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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

337 blocks match, ordered by prefix.

Allocated but unannounced blocks, 201 to 250 of 337
Prefix	Addresses	Registry	Country	Allocated
2401:4860::/32	4.3B × /64	APNIC	TW	20th Oct 2023
2401:4ca0::/32	4.3B × /64	APNIC	TW	1st Nov 2023
2401:5220::/32	4.3B × /64	APNIC	TW	23rd Nov 2023
2401:5e00::/32	4.3B × /64	APNIC	TW	12th Apr 2010
2401:7080::/32	4.3B × /64	APNIC	TW	19th Aug 2014
2401:7ba0::/32	4.3B × /64	APNIC	TW	30th Jan 2024
2401:83a0::/32	4.3B × /64	APNIC	TW	27th Feb 2024
2401:83e0::/32	4.3B × /64	APNIC	TW	27th Feb 2024
2401:8420::/32	4.3B × /64	APNIC	TW	29th Feb 2024
2401:88a0::/32	4.3B × /64	APNIC	TW	12th Mar 2024
2401:b4a0::/32	4.3B × /64	APNIC	TW	17th Jul 2024
2401:b9a0::/32	4.3B × /64	APNIC	TW	8th Aug 2024
2401:ba60::/32	4.3B × /64	APNIC	TW	12th Aug 2024
2401:c620::/32	4.3B × /64	APNIC	TW	23rd Sept 2024
2401:cae0::/32	4.3B × /64	APNIC	TW	8th Oct 2024
2401:cd60::/32	4.3B × /64	APNIC	TW	15th Oct 2024
2401:e8a0::/32	4.3B × /64	APNIC	TW	10th Jan 2025
2401:eea0::/32	4.3B × /64	APNIC	TW	13th Feb 2025
2401:f120::/32	4.3B × /64	APNIC	TW	19th Feb 2025
2402:1360::/32	4.3B × /64	APNIC	TW	30th Jun 2025
2402:13a0::/32	4.3B × /64	APNIC	TW	30th Jun 2025
2402:22e0::/32	4.3B × /64	APNIC	TW	12th Aug 2025
2402:2580::/32	4.3B × /64	APNIC	TW	17th Mar 2015
2402:2860::/32	4.3B × /64	APNIC	TW	9th Sept 2025
2402:28a0::/32	4.3B × /64	APNIC	TW	9th Sept 2025
2402:28e0::/32	4.3B × /64	APNIC	TW	9th Sept 2025
2402:2e20::/32	4.3B × /64	APNIC	TW	25th Sept 2025
2402:30a0::/32	4.3B × /64	APNIC	TW	7th Oct 2025
2402:32a0::/32	4.3B × /64	APNIC	TW	16th Oct 2025
2402:3560::/32	4.3B × /64	APNIC	TW	30th Oct 2025
2402:4a0::/32	4.3B × /64	APNIC	TW	28th Apr 2025
2402:55a0::/32	4.3B × /64	APNIC	TW	9th Apr 2026
2402:5ca0::/32	4.3B × /64	APNIC	TW	7th May 2026
2402:5da0::/32	4.3B × /64	APNIC	TW	12th May 2026
2402:6ce0::/32	4.3B × /64	APNIC	TW	10th Aug 2026
2402:6d20::/32	4.3B × /64	APNIC	TW	10th Aug 2026
2402:7160::/32	4.3B × /64	APNIC	TW	24th Aug 2026
2402:74e0::/32	4.3B × /64	APNIC	TW	8th Sept 2026
2402:b20::/32	4.3B × /64	APNIC	TW	15th May 2025
2402:ca0::/32	4.3B × /64	APNIC	TW	23rd May 2025
2403:11c0::/32	4.3B × /64	APNIC	TW	17th Jun 2018
2403:2640::/32	4.3B × /64	APNIC	TW	5th Jul 2018
2403:80c0::/32	4.3B × /64	APNIC	TW	6th Sept 2018
2403:8140::/32	4.3B × /64	APNIC	TW	6th Sept 2018
2403:84c0::/32	4.3B × /64	APNIC	TW	7th Sept 2018
2403:8640::/32	4.3B × /64	APNIC	TW	10th Sept 2018
2403:8bc0::/32	4.3B × /64	APNIC	TW	12th Sept 2018
2403:8f40::/32	4.3B × /64	APNIC	TW	17th Sept 2018
2403:93c0::/32	4.3B × /64	APNIC	TW	19th Sept 2018
2403:95c0::/32	4.3B × /64	APNIC	TW	19th Sept 2018