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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

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Countries with unannounced space registered through RIPE NCC, largest first.

Unannounced blocks registered through RIPE NCC

25,269 blocks match, ordered by prefix.

Allocated but unannounced blocks, 24001 to 24050 of 25269
PrefixAddressesRegistryCountryAllocated
91.193.115.0/24256RIPE NCCNL15th May 2020
91.193.144.0/221kRIPE NCCPL16th Apr 2007
91.193.20.0/221kRIPE NCCCH23rd Mar 2007
91.193.204.0/221kRIPE NCCUA3rd May 2007
91.193.25.0/24256RIPE NCCRU7th Aug 2023
91.193.36.0/221kRIPE NCCRU27th Mar 2007
91.193.72.0/24256RIPE NCCDE4th Jun 2012
91.193.75.0/24256RIPE NCCRS4th Jun 2012
91.193.76.0/221kRIPE NCCUA3rd Apr 2007
91.193.90.0/24256RIPE NCCCH7th Aug 2023
91.193.91.0/24256RIPE NCCFR7th Aug 2023
91.193.92.0/221kRIPE NCCES5th Apr 2007
91.194.114.0/23512RIPE NCCIL18th Jun 2007
91.194.148.0/24256RIPE NCCAT22nd Sept 2021
91.194.158.0/23512RIPE NCCGB26th Jun 2007
91.194.164.0/23512RIPE NCCRU27th Jun 2007
91.194.186.0/23512RIPE NCCSE5th Jul 2007
91.194.206.0/23512RIPE NCCRU10th Jul 2007
91.194.218.0/23512RIPE NCCNL16th Jul 2007
91.194.32.0/23512RIPE NCCUS24th May 2007
91.194.4.0/23512RIPE NCCES14th May 2007
91.194.40.0/23512RIPE NCCUA14th Sept 2009
91.194.42.0/23512RIPE NCCGB25th May 2007
91.194.55.0/24256RIPE NCCTR18th Apr 2018
91.194.6.0/24256RIPE NCCIR28th Jan 2026
91.194.64.0/23512RIPE NCCRU5th Jun 2007
91.194.94.0/23512RIPE NCCDK16th Apr 2008
91.195.104.0/23512RIPE NCCDE7th Sept 2007
91.195.110.0/24256RIPE NCCAM10th Sept 2007
91.195.111.0/24256RIPE NCCAM10th Sept 2007
91.195.148.0/23512RIPE NCCRU21st Sept 2007
91.195.160.0/23512RIPE NCCNL25th Sept 2007
91.195.166.0/23512RIPE NCCGB26th Sept 2007
91.195.174.0/23512RIPE NCCIE3rd Oct 2019
91.195.182.0/23512RIPE NCCGB2nd Oct 2007
91.195.186.0/23512RIPE NCCGB3rd Oct 2007
91.195.192.0/23512RIPE NCCGB4th Oct 2007
91.195.194.0/24256RIPE NCCRO8th Oct 2007
91.195.208.0/23512RIPE NCCIE3rd Oct 2019
91.195.236.0/23512RIPE NCCNL23rd Oct 2007
91.195.242.0/23512RIPE NCCDE25th Oct 2007
91.195.250.0/23512RIPE NCCPL29th Oct 2007
91.195.32.0/23512RIPE NCCSE14th Aug 2007
91.195.37.0/24256RIPE NCCIR30th Jan 2024
91.195.42.0/23512RIPE NCCPL21st Aug 2007
91.195.48.0/23512RIPE NCCDE23rd Aug 2007
91.195.6.0/23512RIPE NCCRO6th Aug 2007
91.195.82.0/23512RIPE NCCGB3rd Sept 2007
91.196.116.0/221kRIPE NCCGB11th Jun 2007
91.196.128.0/221kRIPE NCCES12th Jun 2007