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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 54151 to 54200 of 85310
Prefix	Addresses	Registry	Country	Allocated
2401:5f00::/32	4.3B × /64	APNIC	AU	5th Jul 2011
2401:5f40::/32	4.3B × /64	APNIC	BT	23rd Jun 2017
2401:5f60::/32	4.3B × /64	APNIC	BD	28th Dec 2023
2401:5fa0::/32	4.3B × /64	APNIC	CN	28th Dec 2023
2401:5fc0::/32	4.3B × /64	APNIC	TH	28th Jun 2017
2401:5fe0::/32	4.3B × /64	APNIC	IN	29th Dec 2023
2401:600::/32	4.3B × /64	APNIC	JP	25th Mar 2010
2401:60::/32	4.3B × /64	APNIC	CN	19th May 2023
2401:620::/32	4.3B × /64	APNIC	CN	5th Jun 2023
2401:660::/32	4.3B × /64	APNIC	ID	6th Jun 2023
2401:6e0::/32	4.3B × /64	APNIC	PW	6th Jun 2023
2401:700::/32	4.3B × /64	APNIC	AU	6th Jun 2011
2401:7020::/32	4.3B × /64	APNIC	IN	1st Jan 2024
2401:7040::/32	4.3B × /64	APNIC	JP	27th Jun 2017
2401:7080::/32	4.3B × /64	APNIC	TW	19th Aug 2014
2401:70e0::/32	4.3B × /64	APNIC	CN	2nd Jan 2024
2401:7100::/32	4.3B × /64	APNIC	AU	5th Jul 2011
2401:7120::/32	4.3B × /64	APNIC	MN	2nd Jan 2024
2401:7160::/32	4.3B × /64	APNIC	VN	3rd Jan 2024
2401:7180::/32	4.3B × /64	APNIC	CN	21st Aug 2014
2401:71a0::/32	4.3B × /64	APNIC	VN	3rd Jan 2024
2401:7220::/32	4.3B × /64	APNIC	VN	3rd Jan 2024
2401:7240::/32	4.3B × /64	APNIC	CN	29th Jun 2017
2401:7260::/32	4.3B × /64	APNIC	VN	3rd Jan 2024
2401:72a0::/32	4.3B × /64	APNIC	BD	4th Jan 2024
2401:72c0::/32	4.3B × /64	APNIC	AU	29th Jun 2017
2401:7300::/32	4.3B × /64	APNIC	AU	5th Jul 2011
2401:7320::/32	4.3B × /64	APNIC	CN	5th Jan 2024
2401:7360::/32	4.3B × /64	APNIC	CN	10th Jan 2024
2401:7380::/32	4.3B × /64	APNIC	AU	22nd Aug 2014
2401:73a0::/32	4.3B × /64	APNIC	CN	10th Jan 2024
2401:73e0::/32	4.3B × /64	APNIC	IN	10th Jan 2024
2401:7401::/32	4.3B × /64	APNIC	SG	7th Jun 2012
2401:7440::/32	4.3B × /64	APNIC	AU	30th Jun 2017
2401:7460::/32	4.3B × /64	APNIC	BD	12th Jan 2024
2401:74c0::/32	4.3B × /64	APNIC	NP	30th Jun 2017
2401:7540::/32	4.3B × /64	APNIC	KH	2nd Jul 2017
2401:7580::/32	4.3B × /64	APNIC	CN	26th Aug 2014
2401:75e0::/32	4.3B × /64	APNIC	VN	15th Jan 2024
2401:7680::/32	4.3B × /64	APNIC	CN	26th Aug 2014
2401:76a0::/31	8.6B × /64	APNIC	SE	16th Jan 2024
2401:76c0::/32	4.3B × /64	APNIC	IN	4th Jul 2017
2401:76e0::/32	4.3B × /64	APNIC	AU	17th Jan 2024
2401:7720::/32	4.3B × /64	APNIC	IN	17th Jan 2024
2401:7780::/32	4.3B × /64	APNIC	CN	26th Aug 2014
2401:77a0::/32	4.3B × /64	APNIC	VN	17th Jan 2024
2401:77e0::/32	4.3B × /64	APNIC	CN	18th Jan 2024
2401:7820::/32	4.3B × /64	APNIC	CN	18th Jan 2024
2401:7860::/32	4.3B × /64	APNIC	PK	18th Jan 2024
2401:7880::/32	4.3B × /64	APNIC	CN	26th Aug 2014