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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

85,310 blocks match, ordered by prefix.

Allocated but unannounced blocks, 54451 to 54500 of 85310
Prefix	Addresses	Registry	Country	Allocated
2401:aec0::/32	4.3B × /64	APNIC	BD	24th Aug 2017
2401:af40::/32	4.3B × /64	APNIC	SG	24th Aug 2017
2401:afa0::/32	4.3B × /64	APNIC	CN	4th Jul 2024
2401:afc0::/32	4.3B × /64	APNIC	IN	24th Aug 2017
2401:b020::/32	4.3B × /64	APNIC	IN	5th Jul 2024
2401:b040::/32	4.3B × /64	APNIC	CN	25th Aug 2017
2401:b060::/32	4.3B × /64	APNIC	ID	5th Jul 2024
2401:b100::/32	4.3B × /64	APNIC	IN	10th Aug 2011
2401:b160::/32	4.3B × /64	APNIC	IN	8th Jul 2024
2401:b1e0::/32	4.3B × /64	APNIC	AU	11th Jul 2024
2401:b20::/32	4.3B × /64	APNIC	NP	14th Jun 2023
2401:b220::/32	4.3B × /64	APNIC	CN	11th Jul 2024
2401:b260::/32	4.3B × /64	APNIC	ID	11th Jul 2024
2401:b2a0::/32	4.3B × /64	APNIC	BD	12th Jul 2024
2401:b2c0::/32	4.3B × /64	APNIC	AU	30th Aug 2017
2401:b320::/32	4.3B × /64	APNIC	IN	12th Jul 2024
2401:b340::/32	4.3B × /64	APNIC	CN	30th Aug 2017
2401:b360::/32	4.3B × /64	APNIC	CN	15th Jul 2024
2401:b380::/32	4.3B × /64	APNIC	AU	27th Oct 2014
2401:b3a0::/32	4.3B × /64	APNIC	PH	16th Jul 2024
2401:b3c0::/32	4.3B × /64	APNIC	SG	30th Aug 2017
2401:b40::/32	4.3B × /64	APNIC	CN	28th Apr 2017
2401:b440::/32	4.3B × /64	APNIC	HK	30th Aug 2017
2401:b460::/32	4.3B × /64	APNIC	NZ	17th Jul 2024
2401:b4a0::/32	4.3B × /64	APNIC	TW	17th Jul 2024
2401:b4c0::/32	4.3B × /64	APNIC	CN	31st Aug 2017
2401:b4e0::/32	4.3B × /64	APNIC	CN	19th Jul 2024
2401:b500::/32	4.3B × /64	APNIC	AU	12th Aug 2011
2401:b520::/32	4.3B × /64	APNIC	PH	21st Jul 2024
2401:b540::/32	4.3B × /64	APNIC	CN	31st Aug 2017
2401:b560::/32	4.3B × /64	APNIC	IN	23rd Jul 2024
2401:b580::/32	4.3B × /64	APNIC	CN	31st Oct 2014
2401:b5a0::/32	4.3B × /64	APNIC	CN	23rd Jul 2024
2401:b600::/32	4.3B × /64	APNIC	CN	23rd Apr 2010
2401:b620::/32	4.3B × /64	APNIC	BD	24th Jul 2024
2401:b660::/32	4.3B × /64	APNIC	TL	30th Jul 2024
2401:b6c0::/32	4.3B × /64	APNIC	CN	31st Aug 2017
2401:b6e0::/32	4.3B × /64	APNIC	CN	30th Jul 2024
2401:b7c0::/32	4.3B × /64	APNIC	CN	4th Sept 2017
2401:b7e0::/32	4.3B × /64	APNIC	AU	4th Aug 2024
2401:b880::/32	4.3B × /64	APNIC	AU	5th Nov 2014
2401:b8a0::/32	4.3B × /64	APNIC	MM	8th Aug 2024
2401:b8e0::/32	4.3B × /64	APNIC	IN	8th Aug 2024
2401:b920::/32	4.3B × /64	APNIC	IN	8th Aug 2024
2401:b940::/32	4.3B × /64	APNIC	CN	5th Sept 2017
2401:b960::/32	4.3B × /64	APNIC	HK	8th Aug 2024
2401:b9a0::/32	4.3B × /64	APNIC	TW	8th Aug 2024
2401:b9c0::/32	4.3B × /64	APNIC	JP	5th Sept 2017
2401:ba00::/32	4.3B × /64	APNIC	CN	23rd Apr 2010
2401:ba0::/32	4.3B × /64	APNIC	CN	16th Jun 2023