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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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 unannounced space registered through APNIC, largest first.

Unannounced blocks registered through APNIC

22,580 blocks match, ordered by prefix.

Allocated but unannounced blocks, 16551 to 16600 of 22580
Prefix	Addresses	Registry	Country	Allocated
2400:f8a0::/32	4.3B × /64	APNIC	IN	24th Apr 2023
2400:f8c0::/32	4.3B × /64	APNIC	BD	15th Apr 2017
2400:f8e0::/32	4.3B × /64	APNIC	AU	27th Apr 2023
2400:f920::/32	4.3B × /64	APNIC	IN	28th Apr 2023
2400:f980::/32	4.3B × /64	APNIC	CN	8th May 2014
2400:f9a0::/32	4.3B × /64	APNIC	JP	1st May 2023
2400:fa20::/32	4.3B × /64	APNIC	IN	3rd May 2023
2400:fa60::/32	4.3B × /64	APNIC	KH	4th May 2023
2400:fac0::/32	4.3B × /64	APNIC	CN	17th Apr 2017
2400:fae0::/32	4.3B × /64	APNIC	IN	8th May 2023
2400:fb00::/32	4.3B × /64	APNIC	ID	2nd Jun 2011
2400:fb40::/32	4.3B × /64	APNIC	CN	19th Apr 2017
2400:fb60::/32	4.3B × /64	APNIC	CN	8th May 2023
2400:fb80::/32	4.3B × /64	APNIC	SG	12th May 2014
2400:fba0::/32	4.3B × /64	APNIC	JP	8th May 2023
2400:fbc0::/32	4.3B × /64	APNIC	CN	19th Apr 2017
2400:fc20::/32	4.3B × /64	APNIC	BD	10th May 2023
2400:fc40::/32	4.3B × /64	APNIC	CN	19th Apr 2017
2400:fc80::/32	4.3B × /64	APNIC	TW	13th May 2014
2400:fca0::/32	4.3B × /64	APNIC	BD	11th May 2023
2400:fcc0::/32	4.3B × /64	APNIC	CN	19th Apr 2017
2400:fd20::/32	4.3B × /64	APNIC	IN	11th May 2023
2400:fda6::/32	4.3B × /64	APNIC	KR	25th Oct 2023
2400:fdc0::/32	4.3B × /64	APNIC	IN	19th Apr 2017
2400:fe40::/32	4.3B × /64	APNIC	MM	20th Apr 2017
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