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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

Browse by country

Countries with the most unannounced blocks, largest first.

Unannounced blocks in Russia

2,036 blocks match, ordered by prefix.

Allocated but unannounced blocks, 51 to 100 of 2036
PrefixAddressesRegistryCountryAllocated
155.212.224.0/212kRIPE NCCRU2nd Dec 1991
155.212.248.0/221kRIPE NCCRU2nd Dec 1991
157.186.0.0/1665.5kRIPE NCCRU7th Apr 2004
157.22.152.0/221kRIPE NCCRU14th Oct 1997
157.22.160.0/221kRIPE NCCRU14th Oct 1997
157.22.164.0/221kRIPE NCCRU14th Oct 1997
157.22.168.0/221kRIPE NCCRU14th Oct 1997
157.22.216.0/221kRIPE NCCRU14th Oct 1997
157.22.220.0/23512RIPE NCCRU14th Oct 1997
157.22.228.0/24256RIPE NCCRU14th Oct 1997
157.22.244.0/221kRIPE NCCRU14th Oct 1997
157.22.248.0/221kRIPE NCCRU14th Oct 1997
157.22.254.0/24256RIPE NCCRU14th Oct 1997
161.104.28.0/221kRIPE NCCRU24th Jun 1992
161.104.92.0/23512RIPE NCCRU24th Jun 1992
161.104.94.0/23512RIPE NCCRU24th Jun 1992
164.40.232.0/24256RIPE NCCRU6th May 2026
168.113.232.0/212kRIPE NCCRU24th Mar 1994
168.113.244.0/221kRIPE NCCRU24th Mar 1994
168.113.248.0/23512RIPE NCCRU24th Mar 1994
168.113.250.0/23512RIPE NCCRU24th Mar 1994
168.113.252.0/221kRIPE NCCRU24th Mar 1994
168.222.128.0/212kRIPE NCCRU12th Aug 1994
168.222.136.0/221kRIPE NCCRU12th Aug 1994
168.222.224.0/212kRIPE NCCRU12th Aug 1994
171.22.236.0/221kRIPE NCCRU1st Feb 2019
171.22.242.0/24256RIPE NCCRU10th Jan 2024
171.25.184.0/221kRIPE NCCRU13th 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
176.100.248.0/23512RIPE NCCRU30th Jan 2012
176.100.250.0/24256RIPE NCCRU30th Jan 2012
176.100.251.0/24256RIPE NCCRU30th Jan 2012
176.104.168.0/212kRIPE NCCRU29th Dec 2011
176.109.112.0/204.1kRIPE NCCRU21st Feb 2012
176.115.112.0/221kRIPE NCCRU24th Apr 2012
176.115.116.0/221kRIPE NCCRU24th Apr 2012
176.117.0.0/212kRIPE NCCRU11th May 2012
176.120.76.0/221kRIPE NCCRU20th Jun 2012
176.120.80.0/221kRIPE NCCRU20th Jun 2012
176.120.88.0/212kRIPE NCCRU20th Jun 2012
176.122.17.0/24256RIPE NCCRU9th Jul 2012
176.122.31.0/24256RIPE NCCRU9th Jul 2012
176.123.188.0/221kRIPE NCCRU30th Jul 2012
176.124.0.0/204.1kRIPE NCCRU3rd Sept 2012
176.53.224.0/198.2kRIPE NCCRU30th May 2011
176.97.193.0/24256RIPE NCCRU22nd Oct 2021
178.130.130.0/24256RIPE NCCRU15th Mar 2010
178.159.36.0/24256RIPE NCCRU25th Aug 2010