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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 55101 to 55150 of 84419
Prefix	Addresses	Registry	Country	Allocated
2402:f240::/32	4.3B × /64	APNIC	AU	25th May 2018
2402:f2c0::/32	4.3B × /64	APNIC	JP	25th May 2018
2402:f300::/32	4.3B × /64	APNIC	NZ	23rd Jan 2012
2402:f400::/32	4.3B × /64	APNIC	KR	19th Nov 2009
2402:f480::/32	4.3B × /64	APNIC	CN	25th Sept 2015
2402:f540::/32	4.3B × /64	APNIC	CN	29th May 2018
2402:f580::/32	4.3B × /64	APNIC	CN	25th Sept 2015
2402:f5c0::/32	4.3B × /64	APNIC	MY	29th May 2018
2402:f600::/32	4.3B × /64	APNIC	NZ	23rd Jun 2010
2402:f60::/32	4.3B × /64	APNIC	ID	5th Jun 2025
2402:f6c0::/32	4.3B × /64	APNIC	MM	29th May 2018
2402:f700::/32	4.3B × /64	APNIC	AU	23rd Jan 2012
2402:f780::/32	4.3B × /64	APNIC	CN	25th Sept 2015
2402:f7c0::/32	4.3B × /64	APNIC	PK	29th May 2018
2402:f900::/32	4.3B × /64	APNIC	NZ	24th Jan 2012
2402:f980::/32	4.3B × /64	APNIC	CN	29th Sept 2015
2402:f9c0::/32	4.3B × /64	APNIC	CN	31st May 2018
2402:fa0::/32	4.3B × /64	APNIC	BD	5th Jun 2025
2402:fac0::/32	4.3B × /64	APNIC	CN	31st May 2018
2402:fc00::/32	4.3B × /64	APNIC	ID	19th Nov 2009
2402:fc0::/32	4.3B × /64	APNIC	CN	24th Nov 2017
2402:fc40::/32	4.3B × /64	APNIC	US	1st Jun 2018
2402:fcc0::/32	4.3B × /64	APNIC	CN	1st Jun 2018
2402:fe0::/32	4.3B × /64	APNIC	IN	9th Jun 2025
2402:fe80::/32	4.3B × /64	APNIC	MY	2nd Oct 2015
2402:ff40::/32	4.3B × /64	APNIC	CN	5th Jun 2018
2402:ff80::/32	4.3B × /64	APNIC	AU	2nd Oct 2015
2402:ffc0::/32	4.3B × /64	APNIC	CN	5th Jun 2018
2403:100::/32	4.3B × /64	APNIC	SG	31st Jan 2012
2403:1080::/32	4.3B × /64	APNIC	IN	12th Oct 2015
2403:10c0::/32	4.3B × /64	APNIC	BD	15th Jun 2018
2403:1100::/32	4.3B × /64	APNIC	AU	7th Feb 2012
2403:1140::/32	4.3B × /64	APNIC	IN	15th Jun 2018
2403:1180::/32	4.3B × /64	APNIC	CN	13th Oct 2015
2403:11c0::/32	4.3B × /64	APNIC	TW	17th Jun 2018
2403:1340::/32	4.3B × /64	APNIC	CN	19th Jun 2018
2403:1440::/32	4.3B × /64	APNIC	CN	20th Jun 2018
2403:14c0::/32	4.3B × /64	APNIC	AU	20th Jun 2018
2403:1500::/32	4.3B × /64	APNIC	NZ	10th Feb 2012
2403:1580::/32	4.3B × /64	APNIC	CN	15th Oct 2015
2403:15c0::/32	4.3B × /64	APNIC	PH	20th Jun 2018
2403:1680::/32	4.3B × /64	APNIC	AU	19th Oct 2015
2403:16c0::/32	4.3B × /64	APNIC	CN	22nd Jun 2018
2403:1700::/32	4.3B × /64	APNIC	AU	13th Feb 2012
2403:1780::/32	4.3B × /64	APNIC	ID	19th Oct 2015
2403:17c0::/32	4.3B × /64	APNIC	CN	22nd Jun 2018
2403:1800::/32	4.3B × /64	APNIC	JP	14th Aug 2008
2403:180::/32	4.3B × /64	APNIC	AU	6th Oct 2015
2403:1840::/32	4.3B × /64	APNIC	MY	22nd Jun 2018
2403:1880::/32	4.3B × /64	APNIC	ID	19th Oct 2015