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It is also a snapshot, not a history: a block announced yesterday and withdrawn this morning appears here today.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

Unannounced blocks in United States

26,283 blocks match, ordered by prefix.

Allocated but unannounced blocks, 22301 to 22350 of 26283
Prefix	Addresses	Registry	Country	Allocated
2605:77c0::/32	4.3B × /64	ARIN	US	31st Oct 2019
2605:7840::/32	4.3B × /64	ARIN	US	5th Nov 2019
2605:7880::/32	4.3B × /64	ARIN	US	28th May 2014
2605:78c0::/32	4.3B × /64	ARIN	US	5th Nov 2019
2605:7a00::/32	4.3B × /64	ARIN	US	5th Jan 2011
2605:7a40::/32	4.3B × /64	ARIN	US	6th Nov 2019
2605:7ac0::/32	4.3B × /64	ARIN	US	11th Nov 2019
2605:7cc0::/32	4.3B × /64	ARIN	US	20th Nov 2019
2605:7dc0::/32	4.3B × /64	ARIN	US	22nd Nov 2019
2605:7ec0::/32	4.3B × /64	ARIN	US	22nd Nov 2019
2605:7f00::/32	4.3B × /64	ARIN	US	24th Mar 2026
2605:8080::/36	268M × /64	ARIN	US	5th Jun 2014
2605:8140::/32	4.3B × /64	ARIN	US	4th Dec 2019
2605:81c0::/32	4.3B × /64	ARIN	US	10th Dec 2019
2605:82c0::/32	4.3B × /64	ARIN	US	10th Dec 2019
2605:840::/32	4.3B × /64	ARIN	US	5th Nov 2018
2605:8440::/32	4.3B × /64	ARIN	US	10th Dec 2019
2605:8500::/32	4.3B × /64	ARIN	US	27th Jul 2011
2605:8540::/32	4.3B × /64	ARIN	US	12th Dec 2019
2605:8580::/32	4.3B × /64	ARIN	US	11th Jun 2014
2605:85c0::/32	4.3B × /64	ARIN	US	13th Dec 2019
2605:8680::/28	68.7B × /64	ARIN	US	17th Jun 2014
2605:86c0::/32	4.3B × /64	ARIN	US	17th Dec 2019
2605:8700::/32	4.3B × /64	ARIN	US	28th Jul 2011
2605:8740::/28	68.7B × /64	ARIN	US	17th Dec 2019
2605:8800::/32	4.3B × /64	ARIN	US	3rd May 2010
2605:8880::/32	4.3B × /64	ARIN	US	20th Jun 2014
2605:88c0::/32	4.3B × /64	ARIN	US	18th Dec 2019
2605:8980::/32	4.3B × /64	ARIN	US	23rd Jun 2014
2605:89c0::/32	4.3B × /64	ARIN	US	19th Dec 2019
2605:8a00::/32	4.3B × /64	ARIN	US	6th Jan 2011
2605:8a80::/32	4.3B × /64	ARIN	US	24th Jun 2014
2605:8b00::/32	4.3B × /64	ARIN	US	29th Jul 2011
2605:8b80::/32	4.3B × /64	ARIN	US	24th Jun 2014
2605:8c00::/32	4.3B × /64	ARIN	US	11th Aug 2010
2605:8c0::/32	4.3B × /64	ARIN	US	5th Nov 2018
2605:8d00::/32	4.3B × /64	ARIN	US	29th Jul 2011
2605:8e40::/32	4.3B × /64	ARIN	US	2nd Jan 2020
2605:8ec0::/32	4.3B × /64	ARIN	US	8th Jan 2020
2605:8f00::/32	4.3B × /64	ARIN	US	31st Mar 2026
2605:8f80::/32	4.3B × /64	ARIN	US	30th Jun 2014
2605:9040::/32	4.3B × /64	ARIN	US	8th Jan 2020
2605:9200::/32	4.3B × /64	ARIN	US	7th Jan 2011
2605:9380::/32	4.3B × /64	ARIN	US	15th Jul 2014
2605:93c0::/32	4.3B × /64	ARIN	US	13th Jan 2020
2605:94c0::/32	4.3B × /64	ARIN	US	15th Jan 2020
2605:9540::/32	4.3B × /64	ARIN	US	16th Jan 2020
2605:9580::/32	4.3B × /64	ARIN	US	18th Jul 2014
2605:9700::/32	4.3B × /64	ARIN	US	2nd Aug 2011
2605:97c0::/32	4.3B × /64	ARIN	US	22nd Jan 2020