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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

85,458 blocks match, ordered by prefix.

Allocated but unannounced blocks, 42001 to 42050 of 85458
PrefixAddressesRegistryCountryAllocated
2001:df6:6780::/4865.5k × /64APNICBD3rd Apr 2021
2001:df6:67c0::/4865.5k × /64APNICID8th Dec 2025
2001:df6:6800::/4865.5k × /64APNICCN5th Jun 2014
2001:df6:6840::/4865.5k × /64APNICBD8th Dec 2025
2001:df6:6900::/4865.5k × /64APNICIN4th Sept 2018
2001:df6:6940::/4865.5k × /64APNICIN8th Dec 2025
2001:df6:69c0::/4865.5k × /64APNICID8th Dec 2025
2001:df6:6a00::/4865.5k × /64APNICAU11th Nov 2016
2001:df6:6a40::/4865.5k × /64APNICID8th Dec 2025
2001:df6:6a80::/4865.5k × /64APNICMY6th Apr 2021
2001:df6:6ac0::/4865.5k × /64APNICPH8th Dec 2025
2001:df6:6bc0::/4865.5k × /64APNICID9th Dec 2025
2001:df6:6c0::/4865.5k × /64APNICBD24th Aug 2025
2001:df6:6c40::/4865.5k × /64APNICID9th Dec 2025
2001:df6:6c80::/4865.5k × /64APNICIN7th Apr 2021
2001:df6:6cc0::/4865.5k × /64APNICID9th Dec 2025
2001:df6:6d00::/4865.5k × /64APNICVN5th Sept 2018
2001:df6:6d80::/4865.5k × /64APNICBD7th Apr 2021
2001:df6:6dc0::/4865.5k × /64APNICIN9th Dec 2025
2001:df6:6e00::/4865.5k × /64APNICMY11th Nov 2016
2001:df6:6e40::/4865.5k × /64APNICBD11th Dec 2025
2001:df6:6ec0::/4865.5k × /64APNICBD11th Dec 2025
2001:df6:6f00::/4865.5k × /64APNICID5th Sept 2018
2001:df6:6f80::/4865.5k × /64APNICIN7th Apr 2021
2001:df6:7000::/4865.5k × /64APNICVN23rd Oct 2013
2001:df6:700::/4865.5k × /64APNICBD31st Jul 2018
2001:df6:7040::/4865.5k × /64APNICID12th Dec 2025
2001:df6:70c0::/4865.5k × /64APNICPH14th Dec 2025
2001:df6:7100::/4865.5k × /64APNICIN5th Sept 2018
2001:df6:7140::/4865.5k × /64APNICID15th Dec 2025
2001:df6:7180::/4865.5k × /64APNICAF8th Apr 2021
2001:df6:71c0::/4865.5k × /64APNICBD15th Dec 2025
2001:df6:7200::/4865.5k × /64APNICIN11th Nov 2016
2001:df6:7240::/4865.5k × /64APNICIN15th Dec 2025
2001:df6:72c0::/4865.5k × /64APNICID16th Dec 2025
2001:df6:7300::/4865.5k × /64APNICIN5th Sept 2018
2001:df6:7380::/4865.5k × /64APNICID8th Apr 2021
2001:df6:7400::/4865.5k × /64APNICTH2nd Oct 2015
2001:df6:740::/4865.5k × /64APNICHK25th Aug 2025
2001:df6:7440::/4865.5k × /64APNICID16th Dec 2025
2001:df6:74c0::/4865.5k × /64APNICSG16th Dec 2025
2001:df6:7500::/4865.5k × /64APNICID6th Sept 2018
2001:df6:7540::/4865.5k × /64APNICPK17th Dec 2025
2001:df6:75c0::/4865.5k × /64APNICBD17th Dec 2025
2001:df6:7640::/4865.5k × /64APNICBD17th Dec 2025
2001:df6:7700::/4865.5k × /64APNICBD6th Sept 2018
2001:df6:7740::/4865.5k × /64APNICIN18th Dec 2025
2001:df6:77c0::/4865.5k × /64APNICVN19th Dec 2025
2001:df6:7880::/4865.5k × /64APNICBD12th Apr 2021
2001:df6:78c0::/4865.5k × /64APNICMY19th Dec 2025