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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 1251 to 1300 of 2614
PrefixAddressesRegistryCountryAllocated
2001:7f8:a2::/4865.5k × /64RIPE NCCGB17th May 2016
2001:7f8:bc::/4865.5k × /64RIPE NCCGB2nd Nov 2017
2001:7f8:be::/4865.5k × /64RIPE NCCGB17th Nov 2017
2001:7f8:da::/4865.5k × /64RIPE NCCGB11th Mar 2020
2001:7f8:dc::/4865.5k × /64RIPE NCCGB26th Aug 2019
2001:7f8:ec::/4865.5k × /64RIPE NCCGB20th Feb 2026
2001:7f8:fc::/4865.5k × /64RIPE NCCGB20th Nov 2025
2001:958::/324.3B × /64RIPE NCCGB18th Oct 2002
201.51.64.0/1816.4kRIPE NCCGB6th Mar 2025
201.58.0.0/1816.4kRIPE NCCGB6th Mar 2025
203.12.218.0/24256RIPE NCCGB16th Feb 1995
204.137.24.0/23512RIPE NCCGB29th Aug 1994
204.62.218.0/24256RIPE NCCGB10th Aug 1994
205.178.176.0/24256RIPE NCCGB30th Mar 2021
205.210.40.0/24256RIPE NCCGB8th Apr 1995
205.220.225.0/24256RIPE NCCGB30th Oct 2018
205.220.226.0/24256RIPE NCCGB30th Oct 2018
207.207.206.0/24256RIPE NCCGB14th Oct 1996
207.207.222.0/24256RIPE NCCGB14th Oct 1996
207.229.64.0/24256RIPE NCCGB30th Dec 1996
209.100.0.0/1665.5kRIPE NCCGB13th Jun 1997
209.42.3.0/24256RIPE NCCGB14th Mar 1997
212.104.157.0/24256RIPE NCCGB29th Dec 1998
212.108.80.0/23512RIPE NCCGB15th Jan 1999
212.108.84.0/24256RIPE NCCGB15th Jan 1999
212.117.224.0/198.2kRIPE NCCGB9th Jun 2000
212.119.56.0/221kRIPE NCCGB6th Nov 2018
212.132.0.0/198.2kRIPE NCCGB19th Nov 1998
212.173.0.0/1732.8kRIPE NCCGB12th May 1999
212.21.104.0/212kRIPE NCCGB7th Sept 1999
212.21.112.0/212kRIPE NCCGB7th Sept 1999
212.21.120.0/221kRIPE NCCGB7th Sept 1999
212.21.124.0/23512RIPE NCCGB7th Sept 1999
212.21.127.0/24256RIPE NCCGB7th Sept 1999
212.225.0.0/198.2kRIPE NCCGB24th Aug 1998
212.225.32.0/198.2kRIPE NCCGB7th Apr 1999
212.225.64.0/1816.4kRIPE NCCGB7th Apr 1999
212.23.193.0/24256RIPE NCCGB4th Nov 2021
212.237.212.0/221kRIPE NCCGB25th Sept 1998
212.248.128.0/1732.8kRIPE NCCGB4th Dec 2000
212.32.28.0/24256RIPE NCCGB3rd Feb 1998
212.32.44.0/24256RIPE NCCGB3rd Feb 1998
212.43.160.0/198.2kRIPE NCCGB15th Apr 1999
212.46.134.0/23512RIPE NCCGB12th May 1998
212.46.136.0/23512RIPE NCCGB12th May 1998
212.46.146.0/23512RIPE NCCGB12th May 1998
212.46.150.0/23512RIPE NCCGB12th May 1998
212.46.152.0/221kRIPE NCCGB12th May 1998
212.46.156.0/23512RIPE NCCGB12th May 1998
212.47.34.0/24256RIPE NCCGB20th Jan 2026