Ahrefs by the numbers

The Ahrefs team takes great pride in collecting, processing and storing large amounts of data for search marketing professionals.

We crawl the entire web 24/7 (much like search engines do) storing petabytes of information about live websites — how they link to each other and what keywords they rank for in search results.

We process large amounts of clickstream data to maintain the world's largest third-party database of search queries, with estimated monthly search volume and advanced keyword research metrics.

We're proud of our backend infrastructure. All existing solutions couldn't keep up with the volume of data that we operate, so we had to custom build the larger part of our software infrastructure in-house.

2.1K Servers

65K CPU cores
369TB RAM
47PB HDD
7PB SSD

Content index

Our content index is basically a mini search engine. You can search for any word and we'll return all the pages mentioning that word with our useful SEO metrics attached to them.

Every 24 hours we discover

1.8 million new pages
Every 24 hours we update metrics for

72 million pages
Total content index size

1.1 billion pages
Full update

Every month

Keyword index

Keyword index is a huge database of search queries (across 10 different search engines) that you can browse and research what your prospective customers are looking for online.

7.9 billion keywords. 10 search engines. 171 countries

Google

5.1B
Youtube

642.7M
Amazon

124.9M
Bing

92.2M
Yahoo

133.9M
Yandex

72.1M
Baidu

2.7M
Daum

1.5M
Naver

14.2M
Seznam

7M

7.9 billion keywords

3.3 B United States
545 M Brazil
361 M France
329 M United Kingdom
198 M Germany
192 M Spain
185 M Poland
169 M Italy
145 M Russian Federation
143 M Mexico
140 M Canada
127 M Argentina
118 M Japan
117 M India
107 M Colombia
101 M Australia
82 M Ukraine
63 M Indonesia
61 M Chile
59 M Turkey
53 M Czech Republic
51 M Venezuela
50 M Philippines
49 M Netherlands
48 M Taiwan
46 M Belgium
43 M Peru
39 M Hungary
39 M Greece
36 M Ecuador
32 M Romania
32 M Finland
29 M Pakistan
29 M Portugal
28 M Vietnam
28 M Sweden
28 M Egypt
27 M Malaysia
25 M Algeria
24 M Thailand
24 M South Africa
23 M Morocco
23 M Norway
22 M Austria
22 M Korea
21 M New Zealand
21 M Switzerland
19 M Serbia
19 M Denmark
18 M Slovakia
18 M Bulgaria
16 M Saudi Arabia
15 M Israel
15 M Croatia
15 M Hong Kong
14 M Bolivia
14 M Belarus
14 M Uruguay
14 M Ireland
13 M Singapore
12 M Tunisia
12 M Kazakhstan
11 M Dominican Republic
11 M Costa Rica
9.2 M Lithuania
8.8 M Slovenia
8.4 M Guatemala
8.3 M Bangladesh
8.1 M Sri Lanka
7.5 M United Arab Emirates
6.6 M Bosnia & Herzegovina
6.6 M Panama
6.5 M El Salvador
6.3 M Latvia
6.3 M Nigeria
6.1 M Paraguay
6 M Estonia
5.4 M Moldova
4.9 M Honduras
3.9 M Azerbaijan
3.7 M Kenya
3.5 M Puerto Rico
3.4 M Armenia
3.3 M Trinidad And Tobago
3 M Jordan
3 M Mauritius
2.8 M Reunion
2.7 M Jamaica
2.7 M Macedonia
2.7 M Georgia
2.7 M Nicaragua
2.5 M Iraq
2.2 M Ghana
2.1 M Palestinian Territory
1.8 M Malta
1.8 M Albania
1.7 M Qatar
1.7 M Cyprus
1.7 M Lebanon
1.7 M Nepal
1.6 M Zimbabwe
1.5 M Madagascar
1.5 M Luxembourg
1.5 M Côte d'Ivoire
1.4 M Cameroon
1.4 M Kuwait
1.3 M Oman
1.2 M Senegal
1.2 M Angola
1.1 M Iceland
1.1 M Guadeloupe
1.1 M Montenegro
1 M Martinique
974 K Cambodia
961 K Tanzania
961 K Yemen
955 K Bahrain
879 K Kyrgyzstan
793 K Mozambique
786 K Libya
768 K New Caledonia
688 K Mongolia
659 K Ethiopia
564 K Zambia
526 K Namibia
524 K Brunei Darussalam
510 K Haiti
504 K Fiji
496 K French Polynesia
491 K French Guiana
475 K Guyana
381 K Belize
377 K Botswana
357 K Bahamas
329 K Gabon
308 K Afghanistan
300 K Congo, Democratic Republic
280 K Maldives
260 K Suriname
255 K Mayotte
250 K Cape Verde
241 K Guam
203 K Saint Lucia
200 K Rwanda
190 K Antigua And Barbuda
186 K Benin
180 K Laos
179 K Andorra
158 K Saint Vincent And Grenadines
150 K Burkina Faso
149 K Aruba
135 K Grenada
133 K Tajikistan
122 K Togo
114 K Malawi
112 K Djibouti
110 K Congo
98 K Mauritania
93 K Monaco
93 K Seychelles
93 K Bhutan
92 K Guinea
91 K Saint Kitts And Nevis
90 K Cayman Islands
86 K Mali
79 K Faroe Islands
72 K Virgin Islands, U.S.
61 K Gibraltar
46 K Niger
24 K Equatorial Guinea

Search traffic index

Search Traffic index is a database of search queries that we use to approximate the search traffic that any website or URL has, and show you the actual keywords that it ranks for.

483 million keywords. 155 countries

154 M United States
25 M Japan
21 M Germany
21 M United Kingdom
20 M France
17 M Brazil
17 M Canada
17 M India
16 M Australia
14 M Italy
13 M Russian Federation
11 M Spain
10 M Turkey
9.5 M Poland
9.1 M Mexico
8.5 M Indonesia
6 M Netherlands
5.3 M Ukraine
5 M Vietnam
4.9 M Argentina
4.2 M Thailand
3.8 M Colombia
3.5 M Sweden
3.1 M Taiwan
3 M Philippines
2.8 M Chile
2.4 M Venezuela
2.3 M Austria
2.2 M Denmark
2.1 M Czech Republic
2 M Peru
2 M Greece
1.9 M Israel
1.9 M Belgium
1.9 M Egypt
1.7 M Hungary
1.7 M Pakistan
1.6 M Singapore
1.6 M Malaysia
1.5 M Norway
1.5 M Romania
1.5 M Hong Kong
1.5 M Korea
1.4 M Finland
1.3 M Portugal
1.2 M South Africa
1.2 M New Zealand
1.2 M Algeria
1.1 M Saudi Arabia
1.1 M Ecuador
1.1 M Switzerland
979 K Morocco
862 K Bulgaria
789 K Serbia
770 K Slovakia
696 K Ireland
625 K Croatia
563 K Kazakhstan
543 K Belarus
539 K United Arab Emirates
429 K Bangladesh
417 K Uruguay
410 K Dominican Republic
410 K Sri Lanka
408 K Tunisia
407 K Bolivia
400 K Lithuania
362 K Costa Rica
347 K Slovenia
329 K Nigeria
329 K Guatemala
270 K Iraq
255 K Azerbaijan
247 K Bosnia & Herzegovina
233 K Latvia
232 K Kenya
230 K Panama
224 K Estonia
211 K El Salvador
193 K Paraguay
189 K Jordan
182 K Moldova
174 K Puerto Rico
163 K Honduras
163 K Georgia
162 K Armenia
123 K Ghana
121 K Jamaica
120 K Trinidad And Tobago
113 K Palestinian Territory
109 K Qatar
106 K Macedonia
106 K Lebanon
100 K Kuwait
97 K Mauritius
96 K Nicaragua
96 K Nepal
87 K Albania
81 K Cyprus
78 K Oman
75 K Tanzania
75 K Côte d'Ivoire
66 K Malta
60 K Senegal
59 K Kyrgyzstan
59 K Luxembourg
59 K Cameroon
57 K Cambodia
51 K Angola
51 K Bahrain
50 K Libya
49 K Iceland
45 K Guadeloupe
45 K Zimbabwe
41 K Mozambique
41 K Mongolia
41 K Montenegro
39 K Madagascar
38 K Ethiopia
25 K Haiti
25 K Namibia
25 K Zambia
21 K Brunei Darussalam
20 K Fiji
18 K Afghanistan
17 K Bahamas
17 K Laos
16 K Guyana
16 K Suriname
15 K Congo, Democratic Republic
15 K Botswana
15 K Maldives
14 K Gabon
14 K Tajikistan
12 K Rwanda
12 K Belize
11 K Burkina Faso
9.4 K Benin
9.4 K Congo
9.3 K Cape Verde
8.4 K Mali
7.7 K Togo
6.9 K Saint Vincent And Grenadines
6.7 K Bhutan
6.3 K Andorra
5.9 K Antigua And Barbuda
5.6 K Malawi
5.6 K Niger
4.7 K Djibouti
3.8 K Virgin Islands, U.S.
3.5 K Seychelles
3.2 K Gibraltar
5 New Caledonia
2 Mauritania
1 Monaco

Backlink index

Ahrefs boasts the world's largest index of live backlinks. We update it with fresh data every 15-30 minutes. We use backlink data to calculate our proprietary metrics: Ahrefs Rank, Domain Rating and URL Rating.

Domains (post-vetting)

Pages in index

Internal backlinks

External backlinks