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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 unannounced space registered through RIPE NCC, largest first.

Unannounced blocks registered through RIPE NCC

24,896 blocks match, ordered by prefix.

Allocated but unannounced blocks, 21451 to 21500 of 24896
PrefixAddressesRegistryCountryAllocated
31.14.42.0/24256RIPE NCCRO18th Apr 2011
31.14.49.0/24256RIPE NCCRO18th Apr 2011
31.14.50.0/23512RIPE NCCBE18th Apr 2011
31.14.64.0/24256RIPE NCCTR18th Apr 2011
31.170.120.0/212kRIPE NCCDE30th Mar 2011
31.171.208.0/24256RIPE NCCGE21st Jan 2026
31.171.209.0/24256RIPE NCCAM21st Jan 2026
31.176.0.0/1732.8kRIPE NCCTR4th Mar 2011
31.177.96.0/212kRIPE NCCNL14th Mar 2011
31.186.88.0/212kRIPE NCCNO24th Mar 2011
31.187.66.0/24256RIPE NCCDE25th Mar 2011
31.187.69.0/24256RIPE NCCDE25th Mar 2011
31.187.78.0/24256RIPE NCCDE25th Mar 2011
31.193.108.0/221kRIPE NCCDE27th Apr 2011
31.193.112.0/212kRIPE NCCIR27th Apr 2011
31.193.190.0/24256RIPE NCCSA19th Oct 2022
31.193.224.0/212kRIPE NCCES28th Apr 2011
31.207.48.0/221kRIPE NCCNL2nd May 2011
31.210.138.0/23512RIPE NCCRU4th May 2011
31.210.188.0/221kRIPE NCCIL4th May 2011
31.210.58.0/23512RIPE NCCTR4th May 2011
31.211.176.0/212kRIPE NCCDE9th May 2011
31.214.132.0/23512RIPE NCCIR6th May 2011
31.214.149.0/24256RIPE NCCDE6th May 2011
31.214.155.0/24256RIPE NCCES6th May 2011
31.214.200.0/23512RIPE NCCIR6th May 2011
31.220.12.0/23512RIPE NCCDE10th May 2011
31.220.128.0/212kRIPE NCCRO11th May 2011
31.220.147.0/24256RIPE NCCDE11th May 2011
31.220.36.0/221kRIPE NCCDE10th May 2011
31.220.8.0/221kRIPE NCCDE10th May 2011
31.222.230.0/24256RIPE NCCCA6th Oct 2021
31.222.231.0/24256RIPE NCCDE6th Oct 2021
31.222.238.0/24256RIPE NCCMD7th Oct 2021
31.222.251.0/24256RIPE NCCSC7th Oct 2021
31.222.254.0/24256RIPE NCCDE7th Oct 2021
31.222.40.0/212kRIPE NCCAL13th May 2011
31.223.176.0/212kRIPE NCCPS16th May 2011
31.24.160.0/212kRIPE NCCNL24th Feb 2011
31.24.254.0/24256RIPE NCCTR29th Jun 2022
31.24.84.0/24256RIPE NCCDE11th Jan 2022
31.25.232.0/23512RIPE NCCIR9th Mar 2011
31.25.80.0/212kRIPE NCCIE3rd Mar 2011
31.28.66.0/24256RIPE NCCGB23rd Feb 2011
31.28.74.0/24256RIPE NCCGB23rd Feb 2011
31.3.148.0/23512RIPE NCCDE3rd Aug 2011
31.31.32.0/212kRIPE NCCNL17th Mar 2011
31.31.92.0/221kRIPE NCCDE18th Mar 2011
31.40.215.0/24256RIPE NCCDE9th Nov 2018
31.40.224.0/221kRIPE NCCRO9th Nov 2018