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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

27,021 blocks match, ordered by prefix.

Allocated but unannounced blocks, 9951 to 10000 of 27021
PrefixAddressesRegistryCountryAllocated
198.17.122.0/24256ARINUS23rd Dec 1992
198.17.123.0/24256ARINUS23rd Dec 1992
198.17.125.0/24256ARINUS23rd Dec 1992
198.17.129.0/24256ARINUS23rd Dec 1992
198.17.134.0/24256ARINUS28th Dec 1992
198.17.135.0/24256ARINUS29th Dec 1992
198.17.136.0/24256ARINUS29th Dec 1992
198.17.137.0/24256ARINUS29th Dec 1992
198.17.138.0/24256ARINUS29th Dec 1992
198.17.141.0/24256ARINUS29th Dec 1992
198.17.142.0/24256ARINUS29th Dec 1992
198.17.143.0/24256ARINUS30th Dec 1992
198.17.146.0/24256ARINUS30th Dec 1992
198.17.148.0/24256ARINUS30th Dec 1992
198.17.149.0/24256ARINUS30th Dec 1992
198.17.150.0/24256ARINUS30th Dec 1992
198.17.151.0/24256ARINUS30th Dec 1992
198.17.152.0/24256ARINUS30th Dec 1992
198.17.153.0/24256ARINUS30th Dec 1992
198.17.157.0/24256ARINUS8th Jan 1993
198.17.158.0/24256ARINUS2nd Jul 2026
198.17.159.0/24256ARINUS7th Jul 2026
198.17.16.0/24256ARINUS3rd Dec 1992
198.17.161.0/24256ARINUS11th Jan 1993
198.17.162.0/24256ARINUS11th Jan 1993
198.17.163.0/24256ARINUS11th Jan 1993
198.17.165.0/24256ARINUS11th Jan 1993
198.17.166.0/24256ARINUS11th Jan 1993
198.17.167.0/24256ARINUS11th Jan 1993
198.17.17.0/24256ARINUS3rd Dec 1992
198.17.172.0/24256ARINUS12th Jan 1993
198.17.173.0/24256ARINUS12th Jan 1993
198.17.174.0/24256ARINUS12th Jan 1993
198.17.176.0/24256ARINUS12th Jan 1993
198.17.177.0/24256ARINUS12th Jan 1993
198.17.178.0/24256ARINUS25th Apr 2013
198.17.18.0/24256ARINUS3rd Dec 1992
198.17.197.0/24256ARINUS13th Jan 1993
198.17.198.0/24256ARINUS13th Jan 1993
198.17.2.0/24256ARINUS1st Dec 1992
198.17.20.0/221kARINUS31st Oct 2012
198.17.202.0/24256ARINUS13th Jan 1993
198.17.203.0/24256ARINUS13th Jan 1993
198.17.204.0/24256ARINUS13th Jan 1993
198.17.205.0/24256ARINUS14th Jan 1993
198.17.206.0/24256ARINUS14th Jan 1993
198.17.209.0/24256ARINUS15th Jan 1993
198.17.214.0/24256ARINUS21st Jan 1993
198.17.217.0/24256ARINUS21st Jan 1993
198.17.218.0/24256ARINUS7th Jul 2026