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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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, 17501 to 17550 of 22580
Prefix	Addresses	Registry	Country	Allocated
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:f960::/32	4.3B × /64	APNIC	SG	25th Mar 2025
2401:f980::/32	4.3B × /64	APNIC	ID	29th Jan 2015
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
2401:fc60::/32	4.3B × /64	APNIC	CN	9th Apr 2025
2401:fc80::/32	4.3B × /64	APNIC	CN	2nd Feb 2015
2401:fca0::/32	4.3B × /64	APNIC	IN	9th Apr 2025
2401:fd00::/32	4.3B × /64	APNIC	MY	19th Sept 2011
2401:fd21::/32	4.3B × /64	APNIC	HK	15th Apr 2026
2401:fd22::/31	8.6B × /64	APNIC	HK	15th Apr 2026
2401:fda0::/32	4.3B × /64	APNIC	BD	11th Apr 2025
2401:fe00::/32	4.3B × /64	APNIC	AU	3rd May 2010
2401:fe0::/32	4.3B × /64	APNIC	VN	23rd Jun 2023
2401:fe20::/32	4.3B × /64	APNIC	BT	15th Apr 2025
2401:fe60::/32	4.3B × /64	APNIC	HK	16th Apr 2025
2401:fea0::/32	4.3B × /64	APNIC	MM	16th Apr 2025
2401:ffc0::/32	4.3B × /64	APNIC	CN	16th Nov 2017
2402:1000::/32	4.3B × /64	APNIC	CN	2nd Nov 2007
2402:1020::/32	4.3B × /64	APNIC	IN	10th Jun 2025
2402:1040::/32	4.3B × /64	APNIC	PK	24th Nov 2017
2402:1080::/32	4.3B × /64	APNIC	IN	19th Feb 2015
2402:10c0::/32	4.3B × /64	APNIC	AU	25th Nov 2017
2402:1140::/32	4.3B × /64	APNIC	AU	25th Nov 2017
2402:1160::/32	4.3B × /64	APNIC	CN	13th Jun 2025
2402:11c0::/32	4.3B × /64	APNIC	HK	27th Nov 2017
2402:11e0::/32	4.3B × /64	APNIC	IN	23rd Jun 2025
2402:1220::/32	4.3B × /64	APNIC	NU	24th Jun 2025
2402:1240::/32	4.3B × /64	APNIC	HK	27th Nov 2017
2402:12a0::/32	4.3B × /64	APNIC	IN	26th Jun 2025
2402:12e0::/32	4.3B × /64	APNIC	ID	27th Jun 2025
2402:1300::/32	4.3B × /64	APNIC	AU	29th Sept 2011
2402:1320::/32	4.3B × /64	APNIC	PK	27th Jun 2025
2402:1340::/32	4.3B × /64	APNIC	BD	27th Nov 2017
2402:1360::/32	4.3B × /64	APNIC	TW	30th Jun 2025
2402:13a0::/32	4.3B × /64	APNIC	TW	30th Jun 2025
2402:13c0::/32	4.3B × /64	APNIC	AU	27th Nov 2017
2402:13e0::/32	4.3B × /64	APNIC	IN	2nd Jul 2025
2402:14a0::/32	4.3B × /64	APNIC	PK	4th Jul 2025
2402:14c0::/32	4.3B × /64	APNIC	CN	27th Nov 2017
2402:14e0::/32	4.3B × /64	APNIC	IN	4th Jul 2025
2402:1520::/32	4.3B × /64	APNIC	CN	7th Jul 2025
2402:1540::/32	4.3B × /64	APNIC	HK	27th Nov 2017
2402:15e0::/32	4.3B × /64	APNIC	PH	8th Jul 2025