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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 151 to 200 of 3775
PrefixAddressesRegistryCountryAllocated
149.112.74.0/24256ARINCA29th Sept 2023
149.112.80.0/24256ARINCA30th Nov 2023
149.248.168.0/23512ARINCA2nd Sept 2015
149.248.224.0/212kARINCA22nd Sept 2020
149.248.232.0/212kARINCA9th Jul 2020
149.248.240.0/212kARINCA26th Mar 2020
149.248.248.0/221kARINCA26th Feb 2020
149.248.252.0/23512ARINCA2nd Sept 2015
149.248.254.0/23512ARINCA17th Jan 2020
155.103.148.0/221kARINCA13th Jan 2026
155.103.164.0/221kARINCA13th Jan 2026
155.103.192.0/24256ARINCA13th Jan 2026
155.103.36.0/221kARINCA2nd Apr 2026
155.15.0.0/1665.5kARINCA30th Oct 1991
158.106.240.0/212kARINCA20th May 2015
158.128.0.0/1665.5kARINCA30th Mar 1992
158.163.0.0/1665.5kARINCA18th Mar 1992
158.51.0.0/23512ARINCA3rd Jan 2020
159.177.0.0/1665.5kARINCA12th May 1992
159.32.0.0/1665.5kARINCA2nd Mar 1992
159.55.0.0/1665.5kARINCA6th Mar 1992
161.129.30.0/24256ARINCA29th Mar 2018
161.129.96.0/198.2kARINCA29th Mar 2018
161.187.0.0/1665.5kARINCA15th Jan 1993
162.0.0.0/1732.8kARINCA14th Jan 2013
162.0.144.0/212kARINCA14th Jan 2013
162.0.248.0/212kARINCA14th Jan 2013
162.208.12.0/221kARINCA25th Mar 2013
162.208.60.0/221kARINCA1st Apr 2013
162.210.32.0/221kARINCA16th Apr 2013
162.212.64.0/212kARINCA16th May 2013
162.217.60.0/221kARINCA14th Apr 2017
162.218.32.0/212kARINCA31st Jul 2013
162.221.12.0/221kARINCA6th Sept 2013
162.247.168.0/221kARINCA24th Apr 2014
162.248.120.0/212kARINCA12th Nov 2013
162.254.172.0/221kARINCA2nd May 2014
162.254.40.0/221kARINCA27th Feb 2014
162.255.228.0/221kARINCA27th Jun 2014
163.123.217.0/24256ARINCA30th Sept 2020
163.182.164.0/24256ARINCA8th Jan 2020
165.140.107.0/24256ARINCA7th Oct 2021
165.140.142.0/24256ARINCA5th Oct 2021
167.11.0.0/1665.5kARINCA14th Apr 1993
167.253.31.0/24256ARINCA4th Apr 2024
167.253.4.0/221kARINCA9th Apr 2024
167.253.76.0/23512ARINCA10th Apr 2024
167.33.0.0/1665.5kARINCA25th Mar 1993
167.34.0.0/1665.5kARINCA25th Mar 1993
167.35.0.0/1665.5kARINCA25th Mar 1993