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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

2,614 blocks match, ordered by prefix.

Allocated but unannounced blocks, 401 to 450 of 2614
PrefixAddressesRegistryCountryAllocated
192.107.4.0/24256RIPE NCCGB26th Apr 1991
192.107.5.0/24256RIPE NCCGB26th Apr 1991
192.111.88.0/24256RIPE NCCGB11th Jun 1991
192.112.100.0/24256RIPE NCCGB7th Aug 1991
192.112.49.0/24256RIPE NCCGB1st Jul 1991
192.112.98.0/24256RIPE NCCGB7th Aug 1991
192.12.1.0/24256RIPE NCCGB12th Nov 1987
192.12.231.0/24256RIPE NCCGB14th May 1990
192.12.99.0/24256RIPE NCCGB15th Dec 1987
192.122.1.0/24256RIPE NCCGB9th Aug 1991
192.122.128.0/23512RIPE NCCGB9th Aug 1991
192.122.130.0/24256RIPE NCCGB9th Aug 1991
192.122.141.0/24256RIPE NCCGB27th Aug 1991
192.122.142.0/23512RIPE NCCGB27th Aug 1991
192.122.144.0/23512RIPE NCCGB27th Aug 1991
192.122.146.0/24256RIPE NCCGB27th Aug 1991
192.122.151.0/24256RIPE NCCGB27th Aug 1991
192.122.152.0/212kRIPE NCCGB27th Aug 1991
192.122.16.0/204.1kRIPE NCCGB9th Aug 1991
192.122.160.0/212kRIPE NCCGB27th Aug 1991
192.122.168.0/23512RIPE NCCGB27th Aug 1991
192.122.170.0/24256RIPE NCCGB27th Aug 1991
192.122.2.0/23512RIPE NCCGB9th Aug 1991
192.122.214.0/24256RIPE NCCGB2nd Sept 1991
192.122.217.0/24256RIPE NCCGB3rd Sept 1991
192.122.218.0/23512RIPE NCCGB3rd Sept 1991
192.122.220.0/221kRIPE NCCGB3rd Sept 1991
192.122.224.0/212kRIPE NCCGB3rd Sept 1991
192.122.232.0/23512RIPE NCCGB3rd Sept 1991
192.122.234.0/24256RIPE NCCGB3rd Sept 1991
192.122.32.0/198.2kRIPE NCCGB9th Aug 1991
192.122.4.0/221kRIPE NCCGB9th Aug 1991
192.122.64.0/1816.4kRIPE NCCGB9th Aug 1991
192.122.8.0/212kRIPE NCCGB9th Aug 1991
192.129.84.0/24256RIPE NCCGB24th Sept 1991
192.131.108.0/24256RIPE NCCGB27th Dec 1991
192.131.79.0/24256RIPE NCCGB29th Oct 1991
192.131.89.0/24256RIPE NCCGB30th Oct 1991
192.132.239.0/24256RIPE NCCGB18th Nov 1991
192.132.9.0/24256RIPE NCCGB5th Nov 1991
192.132.99.0/24256RIPE NCCGB14th Nov 1991
192.133.131.0/24256RIPE NCCGB9th Dec 1991
192.133.58.0/24256RIPE NCCGB7th Nov 1991
192.135.234.0/24256RIPE NCCGB30th Dec 1991
192.135.52.0/24256RIPE NCCGB22nd Nov 1991
192.135.53.0/24256RIPE NCCGB22nd Nov 1991
192.135.66.0/24256RIPE NCCGB26th Nov 1991
192.135.68.0/24256RIPE NCCGB26th Nov 1991
192.136.154.0/24256RIPE NCCGB8th Feb 1992
192.136.155.0/24256RIPE NCCGB8th Feb 1992