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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

85,346 blocks match, ordered by prefix.

Allocated but unannounced blocks, 53701 to 53750 of 85346
Prefix	Addresses	Registry	Country	Allocated
2400:d700::/32	4.3B × /64	APNIC	HK	20th May 2011
2400:d720::/32	4.3B × /64	APNIC	CN	17th Jan 2023
2400:d780::/32	4.3B × /64	APNIC	CN	4th Apr 2014
2400:d7a0::/32	4.3B × /64	APNIC	CN	18th Jan 2023
2400:d7c0::/32	4.3B × /64	APNIC	PK	10th Mar 2017
2400:d7e0::/32	4.3B × /64	APNIC	VN	18th Jan 2023
2400:d820::/32	4.3B × /64	APNIC	JP	19th Jan 2023
2400:d8a0::/32	4.3B × /64	APNIC	IN	20th Jan 2023
2400:d8c0::/32	4.3B × /64	APNIC	ID	13th Mar 2017
2400:d920::/32	4.3B × /64	APNIC	IN	24th Jan 2023
2400:d9c0::/32	4.3B × /64	APNIC	AU	14th Mar 2017
2400:da20::/32	4.3B × /64	APNIC	VN	30th Jan 2023
2400:da60::/32	4.3B × /64	APNIC	CN	31st Jan 2023
2400:da80::/32	4.3B × /64	APNIC	SG	7th Apr 2014
2400:daa0::/32	4.3B × /64	APNIC	IN	31st Jan 2023
2400:db00::/32	4.3B × /64	APNIC	HK	22nd May 2011
2400:db40::/32	4.3B × /64	APNIC	BD	16th Mar 2017
2400:db60::/32	4.3B × /64	APNIC	US	3rd Feb 2023
2400:dc60::/32	4.3B × /64	APNIC	BD	8th Feb 2023
2400:dd20::/32	4.3B × /64	APNIC	ID	9th Feb 2023
2400:dd40::/32	4.3B × /64	APNIC	CN	16th Mar 2017
2400:dd60::/32	4.3B × /64	APNIC	HK	10th Feb 2023
2400:dda0::/32	4.3B × /64	APNIC	CN	12th Feb 2023
2400:dde0::/32	4.3B × /64	APNIC	IN	13th Feb 2023
2400:de00::/32	4.3B × /64	APNIC	CN	23rd Mar 2010
2400:de40::/32	4.3B × /64	APNIC	MM	17th Mar 2017
2400:de60::/32	4.3B × /64	APNIC	AU	13th Feb 2023
2400:de80::/32	4.3B × /64	APNIC	CN	10th Apr 2014
2400:dea0::/32	4.3B × /64	APNIC	SG	13th Feb 2023
2400:dec0::/32	4.3B × /64	APNIC	HK	17th Mar 2017
2400:dee0::/32	4.3B × /64	APNIC	CN	15th Feb 2023
2400:df20::/32	4.3B × /64	APNIC	IN	15th Feb 2023
2400:df60::/32	4.3B × /64	APNIC	IN	15th Feb 2023
2400:dfe0::/32	4.3B × /64	APNIC	IN	16th Feb 2023
2400:e040::/32	4.3B × /64	APNIC	HK	21st Mar 2017
2400:e0c0::/32	4.3B × /64	APNIC	CN	21st Mar 2017
2400:e0e0::/32	4.3B × /64	APNIC	NP	17th Feb 2023
2400:e100::/32	4.3B × /64	APNIC	JP	24th May 2011
2400:e180::/32	4.3B × /64	APNIC	KR	14th Apr 2014
2400:e1a0::/32	4.3B × /64	APNIC	IN	21st Feb 2023
2400:e1e0::/32	4.3B × /64	APNIC	BD	21st Feb 2023
2400:e200::/32	4.3B × /64	APNIC	AU	23rd Mar 2010
2400:e220::/32	4.3B × /64	APNIC	ID	21st Feb 2023
2400:e2c0::/32	4.3B × /64	APNIC	VN	21st Mar 2017
2400:e300::/32	4.3B × /64	APNIC	AU	24th May 2011
2400:e360::/32	4.3B × /64	APNIC	BD	26th Feb 2023
2400:e3a0::/32	4.3B × /64	APNIC	IN	27th Feb 2023
2400:e400::/32	4.3B × /64	APNIC	JP	7th Aug 2009
2400:e420::/32	4.3B × /64	APNIC	ID	1st Mar 2023
2400:e440::/32	4.3B × /64	APNIC	AU	22nd Mar 2017