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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

22,595 blocks match, ordered by prefix.

Allocated but unannounced blocks, 16101 to 16150 of 22595
Prefix	Addresses	Registry	Country	Allocated
2400:79a0::/32	4.3B × /64	APNIC	IN	9th May 2022
2400:79c0::/32	4.3B × /64	APNIC	CN	13th Dec 2016
2400:7a60::/32	4.3B × /64	APNIC	IN	10th May 2022
2400:7ae0::/32	4.3B × /64	APNIC	CN	11th May 2022
2400:7b20::/32	4.3B × /64	APNIC	IN	12th May 2022
2400:7b40::/32	4.3B × /64	APNIC	BD	14th Dec 2016
2400:7bc0::/32	4.3B × /64	APNIC	CN	15th Dec 2016
2400:7c20::/32	4.3B × /64	APNIC	PH	14th May 2022
2400:7c40::/32	4.3B × /64	APNIC	BD	16th Dec 2016
2400:7c60::/32	4.3B × /64	APNIC	AU	17th May 2022
2400:7c80::/32	4.3B × /64	APNIC	IN	16th Dec 2013
2400:7cc0::/32	4.3B × /64	APNIC	BD	16th Dec 2016
2400:7d00::/32	4.3B × /64	APNIC	AU	21st Apr 2011
2400:7d20::/32	4.3B × /64	APNIC	JP	17th May 2022
2400:7d60::/32	4.3B × /64	APNIC	AU	18th May 2022
2400:7d80::/32	4.3B × /64	APNIC	AU	16th Dec 2013
2400:7dc0::/32	4.3B × /64	APNIC	ID	19th Dec 2016
2400:7de0::/32	4.3B × /64	APNIC	PH	18th May 2022
2400:7e20::/32	4.3B × /64	APNIC	HK	18th May 2022
2400:7e40::/32	4.3B × /64	APNIC	HK	19th Dec 2016
2400:7e80::/32	4.3B × /64	APNIC	SG	19th Dec 2013
2400:7ee0::/32	4.3B × /64	APNIC	AU	19th May 2022
2400:7f80::/32	4.3B × /64	APNIC	CN	25th Dec 2013
2400:8020::/32	4.3B × /64	APNIC	VN	21st May 2022
2400:8040::/32	4.3B × /64	APNIC	JP	21st Dec 2016
2400:8060::/32	4.3B × /64	APNIC	AU	23rd May 2022
2400:8080::/32	4.3B × /64	APNIC	CN	25th Dec 2013
2400:80e0::/32	4.3B × /64	APNIC	TO	25th May 2022
2400:81a0::/32	4.3B × /64	APNIC	TH	26th May 2022
2400:8201::/32	4.3B × /64	APNIC	CN	7th Feb 2025
2400:8260::/32	4.3B × /64	APNIC	TW	27th May 2022
2400:82a0::/32	4.3B × /64	APNIC	VN	30th May 2022
2400:82c0::/32	4.3B × /64	APNIC	CN	27th Dec 2016
2400:8340::/32	4.3B × /64	APNIC	AU	28th Dec 2016
2400:8360::/32	4.3B × /64	APNIC	VN	2nd Jun 2022
2400:83a0::/32	4.3B × /64	APNIC	VN	2nd Jun 2022
2400:83c0::/32	4.3B × /64	APNIC	GB	28th Dec 2016
2400:83e0::/32	4.3B × /64	APNIC	BD	2nd Jun 2022
2400:8400::/32	4.3B × /64	APNIC	JP	17th Jul 2009
2400:8420::/32	4.3B × /64	APNIC	AU	3rd Jun 2022
2400:84a0::/32	4.3B × /64	APNIC	AU	6th Jun 2022
2400:84c0::/32	4.3B × /64	APNIC	HK	28th Dec 2016
2400:84e0::/32	4.3B × /64	APNIC	IN	8th Jun 2022
2400:8520::/32	4.3B × /64	APNIC	IN	8th Jun 2022
2400:8560::/32	4.3B × /64	APNIC	TW	9th Jun 2022
2400:8580::/32	4.3B × /64	APNIC	CN	3rd Jan 2014
2400:8600::/32	4.3B × /64	APNIC	CN	17th Mar 2010
2400:8620::/32	4.3B × /64	APNIC	BD	13th Jun 2022
2400:8640::/32	4.3B × /64	APNIC	HK	30th Dec 2016
2400:86a0::/32	4.3B × /64	APNIC	CN	14th Jun 2022