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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 1051 to 1100 of 25269
PrefixAddressesRegistryCountryAllocated
171.25.178.0/24256RIPE NCCDE11th Apr 2012
171.25.179.0/24256RIPE NCCNL12th Jan 2012
171.25.184.0/221kRIPE NCCRU13th Jan 2012
171.25.191.0/24256RIPE NCCIT13th Jan 2012
171.25.212.0/221kRIPE NCCRU17th Jan 2012
171.25.244.0/221kRIPE NCCRU20th Jan 2012
171.25.252.0/221kRIPE NCCRU20th Jan 2012
171.28.0.0/15131kRIPE NCCGB9th Jan 1995
171.30.0.0/1665.5kRIPE NCCGB9th Jan 1995
171.33.0.0/1816.4kRIPE NCCCH10th Feb 1995
171.33.136.0/212kRIPE NCCCZ3rd Jul 2012
171.33.224.0/212kRIPE NCCNL3rd Jul 2012
173.209.0.0/198.2kRIPE NCCNL18th Sept 2009
173.255.148.0/24256RIPE NCCLU1st Feb 2010
173.255.149.0/24256RIPE NCCJE1st Feb 2010
173.255.150.0/24256RIPE NCCLU1st Feb 2010
173.255.151.0/24256RIPE NCCJE1st Feb 2010
176.10.89.0/24256RIPE NCCUS23rd Jan 2025
176.10.90.0/24256RIPE NCCCA23rd Jan 2025
176.10.94.0/24256RIPE NCCGB29th Jan 2025
176.100.200.0/212kRIPE NCCES31st Oct 2011
176.100.248.0/23512RIPE NCCRU30th Jan 2012
176.100.250.0/24256RIPE NCCRU30th Jan 2012
176.100.251.0/24256RIPE NCCRU30th Jan 2012
176.100.41.0/24256RIPE NCCBE1st Sept 2021
176.101.168.0/24256RIPE NCCDE24th Jun 2020
176.101.170.0/24256RIPE NCCNO25th Jun 2020
176.101.171.0/24256RIPE NCCIT25th Jun 2020
176.101.80.0/221kRIPE NCCPL9th Nov 2011
176.102.188.0/24256RIPE NCCPL29th Nov 2011
176.102.190.0/23512RIPE NCCPL29th Nov 2011
176.103.112.0/24256RIPE NCCUA14th Dec 2011
176.103.116.0/221kRIPE NCCUA14th Dec 2011
176.103.212.0/221kRIPE NCCUA20th Dec 2011
176.103.248.0/212kRIPE NCCIT23rd Dec 2011
176.104.168.0/212kRIPE NCCRU29th Dec 2011
176.105.244.0/24256RIPE NCCRO15th Aug 2022
176.105.245.0/24256RIPE NCCIR15th Aug 2022
176.106.136.0/212kRIPE NCCCZ19th Apr 2012
176.106.40.0/212kRIPE NCCPS11th Jan 2012
176.107.120.0/212kRIPE NCCCZ31st Jan 2012
176.109.112.0/204.1kRIPE NCCRU21st Feb 2012
176.109.56.0/212kRIPE NCCSK23rd Feb 2012
176.110.100.0/24256RIPE NCCSA25th Jul 2012
176.110.109.0/24256RIPE NCCDE21st Apr 2021
176.111.33.0/24256RIPE NCCUA5th Mar 2012
176.111.45.0/24256RIPE NCCUA5th Mar 2012
176.111.50.0/24256RIPE NCCUA5th Mar 2012
176.113.160.0/221kRIPE NCCUA4th Apr 2012
176.113.45.0/24256RIPE NCCGB3rd Jul 2020