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.

2000 Servers

64K CPU cores
400TB RAM
40PB+ HDD
10PB 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

948 million 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.

10.3 billion keywords. 10 search engines. 171 countries.

Google

8.8 B
YouTube

841 M
Yahoo

221 M
Amazon

159 M
Bing

136 M
Yandex

96 M
Naver

24 M
Seznam

8.5 M
Baidu

3.5 M
Daum

2.4 M

10.3 billion keywords

3.8 B United States
591 M Brazil
386 M France
349 M United Kingdom
215 M Germany
208 M Spain
199 M Poland
184 M Italy
157 M Mexico
154 M Russian Federation
150 M Canada
138 M Argentina
137 M Japan
129 M India
115 M Colombia
108 M Australia
89 M Ukraine
68 M Indonesia
66 M Chile
64 M Turkey
58 M Czechia
56 M Netherlands
56 M Philippines
53 M Venezuela
52 M Taiwan
50 M Belgium
48 M Peru
42 M Hungary
42 M Greece
38 M Ecuador
35 M Finland
34 M Romania
32 M Portugal
31 M Sweden
31 M Pakistan
30 M Vietnam
30 M Malaysia
30 M Egypt
27 M Thailand
26 M South Africa
26 M Algeria
25 M Morocco
25 M Korea
25 M Norway
24 M Austria
23 M Switzerland
22 M New Zealand
21 M Serbia
21 M Denmark
20 M Slovakia
19 M Bulgaria
18 M Saudi Arabia
17 M Israel
16 M Hong Kong
16 M Croatia
16 M Bolivia
15 M Belarus
15 M Ireland
15 M Uruguay
14 M Singapore
13 M Tunisia
13 M Kazakhstan
12 M Dominican Republic
12 M Costa Rica
10 M Lithuania
9.5 M Slovenia
9.2 M Guatemala
9.1 M Bangladesh
8.9 M Sri Lanka
8.2 M United Arab Emirates
7.3 M Panama
7.1 M Nigeria
7.1 M Bosnia & Herzegovina
7 M El Salvador
6.9 M Latvia
6.7 M Paraguay
6.6 M Estonia
5.8 M Moldova
5.4 M Honduras
4.4 M Kenya
4.1 M Azerbaijan
3.9 M Puerto Rico
3.7 M Trinidad And Tobago
3.6 M Armenia
3.3 M Jordan
3.3 M Mauritius
3 M Jamaica
3 M Reunion
3 M North Macedonia
3 M Nicaragua
2.9 M Georgia
2.7 M Iraq
2.4 M Ghana
2.3 M Palestinian Territory
2 M Malta
2 M Nepal
1.9 M Albania
1.9 M Lebanon
1.9 M Qatar
1.9 M Cyprus
1.7 M Madagascar
1.7 M Zimbabwe
1.7 M Luxembourg
1.6 M Kuwait
1.6 M Côte d'Ivoire
1.6 M Cameroon
1.5 M Oman
1.3 M Senegal
1.3 M Angola
1.3 M Iceland
1.2 M Montenegro
1.2 M Guadeloupe
1.1 M Cambodia
1.1 M Martinique
1.1 M Bahrain
1.1 M Tanzania
1 M Yemen
984 K Kyrgyzstan
868 K Mozambique
862 K Libya
836 K New Caledonia
805 K Mongolia
756 K Ethiopia
622 K Zambia
601 K Namibia
582 K Brunei Darussalam
569 K Fiji
560 K Haiti
542 K French Polynesia
526 K French Guiana
521 K Guyana
429 K Belize
425 K Botswana
398 K Bahamas
362 K Gabon
338 K Afghanistan
334 K Congo, Democratic Republic
315 K Maldives
287 K Suriname
274 K Cape Verde
272 K Mayotte
267 K Guam
243 K Rwanda
233 K Saint Lucia
216 K Laos
211 K Antigua And Barbuda
209 K Benin
195 K Andorra
173 K Saint Vincent And Grenadines
165 K Aruba
164 K Burkina Faso
151 K Grenada
144 K Togo
143 K Tajikistan
130 K Malawi
122 K Djibouti
121 K Congo
107 K Bhutan
106 K Mauritania
105 K Seychelles
103 K Monaco
102 K Cayman Islands
100 K Mali
99 K Saint Kitts And Nevis
98 K Guinea
87 K Faroe Islands
80 K Virgin Islands, U.S.
69 K Gibraltar
51 K Niger
27 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.

507 million keywords. 155 countries

170 M United States
27 M Japan
22 M Germany
22 M United Kingdom
19 M France
18 M Canada
18 M India
17 M Australia
16 M Brazil
14 M Italy
13 M Russian Federation
11 M Spain
11 M Turkey
9.6 M Mexico
9.1 M Indonesia
8.8 M Poland
6.2 M Netherlands
5.4 M Ukraine
5.2 M Vietnam
4.7 M Argentina
4.5 M Thailand
3.6 M Sweden
3.5 M Colombia
3.3 M Taiwan
3 M Philippines
2.7 M Chile
2.4 M Austria
2.3 M Denmark
2.2 M Venezuela
2 M Peru
2 M Egypt
2 M Israel
1.9 M Belgium
1.9 M Greece
1.9 M Czechia
1.7 M Pakistan
1.7 M Malaysia
1.6 M Hungary
1.6 M Singapore
1.6 M Korea
1.6 M Romania
1.6 M Norway
1.6 M Hong Kong
1.4 M Finland
1.3 M South Africa
1.3 M Portugal
1.3 M Algeria
1.3 M Saudi Arabia
1.2 M New Zealand
1.1 M Switzerland
1.1 M Ecuador
1 M Morocco
898 K Bulgaria
788 K Serbia
774 K Slovakia
762 K Ireland
636 K Croatia
609 K Kazakhstan
581 K United Arab Emirates
568 K Belarus
466 K Bangladesh
452 K Sri Lanka
420 K Lithuania
418 K Tunisia
416 K Dominican Republic
402 K Uruguay
394 K Bolivia
373 K Nigeria
371 K Costa Rica
353 K Slovenia
329 K Guatemala
305 K Iraq
281 K Azerbaijan
260 K Kenya
259 K Bosnia & Herzegovina
243 K Latvia
232 K Panama
223 K Estonia
218 K Jordan
210 K Puerto Rico
209 K El Salvador
202 K Paraguay
193 K Moldova
179 K Georgia
166 K Armenia
161 K Honduras
139 K Ghana
128 K Qatar
127 K Jamaica
126 K Lebanon
126 K Palestinian Territory
126 K Trinidad And Tobago
123 K Kuwait
117 K North Macedonia
109 K Nepal
106 K Nicaragua
99 K Mauritius
93 K Oman
92 K Albania
91 K Tanzania
90 K Cyprus
83 K Côte d'Ivoire
71 K Malta
68 K Senegal
68 K Kyrgyzstan
68 K Luxembourg
64 K Cameroon
64 K Cambodia
57 K Bahrain
56 K Libya
55 K Angola
53 K Iceland
50 K Zimbabwe
50 K Guadeloupe
50 K Mozambique
48 K Mongolia
47 K Montenegro
44 K Ethiopia
40 K Madagascar
30 K Zambia
29 K Haiti
29 K Namibia
24 K Brunei Darussalam
22 K Fiji
20 K Afghanistan
20 K Laos
20 K Bahamas
19 K Guyana
18 K Suriname
17 K Congo, Democratic Republic
17 K Maldives
16 K Botswana
16 K Tajikistan
16 K Gabon
14 K Rwanda
13 K Belize
12 K Burkina Faso
11 K Benin
10 K Congo
10 K Cape Verde
9.7 K Mali
8.7 K Togo
7.6 K Saint Vincent And Grenadines
7.5 K Bhutan
6.6 K Andorra
6.6 K Malawi
6.3 K Niger
6.2 K Antigua And Barbuda
5.2 K Djibouti
4.6 K Virgin Islands, U.S.
3.9 K Seychelles
3.6 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

Ahrefs by the numbers

Content index

Keyword index

10.3 billion keywords. 10 search engines. 171 countries.

10.3 billion keywords

Search traffic index

507 million keywords. 155 countries

Backlink index

7 days. 7 dollars. Full access.

Our 7-day trial gives you full access to all tools and features of your chosen plan.

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