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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

26,955 blocks match, ordered by prefix.

Allocated but unannounced blocks, 5851 to 5900 of 26955
PrefixAddressesRegistryCountryAllocated
192.203.153.0/24256ARINUS16th Sept 1992
192.203.159.0/24256ARINUS17th Sept 1992
192.203.160.0/24256ARINUS17th Sept 1992
192.203.161.0/24256ARINUS17th Sept 1992
192.203.162.0/24256ARINUS17th Sept 1992
192.203.163.0/24256ARINUS17th Sept 1992
192.203.165.0/24256ARINUS18th Sept 1992
192.203.166.0/24256ARINUS18th Sept 1992
192.203.167.0/24256ARINUS18th Sept 1992
192.203.168.0/24256ARINUS18th Sept 1992
192.203.169.0/24256ARINUS18th Sept 1992
192.203.170.0/24256ARINUS18th Sept 1992
192.203.171.0/24256ARINUS18th Sept 1992
192.203.172.0/24256ARINUS18th Sept 1992
192.203.173.0/24256ARINUS18th Sept 1992
192.203.174.0/24256ARINUS18th Sept 1992
192.203.175.0/24256ARINUS18th Sept 1992
192.203.179.0/24256ARINUS21st Sept 1992
192.203.182.0/24256ARINUS21st Sept 1992
192.203.186.0/24256ARINUS21st Sept 1992
192.203.188.0/24256ARINUS25th Nov 1995
192.203.189.0/24256ARINUS21st Sept 1992
192.203.190.0/24256ARINUS21st Sept 1992
192.203.192.0/24256ARINUS21st Sept 1992
192.203.198.0/24256ARINUS23rd Sept 1992
192.203.202.0/24256ARINUS23rd Sept 1992
192.203.206.0/24256ARINUS30th Sept 1992
192.203.207.0/24256ARINUS30th Sept 1992
192.203.210.0/24256ARINUS30th Sept 1992
192.203.212.0/24256ARINUS9th Oct 1992
192.203.214.0/23512ARINUS9th Oct 1992
192.203.217.0/24256ARINUS22nd Oct 1992
192.203.220.0/24256ARINUS26th Oct 1992
192.203.221.0/24256ARINUS26th Oct 1992
192.203.224.0/24256ARINUS6th Jun 1995
192.203.225.0/24256ARINUS28th Oct 1992
192.203.226.0/24256ARINUS29th Oct 1992
192.203.229.0/24256ARINUS18th Nov 1992
192.203.231.0/24256ARINUS18th Sept 2015
192.203.234.0/24256ARINUS23rd Nov 1992
192.203.236.0/24256ARINUS23rd Nov 1992
192.203.238.0/24256ARINUS23rd Nov 1992
192.203.239.0/24256ARINUS29th Sept 2023
192.203.240.0/24256ARINUS23rd Nov 1992
192.203.242.0/24256ARINUS5th Oct 2026
192.203.243.0/24256ARINUS23rd Nov 1992
192.203.244.0/24256ARINUS23rd Nov 1992
192.203.245.0/24256ARINUS23rd Nov 1992
192.203.246.0/24256ARINUS15th Sept 2022
192.203.248.0/24256ARINUS24th Nov 1992