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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

85,346 blocks match, ordered by prefix.

Allocated but unannounced blocks, 53251 to 53300 of 85346
Prefix	Addresses	Registry	Country	Allocated
2400:6020::/32	4.3B × /64	APNIC	IN	4th Mar 2022
2400:6040::/32	4.3B × /64	APNIC	CN	6th Dec 2016
2400:6060::/32	4.3B × /64	APNIC	KH	7th Mar 2022
2400:60c0::/32	4.3B × /64	APNIC	CN	6th Dec 2016
2400:6120::/32	4.3B × /64	APNIC	BD	7th Mar 2022
2400:61c0::/32	4.3B × /64	APNIC	CN	7th Dec 2016
2400:6200::/32	4.3B × /64	APNIC	CN	16th Mar 2010
2400:6240::/32	4.3B × /64	APNIC	ID	7th Dec 2016
2400:6260::/32	4.3B × /64	APNIC	BD	9th Mar 2022
2400:62c0::/32	4.3B × /64	APNIC	MM	7th Dec 2016
2400:62e0::/32	4.3B × /64	APNIC	TW	11th Mar 2022
2400:6320::/32	4.3B × /64	APNIC	NZ	11th Mar 2022
2400:63c0::/32	4.3B × /64	APNIC	IN	7th Dec 2016
2400:6440::/32	4.3B × /64	APNIC	MM	7th Dec 2016
2400:6480::/32	4.3B × /64	APNIC	IN	25th Nov 2013
2400:64a0::/32	4.3B × /64	APNIC	IN	15th Mar 2022
2400:64e0::/32	4.3B × /64	APNIC	IN	15th Mar 2022
2400:6520::/32	4.3B × /64	APNIC	PH	16th Mar 2022
2400:6560::/32	4.3B × /64	APNIC	AU	16th Mar 2022
2400:6580::/32	4.3B × /64	APNIC	IN	25th Nov 2013
2400:6620::/32	4.3B × /64	APNIC	NZ	18th Mar 2022
2400:6640::/32	4.3B × /64	APNIC	CN	9th Dec 2016
2400:66a0::/32	4.3B × /64	APNIC	CN	22nd Mar 2022
2400:66c0::/32	4.3B × /64	APNIC	CN	10th Dec 2016
2400:66e0::/32	4.3B × /64	APNIC	CN	22nd Mar 2022
2400:6740::/32	4.3B × /64	APNIC	CN	10th Dec 2016
2400:6780::/32	4.3B × /64	APNIC	SG	28th Nov 2013
2400:67a0::/32	4.3B × /64	APNIC	CN	24th Mar 2022
2400:67c0::/32	4.3B × /64	APNIC	CN	10th Dec 2016
2400:67e0::/32	4.3B × /64	APNIC	IN	24th Mar 2022
2400:6820::/32	4.3B × /64	APNIC	AU	25th Mar 2022
2400:6840::/32	4.3B × /64	APNIC	CN	10th Dec 2016
2400:68c0::/32	4.3B × /64	APNIC	CN	10th Dec 2016
2400:68e0::/32	4.3B × /64	APNIC	IN	26th Mar 2022
2400:6920::/32	4.3B × /64	APNIC	NZ	28th Mar 2022
2400:6940::/32	4.3B × /64	APNIC	CN	10th Dec 2016
2400:6960::/32	4.3B × /64	APNIC	TW	28th Mar 2022
2400:69c0::/32	4.3B × /64	APNIC	CN	10th Dec 2016
2400:69e0::/32	4.3B × /64	APNIC	VN	30th Mar 2022
2400:6a00::/32	4.3B × /64	APNIC	CN	16th Mar 2010
2400:6a20::/32	4.3B × /64	APNIC	IN	31st Mar 2022
2400:6a40::/32	4.3B × /64	APNIC	CN	10th Dec 2016
2400:6a60::/32	4.3B × /64	APNIC	IN	31st Mar 2022
2400:6aa0::/32	4.3B × /64	APNIC	AU	3rd Apr 2022
2400:6ac0::/32	4.3B × /64	APNIC	CN	10th Dec 2016
2400:6b20::/32	4.3B × /64	APNIC	IN	5th Apr 2022
2400:6b40::/32	4.3B × /64	APNIC	CN	10th Dec 2016
2400:6bc0::/32	4.3B × /64	APNIC	CN	10th Dec 2016
2400:6c40::/32	4.3B × /64	APNIC	CN	10th Dec 2016
2400:6c60::/32	4.3B × /64	APNIC	BD	7th Apr 2022