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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

27,001 blocks match, ordered by prefix.

Allocated but unannounced blocks, 3751 to 3800 of 27001
PrefixAddressesRegistryCountryAllocated
192.12.225.0/24256ARINUS30th Apr 1990
192.12.226.0/23512ARINUS30th Apr 1990
192.12.228.0/24256ARINUS30th Apr 1990
192.12.229.0/24256ARINUS2nd May 1990
192.12.23.0/24256ARINUS7th Mar 2014
192.12.230.0/24256ARINUS4th May 1990
192.12.233.0/24256ARINUS14th May 1990
192.12.237.0/24256ARINUS5th Mar 1986
192.12.239.0/24256ARINUS11th Mar 1986
192.12.24.0/24256ARINUS8th Oct 1984
192.12.243.0/24256ARINUS11th Mar 1986
192.12.246.0/24256ARINUS11th Mar 1986
192.12.248.0/24256ARINUS18th Dec 1987
192.12.249.0/24256ARINUS18th Dec 1987
192.12.25.0/24256ARINUS8th Oct 1984
192.12.251.0/24256ARINUS18th Jan 1988
192.12.252.0/24256ARINUS14th Mar 1986
192.12.253.0/24256ARINUS14th Mar 1986
192.12.254.0/24256ARINUS14th Mar 1986
192.12.255.0/24256ARINUS14th Mar 1986
192.12.27.0/24256ARINUS18th Oct 1984
192.12.3.0/24256ARINUS11th Jun 1984
192.12.36.0/221kARINUS9th Jan 1985
192.12.4.0/24256ARINUS11th Jun 1984
192.12.42.0/24256ARINUS9th Jan 1985
192.12.44.0/24256ARINUS29th Jan 1985
192.12.45.0/24256ARINUS13th Aug 2026
192.12.48.0/24256ARINUS28th Feb 1985
192.12.49.0/24256ARINUS28th Feb 1985
192.12.50.0/24256ARINUS28th Feb 1985
192.12.53.0/24256ARINUS22nd Mar 1985
192.12.56.0/24256ARINUS9th Apr 1985
192.12.57.0/24256ARINUS11th Apr 1985
192.12.58.0/24256ARINUS11th Apr 1985
192.12.59.0/24256ARINUS11th Apr 1985
192.12.60.0/24256ARINUS11th Apr 1985
192.12.61.0/24256ARINUS11th Apr 1985
192.12.64.0/24256ARINUS22nd Apr 1985
192.12.74.0/24256ARINUS7th Jun 1985
192.12.75.0/24256ARINUS24th Jun 1985
192.12.93.0/24256ARINUS13th Nov 1987
192.12.97.0/24256ARINUS1st Nov 1989
192.120.1.0/24256ARINUS2nd Aug 1991
192.120.104.0/23512ARINUS2nd Aug 1991
192.120.106.0/23512ARINUS2nd Aug 1991
192.120.108.0/221kARINUS2nd Aug 1991
192.120.112.0/212kARINUS2nd Aug 1991
192.120.120.0/24256ARINUS2nd Aug 1991
192.120.121.0/24256ARINUS2nd Aug 1991
192.120.122.0/23512ARINUS2nd Aug 1991