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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

85,346 blocks match, ordered by prefix.

Allocated but unannounced blocks, 35951 to 36000 of 85346
PrefixAddressesRegistryCountryAllocated
2001:67c:120::/4865.5k × /64RIPE NCCBE21st Jan 2010
2001:67c:120c::/4865.5k × /64RIPE NCCSA2nd Jan 2024
2001:67c:1230::/46262k × /64RIPE NCCCH18th Nov 2010
2001:67c:1240::/4865.5k × /64RIPE NCCIE20th Aug 2012
2001:67c:1244::/4865.5k × /64RIPE NCCHR17th Feb 2026
2001:67c:1248::/4865.5k × /64RIPE NCCRO27th Aug 2012
2001:67c:125c::/4865.5k × /64RIPE NCCIE29th Aug 2012
2001:67c:126c::/4865.5k × /64RIPE NCCCH30th Aug 2012
2001:67c:1278::/4865.5k × /64RIPE NCCFR3rd Sept 2012
2001:67c:1284::/4865.5k × /64RIPE NCCAT21st Sept 2012
2001:67c:128c::/4865.5k × /64RIPE NCCFR24th Sept 2012
2001:67c:1294::/4865.5k × /64RIPE NCCSE24th Sept 2012
2001:67c:129c::/4865.5k × /64RIPE NCCKZ17th Feb 2026
2001:67c:12a4::/4865.5k × /64RIPE NCCTR28th Sept 2012
2001:67c:12a8::/4865.5k × /64RIPE NCCRU16th Aug 2022
2001:67c:12c4::/4865.5k × /64RIPE NCCGB12th May 2025
2001:67c:12cc::/4865.5k × /64RIPE NCCUA31st Mar 2025
2001:67c:12d0::/4865.5k × /64RIPE NCCSI3rd Oct 2012
2001:67c:12dc::/4865.5k × /64RIPE NCCGB5th Oct 2012
2001:67c:12f8::/4865.5k × /64RIPE NCCDK10th Oct 2012
2001:67c:12fc::/4865.5k × /64RIPE NCCFR10th Oct 2012
2001:67c:1304::/4865.5k × /64RIPE NCCRU23rd Jan 2013
2001:67c:130c::/4865.5k × /64RIPE NCCGB24th Jan 2013
2001:67c:1310::/4865.5k × /64RIPE NCCDK24th Jan 2013
2001:67c:131c::/4865.5k × /64RIPE NCCRU28th Jan 2013
2001:67c:1334::/4865.5k × /64RIPE NCCUA11th Sept 2019
2001:67c:1338::/4865.5k × /64RIPE NCCPL1st Feb 2013
2001:67c:1340::/4865.5k × /64RIPE NCCHR5th Feb 2013
2001:67c:134c::/4865.5k × /64RIPE NCCCZ7th Feb 2013
2001:67c:1354::/4865.5k × /64RIPE NCCPL1st Oct 2025
2001:67c:1358::/4865.5k × /64RIPE NCCRU14th Feb 2013
2001:67c:1360::/4865.5k × /64RIPE NCCGB18th Feb 2013
2001:67c:1368::/4865.5k × /64RIPE NCCGB2nd Oct 2025
2001:67c:136c::/4865.5k × /64RIPE NCCCH20th Feb 2013
2001:67c:1374::/4865.5k × /64RIPE NCCRU21st Feb 2013
2001:67c:1378::/4865.5k × /64RIPE NCCUA21st Feb 2013
2001:67c:1380::/4865.5k × /64RIPE NCCPL22nd Feb 2013
2001:67c:138::/4865.5k × /64RIPE NCCDE4th Feb 2010
2001:67c:138c::/4865.5k × /64RIPE NCCPL26th Feb 2013
2001:67c:1394::/4865.5k × /64RIPE NCCUA27th Feb 2013
2001:67c:13a4::/4865.5k × /64RIPE NCCPL7th Jan 2019
2001:67c:13ac::/4865.5k × /64RIPE NCCFI28th Feb 2013
2001:67c:13b4::/4865.5k × /64RIPE NCCNL28th Feb 2013
2001:67c:13bc::/4865.5k × /64RIPE NCCSE1st Mar 2013
2001:67c:13c0::/4865.5k × /64RIPE NCCCH4th Mar 2013
2001:67c:13c4::/4865.5k × /64RIPE NCCSK23rd Dec 2025
2001:67c:13d0::/4865.5k × /64RIPE NCCRU6th Mar 2013
2001:67c:13e8::/4865.5k × /64RIPE NCCAT12th Mar 2013
2001:67c:13ec::/4865.5k × /64RIPE NCCPT13th Mar 2013
2001:67c:13f0::/4865.5k × /64RIPE NCCRU13th Mar 2013