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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

Unannounced blocks in United States

559 blocks match, ordered by prefix.

Allocated but unannounced blocks, 451 to 500 of 559
PrefixAddressesRegistryCountryAllocated
2a14:2700::/2934.4B × /64RIPE NCCUS7th Nov 2023
2a14:2b00::/2934.4B × /64RIPE NCCUS7th Nov 2023
2a14:2d00::/2934.4B × /64RIPE NCCUS7th Nov 2023
2a14:2f00::/2934.4B × /64RIPE NCCUS7th Nov 2023
2a14:3300::/2934.4B × /64RIPE NCCUS7th Nov 2023
2a14:3440::/2934.4B × /64RIPE NCCUS4th Apr 2024
2a14:3500::/2934.4B × /64RIPE NCCUS7th Nov 2023
2a14:4c00::/324.3B × /64RIPE NCCUS20th Oct 2023
2a14:4d00::/2934.4B × /64RIPE NCCUS16th Nov 2023
2a14:5d80::/2934.4B × /64RIPE NCCUS2nd Jan 2024
2a14:6d00::/2934.4B × /64RIPE NCCUS23rd Nov 2023
2a14:7a40::/2934.4B × /64RIPE NCCUS11th Jul 2024
2a14:c080::/2934.4B × /64RIPE NCCUS29th Jun 2026
2a14:ca80::/324.3B × /64RIPE NCCUS20th Mar 2025
2a14:d800::/2934.4B × /64RIPE NCCUS2nd Dec 2024
31.132.36.0/221kRIPE NCCUS2nd Oct 2018
37.18.176.0/212kRIPE NCCUS20th Dec 2011
45.11.244.0/221kRIPE NCCUS30th Apr 2019
45.147.52.0/221kRIPE NCCUS30th Aug 2019
45.154.124.0/221kRIPE NCCUS16th Sept 2019
46.102.158.0/23512RIPE NCCUS25th Jun 2010
46.102.239.0/24256RIPE NCCUS25th Jun 2010
46.183.88.0/212kRIPE NCCUS7th Dec 2010
46.22.64.0/204.1kRIPE NCCUS23rd Nov 2010
46.228.144.0/204.1kRIPE NCCUS7th Feb 2011
5.10.232.0/212kRIPE NCCUS2nd May 2012
5.104.64.0/212kRIPE NCCUS28th Jun 2012
5.63.144.0/212kRIPE NCCUS12th Jun 2012
5.8.251.0/24256RIPE NCCUS26th May 2021
51.100.0.0/15131kRIPE NCCUS1st Sept 1993
51.164.0.0/15131kRIPE NCCUS1st Sept 1993
51.166.0.0/15131kRIPE NCCUS1st Sept 1993
51.204.0.0/15131kRIPE NCCUS1st Sept 1993
51.206.0.0/15131kRIPE NCCUS1st Sept 1993
51.226.0.0/15131kRIPE NCCUS1st Sept 1993
57.112.0.0/121MRIPE NCCUS21st Jun 1993
57.178.0.0/15131kRIPE NCCUS21st Jun 1993
62.171.240.0/212kRIPE NCCUS18th Aug 2000
62.32.33.0/24256RIPE NCCUS12th May 2000
62.41.32.0/24256RIPE NCCUS10th May 2000
62.41.37.0/24256RIPE NCCUS10th May 2000
62.51.0.0/1665.5kRIPE NCCUS10th Mar 2005
62.78.0.0/198.2kRIPE NCCUS24th Jul 2000
66.132.154.0/23512RIPE NCCUS8th Aug 2003
66.132.192.0/23512RIPE NCCUS8th Aug 2003
66.132.196.0/23512RIPE NCCUS8th Aug 2003
66.132.200.0/23512RIPE NCCUS8th Aug 2003
66.132.210.0/23512RIPE NCCUS8th Aug 2003
66.132.234.0/23512RIPE NCCUS8th Aug 2003
66.132.252.0/23512RIPE NCCUS8th Aug 2003