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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 2501 to 2550 of 2578
PrefixAddressesRegistryCountryAllocated
91.213.216.0/24256RIPE NCCGB14th Sept 2009
91.213.42.0/24256RIPE NCCGB2nd Jul 2009
91.213.45.0/24256RIPE NCCGB6th Jul 2009
91.213.63.0/24256RIPE NCCGB14th Jul 2009
91.216.137.0/24256RIPE NCCGB28th May 2010
91.216.183.0/24256RIPE NCCGB11th Jun 2010
91.216.82.0/24256RIPE NCCGB12th May 2010
91.216.89.0/24256RIPE NCCGB14th May 2010
91.217.191.0/24256RIPE NCCGB21st Oct 2020
91.217.231.0/24256RIPE NCCGB17th Sept 2010
91.217.44.0/24256RIPE NCCGB14th Sept 2026
91.219.118.0/24256RIPE NCCGB6th May 2026
91.221.168.0/23512RIPE NCCGB9th Dec 2010
91.225.126.0/24256RIPE NCCGB9th Feb 2011
91.225.16.0/221kRIPE NCCGB26th Jan 2011
91.226.100.0/221kRIPE NCCGB19th Apr 2011
91.226.206.0/24256RIPE NCCGB8th Aug 2011
91.227.26.0/24256RIPE NCCGB3rd May 2011
91.228.78.0/23512RIPE NCCGB25th May 2011
91.229.166.0/24256RIPE NCCGB21st Jun 2011
91.229.180.0/24256RIPE NCCGB31st May 2023
91.229.187.0/24256RIPE NCCGB23rd Jun 2011
91.229.201.0/24256RIPE NCCGB18th Nov 2024
91.229.4.0/24256RIPE NCCGB10th Jun 2011
91.230.189.0/24256RIPE NCCGB18th Jul 2011
91.230.246.0/24256RIPE NCCGB28th Jul 2011
91.230.80.0/24256RIPE NCCGB14th Jan 2020
91.231.212.0/24256RIPE NCCGB19th Jun 2024
91.231.34.0/24256RIPE NCCGB28th Apr 2020
91.231.46.0/24256RIPE NCCGB29th Aug 2011
91.232.148.0/23512RIPE NCCGB10th Sept 2012
91.232.153.0/24256RIPE NCCGB18th Nov 2011
91.233.124.0/24256RIPE NCCGB9th Dec 2011
91.233.16.0/24256RIPE NCCGB29th Nov 2011
91.233.81.0/24256RIPE NCCGB6th Dec 2011
91.234.18.0/24256RIPE NCCGB21st Dec 2011
91.234.201.0/24256RIPE NCCGB27th Jan 2012
91.235.118.0/24256RIPE NCCGB9th Feb 2012
91.235.2.0/24256RIPE NCCGB6th Dec 2019
91.235.205.0/24256RIPE NCCGB24th May 2023
91.236.152.0/24256RIPE NCCGB9th Mar 2012
91.236.17.0/24256RIPE NCCGB24th Feb 2012
91.236.206.0/24256RIPE NCCGB14th Mar 2012
91.237.8.0/221kRIPE NCCGB16th Mar 2012
91.239.62.0/24256RIPE NCCGB14th May 2012
91.239.91.0/24256RIPE NCCGB16th May 2012
91.240.0.0/24256RIPE NCCGB8th Aug 2012
91.240.178.0/24256RIPE NCCGB4th Jul 2012
91.240.192.0/24256RIPE NCCGB5th Jul 2012
91.240.221.0/24256RIPE NCCGB5th Jul 2012