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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

3,819 blocks match, ordered by prefix.

Allocated but unannounced blocks, 3151 to 3200 of 3819
PrefixAddressesRegistryCountryAllocated
23.144.240.0/24256ARINCA25th Oct 2019
23.144.44.0/24256ARINCA20th Aug 2025
23.146.192.0/24256ARINCA23rd Oct 2017
23.146.193.0/24256ARINCA21st Feb 2019
23.146.194.0/24256ARINCA23rd Apr 2020
23.146.195.0/24256ARINCA29th Oct 2020
23.146.28.0/24256ARINCA24th Sept 2025
23.147.80.0/24256ARINCA13th Dec 2019
23.148.192.0/24256ARINCA27th Oct 2017
23.148.193.0/24256ARINCA2nd Jan 2019
23.148.194.0/24256ARINCA18th Mar 2020
23.148.195.0/24256ARINCA25th Sept 2020
23.149.152.0/24256ARINCA15th Mar 2023
23.149.40.0/24256ARINCA8th Mar 2023
23.150.124.0/24256ARINCA25th Nov 2025
23.151.140.0/24256ARINCA19th Dec 2025
23.155.56.0/24256ARINCA9th Jun 2023
23.156.160.0/24256ARINCA22nd Oct 2018
23.156.232.0/24256ARINCA28th Jun 2023
23.158.4.0/24256ARINCA11th May 2026
23.159.52.0/24256ARINCA29th May 2026
23.159.96.0/24256ARINCA20th Nov 2018
23.160.196.0/24256ARINCA29th Jun 2026
23.162.180.0/24256ARINCA19th Aug 2026
23.162.241.0/24256ARINCA13th Aug 2020
23.162.60.0/24256ARINCA7th Aug 2026
23.164.248.0/24256ARINCA2nd Nov 2023
23.165.80.0/24256ARINCA30th Sept 2020
23.167.168.0/24256ARINCA12th Dec 2023
23.170.16.0/24256ARINCA1st Dec 2020
23.170.32.0/24256ARINCA25th Jan 2019
23.170.33.0/24256ARINCA18th Nov 2019
23.172.208.0/24256ARINCA3rd Feb 2021
23.173.105.0/24256ARINCA17th Sept 2024
23.181.128.0/24256ARINCA19th Jun 2017
23.191.128.0/24256ARINCA10th Jul 2017
23.191.129.0/24256ARINCA7th Sept 2018
23.252.32.0/204.1kARINCA7th Nov 2013
24.244.112.0/204.1kARINCA22nd May 2008
24.38.144.0/204.1kARINCA15th Jun 2007
2400:b820::/324.3B × /64APNICCA20th Oct 2022
2402:5cc0::/324.3B × /64APNICCA18th Jan 2018
2407:4b80::/324.3B × /64APNICCA19th Sept 2016
2600:b800::/2868.7B × /64ARINCA17th Dec 2019
2602:2bd::/36268M × /64ARINCA5th Apr 2023
2602:2c0::/36268M × /64ARINCA7th Apr 2023
2602:2c4::/4016.8M × /64ARINCA19th Apr 2023
2602:2ca::/4016.8M × /64ARINCA24th Apr 2023
2602:2f1::/36268M × /64ARINCA13th Jun 2023
2602:800:d000::/441M × /64ARINCA6th Aug 2019