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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

6,735 blocks match, ordered by prefix.

Allocated but unannounced blocks, 4451 to 4500 of 6735
Prefix	Addresses	Registry	Country	Allocated
2401:e00::/32	4.3B × /64	APNIC	CN	26th Mar 2010
2401:e020::/32	4.3B × /64	APNIC	CN	12th Dec 2024
2401:e080::/32	4.3B × /64	APNIC	CN	30th Dec 2014
2401:e0c0::/32	4.3B × /64	APNIC	CN	12th Oct 2017
2401:e140::/32	4.3B × /64	APNIC	CN	12th Oct 2017
2401:e240::/32	4.3B × /64	APNIC	CN	16th Oct 2017
2401:e2c0::/32	4.3B × /64	APNIC	CN	16th Oct 2017
2401:e340::/32	4.3B × /64	APNIC	CN	16th Oct 2017
2401:e360::/32	4.3B × /64	APNIC	CN	23rd Dec 2024
2401:e620::/32	4.3B × /64	APNIC	CN	3rd Jan 2025
2401:e840::/32	4.3B × /64	APNIC	CN	23rd Oct 2017
2401:e8c0::/32	4.3B × /64	APNIC	CN	23rd Oct 2017
2401:e940::/32	4.3B × /64	APNIC	CN	23rd Oct 2017
2401:e9c0::/32	4.3B × /64	APNIC	CN	23rd Oct 2017
2401:ec40::/32	4.3B × /64	APNIC	CN	26th Oct 2017
2401:f0a0::/32	4.3B × /64	APNIC	CN	18th Feb 2025
2401:f0e0::/32	4.3B × /64	APNIC	CN	19th Feb 2025
2401:f220::/32	4.3B × /64	APNIC	CN	21st Feb 2025
2401:f300::/32	4.3B × /64	APNIC	CN	14th Sept 2011
2401:f320::/32	4.3B × /64	APNIC	CN	25th Feb 2025
2401:f3e0::/32	4.3B × /64	APNIC	CN	6th Mar 2025
2401:f7c0::/32	4.3B × /64	APNIC	CN	10th Nov 2017
2401:fa80::/32	4.3B × /64	APNIC	CN	29th Jan 2015
2401:fb80::/32	4.3B × /64	APNIC	CN	29th Jan 2015
2401:fc60::/32	4.3B × /64	APNIC	CN	9th Apr 2025
2401:fc80::/32	4.3B × /64	APNIC	CN	2nd Feb 2015
2401:ffc0::/32	4.3B × /64	APNIC	CN	16th Nov 2017
2402:1000::/32	4.3B × /64	APNIC	CN	2nd Nov 2007
2402:1160::/32	4.3B × /64	APNIC	CN	13th Jun 2025
2402:14c0::/32	4.3B × /64	APNIC	CN	27th Nov 2017
2402:1520::/32	4.3B × /64	APNIC	CN	7th Jul 2025
2402:1600::/32	4.3B × /64	APNIC	CN	5th May 2010
2402:16e0::/32	4.3B × /64	APNIC	CN	10th Jul 2025
2402:1740::/32	4.3B × /64	APNIC	CN	29th Nov 2017
2402:19c0::/32	4.3B × /64	APNIC	CN	29th Nov 2017
2402:1be0::/32	4.3B × /64	APNIC	CN	22nd Jul 2025
2402:1c20::/32	4.3B × /64	APNIC	CN	23rd Jul 2025
2402:1f80::/32	4.3B × /64	APNIC	CN	11th Mar 2015
2402:2280::/32	4.3B × /64	APNIC	CN	12th Mar 2015
2402:2440::/32	4.3B × /64	APNIC	CN	4th Dec 2017
2402:24c0::/32	4.3B × /64	APNIC	CN	4th Dec 2017
2402:2540::/32	4.3B × /64	APNIC	CN	4th Dec 2017
2402:2640::/32	4.3B × /64	APNIC	CN	4th Dec 2017
2402:2760::/32	4.3B × /64	APNIC	CN	2nd Sept 2025
2402:2a00::/32	4.3B × /64	APNIC	CN	7th May 2010
2402:2b80::/32	4.3B × /64	APNIC	CN	23rd Mar 2015
2402:2bc0::/32	4.3B × /64	APNIC	CN	6th Dec 2017
2402:2ca0::/32	4.3B × /64	APNIC	CN	19th Sept 2025
2402:2d00::/32	4.3B × /64	APNIC	CN	10th Oct 2011
2402:2d80::/32	4.3B × /64	APNIC	CN	26th Mar 2015