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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 54551 to 54600 of 85310
Prefix	Addresses	Registry	Country	Allocated
2401:c901::/32	4.3B × /64	APNIC	SG	20th Nov 2013
2401:c920::/32	4.3B × /64	APNIC	NZ	2nd Oct 2024
2401:c940::/32	4.3B × /64	APNIC	ID	14th Sept 2017
2401:c9a0::/32	4.3B × /64	APNIC	AU	4th Oct 2024
2401:c9e0::/32	4.3B × /64	APNIC	BD	4th Oct 2024
2401:ca20::/32	4.3B × /64	APNIC	CN	7th Oct 2024
2401:cac0::/32	4.3B × /64	APNIC	PH	19th Sept 2017
2401:cae0::/32	4.3B × /64	APNIC	TW	8th Oct 2024
2401:cb00::/32	4.3B × /64	APNIC	KH	24th Aug 2011
2401:cba0::/32	4.3B × /64	APNIC	JP	9th Oct 2024
2401:cbe0::/32	4.3B × /64	APNIC	CN	9th Oct 2024
2401:cc0::/32	4.3B × /64	APNIC	CN	28th Apr 2017
2401:cc40::/32	4.3B × /64	APNIC	BD	21st Sept 2017
2401:cc60::/32	4.3B × /64	APNIC	CN	11th Oct 2024
2401:cc80::/32	4.3B × /64	APNIC	HK	1st Dec 2014
2401:cca0::/32	4.3B × /64	APNIC	VN	12th Oct 2024
2401:ccc0::/32	4.3B × /64	APNIC	KH	21st Sept 2017
2401:cd60::/32	4.3B × /64	APNIC	TW	15th Oct 2024
2401:cdc0::/32	4.3B × /64	APNIC	HK	21st Sept 2017
2401:cde0::/32	4.3B × /64	APNIC	BD	17th Oct 2024
2401:ce0::/32	4.3B × /64	APNIC	MM	19th Jun 2023
2401:ce60::/32	4.3B × /64	APNIC	AU	18th Oct 2024
2401:cea0::/32	4.3B × /64	APNIC	IN	18th Oct 2024
2401:cee0::/32	4.3B × /64	APNIC	JP	21st Oct 2024
2401:cf00::/32	4.3B × /64	APNIC	AU	24th Aug 2011
2401:cf40::/32	4.3B × /64	APNIC	CN	26th Sept 2017
2401:cf60::/32	4.3B × /64	APNIC	BD	22nd Oct 2024
2401:cfc0::/32	4.3B × /64	APNIC	CN	26th Sept 2017
2401:cfe0::/32	4.3B × /64	APNIC	CN	24th Oct 2024
2401:d060::/32	4.3B × /64	APNIC	CN	25th Oct 2024
2401:d0a0::/32	4.3B × /64	APNIC	JP	27th Oct 2024
2401:d0c0::/32	4.3B × /64	APNIC	CN	27th Sept 2017
2401:d120::/32	4.3B × /64	APNIC	AU	28th Oct 2024
2401:d140::/32	4.3B × /64	APNIC	CN	27th Sept 2017
2401:d1a0::/32	4.3B × /64	APNIC	ID	29th Oct 2024
2401:d1e0::/32	4.3B × /64	APNIC	BD	29th Oct 2024
2401:d280::/32	4.3B × /64	APNIC	HK	3rd Dec 2014
2401:d2a0::/32	4.3B × /64	APNIC	PH	31st Oct 2024
2401:d2c0::/32	4.3B × /64	APNIC	CN	28th Sept 2017
2401:d340::/32	4.3B × /64	APNIC	CN	28th Sept 2017
2401:d360::/32	4.3B × /64	APNIC	PK	4th Nov 2024
2401:d3e0::/32	4.3B × /64	APNIC	PK	5th Nov 2024
2401:d400::/32	4.3B × /64	APNIC	NZ	17th Sept 2009
2401:d40::/32	4.3B × /64	APNIC	CN	28th Apr 2017
2401:d420::/32	4.3B × /64	APNIC	CN	5th Nov 2024
2401:d440::/32	4.3B × /64	APNIC	JP	29th Sept 2017
2401:d460::/32	4.3B × /64	APNIC	VN	5th Nov 2024
2401:d4a0::/32	4.3B × /64	APNIC	LA	5th Nov 2024
2401:d4c0::/32	4.3B × /64	APNIC	KH	29th Sept 2017
2401:d540::/32	4.3B × /64	APNIC	PG	30th Sept 2017