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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

85,356 blocks match, ordered by prefix.

Allocated but unannounced blocks, 37151 to 37200 of 85356
PrefixAddressesRegistryCountryAllocated
2001:7f8:38::/4865.5k × /64RIPE NCCSE23rd May 2006
2001:7f8:39::/4865.5k × /64RIPE NCCNL16th Jun 2006
2001:7f8:3::/4865.5k × /64RIPE NCCGB13th Sept 2001
2001:7f8:3b::/4865.5k × /64RIPE NCCIL27th Feb 2007
2001:7f8:3c::/4865.5k × /64RIPE NCCKG11th Dec 2017
2001:7f8:3d::/4865.5k × /64RIPE NCCDE20th Jul 2007
2001:7f8:3e::/4865.5k × /64RIPE NCCSE25th Jul 2007
2001:7f8:3f::/4865.5k × /64RIPE NCCDE3rd Aug 2015
2001:7f8:40::/4865.5k × /64RIPE NCCNL13th Jan 2026
2001:7f8:41::/4865.5k × /64RIPE NCCNO29th Jan 2008
2001:7f8:42::/4865.5k × /64RIPE NCCPL5th Feb 2008
2001:7f8:43::/4865.5k × /64RIPE NCCFR18th Mar 2008
2001:7f8:44::/4865.5k × /64RIPE NCCDE20th May 2008
2001:7f8:45::/4865.5k × /64RIPE NCCSE27th May 2008
2001:7f8:47::/4865.5k × /64RIPE NCCFR13th Oct 2008
2001:7f8:48::/4865.5k × /64RIPE NCCIS26th Jan 2009
2001:7f8:4::/4865.5k × /64RIPE NCCGB13th Sept 2001
2001:7f8:4a::/4865.5k × /64RIPE NCCAT3rd Mar 2010
2001:7f8:4b::/4865.5k × /64RIPE NCCPL13th May 2009
2001:7f8:4c::/4865.5k × /64RIPE NCCLU14th May 2009
2001:7f8:4d::/4865.5k × /64RIPE NCCIE4th Jun 2009
2001:7f8:4e::/4865.5k × /64RIPE NCCFR6th Jul 2009
2001:7f8:4f::/4865.5k × /64RIPE NCCFR6th Feb 2026
2001:7f8:50::/4865.5k × /64RIPE NCCEE20th Aug 2009
2001:7f8:51::/4865.5k × /64RIPE NCCDE11th Dec 2024
2001:7f8:52::/4865.5k × /64RIPE NCCGB25th Feb 2026
2001:7f8:53::/4865.5k × /64RIPE NCCSE16th Dec 2009
2001:7f8:54::/4865.5k × /64RIPE NCCFR17th Mar 2010
2001:7f8:55::/4865.5k × /64RIPE NCCRU30th Mar 2010
2001:7f8:56::/4865.5k × /64RIPE NCCDE28th May 2010
2001:7f8:57::/4865.5k × /64RIPE NCCIT7th Sept 2015
2001:7f8:58::/4865.5k × /64RIPE NCCBG23rd Jul 2010
2001:7f8:59::/4865.5k × /64RIPE NCCTJ23rd Jun 2025
2001:7f8:5::/4865.5k × /64RIPE NCCRU25th Jan 2016
2001:7f8:5a::/4865.5k × /64RIPE NCCBY10th Aug 2010
2001:7f8:5c::/4865.5k × /64RIPE NCCRU24th Feb 2016
2001:7f8:5d::/4865.5k × /64RIPE NCCUA18th Nov 2010
2001:7f8:5e::/4865.5k × /64RIPE NCCCZ26th Nov 2010
2001:7f8:5f::/4865.5k × /64RIPE NCCIT25th Feb 2011
2001:7f8:60::/4865.5k × /64RIPE NCCPL21st Apr 2011
2001:7f8:61::/4865.5k × /64RIPE NCCNL26th Apr 2011
2001:7f8:62::/4865.5k × /64RIPE NCCIL16th May 2025
2001:7f8:63::/4865.5k × /64RIPE NCCUA3rd Oct 2011
2001:7f8:64::/4865.5k × /64RIPE NCCRO31st Oct 2011
2001:7f8:65::/4865.5k × /64RIPE NCCUA1st Oct 2015
2001:7f8:66::/4865.5k × /64RIPE NCCLI23rd Nov 2011
2001:7f8:67::/4865.5k × /64RIPE NCCGB13th Dec 2011
2001:7f8:68::/4865.5k × /64RIPE NCCFR28th Dec 2011
2001:7f8:69::/4865.5k × /64RIPE NCCPL22nd Mar 2012
2001:7f8:6::/4865.5k × /64RIPE NCCBG18th Dec 2001