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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 unannounced space registered through ARIN, largest first.

Unannounced blocks in Canada

3,775 blocks match, ordered by prefix.

Allocated but unannounced blocks, 451 to 500 of 3775
PrefixAddressesRegistryCountryAllocated
192.197.155.0/24256ARINCA11th Dec 1992
192.197.164.0/24256ARINCA14th Jan 1993
192.197.165.0/24256ARINCA14th Jan 1993
192.197.166.0/24256ARINCA14th Jan 1993
192.197.168.0/24256ARINCA14th Jan 1993
192.197.169.0/24256ARINCA14th Jan 1993
192.197.170.0/24256ARINCA14th Jan 1993
192.197.171.0/24256ARINCA14th Jan 1993
192.197.173.0/24256ARINCA14th Jan 1993
192.197.175.0/24256ARINCA14th Jan 1993
192.197.176.0/24256ARINCA14th Jan 1993
192.197.177.0/24256ARINCA14th Jan 1993
192.197.179.0/24256ARINCA29th Jan 1993
192.197.182.0/24256ARINCA29th Jan 1993
192.197.185.0/24256ARINCA29th Jan 1993
192.197.186.0/24256ARINCA29th Jan 1993
192.197.187.0/24256ARINCA29th Jan 1993
192.197.188.0/24256ARINCA3rd Feb 1993
192.197.191.0/24256ARINCA29th Jan 1993
192.197.192.0/24256ARINCA29th Jan 1993
192.197.193.0/24256ARINCA29th Jan 1993
192.197.194.0/23512ARINCA16th Apr 1997
192.197.197.0/24256ARINCA26th Mar 1993
192.197.198.0/24256ARINCA30th Mar 1993
192.197.202.0/24256ARINCA30th Mar 1993
192.197.203.0/24256ARINCA30th Mar 1993
192.197.204.0/24256ARINCA30th Mar 1993
192.197.206.0/24256ARINCA4th Feb 1993
192.197.208.0/24256ARINCA19th Feb 1993
192.197.210.0/24256ARINCA19th Jul 1992
192.197.211.0/24256ARINCA19th Jul 1992
192.197.214.0/24256ARINCA19th Jul 1992
192.197.215.0/24256ARINCA19th Jul 1992
192.197.230.0/23512ARINCA15th Mar 1994
192.197.233.0/24256ARINCA2nd Dec 1992
192.197.234.0/24256ARINCA2nd Dec 1992
192.197.235.0/24256ARINCA2nd Dec 1992
192.197.236.0/24256ARINCA2nd Dec 1992
192.197.237.0/24256ARINCA2nd Dec 1992
192.197.238.0/24256ARINCA2nd Dec 1992
192.197.239.0/24256ARINCA9th Feb 1993
192.197.240.0/24256ARINCA9th Feb 1993
192.197.241.0/24256ARINCA9th Feb 1993
192.197.242.0/24256ARINCA9th Feb 1993
192.197.244.0/24256ARINCA3rd May 1993
192.197.246.0/24256ARINCA19th Jul 1992
192.197.248.0/24256ARINCA30th Nov 1993
192.197.249.0/24256ARINCA21st Apr 1993
192.197.252.0/24256ARINCA17th Mar 1993
192.197.254.0/24256ARINCA17th Mar 1993