Authorized Ad Exchanges Index

Currently tracking 1,424 authorized ad exchanges

We index and track 1,424 unique ad networks authorized by publishers across the web. Publishers authorize these ad networks by listing the ad domain in the publisher's ads.txt file. What is ads.txt?

Domains listed below are the canonical domain name of the SSP, exchange, header wrapper, or other advertising system that bidders connect to in a real-time bidding system.

You can browse the list of ad exchanges below or download the complete ads.txt aggregate file and analyze the data yourself.

Authorized Ad Exchanges Results 1 to 50 of 1,424
# Ad Exchange Unique Publishers Market Coverage
1 google.com 194,213 97.97%
2 appnexus.com 116,640 58.84%
3 rubiconproject.com 115,159 58.09%
4 pubmatic.com 112,769 56.89%
5 openx.com 110,414 55.7%
6 indexexchange.com 107,086 54.02%
7 contextweb.com 98,719 49.8%
8 advertising.com 98,220 49.55%
9 adtech.com 92,889 46.86%
10 freewheel.tv 91,642 46.23%
11 spotxchange.com 81,609 41.17%
12 spotx.tv 80,644 40.68%
13 districtm.io 80,350 40.53%
14 aolcloud.net 78,828 39.77%
15 gumgum.com 76,316 38.5%
16 rhythmone.com 76,289 38.49%
17 emxdgt.com 75,635 38.16%
18 sovrn.com 74,431 37.55%
19 smartadserver.com 67,432 34.02%
20 teads.tv 67,008 33.8%
21 coxmt.com 66,926 33.76%
22 lkqd.net 63,723 32.15%
23 lijit.com 63,309 31.94%
24 33across.com 61,489 31.02%
25 criteo.com 60,576 30.56%
26 tremorhub.com 60,160 30.35%
27 aps.amazon.com 58,363 29.44%
28 aol.com 53,742 27.11%
29 lkqd.com 53,655 27.07%
30 improvedigital.com 53,167 26.82%
31 sonobi.com 51,843 26.15%
32 adform.com 48,391 24.41%
33 fyber.com 47,815 24.12%
34 media.net 47,184 23.8%
35 beachfront.com 46,199 23.31%
36 adyoulike.com 41,430 20.9%
37 springserve.com 38,822 19.58%
38 yldbt.com 36,564 18.45%
39 conversantmedia.com 31,926 16.11%
40 taboola.com 31,112 15.69%
41 admixer.net 30,297 15.28%
42 smaato.com 28,460 14.36%
43 outbrain.com 27,800 14.02%
44 smartclip.net 26,344 13.29%
45 yahoo.com 25,319 12.77%
46 video.unrulymedia.com 23,228 11.72%
47 sekindo.com 23,051 11.63%
48 triplelift.com 22,213 11.21%
49 tribalfusion.com 21,271 10.73%
50 synacor.com 21,262 10.73%