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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

2,663 blocks match, ordered by prefix.

Allocated but unannounced blocks, 501 to 550 of 2663
PrefixAddressesRegistryCountryAllocated
192.149.57.0/24256RIPE NCCGB27th Feb 1992
192.149.60.0/24256RIPE NCCGB2nd Mar 1992
192.150.106.0/24256RIPE NCCGB10th Mar 1992
192.150.140.0/24256RIPE NCCGB13th Mar 1992
192.150.177.0/24256RIPE NCCGB17th Mar 1992
192.150.178.0/24256RIPE NCCGB17th Mar 1992
192.150.179.0/24256RIPE NCCGB17th Mar 1992
192.150.180.0/24256RIPE NCCGB17th Mar 1992
192.150.181.0/24256RIPE NCCGB17th Mar 1992
192.150.182.0/24256RIPE NCCGB17th Mar 1992
192.150.183.0/24256RIPE NCCGB17th Mar 1992
192.150.198.0/24256RIPE NCCGB18th Mar 1992
192.150.208.0/24256RIPE NCCGB19th Mar 1992
192.150.227.0/24256RIPE NCCGB20th Mar 1992
192.150.228.0/24256RIPE NCCGB20th Mar 1992
192.150.229.0/24256RIPE NCCGB20th Mar 1992
192.150.230.0/24256RIPE NCCGB20th Mar 1992
192.150.231.0/24256RIPE NCCGB20th Mar 1992
192.150.232.0/24256RIPE NCCGB20th Mar 1992
192.150.233.0/24256RIPE NCCGB20th Mar 1992
192.150.248.0/24256RIPE NCCGB26th Mar 1992
192.150.89.0/24256RIPE NCCGB6th Mar 1992
192.152.112.0/24256RIPE NCCGB11th May 1992
192.152.122.0/24256RIPE NCCGB13th May 1992
192.152.156.0/24256RIPE NCCGB22nd May 1992
192.152.17.0/24256RIPE NCCGB31st Mar 1992
192.152.184.0/24256RIPE NCCGB1st Jun 1992
192.152.185.0/24256RIPE NCCGB1st Jun 1992
192.152.186.0/24256RIPE NCCGB1st Jun 1992
192.152.187.0/24256RIPE NCCGB1st Jun 1992
192.152.241.0/24256RIPE NCCGB11th Jun 1992
192.152.244.0/24256RIPE NCCGB12th Jun 1992
192.152.253.0/24256RIPE NCCGB12th Jun 1992
192.152.44.0/24256RIPE NCCGB3rd Apr 1992
192.152.48.0/24256RIPE NCCGB3rd Apr 1992
192.152.61.0/24256RIPE NCCGB8th Apr 1992
192.152.62.0/24256RIPE NCCGB8th Apr 1992
192.153.166.0/24256RIPE NCCGB3rd Apr 1992
192.153.189.0/24256RIPE NCCGB8th Apr 1992
192.153.2.0/24256RIPE NCCGB25th Apr 1997
192.153.3.0/24256RIPE NCCGB27th Mar 1992
192.156.167.0/24256RIPE NCCGB21st Apr 1992
192.156.239.0/24256RIPE NCCGB18th May 1992
192.157.169.0/24256RIPE NCCGB14th Feb 1995
192.157.170.0/24256RIPE NCCGB14th Feb 1995
192.157.172.0/24256RIPE NCCGB14th Feb 1995
192.157.174.0/24256RIPE NCCGB14th Feb 1995
192.157.176.0/24256RIPE NCCGB14th Feb 1995
192.157.187.0/24256RIPE NCCGB14th Feb 1995
192.158.110.0/23512RIPE NCCGB21st Apr 1992