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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

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Countries with unannounced space registered through LACNIC, largest first.

Unannounced blocks in Costa Rica

69 blocks match, ordered by prefix.

Allocated but unannounced blocks, 1 to 50 of 69
PrefixAddressesRegistryCountryAllocated
144.23.0.0/1665.5kLACNICCR6th Nov 1990
192.153.167.0/24256LACNICCR3rd Apr 1992
198.49.164.0/24256LACNICCR19th Feb 1993
200.10.145.0/24256LACNICCR4th Apr 1994
200.12.167.0/24256LACNICCR20th Sept 1994
200.33.108.0/24256LACNICCR2nd Jul 2025
200.9.209.0/24256LACNICCR6th Jan 1994
200.9.210.0/24256LACNICCR6th Jan 1994
200.9.211.0/24256LACNICCR6th Jan 1994
201.148.232.0/221kLACNICCR16th Jul 2014
2800:b90::/324.3B × /64LACNICCR17th Nov 2011
2800:f0::/324.3B × /64LACNICCR30th Mar 2007
2801:0:4a0::/4865.5k × /64LACNICCR19th Dec 2012
2801:11:3000::/4865.5k × /64LACNICCR14th Jun 2017
2801:12:400::/4865.5k × /64LACNICCR9th Jun 2025
2801:13:f000::/4865.5k × /64LACNICCR28th Sept 2018
2801:15:2000::/4865.5k × /64LACNICCR3rd Jun 2014
2801:15:8000::/4865.5k × /64LACNICCR2nd May 2013
2801:15d::/441M × /64LACNICCR1st Jun 2026
2801:16:a000::/4865.5k × /64LACNICCR23rd Jul 2014
2801:18:800::/4865.5k × /64LACNICCR12th Dec 2018
2801:19:f800::/4865.5k × /64LACNICCR2nd Jan 2025
2801:1::/324.3B × /64LACNICCR21st Sept 2011
2801:1c:4800::/4865.5k × /64LACNICCR23rd Sept 2019
2801:1e:8000::/4865.5k × /64LACNICCR24th Apr 2013
2801:1f:c000::/4865.5k × /64LACNICCR8th Apr 2014
2803:1b20::/324.3B × /64LACNICCR2nd Mar 2018
2803:2040::/324.3B × /64LACNICCR1st Apr 2015
2803:21a0::/324.3B × /64LACNICCR1st Oct 2018
2803:2cc0::/324.3B × /64LACNICCR15th Nov 2016
2803:2ed0::/324.3B × /64LACNICCR2nd May 2025
2803:3200::/324.3B × /64LACNICCR22nd Jun 2012
2803:3600::/324.3B × /64LACNICCR29th Aug 2012
2803:3710::/324.3B × /64LACNICCR1st Apr 2022
2803:4910::/324.3B × /64LACNICCR22nd Oct 2021
2803:4920::/324.3B × /64LACNICCR6th Dec 2017
2803:50c0::/324.3B × /64LACNICCR9th Sept 2016
2803:5420::/324.3B × /64LACNICCR18th Sept 2017
2803:5580::/324.3B × /64LACNICCR16th Jul 2014
2803:5b00::/324.3B × /64LACNICCR22nd May 2013
2803:6350::/324.3B × /64LACNICCR26th Jul 2024
2803:6e10::/324.3B × /64LACNICCR31st Aug 2021
2803:8800::/324.3B × /64LACNICCR24th Feb 2012
2803:8e10::/324.3B × /64LACNICCR17th Aug 2021
2803:9690::/324.3B × /64LACNICCR31st Oct 2022
2803:9920::/324.3B × /64LACNICCR15th Dec 2017
2803:9b20::/324.3B × /64LACNICCR5th Mar 2018
2803:9cd0::/324.3B × /64LACNICCR21st Jan 2025
2803:9dd0::/324.3B × /64LACNICCR26th Aug 2025
2803:9ec0::/324.3B × /64LACNICCR10th Mar 2017