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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 3351 to 3400 of 3775
PrefixAddressesRegistryCountryAllocated
2604:23c0::/324.3B × /64ARINCA16th Mar 2017
2604:2460::/324.3B × /64ARINCA7th Oct 2025
2604:2580::/324.3B × /64ARINCA15th Oct 2012
2604:2840::/324.3B × /64ARINCA21st Mar 2017
2604:3b00::/324.3B × /64ARINCA4th Apr 2011
2604:3e40::/324.3B × /64ARINCA9th May 2017
2604:400::/324.3B × /64ARINCA16th Jun 2010
2604:4140::/324.3B × /64ARINCA19th May 2017
2604:4240::/36268M × /64ARINCA25th May 2017
2604:45c0::/324.3B × /64ARINCA7th Jun 2017
2604:4680::/324.3B × /64ARINCA14th Dec 2012
2604:48c0::/324.3B × /64ARINCA9th Jun 2017
2604:4a0::/324.3B × /64ARINCA24th Feb 2025
2604:5140::/324.3B × /64ARINCA3rd Jul 2017
2604:5280::/324.3B × /64ARINCA2nd Jan 2013
2604:5380::/324.3B × /64ARINCA2nd Jan 2013
2604:5580::/324.3B × /64ARINCA4th Jan 2013
2604:5880::/324.3B × /64ARINCA7th Jan 2013
2604:5a40::/324.3B × /64ARINCA25th Jul 2017
2604:5c40::/324.3B × /64ARINCA2nd Aug 2017
2604:6500::/324.3B × /64ARINCA11th Apr 2011
2604:6880::/324.3B × /64ARINCA8th Feb 2013
2604:6c80::/324.3B × /64ARINCA12th Feb 2013
2604:6e40::/324.3B × /64ARINCA21st Sept 2017
2604:75c0::/324.3B × /64ARINCA12th Oct 2017
2604:780::/324.3B × /64ARINCA10th Aug 2012
2604:78c0::/324.3B × /64ARINCA17th Oct 2017
2604:7980::/324.3B × /64ARINCA22nd Feb 2013
2604:7d40::/324.3B × /64ARINCA1st Nov 2017
2604:7f00::/324.3B × /64ARINCA22nd Apr 2011
2604:7f40::/324.3B × /64ARINCA10th Nov 2017
2604:8400::/324.3B × /64ARINCA29th Jun 2010
2604:840::/324.3B × /64ARINCA9th Jan 2017
2604:8600::/324.3B × /64ARINCA15th Nov 2010
2604:8980::/324.3B × /64ARINCA8th Mar 2013
2604:920::/324.3B × /64ARINCA18th Mar 2025
2604:a3c0::/324.3B × /64ARINCA16th Feb 2018
2604:a500::/324.3B × /64ARINCA29th Jan 2026
2604:a740::/324.3B × /64ARINCA23rd Feb 2018
2604:a8c0::/324.3B × /64ARINCA26th Feb 2018
2604:b280::/324.3B × /64ARINCA26th Apr 2013
2604:b60::/324.3B × /64ARINCA15th Apr 2025
2604:c2c0::/324.3B × /64ARINCA11th Apr 2018
2604:c440::/324.3B × /64ARINCA12th Apr 2018
2604:cec0::/324.3B × /64ARINCA10th May 2018
2604:d0::/324.3B × /64ARINCA16th Jan 2025
2604:d60::/324.3B × /64ARINCA21st Apr 2025
2604:dc0::/324.3B × /64ARINCA20th Jan 2017
2604:e80::/324.3B × /64ARINCA24th Aug 2012
2604:ea0::/324.3B × /64ARINCA29th Apr 2025