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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

Unannounced blocks in United States

26,289 blocks match, ordered by prefix.

Allocated but unannounced blocks, 21351 to 21400 of 26289
PrefixAddressesRegistryCountryAllocated
2602:fbba::/4016.8M × /64ARINUS24th Feb 2022
2602:fbbd::/36268M × /64ARINUS22nd Feb 2022
2602:fbc3::/36268M × /64ARINUS22nd Feb 2022
2602:fbc4::/36268M × /64ARINUS22nd Feb 2022
2602:fbc9::/36268M × /64ARINUS11th Feb 2022
2602:fbca::/36268M × /64ARINUS8th Feb 2022
2602:fbcd::/36268M × /64ARINUS8th Feb 2022
2602:fbd1::/36268M × /64ARINUS31st Jan 2022
2602:fbd3::/4016.8M × /64ARINUS25th Jan 2022
2602:fbd7::/36268M × /64ARINUS24th Jan 2022
2602:fbdc::/4016.8M × /64ARINUS18th Jan 2022
2602:fbdf::/36268M × /64ARINUS13th Jan 2022
2602:fbe6::/36268M × /64ARINUS11th Jan 2022
2602:fbe9::/36268M × /64ARINUS7th Jan 2022
2602:fbeb::/36268M × /64ARINUS5th Jan 2022
2602:fbed::/324.3B × /64ARINUS3rd Jan 2022
2602:fbf3::/4016.8M × /64ARINUS17th Dec 2021
2602:fbf6::/4016.8M × /64ARINUS15th May 2026
2602:fbf7::/36268M × /64ARINUS8th Dec 2021
2602:fbfb::/36268M × /64ARINUS6th Dec 2021
2602:fbfd::/36268M × /64ARINUS3rd Dec 2021
2602:fc00::/36268M × /64ARINUS2nd Dec 2021
2602:fc01::/36268M × /64ARINUS2nd Dec 2021
2602:fc04::/36268M × /64ARINUS22nd Nov 2021
2602:fc0a::/36268M × /64ARINUS4th Nov 2021
2602:fc0b::/4016.8M × /64ARINUS4th Nov 2021
2602:fc0c::/36268M × /64ARINUS4th Nov 2021
2602:fc11::/36268M × /64ARINUS21st Oct 2021
2602:fc12::/36268M × /64ARINUS19th Oct 2021
2602:fc17::/36268M × /64ARINUS11th Oct 2021
2602:fc18::/36268M × /64ARINUS11th Oct 2021
2602:fc1a::/36268M × /64ARINUS7th Oct 2021
2602:fc20::/36268M × /64ARINUS5th Oct 2021
2602:fc21::/4016.8M × /64ARINUS5th Oct 2021
2602:fc28::/36268M × /64ARINUS28th Sept 2021
2602:fc2b::/36268M × /64ARINUS23rd Sept 2021
2602:fc2c::/36268M × /64ARINUS16th Sept 2021
2602:fc2e::/36268M × /64ARINUS15th Sept 2021
2602:fc32::/36268M × /64ARINUS31st Aug 2021
2602:fc35::/36268M × /64ARINUS30th Aug 2021
2602:fc36::/36268M × /64ARINUS27th Aug 2021
2602:fc3d::/36268M × /64ARINUS19th Aug 2021
2602:fc40::/36268M × /64ARINUS17th Aug 2021
2602:fc50::/36268M × /64ARINUS28th Jul 2021
2602:fc54::/36268M × /64ARINUS21st Jul 2021
2602:fc55::/36268M × /64ARINUS19th Jul 2021
2602:fc56::/36268M × /64ARINUS14th Jul 2021
2602:fc57::/36268M × /64ARINUS8th Jul 2021
2602:fc5d::/324.3B × /64ARINUS29th Jun 2021
2602:fc5e::/36268M × /64ARINUS25th Jun 2021