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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

Unannounced blocks in South Korea

506 blocks match, ordered by prefix.

Allocated but unannounced blocks, 101 to 150 of 506
PrefixAddressesRegistryCountryAllocated
160.236.41.0/24256APNICKR30th Jun 2026
162.4.50.0/23512APNICKR29th Apr 2026
163.128.0.0/23512APNICKR3rd Mar 2026
163.223.94.0/23512APNICKR12th Mar 2025
166.103.0.0/1665.5kAPNICKR3rd Dec 1993
166.79.0.0/1665.5kAPNICKR5th Nov 1993
167.179.212.0/221kAPNICKR8th Sept 1993
169.140.0.0/1665.5kAPNICKR8th Nov 1994
175.107.64.0/1816.4kAPNICKR12th Jan 2010
175.45.240.0/204.1kAPNICKR21st Dec 2009
180.210.0.0/212kAPNICKR25th Sept 2009
180.210.16.0/212kAPNICKR25th Sept 2009
180.210.24.0/221kAPNICKR25th Sept 2009
180.210.28.0/221kAPNICKR25th Sept 2009
180.210.32.0/212kAPNICKR25th Sept 2009
180.210.40.0/221kAPNICKR25th Sept 2009
180.210.44.0/221kAPNICKR25th Sept 2009
180.210.48.0/212kAPNICKR25th Sept 2009
180.210.56.0/221kAPNICKR25th Sept 2009
180.210.8.0/212kAPNICKR25th Sept 2009
180.236.0.0/14262kAPNICKR26th Oct 2009
182.173.180.0/221kAPNICKR16th Apr 2010
182.252.128.0/212kAPNICKR7th May 2010
182.252.136.0/221kAPNICKR7th May 2010
182.252.144.0/204.1kAPNICKR7th May 2010
182.252.160.0/204.1kAPNICKR7th May 2010
182.252.184.0/212kAPNICKR7th May 2010
182.252.192.0/1816.4kAPNICKR7th May 2010
182.255.128.0/1816.4kAPNICKR11th May 2010
182.255.192.0/1816.4kAPNICKR11th May 2010
192.100.2.0/24256APNICKR11th Mar 1991
192.132.248.0/221kAPNICKR26th Nov 1991
192.195.39.0/24256APNICKR15th Jul 1992
192.195.40.0/24256APNICKR15th Jul 1992
192.40.0.0/221kAPNICKR29th Nov 2012
2001:220:2000::/35537M × /64APNICKR26th Nov 2003
2001:220:4000::/341.1B × /64APNICKR26th Nov 2003
2001:220:8000::/332.1B × /64APNICKR26th Nov 2003
2001:220::/35537M × /64APNICKR6th Oct 1999
2001:230:2000::/35537M × /64APNICKR2nd Aug 2002
2001:230:4000::/341.1B × /64APNICKR2nd Aug 2002
2001:230:8000::/332.1B × /64APNICKR2nd Aug 2002
2001:230::/35537M × /64APNICKR24th Nov 1999
2001:280:2000::/35537M × /64APNICKR2nd Aug 2002
2001:280:4000::/341.1B × /64APNICKR2nd Aug 2002
2001:280:8000::/332.1B × /64APNICKR2nd Aug 2002
2001:280::/35537M × /64APNICKR27th Sept 2000
2001:2b0:2000::/35537M × /64APNICKR12th Mar 2003
2001:2b0:4000::/341.1B × /64APNICKR12th Mar 2003
2001:2b0:8000::/332.1B × /64APNICKR12th Mar 2003