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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 55001 to 55050 of 85310
Prefix	Addresses	Registry	Country	Allocated
2402:4ba0::/32	4.3B × /64	APNIC	MY	29th Jan 2026
2402:4bc0::/32	4.3B × /64	APNIC	CN	8th Jan 2018
2402:4be0::/32	4.3B × /64	APNIC	CN	2nd Feb 2026
2402:4c00::/32	4.3B × /64	APNIC	IN	14th Oct 2009
2402:4c01::/32	4.3B × /64	APNIC	IN	26th Apr 2012
2402:4c20::/32	4.3B × /64	APNIC	AU	3rd Feb 2026
2402:4c40::/32	4.3B × /64	APNIC	CN	8th Jan 2018
2402:4c80::/32	4.3B × /64	APNIC	AU	30th Apr 2015
2402:4ce0::/32	4.3B × /64	APNIC	IN	6th Feb 2026
2402:4d00::/32	4.3B × /64	APNIC	HK	20th Oct 2011
2402:4d60::/32	4.3B × /64	APNIC	CN	11th Feb 2026
2402:4d80::/32	4.3B × /64	APNIC	CN	4th May 2015
2402:4da0::/32	4.3B × /64	APNIC	BD	11th Feb 2026
2402:4e40::/32	4.3B × /64	APNIC	AF	9th Jan 2018
2402:4ea0::/32	4.3B × /64	APNIC	PK	23rd Feb 2026
2402:4ec0::/32	4.3B × /64	APNIC	CN	10th Jan 2018
2402:4f60::/32	4.3B × /64	APNIC	IN	24th Feb 2026
2402:4f80::/32	4.3B × /64	APNIC	CN	5th May 2015
2402:4fa0::/32	4.3B × /64	APNIC	IN	2nd Mar 2026
2402:4fe0::/32	4.3B × /64	APNIC	IN	3rd Mar 2026
2402:500::/32	4.3B × /64	APNIC	SG	20th Sept 2011
2402:5020::/32	4.3B × /64	APNIC	MN	3rd Mar 2026
2402:5040::/32	4.3B × /64	APNIC	ID	11th Jan 2018
2402:50a0::/32	4.3B × /64	APNIC	CN	5th Mar 2026
2402:50e0::/32	4.3B × /64	APNIC	IN	5th Mar 2026
2402:5120::/32	4.3B × /64	APNIC	JP	9th Mar 2026
2402:5180::/32	4.3B × /64	APNIC	CN	6th May 2015
2402:51a0::/32	4.3B × /64	APNIC	CN	9th Mar 2026
2402:51e0::/32	4.3B × /64	APNIC	TL	12th Mar 2026
2402:5200::/32	4.3B × /64	APNIC	AU	13th May 2010
2402:5280::/32	4.3B × /64	APNIC	AU	11th May 2015
2402:52a0::/32	4.3B × /64	APNIC	PH	25th Mar 2026
2402:52e0::/32	4.3B × /64	APNIC	JP	26th Mar 2026
2402:5340::/32	4.3B × /64	APNIC	CN	11th Jan 2018
2402:5360::/32	4.3B × /64	APNIC	AU	29th Mar 2026
2402:53a0::/32	4.3B × /64	APNIC	AU	30th Mar 2026
2402:53c0::/32	4.3B × /64	APNIC	IN	11th Jan 2018
2402:5440::/32	4.3B × /64	APNIC	BD	11th Jan 2018
2402:5460::/32	4.3B × /64	APNIC	BD	1st Apr 2026
2402:5480::/32	4.3B × /64	APNIC	AU	12th May 2015
2402:5500::/32	4.3B × /64	APNIC	PH	21st Oct 2011
2402:5520::/32	4.3B × /64	APNIC	IN	8th Apr 2026
2402:5540::/32	4.3B × /64	APNIC	AU	15th Jan 2018
2402:5560::/32	4.3B × /64	APNIC	IN	8th Apr 2026
2402:55a0::/32	4.3B × /64	APNIC	TW	9th Apr 2026
2402:55c0::/32	4.3B × /64	APNIC	BD	15th Jan 2018
2402:5600::/32	4.3B × /64	APNIC	AU	13th May 2010
2402:560::/32	4.3B × /64	APNIC	IN	29th Apr 2025
2402:5640::/32	4.3B × /64	APNIC	ID	15th Jan 2018
2402:56a0::/32	4.3B × /64	APNIC	AU	10th Apr 2026