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

100K CPU cores
600TB RAM
30PB HDD
50PB 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

30 million new pages
Every 24 hours we update metrics for

350 million pages
Total content index size

5.02 billion pages

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.

7.8 billion keywords. 10 search engines. 221 countries.

Google

6.3 B
YouTube

832 M
Yahoo

171 M
Amazon

159 M
Bing

117 M
Yandex

96 M
Naver

18 M
Seznam

8.4 M
Baidu

3.5 M
Daum

1.8 M

7.8 billion keywords

2.8 B United States
405 M Brazil
313 M United Kingdom
272 M France
159 M Germany
150 M Spain
135 M Poland
133 M Italy
126 M Canada
110 M Mexico
108 M Japan
99 M Argentina
99 M Russian Federation
98 M Australia
89 M India
75 M Colombia
61 M Ukraine
46 M Turkey
45 M Chile
45 M Indonesia
44 M Netherlands
43 M Czechia
39 M Philippines
37 M Taiwan
35 M Belgium
33 M Peru
31 M Venezuela
30 M Hungary
30 M Greece
25 M Ecuador
24 M Finland
24 M Thailand
23 M Sweden
23 M Romania
23 M Portugal
22 M Norway
20 M Malaysia
20 M South Africa
20 M Egypt
20 M Vietnam
19 M New Zealand
19 M Pakistan
18 M Korea
17 M Austria
16 M Switzerland
16 M Denmark
15 M Morocco
15 M Algeria
14 M Serbia
14 M Slovakia
14 M Israel
13 M Hong Kong
13 M Bulgaria
11 M Saudi Arabia
11 M Ireland
11 M Croatia
11 M Singapore
11 M Bolivia
9.9 M Uruguay
9.6 M Belarus
7.9 M Costa Rica
7.9 M Dominican Republic
7.7 M Kazakhstan
7.7 M Tunisia
6.9 M Lithuania
6.7 M Guatemala
6.5 M Slovenia
6.3 M Bangladesh
6 M Sri Lanka
5.8 M United Arab Emirates
5.3 M Nigeria
5.2 M Panama
4.8 M Estonia
4.7 M El Salvador
4.5 M Latvia
4.5 M Paraguay
4.5 M Bosnia & Herzegovina
3.8 M Honduras
3.5 M Kenya
3.3 M Moldova
2.8 M Trinidad And Tobago
2.6 M Puerto Rico
2.4 M Azerbaijan
2.4 M Jamaica
2.3 M Mauritius
2.3 M Jordan
2 M Reunion
2 M North Macedonia
2 M Armenia
1.9 M Georgia
1.9 M Nicaragua
1.8 M Ghana
1.6 M Nepal
1.6 M Iraq
1.5 M Malta
1.4 M Lebanon
1.4 M Cyprus
1.3 M Albania
1.3 M Qatar
1.2 M Palestinian Territory
1.2 M Luxembourg
1.2 M Kuwait
1.1 M Madagascar
1.1 M Côte d'Ivoire
1.1 M Cameroon
1 M Oman
922 K Senegal
901 K Angola
891 K Iceland
850 K Zimbabwe
808 K Cambodia
781 K Guadeloupe
759 K Martinique
756 K Montenegro
743 K Tanzania
719 K Bahrain
680 K Yemen
642 K Kyrgyzstan
599 K Libya
596 K Mongolia
567 K Ethiopia
559 K Mozambique
535 K New Caledonia
462 K Zambia
453 K Namibia
452 K Fiji
410 K Haiti
405 K Brunei Darussalam
361 K French Polynesia
357 K Guyana
336 K French Guiana
326 K Belize
322 K Botswana
295 K Bahamas
252 K Gabon
226 K Congo, Democratic Republic
212 K Suriname
209 K Maldives
208 K Afghanistan
199 K Guam
196 K Rwanda
186 K Cape Verde
177 K Mayotte
176 K Saint Lucia
168 K Laos
155 K Antigua And Barbuda
146 K Benin
139 K Iran, Islamic Republic Of
129 K Andorra
119 K Aruba
119 K Saint Vincent And Grenadines
111 K Grenada
110 K Burkina Faso
108 K Togo
93 K Malawi
86 K Tajikistan
79 K Congo
77 K Bhutan
75 K Seychelles
73 K Cayman Islands
72 K Djibouti
71 K Mali
69 K Monaco
64 K Saint Kitts And Nevis
63 K Mauritania
59 K Faroe Islands
53 K Virgin Islands, U.S.
50 K Gibraltar
50 K Guinea
34 K Niger
19 K Equatorial Guinea
2.5 K Syrian Arab Republic
2.5 K Uganda
2.1 K Uzbekistan
1.6 K Sudan
1.3 K Myanmar
893 Cuba
635 China
486 Macao
389 Somalia
372 Turkmenistan
295 Papua New Guinea
248 Liberia
190 Jersey
157 Isle Of Man
148 Swaziland
128 Sierra Leone
125 Lesotho
79 Guernsey
76 Gambia
67 Chad
65 Liechtenstein
58 Timor-Leste
34 Guinea-Bissau
29 Northern Mariana Islands
23 Samoa
21 Greenland
19 Solomon Islands
17 Turks And Caicos Islands
17 Virgin Islands, British
17 Vanuatu
15 Dominica
14 Central African Republic
14 San Marino
12 Saint Martin
8 Tonga
7 Comoros
7 Palau
6 Sao Tome And Principe
4 Marshall Islands
3 Cook Islands
3 Micronesia, Federated States Of
3 Saint Helena
1 Eritrea
1 Falkland Islands (Malvinas)
1 Montserrat
1 Saint Pierre And Miquelon

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.

472 million keywords. 155 countries

157 M United States
26 M Japan
21 M United Kingdom
19 M Germany
18 M France
17 M India
16 M Australia
15 M Canada
13 M Italy
13 M Russian Federation
12 M Brazil
11 M Turkey
11 M Spain
9.1 M Mexico
8.8 M Indonesia
8.7 M Poland
6.1 M Netherlands
5.4 M Ukraine
5.1 M Vietnam
4.5 M Argentina
4.3 M Thailand
3.6 M Sweden
3.3 M Colombia
2.9 M Taiwan
2.5 M Philippines
2.3 M Austria
2.2 M Denmark
2.1 M Chile
2 M Israel
1.9 M Egypt
1.9 M Belgium
1.8 M Czechia
1.8 M Peru
1.8 M Greece
1.7 M Malaysia
1.6 M Singapore
1.6 M Hungary
1.6 M Pakistan
1.6 M Norway
1.5 M Romania
1.5 M Hong Kong
1.5 M Korea
1.5 M Venezuela
1.4 M Algeria
1.3 M Finland
1.3 M South Africa
1.3 M Portugal
1.2 M Saudi Arabia
1.2 M New Zealand
1.1 M Switzerland
1 M Ecuador
1 M Morocco
880 K Bulgaria
765 K Serbia
747 K Ireland
747 K Slovakia
620 K Croatia
587 K Kazakhstan
556 K United Arab Emirates
554 K Belarus
458 K Bangladesh
443 K Sri Lanka
412 K Lithuania
406 K Dominican Republic
404 K Tunisia
383 K Bolivia
380 K Uruguay
370 K Nigeria
362 K Costa Rica
345 K Slovenia
324 K Guatemala
289 K Azerbaijan
286 K Iraq
256 K Kenya
254 K Bosnia & Herzegovina
238 K Latvia
226 K Panama
220 K Estonia
218 K Puerto Rico
215 K Jordan
206 K El Salvador
192 K Paraguay
190 K Moldova
176 K Georgia
159 K Honduras
156 K Armenia
138 K Ghana
128 K Lebanon
127 K Qatar
126 K Kuwait
125 K Jamaica
124 K Trinidad And Tobago
124 K Palestinian Territory
115 K North Macedonia
108 K Nepal
103 K Nicaragua
97 K Mauritius
92 K Tanzania
91 K Cyprus
90 K Oman
90 K Albania
84 K Côte d'Ivoire
70 K Malta
67 K Senegal
67 K Luxembourg
66 K Cameroon
66 K Kyrgyzstan
62 K Cambodia
58 K Bahrain
55 K Libya
54 K Angola
52 K Iceland
51 K Mozambique
49 K Zimbabwe
49 K Guadeloupe
47 K Montenegro
47 K Mongolia
43 K Ethiopia
39 K Madagascar
30 K Zambia
29 K Haiti
29 K Namibia
24 K Brunei Darussalam
22 K Fiji
21 K Bahamas
20 K Afghanistan
19 K Laos
19 K Guyana
18 K Suriname
18 K Congo, Democratic Republic
17 K Botswana
17 K Maldives
17 K Gabon
16 K Tajikistan
14 K Rwanda
13 K Belize
13 K Burkina Faso
11 K Congo
11 K Benin
10 K Cape Verde
9.3 K Mali
8.6 K Togo
7.6 K Bhutan
7.5 K Saint Vincent And Grenadines
6.7 K Malawi
6.5 K Andorra
6.2 K Niger
6.1 K Antigua And Barbuda
5.5 K Djibouti
4.6 K Virgin Islands, U.S.
3.9 K Seychelles
3.6 K Gibraltar
38 Uzbekistan

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