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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 23951 to 24000 of 25269
PrefixAddressesRegistryCountryAllocated
91.123.112.0/204.1kRIPE NCCFR6th Mar 2007
91.123.240.0/204.1kRIPE NCCNL14th May 2007
91.123.58.0/23512RIPE NCCNO13th Dec 2006
91.132.0.0/221kRIPE NCCDE18th Dec 2018
91.132.101.0/24256RIPE NCCES16th Aug 2023
91.132.188.0/221kRIPE NCCRU20th Dec 2018
91.132.204.0/221kRIPE NCCCZ20th Dec 2018
91.132.226.0/24256RIPE NCCSC25th Jan 2022
91.132.232.0/221kRIPE NCCCZ21st Dec 2018
91.132.24.0/221kRIPE NCCES18th Dec 2018
91.132.248.0/221kRIPE NCCRO21st Dec 2018
91.132.32.0/221kRIPE NCCGB18th Dec 2018
91.142.131.0/24256RIPE NCCNL8th Apr 2010
91.142.137.0/24256RIPE NCCPL12th Apr 2010
91.142.176.0/204.1kRIPE NCCDE19th Oct 2006
91.142.192.0/204.1kRIPE NCCPL19th Oct 2006
91.143.240.0/204.1kRIPE NCCDE8th Nov 2006
91.145.128.0/1816.4kRIPE NCCPL3rd Oct 2006
91.146.104.0/212kRIPE NCCDE8th Sept 2011
91.146.192.0/1816.4kRIPE NCCPL24th Oct 2006
91.148.162.0/23512RIPE NCCBG13th Nov 2006
91.148.164.0/23512RIPE NCCBG13th Nov 2006
91.148.170.0/23512RIPE NCCBG13th Nov 2006
91.148.172.0/221kRIPE NCCBG13th Nov 2006
91.149.32.0/204.1kRIPE NCCSE14th Nov 2006
91.150.128.0/198.2kRIPE NCCPL19th Dec 2006
91.150.224.0/198.2kRIPE NCCDK17th Apr 2007
91.151.32.0/204.1kRIPE NCCRU5th Dec 2006
91.184.254.0/23512RIPE NCCRU16th Oct 2006
91.188.200.0/221kRIPE NCCAT20th Nov 2018
91.188.216.0/221kRIPE NCCTR20th Nov 2018
91.189.184.0/221kRIPE NCCAT25th Jun 2018
91.189.188.0/221kRIPE NCCBH25th Jun 2018
91.189.48.0/212kRIPE NCCRU11th Jan 2007
91.190.152.0/24256RIPE NCCHK20th Aug 2021
91.190.216.0/212kRIPE NCCLU12th Aug 2011
91.190.248.0/212kRIPE NCCDE11th Jan 2007
91.191.128.0/204.1kRIPE NCCSE28th Nov 2006
91.192.16.0/221kRIPE NCCGB26th Jan 2007
91.192.161.0/24256RIPE NCCLV13th Oct 2025
91.192.163.0/24256RIPE NCCDE13th Oct 2025
91.192.225.0/24256RIPE NCCPL15th Mar 2007
91.192.227.0/24256RIPE NCCMK15th Mar 2007
91.192.232.0/221kRIPE NCCGB16th Mar 2007
91.192.248.0/221kRIPE NCCPL20th Mar 2007
91.192.52.0/221kRIPE NCCDK6th Feb 2007
91.192.8.0/24256RIPE NCCGE11th May 2020
91.192.88.0/221kRIPE NCCPL13th Feb 2007
91.193.108.0/23512RIPE NCCGB14th Sept 2009
91.193.113.0/24256RIPE NCCDE15th May 2020