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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 601 to 650 of 3775
PrefixAddressesRegistryCountryAllocated
192.245.183.0/24256ARINCA18th Nov 1992
192.245.228.0/24256ARINCA27th Nov 1992
192.245.24.0/24256ARINCA27th Oct 1992
192.251.166.0/24256ARINCA7th Dec 1992
192.251.196.0/24256ARINCA7th Jan 1993
192.251.231.0/24256ARINCA29th Jan 1993
192.251.29.0/24256ARINCA18th Nov 1992
192.251.30.0/24256ARINCA18th Nov 1992
192.251.52.0/24256ARINCA24th Nov 1992
192.251.53.0/24256ARINCA24th Nov 1992
192.251.54.0/24256ARINCA24th Nov 1992
192.251.55.0/24256ARINCA24th Nov 1992
192.251.91.0/24256ARINCA25th Nov 1992
192.26.211.0/24256ARINCA4th Nov 1990
192.30.142.0/24256ARINCA10th Mar 1987
192.30.149.0/24256ARINCA10th Mar 1987
192.30.52.0/24256ARINCA22nd Sept 2015
192.31.52.0/221kARINCA15th Nov 2012
192.31.6.0/24256ARINCA13th Mar 1987
192.34.216.0/212kARINCA30th Nov 2012
192.35.144.0/24256ARINCA14th Apr 1988
192.40.217.0/24256ARINCA7th Jul 1992
192.40.254.0/24256ARINCA7th Jan 1994
192.41.201.0/24256ARINCA22nd Jun 1988
192.42.202.0/24256ARINCA25th Oct 1988
192.42.203.0/24256ARINCA25th Oct 1988
192.42.204.0/24256ARINCA25th Oct 1988
192.42.206.0/24256ARINCA25th Oct 1988
192.42.246.0/24256ARINCA27th Jun 2024
192.42.48.0/24256ARINCA1st Jul 2026
192.42.54.0/24256ARINCA17th Aug 1988
192.42.68.0/24256ARINCA26th Aug 1988
192.42.90.0/24256ARINCA9th Sept 1988
192.43.190.0/24256ARINCA28th Jul 2014
192.46.128.0/204.1kARINCA20th Dec 1988
192.48.141.0/24256ARINCA22nd Feb 1989
192.48.234.0/24256ARINCA8th Dec 1997
192.5.144.0/24256ARINCA19th Mar 1986
192.5.204.0/24256ARINCA15th May 1986
192.5.205.0/24256ARINCA22nd May 1986
192.5.96.0/24256ARINCA19th Jul 1984
192.52.239.0/24256ARINCA17th May 1989
192.54.121.0/24256ARINCA5th Jun 1989
192.55.130.0/24256ARINCA9th Sept 2014
192.55.194.0/24256ARINCA15th Aug 1989
192.55.206.0/24256ARINCA22nd Aug 1989
192.55.224.0/24256ARINCA31st Aug 1989
192.58.213.0/24256ARINCA19th Oct 1989
192.58.245.0/24256ARINCA25th Oct 1989
192.64.161.0/24256ARINCA3rd Oct 1989