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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

2,628 blocks match, ordered by prefix.

Allocated but unannounced blocks, 1251 to 1300 of 2628
PrefixAddressesRegistryCountryAllocated
2001:7f8:a2::/4865.5k × /64RIPE NCCGB17th May 2016
2001:7f8:aa::/4865.5k × /64RIPE NCCGB31st Aug 2026
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
2001:df0:22c0::/4865.5k × /64APNICGB2nd Dec 2021
2001:df4:3280::/4865.5k × /64APNICGB13th Jul 2020
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
203.8.96.0/212kAPNICGB15th Sept 1994
204.137.24.0/23512RIPE NCCGB29th Aug 1994
204.138.27.0/24256ARINGB30th Aug 1994
204.231.232.0/24256ARINGB21st Apr 1995
204.231.253.0/24256ARINGB4th May 1995
204.27.179.0/24256ARINGB20th Feb 1997
204.62.218.0/24256RIPE NCCGB10th Aug 1994
204.79.134.0/24256ARINGB14th Dec 1994
204.79.194.0/24256ARINGB15th Dec 1994
204.79.198.0/24256ARINGB15th Dec 1994
204.79.207.0/24256ARINGB19th Dec 1994
204.79.211.0/24256ARINGB19th Dec 1994
204.79.231.0/24256ARINGB19th Dec 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
206.123.0.0/24256ARINGB10th Feb 2011
206.123.30.0/24256ARINGB13th Dec 2012
206.130.2.0/23512ARINGB17th Aug 2011
206.130.61.0/24256ARINGB10th Feb 2011
206.196.125.0/24256RIPE NCCGB19th Jul 1995
206.197.208.0/24256ARINGB10th Feb 2011
206.245.208.0/221kRIPE NCCGB10th Apr 1996
206.245.216.0/212kRIPE NCCGB10th Apr 1996
206.245.224.0/198.2kRIPE NCCGB10th Apr 1996
206.53.138.0/24256ARINGB11th Feb 2015
207.207.206.0/24256RIPE NCCGB14th Oct 1996
207.207.222.0/24256RIPE NCCGB14th Oct 1996
207.229.64.0/24256RIPE NCCGB30th Dec 1996
208.116.3.0/24256RIPE NCCGB19th Apr 2006
208.116.4.0/24256RIPE NCCGB19th Apr 2006
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