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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

Unannounced blocks in China

6,720 blocks match, ordered by prefix.

Allocated but unannounced blocks, 5501 to 5550 of 6720
Prefix	Addresses	Registry	Country	Allocated
2406:f300::/32	4.3B × /64	APNIC	CN	14th May 2013
2406:f4c0::/32	4.3B × /64	APNIC	CN	28th Dec 2020
2406:f7c0::/32	4.3B × /64	APNIC	CN	29th Dec 2020
2406:f80::/32	4.3B × /64	APNIC	CN	29th Jul 2016
2406:f980::/32	4.3B × /64	APNIC	CN	29th Aug 2016
2406:fc80::/32	4.3B × /64	APNIC	CN	30th Aug 2016
2406:fd80::/32	4.3B × /64	APNIC	CN	30th Aug 2016
2406:fe80::/32	4.3B × /64	APNIC	CN	31st Aug 2016
2406:ff00::/32	4.3B × /64	APNIC	CN	22nd May 2013
2407:17c0::/32	4.3B × /64	APNIC	CN	3rd Feb 2021
2407:1900::/32	4.3B × /64	APNIC	CN	4th Jun 2013
2407:1d00::/32	4.3B × /64	APNIC	CN	6th Jun 2013
2407:2280::/32	4.3B × /64	APNIC	CN	5th Sept 2016
2407:2380::/32	4.3B × /64	APNIC	CN	5th Sept 2016
2407:2780::/32	4.3B × /64	APNIC	CN	6th Sept 2016
2407:2ac0::/32	4.3B × /64	APNIC	CN	3rd Mar 2021
2407:31c0::/32	4.3B × /64	APNIC	CN	10th Mar 2021
2407:3340::/32	4.3B × /64	APNIC	CN	11th Mar 2021
2407:3540::/32	4.3B × /64	APNIC	CN	11th Mar 2021
2407:3700::/32	4.3B × /64	APNIC	CN	18th Jun 2013
2407:3740::/32	4.3B × /64	APNIC	CN	16th Mar 2021
2407:3900::/32	4.3B × /64	APNIC	CN	18th Jun 2013
2407:3f40::/32	4.3B × /64	APNIC	CN	23rd Mar 2021
2407:43c0::/32	4.3B × /64	APNIC	CN	26th Mar 2021
2407:4440::/32	4.3B × /64	APNIC	CN	26th Mar 2021
2407:4580::/32	4.3B × /64	APNIC	CN	18th Sept 2016
2407:4680::/32	4.3B × /64	APNIC	CN	19th Sept 2016
2407:4740::/32	4.3B × /64	APNIC	CN	30th Mar 2021
2407:480::/32	4.3B × /64	APNIC	CN	1st Sept 2016
2407:4880::/32	4.3B × /64	APNIC	CN	19th Sept 2016
2407:4a80::/32	4.3B × /64	APNIC	CN	19th Sept 2016
2407:4c80::/32	4.3B × /64	APNIC	CN	19th Sept 2016
2407:4d80::/32	4.3B × /64	APNIC	CN	19th Sept 2016
2407:4e80::/32	4.3B × /64	APNIC	CN	19th Sept 2016
2407:4f00::/32	4.3B × /64	APNIC	CN	25th Jun 2013
2407:53c0::/32	4.3B × /64	APNIC	CN	20th Apr 2021
2407:5500::/32	4.3B × /64	APNIC	CN	28th Jun 2013
2407:5780::/32	4.3B × /64	APNIC	CN	22nd Sept 2016
2407:580::/32	4.3B × /64	APNIC	CN	1st Sept 2016
2407:5840::/32	4.3B × /64	APNIC	CN	27th Apr 2021
2407:6040::/32	4.3B × /64	APNIC	CN	12th May 2021
2407:6580::/32	4.3B × /64	APNIC	CN	29th Sept 2016
2407:7680::/32	4.3B × /64	APNIC	CN	8th Oct 2016
2407:7780::/32	4.3B × /64	APNIC	CN	8th Oct 2016
2407:7880::/32	4.3B × /64	APNIC	CN	8th Oct 2016
2407:7980::/32	4.3B × /64	APNIC	CN	9th Oct 2016
2407:7c80::/32	4.3B × /64	APNIC	CN	10th Oct 2016
2407:7d80::/32	4.3B × /64	APNIC	CN	10th Oct 2016
2407:7e80::/32	4.3B × /64	APNIC	CN	10th Oct 2016
2407:8880::/32	4.3B × /64	APNIC	CN	14th Oct 2016