Resource Hints: dns-prefetch

Gives a hint to the browser to perform a DNS lookup in the background to improve performance. This is indicated using <link rel="dns-prefetch" href="https://example.com/">

Spec	https://www.w3.org/TR/resource-hints/#dns-prefetch
Status	W3C Working Draft

IE	Edge	Firefox	Chrome	Safari	Opera
			103
		100 ⁽²⁾	102
		99 ⁽²⁾	101	TP
11	99	98 ⁽²⁾	100	15.4	83
10	98	97 ⁽²⁾	99	15.2-15.3	82
9 ⁽¹⁾	97	96 ⁽²⁾	98	15.1	81
8	96	95 ⁽²⁾	97	15	80
Show all
7	95	94 ⁽²⁾	96	14.1	79
6	94	93 ⁽²⁾	95	14	78
5.5	93	92 ⁽²⁾	94	13.1	77
	92	91 ⁽²⁾	93	13	76
	91	90 ⁽²⁾	92	12.1	75
	90	89 ⁽²⁾	91	12	74
	89	88 ⁽²⁾	90	11.1	73
	88	87 ⁽²⁾	89	11	72
	87	86 ⁽²⁾	88	10.1	71
	86	85 ⁽²⁾	87	10	70
	85	84 ⁽²⁾	86	9.1	69
	84	83 ⁽²⁾	85	9	68
	83	82 ⁽²⁾	84	8	67
	81	81 ⁽²⁾	83	7.1	66
	80	80 ⁽²⁾	81	7	65
	79	79 ⁽²⁾	80	6.1	64
	18	78 ⁽²⁾	79	6	63
	17	77 ⁽²⁾	78	5.1	62
	16	76 ⁽²⁾	77	5	60
	15	75 ⁽²⁾	76	4	58
	14	74 ⁽²⁾	75	3.2	57
	13	73 ⁽²⁾	74	3.1	56
	12	72 ⁽²⁾	73		55
		71 ⁽²⁾	72		54
		70 ⁽²⁾	71		53
		69 ⁽²⁾	70		52
		68 ⁽²⁾	69		51
		67 ⁽²⁾	68		50
		66 ⁽²⁾	67		49
		65 ⁽²⁾	66		48
		64 ⁽²⁾	65		47
		63 ⁽²⁾	64		46
		62 ⁽²⁾	63		45
		61 ⁽²⁾	62		44
		60 ⁽²⁾	61		43
		59 ⁽²⁾	60		42
		58 ⁽²⁾	59		41
		57 ⁽²⁾	58		40
		56 ⁽²⁾	57		39
		55 ⁽²⁾	56		38
		54 ⁽²⁾	55		37
		53 ⁽²⁾	54		36
		52 ⁽²⁾	53		35
		51 ⁽²⁾	52		34
		50 ⁽²⁾	51		33
		49 ⁽²⁾	50		32
		48 ⁽²⁾	49		31
		47 ⁽²⁾	48		30
		46 ⁽²⁾	47		29
		45 ⁽²⁾	46		28
		44 ⁽²⁾	45		27
		43 ⁽²⁾	44		26
		42 ⁽²⁾	43		25
		41 ⁽²⁾	42		24
		40 ⁽²⁾	41		23
		39 ⁽²⁾	40		22
		38 ⁽²⁾	39		21
		37 ⁽²⁾	38		20
		36 ⁽²⁾	37		19
		35 ⁽²⁾	36		18
		34 ⁽²⁾	35		17
		33 ⁽²⁾	34		16
		32 ⁽²⁾	33		15
		31 ⁽²⁾	32		12.1
		30 ⁽²⁾	31		12
		29 ⁽²⁾	30		11.6
		28 ⁽²⁾	29		11.5
		27 ⁽²⁾	28		11.1
		26 ⁽²⁾	27		11
		25 ⁽²⁾	26		10.6
		24 ⁽²⁾	25		10.5
		23 ⁽²⁾	24		10.0-10.1
		22 ⁽²⁾	23		9.5-9.6
		21 ⁽²⁾	22		9
		20 ⁽²⁾	21
		19 ⁽²⁾	20
		18 ⁽²⁾	19
		17 ⁽²⁾	18
		16 ⁽²⁾	17
		15 ⁽²⁾	16
		14 ⁽²⁾	15
		13 ⁽²⁾	14
		12 ⁽²⁾	13
		11 ⁽²⁾	12
		10 ⁽²⁾	11
		9 ⁽²⁾	10
		8 ⁽²⁾	9
		7 ⁽²⁾	8
		6 ⁽²⁾	7
		5 ⁽²⁾	6
		4 ⁽²⁾	5
		3.6 ⁽²⁾	4
		3.5 ⁽²⁾
		3
		2

Safari on iOS	Opera Mini	Android Browser	Blackberry Browser	Opera Mobile	Android Chrome	Android Firefox	IE Mobile	Android UC Browser	Samsung Internet	QQ Browser	Baidu Browser	KaiOS Browser
15.4	all	99	10	64	100	98	11	12.12	16.0	10.4	7.12	2.5
15.2-15.3		4.4.3-4.4.4	7	12.1			10		15.0
15.0-15.1		4.4		12					14.0
14.5-14.8		4.2-4.3		11.5					13.0
Show all
14.0-14.4		4.1		11.1					12.0
13.4-13.7		4		11					11.1-11.2
13.3		3		10					10.1
13.2		2.3							9.2
13.0-13.1		2.2							8.2
12.2-12.5		2.1							7.2-7.4
12.0-12.1									6.2-6.4
11.3-11.4									5.0-5.4
11.0-11.2									4
10.3
10.0-10.2
9.3
9.0-9.2
8.1-8.4
8
7.0-7.1
6.0-6.1
5.0-5.1
4.2-4.3
4.0-4.1
3.2

Notes

IE9 supported dns-prefetch as prefetch as the former wasn’t defined yet.
Firefox only supports dns-prefetch on HTTP origins. HTTPS is unsupported.

Bugs

Firefox only performs dns-prefetch on HTTP origins. The feature is disabled on HTTPS.

Resources

Data by caniuse.com
Licensed under the Creative Commons Attribution License v4.0.
https://caniuse.com/link-rel-dns-prefetch

Name	Support Tables
Version
Badge
Last Updated	2022-04-11T17:49:08Z