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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 53851 to 53900 of 85346
Prefix	Addresses	Registry	Country	Allocated
2400:fe60::/32	4.3B × /64	APNIC	TW	15th May 2023
2400:fe80::/32	4.3B × /64	APNIC	AU	13th May 2014
2400:fec0::/32	4.3B × /64	APNIC	BD	20th Apr 2017
2400:fee0::/32	4.3B × /64	APNIC	TW	16th May 2023
2400:ff20::/32	4.3B × /64	APNIC	IN	17th May 2023
2400:ff40::/32	4.3B × /64	APNIC	AU	20th Apr 2017
2400:ffe0::/32	4.3B × /64	APNIC	IN	18th May 2023
2401:1000::/32	4.3B × /64	APNIC	CN	9th Nov 2007
2401:100::/32	4.3B × /64	APNIC	AU	3rd Jun 2011
2401:1020::/32	4.3B × /64	APNIC	HK	25th Jun 2023
2401:1060::/32	4.3B × /64	APNIC	BD	27th Jun 2023
2401:10a0::/32	4.3B × /64	APNIC	VN	28th Jun 2023
2401:1100::/32	4.3B × /64	APNIC	HK	8th Jun 2011
2401:1120::/32	4.3B × /64	APNIC	SG	29th Jun 2023
2401:11c0::/32	4.3B × /64	APNIC	CN	2nd May 2017
2401:1220::/32	4.3B × /64	APNIC	MM	30th Jun 2023
2401:1240::/32	4.3B × /64	APNIC	TH	2nd May 2017
2401:1260::/32	4.3B × /64	APNIC	AU	3rd Jul 2023
2401:1280::/32	4.3B × /64	APNIC	HK	8th Jun 2014
2401:12a0::/32	4.3B × /64	APNIC	IN	3rd Jul 2023
2401:12c0::/32	4.3B × /64	APNIC	CN	3rd May 2017
2401:1300::/32	4.3B × /64	APNIC	NZ	8th Jun 2011
2401:1340::/32	4.3B × /64	APNIC	ID	3rd May 2017
2401:1360::/32	4.3B × /64	APNIC	IN	4th Jul 2023
2401:140::/32	4.3B × /64	APNIC	CN	21st Apr 2017
2401:1440::/32	4.3B × /64	APNIC	ID	3rd May 2017
2401:14a0::/32	4.3B × /64	APNIC	VN	6th Jul 2023
2401:14e0::/32	4.3B × /64	APNIC	VN	6th Jul 2023
2401:1500::/32	4.3B × /64	APNIC	AU	8th Jun 2011
2401:1520::/32	4.3B × /64	APNIC	AF	9th Jul 2023
2401:1580::/32	4.3B × /64	APNIC	DE	12th Jun 2014
2401:15c0::/32	4.3B × /64	APNIC	CN	4th May 2017
2401:15e0::/32	4.3B × /64	APNIC	IN	10th Jul 2023
2401:1600::/32	4.3B × /64	APNIC	PH	26th Mar 2010
2401:160::/32	4.3B × /64	APNIC	BD	22nd May 2023
2401:1680::/32	4.3B × /64	APNIC	MY	12th Jun 2014
2401:1720::/32	4.3B × /64	APNIC	AU	11th Jul 2023
2401:1760::/32	4.3B × /64	APNIC	VN	12th Jul 2023
2401:17e0::/32	4.3B × /64	APNIC	SG	13th Jul 2023
2401:180::/32	4.3B × /64	APNIC	ID	21st May 2014
2401:1820::/32	4.3B × /64	APNIC	PH	13th Jul 2023
2401:1840::/32	4.3B × /64	APNIC	AU	4th May 2017
2401:18a0::/32	4.3B × /64	APNIC	MM	13th Jul 2023
2401:18c0::/32	4.3B × /64	APNIC	CN	4th May 2017
2401:18e0::/28	68.7B × /64	APNIC	CN	14th Jul 2023
2401:1901::/32	4.3B × /64	APNIC	BD	3rd Jun 2024
2401:1920::/32	4.3B × /64	APNIC	BD	14th Jul 2023
2401:1940::/32	4.3B × /64	APNIC	CN	4th May 2017
2401:1980::/32	4.3B × /64	APNIC	BD	13th Jun 2014
2401:19c0::/32	4.3B × /64	APNIC	CN	4th May 2017