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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 351 to 400 of 2663
PrefixAddressesRegistryCountryAllocated
185.9.136.0/24256RIPE NCCGB8th Apr 2024
185.9.48.0/221kRIPE NCCGB6th Nov 2012
185.9.92.0/221kRIPE NCCGB7th Nov 2012
185.90.120.0/221kRIPE NCCGB5th Mar 2015
185.91.112.0/221kRIPE NCCGB12th Mar 2015
185.91.124.0/24256RIPE NCCGB22nd May 2023
185.93.168.0/221kRIPE NCCGB26th Mar 2015
185.96.48.0/221kRIPE NCCGB15th Apr 2015
185.96.60.0/221kRIPE NCCGB15th Apr 2015
185.97.152.0/221kRIPE NCCGB23rd Apr 2015
185.97.20.0/221kRIPE NCCGB21st Apr 2015
185.97.28.0/221kRIPE NCCGB21st Apr 2015
185.98.108.0/221kRIPE NCCGB29th Apr 2015
185.98.148.0/221kRIPE NCCGB30th Apr 2015
185.98.162.0/24256RIPE NCCGB17th Jan 2025
185.98.27.0/24256RIPE NCCGB23rd Jan 2026
185.98.44.0/221kRIPE NCCGB28th Apr 2015
185.99.84.0/221kRIPE NCCGB7th May 2015
187.41.0.0/1816.4kRIPE NCCGB20th Feb 2025
187.79.160.0/198.2kRIPE NCCGB13th Mar 2025
188.191.60.0/221kRIPE NCCGB18th Feb 2011
188.213.84.0/23512RIPE NCCGB8th May 2009
188.215.38.0/24256RIPE NCCGB8th May 2009
188.64.32.0/24256RIPE NCCGB13th Jul 2009
188.64.64.0/212kRIPE NCCGB15th Jul 2009
188.65.164.0/24256RIPE NCCGB19th Dec 2023
188.65.166.0/24256RIPE NCCGB28th Dec 2023
188.74.96.0/198.2kRIPE NCCGB5th Aug 2009
188.92.25.0/24256RIPE NCCGB9th Jan 2024
188.92.88.0/212kRIPE NCCGB24th Apr 2009
188.95.196.0/24256RIPE NCCGB17th Mar 2025
189.10.64.0/198.2kRIPE NCCGB13th Mar 2025
192.100.102.0/23512RIPE NCCGB12th Apr 1991
192.100.132.0/23512RIPE NCCGB12th Apr 1991
192.100.136.0/221kRIPE NCCGB12th Apr 1991
192.100.140.0/24256RIPE NCCGB12th Apr 1991
192.100.144.0/24256RIPE NCCGB16th Apr 1991
192.100.154.0/24256RIPE NCCGB22nd Apr 1991
192.100.52.0/24256RIPE NCCGB22nd Mar 1991
192.100.61.0/24256RIPE NCCGB26th Mar 1991
192.100.99.0/24256RIPE NCCGB12th Apr 1991
192.101.11.0/24256RIPE NCCGB28th Mar 1991
192.101.137.0/24256RIPE NCCGB27th Jun 1991
192.101.34.0/24256RIPE NCCGB18th Jun 1991
192.102.227.0/24256RIPE NCCGB11th Apr 1991
192.102.228.0/24256RIPE NCCGB11th Apr 1991
192.102.8.0/24256RIPE NCCGB8th Mar 1991
192.103.137.0/24256RIPE NCCGB12th Aug 1991
192.103.138.0/23512RIPE NCCGB12th Aug 1991
192.103.28.0/221kRIPE NCCGB8th Jul 1991