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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

Unannounced blocks in United States

26,251 blocks match, ordered by prefix.

Allocated but unannounced blocks, 26051 to 26100 of 26251
PrefixAddressesRegistryCountryAllocated
74.116.54.0/24256ARINUS3rd Aug 2009
74.116.60.0/221kARINUS4th Aug 2009
74.116.64.0/212kARINUS26th Feb 2025
74.116.76.0/221kARINUS5th Aug 2009
74.116.8.0/212kARINUS28th Jul 2009
74.116.84.0/221kARINUS5th Aug 2009
74.117.114.0/23512ARINUS31st Aug 2009
74.117.116.0/221kARINUS31st Aug 2009
74.117.200.0/212kARINUS15th Sept 2009
74.117.64.0/221kARINUS27th Aug 2009
74.117.80.0/221kARINUS2nd Oct 2020
74.118.132.0/24256ARINUS22nd Sept 2017
74.118.160.0/212kARINUS13th Oct 2009
74.118.184.0/221kARINUS15th Oct 2009
74.118.188.0/221kARINUS15th Oct 2009
74.118.208.0/221kARINUS16th Oct 2009
74.118.64.0/221kARINUS13th Nov 2020
74.118.84.0/221kARINUS8th May 2013
74.119.136.0/212kARINUS6th Nov 2009
74.119.172.0/221kARINUS13th Nov 2009
74.119.48.0/221kARINUS19th Dec 2019
74.120.100.0/221kARINUS4th Dec 2009
74.120.124.0/221kARINUS7th Dec 2009
74.120.140.0/221kARINUS8th Dec 2009
74.120.148.0/221kARINUS10th Dec 2009
74.120.16.0/221kARINUS6th Apr 2015
74.120.180.0/221kARINUS16th Dec 2009
74.120.224.0/212kARINUS22nd Dec 2009
74.120.236.0/221kARINUS18th Aug 2017
74.121.104.0/221kARINUS12th Jan 2010
74.121.112.0/212kARINUS14th Jan 2010
74.121.132.0/221kARINUS19th Jan 2010
74.121.200.0/221kARINUS25th Jan 2010
74.121.208.0/212kARINUS25th Jan 2010
74.122.176.0/221kARINUS19th Feb 2010
74.122.180.0/221kARINUS22nd Feb 2010
74.122.20.0/221kARINUS1st Feb 2010
74.122.248.0/212kARINUS1st Mar 2010
74.122.32.0/221kARINUS1st Feb 2010
74.122.5.0/24256ARINUS29th Jan 2010
74.123.148.0/221kARINUS19th Mar 2010
74.123.184.0/221kARINUS8th Oct 2013
74.123.216.0/212kARINUS29th Mar 2010
74.123.4.0/221kARINUS2nd Mar 2010
74.124.199.0/24256ARINUS22nd Mar 2007
74.124.201.0/24256ARINUS22nd Mar 2007
74.124.216.0/24256ARINUS22nd Mar 2007
74.170.0.0/1665.5kARINUS12th Dec 2025
74.181.0.0/1665.5kARINUS30th Oct 2006
74.182.0.0/15131kARINUS30th Oct 2006