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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 36101 to 36150 of 85346
PrefixAddressesRegistryCountryAllocated
2001:67c:185c::/4865.5k × /64RIPE NCCGB10th Aug 2021
2001:67c:1860::/4865.5k × /64RIPE NCCRU18th Oct 2013
2001:67c:186c::/4865.5k × /64RIPE NCCSE18th Oct 2013
2001:67c:1870::/4865.5k × /64RIPE NCCAT26th Aug 2026
2001:67c:1884::/4865.5k × /64RIPE NCCGB24th Oct 2013
2001:67c:188::/4865.5k × /64RIPE NCCGB5th Mar 2010
2001:67c:18::/4865.5k × /64RIPE NCCNL2nd Jul 2009
2001:67c:18ac::/4865.5k × /64RIPE NCCRU8th Nov 2013
2001:67c:18b4::/4865.5k × /64RIPE NCCDK12th Nov 2013
2001:67c:18b8::/4865.5k × /64RIPE NCCDE13th Nov 2013
2001:67c:18dc::/4865.5k × /64RIPE NCCLI20th Nov 2013
2001:67c:18e4::/4865.5k × /64RIPE NCCGB20th Nov 2013
2001:67c:18ec::/4865.5k × /64RIPE NCCDE26th Nov 2013
2001:67c:18f0::/4865.5k × /64RIPE NCCDE27th Nov 2013
2001:67c:18f4::/4865.5k × /64RIPE NCCSE2nd Dec 2013
2001:67c:18f8::/4865.5k × /64RIPE NCCSE9th Feb 2018
2001:67c:1900::/47131k × /64RIPE NCCBE3rd Dec 2013
2001:67c:190c::/4865.5k × /64RIPE NCCDE10th May 2022
2001:67c:1918::/4865.5k × /64RIPE NCCNL11th Dec 2013
2001:67c:1924::/4865.5k × /64RIPE NCCDE16th Dec 2013
2001:67c:1940::/4865.5k × /64RIPE NCCGB16th Dec 2013
2001:67c:1948::/4865.5k × /64RIPE NCCCH31st Aug 2022
2001:67c:1958::/4865.5k × /64RIPE NCCDK18th Dec 2013
2001:67c:1960::/4865.5k × /64RIPE NCCGR13th May 2020
2001:67c:1964::/4865.5k × /64RIPE NCCNO11th Apr 2018
2001:67c:1980::/4865.5k × /64RIPE NCCDE23rd Feb 2023
2001:67c:198::/4865.5k × /64RIPE NCCSE9th Apr 2015
2001:67c:1994::/4865.5k × /64RIPE NCCDE15th Jan 2014
2001:67c:199c::/4865.5k × /64RIPE NCCDE23rd Nov 2015
2001:67c:19a0::/4865.5k × /64RIPE NCCSE17th Jan 2014
2001:67c:19c4::/4865.5k × /64RIPE NCCCZ21st Jan 2014
2001:67c:19c8::/4865.5k × /64RIPE NCCPL21st Jan 2014
2001:67c:19cc::/4865.5k × /64RIPE NCCDE22nd Jan 2014
2001:67c:19d8::/4865.5k × /64RIPE NCCSI24th Jan 2014
2001:67c:19dc::/4865.5k × /64RIPE NCCSE24th Jan 2014
2001:67c:19e8::/4865.5k × /64RIPE NCCTR27th Jan 2014
2001:67c:19f0::/4865.5k × /64RIPE NCCRU5th Aug 2025
2001:67c:19fc::/4865.5k × /64RIPE NCCCH14th Jul 2015
2001:67c:1a00::/424.2M × /64RIPE NCCNL23rd Dec 2009
2001:67c:1a0::/4865.5k × /64RIPE NCCSI11th Mar 2010
2001:67c:1ac::/4865.5k × /64RIPE NCCDE17th Mar 2010
2001:67c:1b04::/4865.5k × /64RIPE NCCRU17th Jun 2013
2001:67c:1b14::/4865.5k × /64RIPE NCCSE20th Jun 2013
2001:67c:1b18::/4865.5k × /64RIPE NCCPL10th Nov 2020
2001:67c:1b20::/4865.5k × /64RIPE NCCAT16th Feb 2018
2001:67c:1b34::/4865.5k × /64RIPE NCCDE2nd Jul 2013
2001:67c:1b3c::/4865.5k × /64RIPE NCCES4th Jun 2025
2001:67c:1b48::/4865.5k × /64RIPE NCCRU23rd Jul 2026
2001:67c:1b4::/4865.5k × /64RIPE NCCPL19th Mar 2010
2001:67c:1b4c::/4865.5k × /64RIPE NCCGB31st Jul 2026