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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 251 to 300 of 3775
PrefixAddressesRegistryCountryAllocated
192.101.150.0/23512ARINCA19th Nov 2015
192.101.99.0/24256ARINCA27th Jun 1991
192.104.38.0/24256ARINCA28th Mar 2018
192.111.255.0/24256ARINCA1st Jul 2025
192.111.90.0/23512ARINCA17th Jan 2020
192.119.160.0/212kARINCA5th Aug 2026
192.12.129.0/24256ARINCA21st Oct 1985
192.12.215.0/24256ARINCA2nd May 1990
192.12.41.0/24256ARINCA4th Sept 2019
192.12.62.0/24256ARINCA11th Apr 1985
192.12.98.0/24256ARINCA11th Dec 1987
192.124.30.0/24256ARINCA2nd Apr 2015
192.131.94.0/24256ARINCA30th Oct 1991
192.132.19.0/24256ARINCA29th Mar 1992
192.132.241.0/24256ARINCA18th Nov 1991
192.132.60.0/24256ARINCA12th Nov 1991
192.133.49.0/24256ARINCA2nd Apr 2026
192.135.40.0/24256ARINCA21st Nov 1991
192.135.41.0/24256ARINCA21st Nov 1991
192.135.42.0/24256ARINCA21st Nov 1991
192.135.43.0/24256ARINCA21st Nov 1991
192.135.48.0/24256ARINCA21st Nov 1991
192.135.77.0/24256ARINCA5th May 1992
192.135.83.0/24256ARINCA18th Dec 1991
192.136.114.0/23512ARINCA13th Jan 1992
192.139.1.0/24256ARINCA10th Jan 1992
192.139.112.0/23512ARINCA13th May 1992
192.139.115.0/24256ARINCA4th May 1992
192.139.124.0/24256ARINCA14th May 1992
192.139.125.0/24256ARINCA24th Jul 1995
192.139.130.0/24256ARINCA26th May 1992
192.139.138.0/24256ARINCA29th May 1992
192.139.14.0/24256ARINCA28th Jan 1992
192.139.142.0/24256ARINCA17th Jun 1992
192.139.143.0/24256ARINCA22nd Jun 1992
192.139.144.0/24256ARINCA23rd Jun 1992
192.139.146.0/24256ARINCA23rd Jun 1992
192.139.151.0/24256ARINCA23rd Jul 1992
192.139.165.0/24256ARINCA5th Feb 2024
192.139.176.0/212kARINCA13th Mar 2026
192.139.186.0/24256ARINCA21st Oct 1992
192.139.197.0/24256ARINCA10th Aug 1992
192.139.199.0/24256ARINCA10th Aug 1992
192.139.2.0/24256ARINCA10th Jan 1992
192.139.200.0/24256ARINCA30th Dec 1992
192.139.201.0/24256ARINCA2nd Dec 1992
192.139.203.0/24256ARINCA2nd Dec 1992
192.139.204.0/24256ARINCA2nd Dec 1992
192.139.206.0/24256ARINCA12th Aug 1992
192.139.207.0/24256ARINCA12th Aug 1992