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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

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Countries with the most unannounced blocks, largest first.

Unannounced blocks

85,075 blocks match, ordered by prefix.

Allocated but unannounced blocks, 10951 to 11000 of 85075
PrefixAddressesRegistryCountryAllocated
172.102.0.0/221kARINVG11th Mar 2019
172.102.128.0/204.1kARINUS22nd Jun 2015
172.106.0.0/15131kARINUS6th Dec 2023
172.110.128.0/24256ARINUS16th Apr 2021
172.110.130.0/24256ARINUS5th Apr 2021
172.110.131.0/24256ARINUS30th Apr 2021
172.110.184.0/24256ARINUS2nd Apr 2021
172.110.48.0/221kARINUS24th Jun 2015
172.110.52.0/221kARINUS24th Jun 2015
172.111.0.0/221kARINUS8th Jul 2021
172.111.25.0/24256ARINUS13th Jul 2021
172.111.40.0/221kARINUS7th Jul 2021
172.111.55.0/24256ARINUS19th Jul 2021
172.255.212.0/23512ARINUS13th Mar 2013
172.255.214.0/23512APNICAU13th Mar 2013
172.255.216.0/212kARINUS13th Mar 2013
172.72.0.0/14262kARINUS6th Apr 2015
172.81.40.0/221kARINUS1st Apr 2021
172.82.105.0/24256ARINUS8th Apr 2021
172.82.107.0/24256ARINUS1st Jul 2025
172.82.16.0/221kARINUS7th Apr 2021
172.82.21.0/24256ARINUS8th Apr 2021
172.82.34.0/24256ARINUS6th Apr 2021
172.82.40.0/221kARINCA9th Apr 2021
172.82.56.0/221kARINUS6th Apr 2021
172.82.69.0/24256ARINUS2nd Jun 2021
172.82.92.0/221kARINUS8th Apr 2021
172.83.1.0/24256ARINUS13th Jan 2018
172.83.124.0/24256ARINUS12th Feb 2018
172.83.125.0/24256ARINUS29th Jan 2018
172.83.146.0/24256ARINUS19th Jan 2018
172.83.200.0/24256ARINUS18th Jan 2018
172.83.203.0/24256ARINUS5th Feb 2018
172.83.207.0/24256ARINUS7th Apr 2020
172.83.250.0/24256ARINUS3rd Apr 2025
172.83.51.0/24256ARINUS17th Jan 2018
172.83.56.0/221kARINCA18th Jan 2018
172.84.129.0/24256ARINUS6th Mar 2018
172.84.146.0/23512ARINUS13th Feb 2018
172.84.154.0/24256ARINUS14th Mar 2018
172.84.156.0/24256ARINUS22nd Feb 2018
172.84.159.0/24256ARINUS17th Jan 2018
172.85.64.0/212kARINUS20th May 2015
172.85.88.0/212kARINUS21st May 2015
172.86.160.0/204.1kARINUS1st Jun 2015
172.87.231.0/24256ARINUS1st Jul 2025
172.87.240.0/204.1kARINUS29th Nov 2017
172.93.80.0/204.1kARINCA25th Jun 2015
172.96.130.0/23512ARINUS1st May 2018
172.96.36.0/23512ARINUS14th Mar 2025