS4th Dec 2012
192.40.152.0/23512ARINUS16th Sept 2014
192.40.155.0/24256ARINUS23rd May 1988
192.40.156.0/24256ARINUS2nd Mar 2004
192.40.159.0/24256ARINUS2nd Jul 1992
192.40.201.0/24256ARINUS28th Jan 1993
192.40.202.0/23512ARINUS26th Sept 2014
192.40.245.0/24256ARINUS2nd Mar 2004
192.40.248.0/24256ARINUS2nd Mar 2004
192.40.249.0/24256ARINUS23rd May 1988
192.40.25.0/24256ARINUS2nd Mar 2004
192.40.250.0/23512ARINUS7th Oct 2014
192.40.255.0/24256ARINUS25th Sept 2025
192.40.29.0/24256ARINUS11th Apr 1994
192.40.47.0/24256ARINUS23rd May 1988
192.40.48.0/24256ARINUS23rd May 1988
192.40.50.0/24256ARINUS29th Sept 2023
192.40.53.0/24256ARINUS23rd May 1988
192.40.54.0/24256ARINUS23rd May 1988
192.40.61.0/24256ARINUS2nd Mar 2004
192.40.62.0/23512ARINUS3rd Sept 2014
192.40.64.0/24256ARINUS25th Jun 2014
192.40.65.0/24256ARINUS13th Aug 1993
192.41.137.0/24256ARINUS8th Jun 1988
192.41.138.0/23512ARINUS17th Sept 2014
192.41.161.0/24256ARINUS7th Jul 1988
192.41.163.0/24256ARINUS7th Jul 1988
192.41.173.0/24256ARINUS13th Jun 1988
192.41.174.0/24256ARINUS13th Jun 1988
192.41.175.0/24256ARINUS13th Jun 1988
192.41.176.0/24256ARINUS13th Jun 1988
192.41.198.0/24256ARINUS20th Jun 1988
192.41.199.0/24256ARINUS21st Jun 1988
192.41.205.0/24256ARINUS23rd Jun 1988
192.41.212.0/24256ARINUS13th Sept 1988
192.41.213.0/24256ARINUS4th May 1993
192.41.215.0/24256ARINUS13th Jul 1988
192.41.217.0/24256ARINUS14th Jul 1988
192.41.219.0/24256ARINUS18th Jul 1988
192.41.224.0/24256ARINUS21st Jul 1988
192.41.225.0/24256ARINUS22nd Jul 1988
192.41.238.0/24256ARINUS26th Jul 1988
192.41.239.0/24256ARINUS26th Jul 1988
192.41.240.0/221kARINUS26th Jul 1988
192.41.244.0/24256ARINUS26th Jul 1988
192.41.247.0/24256ARINUS11th Nov 1988
192.42.10.0/23512ARINUS8th Aug 1988
192.42.108.0/24256ARINUS21st Sept 1988