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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

22,592 blocks match, ordered by prefix.

Allocated but unannounced blocks, 17451 to 17500 of 22592
Prefix	Addresses	Registry	Country	Allocated
2401:ef80::/32	4.3B × /64	APNIC	HK	14th Jan 2015
2401:efa0::/32	4.3B × /64	APNIC	PK	14th Feb 2025
2401:efc0::/32	4.3B × /64	APNIC	JP	31st Oct 2017
2401:efe0::/32	4.3B × /64	APNIC	IN	14th Feb 2025
2401:f00::/32	4.3B × /64	APNIC	ID	7th Jun 2011
2401:f020::/32	4.3B × /64	APNIC	ID	16th Feb 2025
2401:f060::/32	4.3B × /64	APNIC	HK	18th Feb 2025
2401:f080::/32	4.3B × /64	APNIC	AU	15th Jan 2015
2401:f0a0::/32	4.3B × /64	APNIC	CN	18th Feb 2025
2401:f0e0::/32	4.3B × /64	APNIC	CN	19th Feb 2025
2401:f120::/32	4.3B × /64	APNIC	TW	19th Feb 2025
2401:f140::/32	4.3B × /64	APNIC	BD	3rd Nov 2017
2401:f160::/32	4.3B × /64	APNIC	ID	20th Feb 2025
2401:f1a0::/32	4.3B × /64	APNIC	BD	20th Feb 2025
2401:f1c0::/32	4.3B × /64	APNIC	BD	3rd Nov 2017
2401:f220::/32	4.3B × /64	APNIC	CN	21st Feb 2025
2401:f260::/32	4.3B × /64	APNIC	PK	24th Feb 2025
2401:f280::/32	4.3B × /64	APNIC	JP	21st Jan 2015
2401:f2c0::/32	4.3B × /64	APNIC	VN	3rd Nov 2017
2401:f300::/32	4.3B × /64	APNIC	CN	14th Sept 2011
2401:f320::/32	4.3B × /64	APNIC	CN	25th Feb 2025
2401:f340::/32	4.3B × /64	APNIC	AU	6th Nov 2017
2401:f3a0::/32	4.3B × /64	APNIC	IN	5th Mar 2025
2401:f3e0::/32	4.3B × /64	APNIC	CN	6th Mar 2025
2401:f440::/32	4.3B × /64	APNIC	AU	6th Nov 2017
2401:f520::/32	4.3B × /64	APNIC	PH	12th Mar 2025
2401:f560::/32	4.3B × /64	APNIC	KR	12th Mar 2025
2401:f580::/32	4.3B × /64	APNIC	IN	23rd Jan 2015
2401:f5e0::/32	4.3B × /64	APNIC	IN	17th Mar 2025
2401:f640::/32	4.3B × /64	APNIC	AU	8th Nov 2017
2401:f660::/32	4.3B × /64	APNIC	IN	17th Mar 2025
2401:f680::/32	4.3B × /64	APNIC	PG	23rd Jan 2015
2401:f6c0::/32	4.3B × /64	APNIC	HK	8th Nov 2017
2401:f720::/32	4.3B × /64	APNIC	TL	19th Mar 2025
2401:f760::/32	4.3B × /64	APNIC	PH	19th Mar 2025
2401:f7a0::/32	4.3B × /64	APNIC	ID	20th Mar 2025
2401:f7c0::/32	4.3B × /64	APNIC	CN	10th Nov 2017
2401:f820::/32	4.3B × /64	APNIC	JP	21st Mar 2025
2401:f840::/32	4.3B × /64	APNIC	PK	10th Nov 2017
2401:f8a0::/32	4.3B × /64	APNIC	NP	24th Mar 2025
2401:f8e0::/32	4.3B × /64	APNIC	IN	24th Mar 2025
2401:f900::/32	4.3B × /64	APNIC	SG	19th Sept 2011
2401:f920::/32	4.3B × /64	APNIC	IN	24th Mar 2025
2401:f960::/32	4.3B × /64	APNIC	SG	25th Mar 2025
2401:fa0::/32	4.3B × /64	APNIC	VN	23rd Jun 2023
2401:fa80::/32	4.3B × /64	APNIC	CN	29th Jan 2015
2401:faa0::/32	4.3B × /64	APNIC	SG	4th Apr 2025
2401:fb20::/32	4.3B × /64	APNIC	IN	8th Apr 2025
2401:fb40::/32	4.3B × /64	APNIC	IN	14th Nov 2017
2401:fb80::/32	4.3B × /64	APNIC	CN	29th Jan 2015