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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

84,419 blocks match, ordered by prefix.

Allocated but unannounced blocks, 55451 to 55500 of 84419
Prefix	Addresses	Registry	Country	Allocated
2403:a1c0::/32	4.3B × /64	APNIC	ID	27th Sept 2018
2403:a240::/32	4.3B × /64	APNIC	TW	27th Sept 2018
2403:a300::/32	4.3B × /64	APNIC	CN	19th Apr 2012
2403:a40::/32	4.3B × /64	APNIC	NZ	8th Jun 2018
2403:a480::/32	4.3B × /64	APNIC	CN	20th Nov 2015
2403:a4c0::/32	4.3B × /64	APNIC	NZ	28th Sept 2018
2403:a580::/32	4.3B × /64	APNIC	CN	20th Nov 2015
2403:a600::/32	4.3B × /64	APNIC	ID	2nd Aug 2010
2403:a680::/32	4.3B × /64	APNIC	CN	20th Nov 2015
2403:a6c0::/32	4.3B × /64	APNIC	CN	28th Sept 2018
2403:a700::/32	4.3B × /64	APNIC	JP	19th Apr 2012
2403:a740::/32	4.3B × /64	APNIC	TW	28th Sept 2018
2403:a780::/32	4.3B × /64	APNIC	CN	20th Nov 2015
2403:a7c0::/32	4.3B × /64	APNIC	TW	28th Sept 2018
2403:a80::/32	4.3B × /64	APNIC	CN	12th Oct 2015
2403:a880::/32	4.3B × /64	APNIC	CN	20th Nov 2015
2403:a900::/32	4.3B × /64	APNIC	SG	23rd Apr 2012
2403:a940::/32	4.3B × /64	APNIC	CN	29th Sept 2018
2403:a980::/32	4.3B × /64	APNIC	CN	20th Nov 2015
2403:a9c0::/32	4.3B × /64	APNIC	CN	30th Sept 2018
2403:aa00::/32	4.3B × /64	APNIC	ID	2nd Aug 2010
2403:aa40::/32	4.3B × /64	APNIC	CN	30th Sept 2018
2403:aa80::/32	4.3B × /64	APNIC	CN	20th Nov 2015
2403:ab80::/32	4.3B × /64	APNIC	CN	20th Nov 2015
2403:abc0::/32	4.3B × /64	APNIC	HK	2nd Oct 2018
2403:ac0::/32	4.3B × /64	APNIC	HK	8th Jun 2018
2403:ad00::/32	4.3B × /64	APNIC	IN	24th Apr 2012
2403:ad40::/32	4.3B × /64	APNIC	TW	3rd Oct 2018
2403:adc0::/32	4.3B × /64	APNIC	ID	3rd Oct 2018
2403:ae40::/32	4.3B × /64	APNIC	MY	3rd Oct 2018
2403:ae80::/32	4.3B × /64	APNIC	NR	23rd Nov 2015
2403:af00::/32	4.3B × /64	APNIC	ID	24th Apr 2012
2403:af80::/32	4.3B × /64	APNIC	CN	24th Nov 2015
2403:afc0::/32	4.3B × /64	APNIC	BD	3rd Oct 2018
2403:b000::/32	4.3B × /64	APNIC	AU	31st Mar 2008
2403:b080::/32	4.3B × /64	APNIC	CN	24th Nov 2015
2403:b101::/32	4.3B × /64	APNIC	SG	31st Jan 2022
2403:b180::/32	4.3B × /64	APNIC	CN	24th Nov 2015
2403:b280::/32	4.3B × /64	APNIC	CN	24th Nov 2015
2403:b340::/32	4.3B × /64	APNIC	TW	3rd Oct 2018
2403:b380::/32	4.3B × /64	APNIC	CN	24th Nov 2015
2403:b3c0::/32	4.3B × /64	APNIC	VN	4th Oct 2018
2403:b40::/32	4.3B × /64	APNIC	MY	8th Jun 2018
2403:b440::/32	4.3B × /64	APNIC	ID	4th Oct 2018
2403:b480::/32	4.3B × /64	APNIC	CN	24th Nov 2015
2403:b580::/32	4.3B × /64	APNIC	CN	24th Nov 2015
2403:b600::/32	4.3B × /64	APNIC	ID	2nd Aug 2010
2403:b640::/32	4.3B × /64	APNIC	TW	5th Oct 2018
2403:b680::/32	4.3B × /64	APNIC	CN	24th Nov 2015
2403:b700::/32	4.3B × /64	APNIC	NZ	1st May 2012