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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

Unannounced blocks in United States

26,295 blocks match, ordered by prefix.

Allocated but unannounced blocks, 7151 to 7200 of 26295
PrefixAddressesRegistryCountryAllocated
192.43.150.0/24256ARINUS4th Oct 1988
192.43.151.0/24256ARINUS20th Oct 1988
192.43.16.0/204.1kARINUS4th Oct 1988
192.43.173.0/24256ARINUS7th Aug 1991
192.43.188.0/24256ARINUS21st Nov 1988
192.43.191.0/24256ARINUS28th Nov 1988
192.43.199.0/24256ARINUS29th Nov 1988
192.43.2.0/23512ARINUS4th Oct 1988
192.43.200.0/24256ARINUS2nd Dec 1988
192.43.203.0/24256ARINUS5th Dec 1988
192.43.204.0/24256ARINUS5th Dec 1988
192.43.211.0/24256ARINUS6th Dec 1988
192.43.213.0/24256ARINUS6th Dec 1988
192.43.214.0/24256ARINUS6th Dec 1988
192.43.216.0/24256ARINUS6th Dec 1988
192.43.218.0/24256ARINUS13th Dec 1988
192.43.220.0/24256ARINUS13th Dec 1988
192.43.222.0/24256ARINUS13th Dec 1988
192.43.235.0/24256ARINUS19th Dec 1988
192.43.236.0/24256ARINUS19th Dec 1988
192.43.237.0/24256ARINUS20th Dec 1988
192.43.240.0/24256ARINUS21st Dec 1988
192.43.241.0/24256ARINUS21st Dec 1988
192.43.243.0/24256ARINUS22nd Dec 1988
192.43.245.0/24256ARINUS23rd Dec 1988
192.43.247.0/24256ARINUS3rd Jan 1989
192.43.250.0/24256ARINUS9th Jan 1989
192.43.251.0/24256ARINUS10th Jan 1989
192.43.4.0/221kARINUS4th Oct 1988
192.43.8.0/212kARINUS4th Oct 1988
192.44.254.0/24256ARINUS11th Feb 1998
192.46.104.0/221kARINUS20th Dec 1988
192.46.108.0/23512ARINUS20th Dec 1988
192.46.144.0/212kARINUS20th Dec 1988
192.46.152.0/24256ARINUS20th Dec 1988
192.46.153.0/24256ARINUS20th Dec 1988
192.46.154.0/23512ARINUS20th Dec 1988
192.46.156.0/24256ARINUS20th Dec 1988
192.46.157.0/24256ARINUS20th Dec 1988
192.46.158.0/23512ARINUS20th Dec 1988
192.46.160.0/24256ARINUS20th Dec 1988
192.46.161.0/24256ARINUS20th Dec 1988
192.46.162.0/23512ARINUS20th Dec 1988
192.46.164.0/221kARINUS20th Dec 1988
192.46.168.0/23512ARINUS20th Dec 1988
192.46.170.0/24256ARINUS20th Dec 1988
192.46.171.0/24256ARINUS20th Dec 1988
192.46.180.0/221kARINUS20th Dec 1988
192.46.192.0/24256ARINUS20th Dec 1988
192.46.196.0/221kARINUS20th Dec 1988