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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 6751 to 6800 of 27014
PrefixAddressesRegistryCountryAllocated
192.25.54.0/24256ARINUS8th Aug 1986
192.25.64.0/221kARINUS8th Aug 1986
192.25.68.0/23512ARINUS28th Feb 2001
192.25.70.0/24256ARINUS28th Feb 2001
192.25.71.0/24256ARINUS8th Aug 1986
192.25.72.0/23512ARINUS8th Aug 1986
192.25.74.0/24256ARINUS2nd Mar 2000
192.25.75.0/24256ARINUS8th Aug 1986
192.25.76.0/23512ARINUS8th Aug 1986
192.25.79.0/24256ARINUS8th Aug 1986
192.25.80.0/24256ARINUS8th Aug 1986
192.25.81.0/24256ARINUS2nd Mar 2000
192.25.82.0/23512ARINUS2nd Mar 2000
192.25.84.0/221kARINUS2nd Mar 2000
192.25.96.0/221kARINUS2nd Mar 2000
192.250.208.0/204.1kARINUS4th Jun 2013
192.251.10.0/24256ARINUS9th Nov 1992
192.251.100.0/24256ARINUS27th Nov 1992
192.251.106.0/24256ARINUS6th Oct 2025
192.251.107.0/24256ARINUS27th Nov 1992
192.251.108.0/24256ARINUS9th Apr 2026
192.251.11.0/24256ARINUS9th Nov 1992
192.251.110.0/24256ARINUS27th Nov 1992
192.251.112.0/24256ARINUS27th Nov 1992
192.251.113.0/24256ARINUS27th Nov 1992
192.251.114.0/24256ARINUS27th Nov 1992
192.251.115.0/24256ARINUS27th Nov 1992
192.251.116.0/24256ARINUS27th Nov 1992
192.251.117.0/24256ARINUS27th Nov 1992
192.251.118.0/24256ARINUS27th Nov 1992
192.251.119.0/24256ARINUS27th Nov 1992
192.251.12.0/24256ARINUS9th Nov 1992
192.251.120.0/24256ARINUS27th Nov 1992
192.251.121.0/24256ARINUS27th Nov 1992
192.251.122.0/24256ARINUS27th Nov 1992
192.251.123.0/24256ARINUS27th Nov 1992
192.251.124.0/24256ARINUS27th Nov 1992
192.251.125.0/24256ARINUS27th Nov 1992
192.251.126.0/24256ARINUS27th Nov 1992
192.251.127.0/24256ARINUS2nd Apr 2026
192.251.129.0/24256ARINUS27th Nov 1992
192.251.130.0/24256ARINUS27th Nov 1992
192.251.131.0/24256ARINUS27th Nov 1992
192.251.132.0/221kARINUS30th Nov 1992
192.251.136.0/24256ARINUS30th Nov 1992
192.251.137.0/24256ARINUS3rd Dec 1992
192.251.138.0/24256ARINUS3rd Dec 1992
192.251.143.0/24256ARINUS2nd Jun 1995
192.251.144.0/24256ARINUS3rd Dec 1992
192.251.145.0/24256ARINUS3rd Dec 1992