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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

511 blocks match, ordered by prefix.

Allocated but unannounced blocks, 151 to 200 of 511
PrefixAddressesRegistryCountryAllocated
2001:2b0::/35537M × /64APNICKR2nd Jan 2001
2001:2b8:2000::/35537M × /64APNICKR2nd Aug 2002
2001:2b8:4000::/341.1B × /64APNICKR2nd Aug 2002
2001:2b8:8000::/332.1B × /64APNICKR2nd Aug 2002
2001:2b8::/35537M × /64APNICKR15th Jan 2001
2001:2b9::/324.3B × /64APNICKR27th Jul 2017
2001:390:2000::/35537M × /64APNICKR2nd Aug 2002
2001:390:4000::/341.1B × /64APNICKR2nd Aug 2002
2001:390:8000::/332.1B × /64APNICKR2nd Aug 2002
2001:390::/35537M × /64APNICKR7th Feb 2002
2001:44d0::/2868.7B × /64APNICKR10th Nov 2005
2001:67c:2dd4::/4865.5k × /64RIPE NCCKR19th Aug 2025
2001:7fa:0:2::/641 × /64APNICKR17th Jan 2002
2001:7fa:8::/4865.5k × /64APNICKR29th Aug 2005
2001:df0:d580::/4865.5k × /64APNICKR8th Jul 2019
2001:df0:e540::/4865.5k × /64APNICKR28th Jun 2022
2001:df3:d9c0::/4865.5k × /64APNICKR28th May 2024
2001:df4:f780::/4865.5k × /64APNICKR1st Oct 2020
2001:df5:6800::/4865.5k × /64APNICKR29th Apr 2014
2001:df5:c7c0::/4865.5k × /64APNICKR24th Jun 2025
2001:df7:2940::/4865.5k × /64APNICKR26th Jun 2026
2001:e70::/324.3B × /64APNICKR17th Mar 2004
2001:e78::/324.3B × /64APNICKR17th Mar 2004
2001:e98::/324.3B × /64APNICKR29th Mar 2004
2001:ea0::/324.3B × /64APNICKR29th Mar 2004
2001:ea8::/324.3B × /64APNICKR31st Mar 2004
2001:eb8::/324.3B × /64APNICKR7th Apr 2004
2001:ee8::/324.3B × /64APNICKR17th May 2004
2001:ef0::/324.3B × /64APNICKR24th May 2004
2001:ef8::/324.3B × /64APNICKR24th May 2004
2001:f48::/324.3B × /64APNICKR6th Aug 2004
202.14.165.0/24256APNICKR4th Aug 1993
202.163.128.0/198.2kAPNICKR7th Mar 2006
202.179.148.0/221kAPNICKR19th May 2017
202.20.82.0/24256APNICKR26th Aug 1993
202.20.86.0/24256APNICKR26th Aug 1993
202.22.32.0/198.2kAPNICKR9th Aug 2006
202.30.125.0/24256APNICKR29th Feb 1996
202.30.126.0/23512APNICKR29th Feb 1996
202.30.35.0/24256APNICKR29th Feb 1996
202.30.39.0/24256APNICKR29th Feb 1996
202.30.50.0/23512APNICKR29th Feb 1996
202.30.52.0/23512APNICKR29th Feb 1996
202.30.56.0/23512APNICKR29th Feb 1996
202.31.154.0/24256APNICKR29th Feb 1996
202.31.155.0/24256APNICKR29th Feb 1996
202.31.156.0/221kAPNICKR29th Feb 1996
202.31.160.0/204.1kAPNICKR29th Feb 1996
202.31.180.0/24256APNICKR29th Feb 1996
202.31.181.0/24256APNICKR29th Feb 1996