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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

85,256 blocks match, ordered by prefix.

Allocated but unannounced blocks, 57901 to 57950 of 85256
Prefix	Addresses	Registry	Country	Allocated
2407:a040::/32	4.3B × /64	APNIC	CN	2nd Jul 2021
2407:a0c0::/32	4.3B × /64	APNIC	TW	2nd Jul 2021
2407:a100::/32	4.3B × /64	APNIC	AU	24th Jul 2013
2407:a140::/32	4.3B × /64	APNIC	ID	2nd Jul 2021
2407:a180::/32	4.3B × /64	APNIC	ID	27th Oct 2016
2407:a1c0::/32	4.3B × /64	APNIC	ID	2nd Jul 2021
2407:a240::/32	4.3B × /64	APNIC	AU	4th Jul 2021
2407:a280::/32	4.3B × /64	APNIC	AU	28th Oct 2016
2407:a340::/32	4.3B × /64	APNIC	VN	5th Jul 2021
2407:a380::/32	4.3B × /64	APNIC	SG	28th Oct 2016
2407:a440::/32	4.3B × /64	APNIC	VN	7th Jul 2021
2407:a640::/32	4.3B × /64	APNIC	CN	13th Jul 2021
2407:a680::/32	4.3B × /64	APNIC	BD	31st Oct 2016
2407:a700::/32	4.3B × /64	APNIC	HK	30th Jul 2013
2407:a7c0::/32	4.3B × /64	APNIC	CN	15th Jul 2021
2407:a80::/32	4.3B × /64	APNIC	HK	1st Sept 2016
2407:a840::/32	4.3B × /64	APNIC	JP	16th Jul 2021
2407:a880::/32	4.3B × /64	APNIC	CN	31st Oct 2016
2407:a940::/32	4.3B × /64	APNIC	CN	19th Jul 2021
2407:a980::/32	4.3B × /64	APNIC	HK	1st Nov 2016
2407:a9c0::/32	4.3B × /64	APNIC	ID	19th Jul 2021
2407:aac0::/32	4.3B × /64	APNIC	IN	20th Jul 2021
2407:ab80::/32	4.3B × /64	APNIC	ID	1st Nov 2016
2407:abc0::/32	4.3B × /64	APNIC	PH	20th Jul 2021
2407:ac80::/32	4.3B × /64	APNIC	AU	2nd Nov 2016
2407:acc0::/32	4.3B × /64	APNIC	US	21st Jul 2021
2407:ad00::/32	4.3B × /64	APNIC	ID	31st Jul 2013
2407:ad40::/32	4.3B × /64	APNIC	AU	22nd Jul 2021
2407:ae00::/32	4.3B × /64	APNIC	AU	9th Mar 2011
2407:ae40::/32	4.3B × /64	APNIC	PH	22nd Jul 2021
2407:af00::/32	4.3B × /64	APNIC	AU	1st Aug 2013
2407:af80::/32	4.3B × /64	APNIC	CN	2nd Nov 2016
2407:afc0::/32	4.3B × /64	APNIC	ID	23rd Jul 2021
2407:b040::/32	4.3B × /64	APNIC	AU	24th Jul 2021
2407:b080::/32	4.3B × /64	APNIC	CN	2nd Nov 2016
2407:b100::/32	4.3B × /64	APNIC	BD	5th Aug 2013
2407:b180::/32	4.3B × /64	APNIC	CN	2nd Nov 2016
2407:b200::/32	4.3B × /64	APNIC	KR	9th Mar 2011
2407:b280::/32	4.3B × /64	APNIC	CN	2nd Nov 2016
2407:b2c0::/32	4.3B × /64	APNIC	BD	28th Jul 2021
2407:b440::/32	4.3B × /64	APNIC	IN	28th Jul 2021
2407:b500::/32	4.3B × /64	APNIC	AU	7th Aug 2013
2407:b580::/32	4.3B × /64	APNIC	CN	3rd Nov 2016
2407:b600::/32	4.3B × /64	APNIC	AU	10th Mar 2011
2407:b680::/32	4.3B × /64	APNIC	CN	3rd Nov 2016
2407:b740::/32	4.3B × /64	APNIC	IN	30th Jul 2021
2407:b780::/32	4.3B × /64	APNIC	CN	3rd Nov 2016
2407:b800::/32	4.3B × /64	APNIC	KR	19th May 2009
2407:b880::/32	4.3B × /64	APNIC	CN	3rd Nov 2016
2407:b8c0::/32	4.3B × /64	APNIC	IN	2nd Aug 2021