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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

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Countries with unannounced space registered through RIPE NCC, largest first.

Unannounced blocks registered through RIPE NCC

25,269 blocks match, ordered by prefix.

Allocated but unannounced blocks, 22601 to 22650 of 25269
PrefixAddressesRegistryCountryAllocated
51.164.0.0/15131kRIPE NCCUS1st Sept 1993
51.166.0.0/15131kRIPE NCCUS1st Sept 1993
51.18.0.0/1665.5kRIPE NCCDE1st Sept 1993
51.2.0.0/1665.5kRIPE NCCGB1st Sept 1993
51.202.0.0/15131kRIPE NCCUS1st Sept 1993
51.204.0.0/15131kRIPE NCCUS1st Sept 1993
51.206.0.0/15131kRIPE NCCUS1st Sept 1993
51.226.0.0/15131kRIPE NCCUS1st Sept 1993
51.234.0.0/1665.5kRIPE NCCGB1st Sept 1993
51.238.0.0/15131kRIPE NCCGB1st Sept 1993
51.242.0.0/15131kRIPE NCCGB1st Sept 1993
51.246.0.0/15131kRIPE NCCGB1st Sept 1993
51.250.128.0/1732.8kRIPE NCCRU1st Sept 1993
51.251.0.0/1665.5kRIPE NCCGB1st Sept 1993
51.33.0.0/1665.5kRIPE NCCGB1st Sept 1993
51.62.0.0/15131kRIPE NCCGB1st Sept 1993
51.65.0.0/1665.5kRIPE NCCGB1st Sept 1993
51.66.0.0/15131kRIPE NCCGB1st Sept 1993
51.71.0.0/1665.5kRIPE NCCGB1st Sept 1993
57.0.0.0/1665.5kRIPE NCCCH21st Jun 1993
57.1.0.0/1665.5kRIPE NCCBE21st Jun 1993
57.112.0.0/121MRIPE NCCUS21st Jun 1993
57.12.0.0/1665.5kRIPE NCCCH21st Jun 1993
57.136.0.0/15131kRIPE NCCIE21st Jun 1993
57.14.0.0/15131kRIPE NCCCH21st Jun 1993
57.142.0.0/15131kRIPE NCCIE21st Jun 1993
57.148.0.0/15131kRIPE NCCIE21st Jun 1993
57.178.0.0/15131kRIPE NCCUS21st Jun 1993
57.186.0.0/15131kRIPE NCCCH21st Jun 1993
57.189.0.0/1665.5kRIPE NCCCH21st Jun 1993
57.194.0.0/15131kRIPE NCCIE21st Jun 1993
57.197.0.0/1665.5kRIPE NCCIE21st Jun 1993
57.199.0.0/1665.5kRIPE NCCIE21st Jun 1993
57.2.0.0/15131kRIPE NCCCH21st Jun 1993
57.20.0.0/1665.5kRIPE NCCCH21st Jun 1993
57.200.0.0/1665.5kRIPE NCCIE21st Jun 1993
57.202.0.0/15131kRIPE NCCIE21st Jun 1993
57.205.0.0/1665.5kRIPE NCCIE21st Jun 1993
57.206.128.0/1732.8kRIPE NCCCH21st Jun 1993
57.206.16.0/204.1kRIPE NCCCH21st Jun 1993
57.206.2.0/23512RIPE NCCCH21st Jun 1993
57.206.32.0/198.2kRIPE NCCCH21st Jun 1993
57.206.4.0/221kRIPE NCCCH21st Jun 1993
57.206.64.0/1816.4kRIPE NCCCH21st Jun 1993
57.206.8.0/212kRIPE NCCCH21st Jun 1993
57.207.0.0/1665.5kRIPE NCCIE21st Jun 1993
57.208.0.0/121MRIPE NCCIE21st Jun 1993
57.21.0.0/1665.5kRIPE NCCIE21st Jun 1993
57.22.0.0/15131kRIPE NCCCH21st Jun 1993
57.224.0.0/15131kRIPE NCCCH21st Jun 1993