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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

Unannounced blocks in United Kingdom

2,578 blocks match, ordered by prefix.

Allocated but unannounced blocks, 2451 to 2500 of 2578
PrefixAddressesRegistryCountryAllocated
89.36.255.0/24256RIPE NCCGB29th Nov 2005
89.37.94.0/24256RIPE NCCGB29th Nov 2005
89.41.27.0/24256RIPE NCCGB29th Nov 2005
89.42.154.0/24256RIPE NCCGB29th Nov 2005
89.42.155.0/24256RIPE NCCGB29th Nov 2005
89.46.123.0/24256RIPE NCCGB29th Nov 2005
91.103.136.0/24256RIPE NCCGB12th Jan 2024
91.105.224.0/212kRIPE NCCGB20th Jun 2012
91.108.160.0/212kRIPE NCCGB15th Jun 2012
91.132.32.0/221kRIPE NCCGB18th Dec 2018
91.192.16.0/221kRIPE NCCGB26th Jan 2007
91.192.232.0/221kRIPE NCCGB16th Mar 2007
91.193.108.0/23512RIPE NCCGB14th Sept 2009
91.194.150.0/23512RIPE NCCGB21st Jun 2006
91.194.158.0/23512RIPE NCCGB26th Jun 2007
91.194.42.0/23512RIPE NCCGB25th May 2007
91.195.166.0/23512RIPE NCCGB26th Sept 2007
91.195.182.0/23512RIPE NCCGB2nd Oct 2007
91.195.186.0/23512RIPE NCCGB3rd Oct 2007
91.195.192.0/23512RIPE NCCGB4th Oct 2007
91.195.82.0/23512RIPE NCCGB3rd Sept 2007
91.196.116.0/221kRIPE NCCGB11th Jun 2007
91.198.13.0/24256RIPE NCCGB22nd Jun 2007
91.198.9.0/24256RIPE NCCGB21st Jun 2007
91.199.130.0/24256RIPE NCCGB23rd Jan 2008
91.199.180.0/24256RIPE NCCGB11th Feb 2008
91.199.71.0/24256RIPE NCCGB13th Dec 2007
91.202.28.0/221kRIPE NCCGB19th Apr 2018
91.204.40.0/221kRIPE NCCGB26th Jun 2018
91.206.64.0/23512RIPE NCCGB3rd Oct 2019
91.207.204.0/24256RIPE NCCGB1st Jun 2021
91.207.38.0/23512RIPE NCCGB23rd Sept 2008
91.208.1.0/24256RIPE NCCGB25th Jun 2008
91.208.105.0/24256RIPE NCCGB4th Aug 2008
91.208.117.0/24256RIPE NCCGB8th Aug 2008
91.208.124.0/24256RIPE NCCGB11th Aug 2008
91.208.190.0/24256RIPE NCCGB13th Apr 2026
91.209.100.0/24256RIPE NCCGB7th Nov 2019
91.209.142.0/24256RIPE NCCGB8th Aug 2012
91.209.144.0/24256RIPE NCCGB20th Nov 2008
91.209.187.0/24256RIPE NCCGB10th Dec 2008
91.209.200.0/24256RIPE NCCGB15th Dec 2008
91.209.252.0/24256RIPE NCCGB6th Jan 2009
91.209.99.0/24256RIPE NCCGB7th Nov 2019
91.211.146.0/24256RIPE NCCGB8th Jan 2025
91.212.108.0/24256RIPE NCCGB31st Mar 2009
91.212.131.0/24256RIPE NCCGB8th Apr 2009
91.212.18.0/24256RIPE NCCGB29th Jan 2009
91.212.210.0/24256RIPE NCCGB15th May 2009
91.213.183.0/24256RIPE NCCGB25th Aug 2009