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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

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Countries with the most unannounced blocks, largest first.

Unannounced blocks

84,960 blocks match, ordered by prefix.

Allocated but unannounced blocks, 78401 to 78450 of 84960
PrefixAddressesRegistryCountryAllocated
2c0f:ff08::/324.3B × /64AFRINICZA29th Nov 2010
2c0f:ff10::/324.3B × /64AFRINICCD29th Nov 2010
2c0f:ff18::/324.3B × /64AFRINICKE7th Dec 2010
2c0f:ff40::/26275B × /64AFRINICZA9th Dec 2010
2c0f:ff88::/324.3B × /64AFRINICNG10th Jan 2011
2c0f:ff98::/324.3B × /64AFRINICUG12th Jan 2011
2c0f:ffa8::/324.3B × /64AFRINICLS31st Jan 2011
2c0f:ffb0::/324.3B × /64AFRINICNG2nd Feb 2011
2c0f:ffb8::/324.3B × /64AFRINICSD8th Sept 2015
2c0f:ffc0::/324.3B × /64AFRINICZA28th Jul 2021
2c0f:ffe8::/324.3B × /64AFRINICNG3rd Mar 2011
2c0f:fff0::/324.3B × /64AFRINICNG7th Mar 2011
31.12.16.0/204.1kRIPE NCCMK15th Apr 2011
31.130.224.0/204.1kRIPE NCCCH10th May 2011
31.132.36.0/221kRIPE NCCUS2nd Oct 2018
31.132.60.0/221kRIPE NCCDE2nd Oct 2018
31.132.8.0/221kRIPE NCCCH12th Jun 2018
31.133.128.0/1816.4kRIPE NCCCH10th May 2011
31.14.102.0/24256RIPE NCCGB18th Apr 2011
31.14.104.0/212kRIPE NCCES18th Apr 2011
31.14.192.0/212kRIPE NCCES18th Apr 2011
31.14.218.0/24256RIPE NCCTR18th Apr 2011
31.14.224.0/221kRIPE NCCRO18th Apr 2011
31.14.232.0/24256RIPE NCCTR18th Apr 2011
31.14.25.0/24256RIPE NCCVG18th Apr 2011
31.14.253.0/24256RIPE NCCTR18th Apr 2011
31.14.35.0/24256RIPE NCCRO18th Apr 2011
31.14.42.0/24256RIPE NCCRO18th Apr 2011
31.14.49.0/24256RIPE NCCRO18th Apr 2011
31.14.50.0/23512RIPE NCCBE18th Apr 2011
31.14.64.0/24256RIPE NCCTR18th Apr 2011
31.170.120.0/212kRIPE NCCDE30th Mar 2011
31.170.192.0/198.2kRIPE NCCDE31st Mar 2011
31.171.208.0/24256RIPE NCCGE21st Jan 2026
31.171.209.0/24256RIPE NCCAM21st Jan 2026
31.176.0.0/1732.8kRIPE NCCTR4th Mar 2011
31.177.96.0/212kRIPE NCCNL14th Mar 2011
31.186.88.0/212kRIPE NCCNO24th Mar 2011
31.187.66.0/24256RIPE NCCDE25th Mar 2011
31.187.69.0/24256RIPE NCCDE25th Mar 2011
31.193.108.0/221kRIPE NCCDE27th Apr 2011
31.193.112.0/212kRIPE NCCIR27th Apr 2011
31.193.224.0/212kRIPE NCCES28th Apr 2011
31.207.40.0/221kRIPE NCCGB2nd May 2011
31.207.48.0/221kRIPE NCCNL2nd May 2011
31.210.138.0/23512RIPE NCCRU4th May 2011
31.210.188.0/221kRIPE NCCIL4th May 2011
31.210.58.0/23512RIPE NCCTR4th May 2011
31.211.176.0/212kRIPE NCCDE9th May 2011
31.214.132.0/23512RIPE NCCIR6th May 2011