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.

7.6 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

7.6 billion keywords

3.2 B United States
526 M Brazil
350 M France
321 M United Kingdom
190 M Germany
184 M Spain
179 M Poland
162 M Italy
141 M Russian Federation
140 M Mexico
136 M Canada
121 M Argentina
114 M Japan
113 M India
104 M Colombia
98 M Australia
79 M Ukraine
60 M Indonesia
59 M Chile
57 M Turkey
50 M Czech Republic
50 M Venezuela
49 M Philippines
48 M Netherlands
45 M Taiwan
44 M Belgium
42 M Peru
38 M Hungary
37 M Greece
34 M Ecuador
31 M Romania
31 M Finland
28 M Pakistan
28 M Vietnam
27 M Portugal
27 M Sweden
26 M Egypt
26 M Malaysia
24 M Algeria
23 M Norway
23 M Morocco
22 M Thailand
22 M South Africa
21 M Austria
21 M Korea
21 M New Zealand
20 M Switzerland
19 M Serbia
18 M Denmark
18 M Slovakia
17 M Bulgaria
16 M Saudi Arabia
14 M Croatia
14 M Israel
14 M Hong Kong
14 M Bolivia
14 M Belarus
13 M Uruguay
13 M Ireland
12 M Singapore
12 M Tunisia
11 M Kazakhstan
11 M Dominican Republic
10 M Costa Rica
9 M Lithuania
8.4 M Slovenia
7.9 M Guatemala
7.8 M Sri Lanka
7.8 M Bangladesh
7.1 M United Arab Emirates
6.4 M Bosnia & Herzegovina
6.4 M Panama
6.2 M El Salvador
6.2 M Latvia
6.1 M Nigeria
5.9 M Paraguay
5.8 M Estonia
5.3 M Moldova
4.7 M Honduras
3.8 M Azerbaijan
3.6 M Kenya
3.3 M Puerto Rico
3.3 M Armenia
3.1 M Trinidad And Tobago
2.9 M Jordan
2.9 M Mauritius
2.7 M Reunion
2.6 M Macedonia
2.6 M Nicaragua
2.6 M Jamaica
2.5 M Georgia
2.4 M Iraq
2.1 M Ghana
2.1 M Palestinian Territory
1.7 M Malta
1.7 M Albania
1.6 M Lebanon
1.6 M Qatar
1.6 M Cyprus
1.6 M Nepal
1.5 M Zimbabwe
1.4 M Madagascar
1.4 M Luxembourg
1.4 M Côte d'Ivoire
1.4 M Kuwait
1.4 M Cameroon
1.3 M Oman
1.1 M Senegal
1.1 M Angola
1.1 M Iceland
1.1 M Montenegro
1 M Guadeloupe
982 K Martinique
939 K Cambodia
926 K Yemen
913 K Tanzania
907 K Bahrain
847 K Kyrgyzstan
772 K Mozambique
760 K Libya
749 K New Caledonia
650 K Mongolia
609 K Ethiopia
530 K Zambia
506 K Namibia
497 K Brunei Darussalam
484 K Haiti
482 K French Polynesia
473 K French Guiana
468 K Fiji
451 K Guyana
358 K Belize
352 K Botswana
336 K Bahamas
311 K Gabon
294 K Afghanistan
284 K Congo, Democratic Republic
271 K Maldives
245 K Suriname
244 K Mayotte
237 K Cape Verde
229 K Guam
195 K Saint Lucia
181 K Rwanda
180 K Antigua And Barbuda
175 K Benin
172 K Andorra
171 K Laos
150 K Saint Vincent And Grenadines
143 K Burkina Faso
142 K Aruba
128 K Tajikistan
126 K Grenada
112 K Togo
109 K Malawi
107 K Djibouti
105 K Congo
95 K Mauritania
91 K Monaco
89 K Guinea
89 K Saint Kitts And Nevis
88 K Seychelles
87 K Cayman Islands
86 K Bhutan
83 K Mali
75 K Faroe Islands
67 K Virgin Islands, U.S.
58 K Gibraltar
45 K Niger
22 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.

478 million keywords. 155 countries

154 M United States
25 M Japan
21 M Germany
20 M United Kingdom
20 M France
17 M Brazil
17 M Canada
16 M India
16 M Australia
14 M Italy
12 M Russian Federation
11 M Spain
10 M Turkey
9.5 M Poland
9 M Mexico
8.4 M Indonesia
6 M Netherlands
5.2 M Ukraine
4.9 M Vietnam
4.8 M Argentina
4.1 M Thailand
3.8 M Colombia
3.5 M Sweden
3 M Taiwan
2.9 M Philippines
2.7 M Chile
2.4 M Venezuela
2.3 M Austria
2.2 M Denmark
2.1 M Czech Republic
2 M Peru
1.9 M Greece
1.9 M Israel
1.8 M Belgium
1.8 M Egypt
1.7 M Hungary
1.6 M Pakistan
1.6 M Singapore
1.5 M Malaysia
1.5 M Norway
1.5 M Romania
1.4 M Hong Kong
1.4 M Korea
1.4 M Finland
1.2 M Portugal
1.2 M South Africa
1.2 M New Zealand
1.2 M Algeria
1.1 M Ecuador
1.1 M Saudi Arabia
1 M Switzerland
962 K Morocco
842 K Bulgaria
769 K Serbia
754 K Slovakia
674 K Ireland
612 K Croatia
553 K Kazakhstan
529 K Belarus
521 K United Arab Emirates
414 K Uruguay
408 K Bangladesh
400 K Sri Lanka
400 K Bolivia
400 K Dominican Republic
399 K Tunisia
393 K Lithuania
354 K Costa Rica
341 K Slovenia
321 K Nigeria
321 K Guatemala
262 K Iraq
246 K Azerbaijan
242 K Bosnia & Herzegovina
230 K Latvia
227 K Panama
225 K Kenya
219 K Estonia
208 K El Salvador
189 K Paraguay
185 K Jordan
179 K Moldova
169 K Puerto Rico
161 K Honduras
158 K Armenia
155 K Georgia
119 K Ghana
117 K Jamaica
117 K Trinidad And Tobago
109 K Palestinian Territory
105 K Qatar
104 K Macedonia
104 K Lebanon
98 K Kuwait
96 K Mauritius
95 K Nicaragua
92 K Nepal
84 K Albania
79 K Cyprus
76 K Oman
73 K Tanzania
73 K Côte d'Ivoire
64 K Malta
58 K Luxembourg
58 K Senegal
58 K Kyrgyzstan
57 K Cameroon
55 K Cambodia
49 K Angola
49 K Bahrain
48 K Libya
47 K Iceland
44 K Guadeloupe
42 K Zimbabwe
41 K Mozambique
40 K Montenegro
39 K Mongolia
38 K Madagascar
36 K Ethiopia
25 K Namibia
25 K Haiti
24 K Zambia
21 K Brunei Darussalam
19 K Fiji
18 K Afghanistan
17 K Bahamas
17 K Laos
16 K Guyana
16 K Suriname
15 K Congo, Democratic Republic
14 K Maldives
14 K Botswana
13 K Tajikistan
13 K Gabon
12 K Rwanda
11 K Belize
10 K Burkina Faso
9.3 K Congo
9.1 K Benin
9 K Cape Verde
8.2 K Mali
7.4 K Togo
6.7 K Saint Vincent And Grenadines
6.5 K Bhutan
6.2 K Andorra
5.8 K Antigua And Barbuda
5.5 K Niger
5.4 K Malawi
4.5 K Djibouti
3.7 K Virgin Islands, U.S.
3.4 K Seychelles
3.1 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