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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

556 blocks match, ordered by prefix.

Allocated but unannounced blocks, 251 to 300 of 556
PrefixAddressesRegistryCountryAllocated
2001:67c:1b20::/4865.5k × /64RIPE NCCAT16th Feb 2018
2001:67c:1bb4::/4865.5k × /64RIPE NCCAT1st Dec 2016
2001:67c:1d0::/4865.5k × /64RIPE NCCAT9th Apr 2010
2001:67c:2078::/4865.5k × /64RIPE NCCAT4th Feb 2011
2001:67c:2090::/4865.5k × /64RIPE NCCAT8th Sept 2015
2001:67c:2180::/4865.5k × /64RIPE NCCAT28th Mar 2011
2001:67c:2260::/4865.5k × /64RIPE NCCAT12th May 2011
2001:67c:238c::/4865.5k × /64RIPE NCCAT13th Jul 2011
2001:67c:2398::/4865.5k × /64RIPE NCCAT26th May 2023
2001:67c:23c0::/4865.5k × /64RIPE NCCAT25th Jul 2011
2001:67c:2420::/4865.5k × /64RIPE NCCAT23rd Aug 2011
2001:67c:2478::/4865.5k × /64RIPE NCCAT13th Sept 2011
2001:67c:248::/4865.5k × /64RIPE NCCAT17th Jun 2010
2001:67c:2588::/4865.5k × /64RIPE NCCAT14th Nov 2011
2001:67c:25e0::/4865.5k × /64RIPE NCCAT29th Jul 2015
2001:67c:25fc::/4865.5k × /64RIPE NCCAT13th Dec 2011
2001:67c:260c::/4865.5k × /64RIPE NCCAT15th Dec 2011
2001:67c:264::/4865.5k × /64RIPE NCCAT5th Jul 2010
2001:67c:2694::/4865.5k × /64RIPE NCCAT20th Jul 2023
2001:67c:26e4::/4865.5k × /64RIPE NCCAT14th Feb 2012
2001:67c:2820::/4865.5k × /64RIPE NCCAT18th Apr 2012
2001:67c:28c0::/4865.5k × /64RIPE NCCAT16th May 2012
2001:67c:28c8::/4865.5k × /64RIPE NCCAT25th Feb 2021
2001:67c:2938::/4865.5k × /64RIPE NCCAT7th May 2026
2001:67c:2a38::/4865.5k × /64RIPE NCCAT4th Jul 2012
2001:67c:2aec::/4865.5k × /64RIPE NCCAT25th May 2016
2001:67c:2c28::/4865.5k × /64RIPE NCCAT28th Aug 2024
2001:67c:2d58::/4865.5k × /64RIPE NCCAT12th Jan 2015
2001:67c:2e10::/4865.5k × /64RIPE NCCAT25th Feb 2015
2001:67c:2e14::/4865.5k × /64RIPE NCCAT25th Feb 2015
2001:67c:2e2c::/4865.5k × /64RIPE NCCAT3rd Mar 2015
2001:67c:2e94::/4865.5k × /64RIPE NCCAT6th Jun 2025
2001:67c:2f34::/4865.5k × /64RIPE NCCAT16th Dec 2015
2001:67c:2fc8::/4865.5k × /64RIPE NCCAT28th Aug 2024
2001:67c:350::/4865.5k × /64RIPE NCCAT11th Nov 2010
2001:67c:668::/4865.5k × /64RIPE NCCAT27th Jun 2019
2001:67c:80c::/4865.5k × /64RIPE NCCAT4th Aug 2021
2001:67c:848::/4865.5k × /64RIPE NCCAT10th Sept 2021
2001:67c:84c::/4865.5k × /64RIPE NCCAT10th Sept 2021
2001:67c:850::/4865.5k × /64RIPE NCCAT10th Sept 2021
2001:67c:854::/4865.5k × /64RIPE NCCAT10th Sept 2021
2001:67c:858::/4865.5k × /64RIPE NCCAT10th Sept 2021
2001:67c:85c::/4865.5k × /64RIPE NCCAT10th Sept 2021
2001:67c:91c::/4865.5k × /64RIPE NCCAT1st Feb 2022
2001:67c:9e4::/4865.5k × /64RIPE NCCAT28th Apr 2022
2001:67c:a58::/4865.5k × /64RIPE NCCAT29th Jul 2022
2001:67c:c58::/4865.5k × /64RIPE NCCAT6th Apr 2023
2001:67c:d0::/4865.5k × /64RIPE NCCAT18th Dec 2009
2001:67c:dfc::/4865.5k × /64RIPE NCCAT19th Feb 2024
2001:67c:f08::/4865.5k × /64RIPE NCCAT28th Aug 2024