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
540 M Brazil
357 M France
327 M United Kingdom
195 M Germany
189 M Spain
183 M Poland
167 M Italy
144 M Russian Federation
143 M Mexico
139 M Canada
125 M Argentina
118 M Japan
116 M India
106 M Colombia
100 M Australia
81 M Ukraine
62 M Indonesia
60 M Chile
58 M Turkey
52 M Czech Republic
50 M Venezuela
50 M Philippines
49 M Netherlands
47 M Taiwan
45 M Belgium
43 M Peru
39 M Hungary
38 M Greece
35 M Ecuador
32 M Romania
31 M Finland
29 M Pakistan
28 M Portugal
28 M Vietnam
28 M Sweden
27 M Egypt
27 M Malaysia
25 M Algeria
23 M Thailand
23 M Morocco
23 M Norway
23 M South Africa
22 M Austria
22 M Korea
21 M New Zealand
20 M Switzerland
19 M Serbia
18 M Denmark
18 M Slovakia
18 M Bulgaria
16 M Saudi Arabia
15 M Croatia
15 M Israel
14 M Hong Kong
14 M Bolivia
14 M Belarus
13 M Uruguay
13 M Ireland
13 M Singapore
12 M Tunisia
12 M Kazakhstan
11 M Dominican Republic
11 M Costa Rica
9.2 M Lithuania
8.6 M Slovenia
8.2 M Guatemala
8.1 M Bangladesh
8.1 M Sri Lanka
7.3 M United Arab Emirates
6.6 M Panama
6.5 M Bosnia & Herzegovina
6.4 M El Salvador
6.3 M Latvia
6.3 M Nigeria
6 M Paraguay
5.9 M Estonia
5.4 M Moldova
4.8 M Honduras
3.9 M Azerbaijan
3.7 M Kenya
3.5 M Puerto Rico
3.4 M Armenia
3.2 M Trinidad And Tobago
3 M Jordan
3 M Mauritius
2.8 M Reunion
2.7 M Macedonia
2.7 M Jamaica
2.7 M Nicaragua
2.6 M Georgia
2.5 M Iraq
2.2 M Ghana
2.1 M Palestinian Territory
1.8 M Malta
1.7 M Albania
1.7 M Lebanon
1.7 M Nepal
1.7 M Qatar
1.7 M Cyprus
1.5 M Zimbabwe
1.5 M Madagascar
1.5 M Luxembourg
1.4 M Côte d'Ivoire
1.4 M Kuwait
1.4 M Cameroon
1.3 M Oman
1.2 M Senegal
1.1 M Angola
1.1 M Iceland
1.1 M Montenegro
1.1 M Guadeloupe
1 M Martinique
974 K Cambodia
951 K Yemen
945 K Tanzania
938 K Bahrain
879 K Kyrgyzstan
793 K Mozambique
786 K Libya
768 K New Caledonia
688 K Mongolia
643 K Ethiopia
554 K Zambia
526 K Namibia
516 K Brunei Darussalam
500 K Haiti
496 K French Polynesia
492 K Fiji
484 K French Guiana
466 K Guyana
373 K Belize
368 K Botswana
350 K Bahamas
322 K Gabon
302 K Afghanistan
294 K Congo, Democratic Republic
280 K Maldives
254 K Suriname
251 K Mayotte
245 K Cape Verde
237 K Guam
203 K Saint Lucia
193 K Rwanda
187 K Antigua And Barbuda
182 K Benin
180 K Laos
177 K Andorra
155 K Saint Vincent And Grenadines
148 K Burkina Faso
147 K Aruba
132 K Grenada
132 K Tajikistan
118 K Togo
114 K Malawi
111 K Djibouti
108 K Congo
98 K Mauritania
93 K Monaco
91 K Seychelles
91 K Saint Kitts And Nevis
91 K Guinea
91 K Bhutan
90 K Cayman Islands
86 K Mali
78 K Faroe Islands
70 K Virgin Islands, U.S.
60 K Gibraltar
46 K Niger
23 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.

481 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
17 M India
16 M Australia
14 M Italy
12 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
4.8 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 Saudi Arabia
1.1 M Ecuador
1 M Switzerland
970 K Morocco
850 K Bulgaria
778 K Serbia
760 K Slovakia
687 K Ireland
621 K Croatia
563 K Kazakhstan
538 K Belarus
534 K United Arab Emirates
423 K Bangladesh
416 K Uruguay
410 K Sri Lanka
406 K Dominican Republic
405 K Tunisia
405 K Bolivia
400 K Lithuania
359 K Costa Rica
345 K Slovenia
329 K Nigeria
326 K Guatemala
267 K Iraq
253 K Azerbaijan
246 K Bosnia & Herzegovina
233 K Latvia
232 K Kenya
230 K Panama
222 K Estonia
210 K El Salvador
191 K Paraguay
189 K Jordan
182 K Moldova
173 K Puerto Rico
163 K Honduras
161 K Georgia
160 K Armenia
122 K Ghana
120 K Jamaica
119 K Trinidad And Tobago
112 K Palestinian Territory
108 K Qatar
106 K Macedonia
106 K Lebanon
100 K Kuwait
97 K Mauritius
96 K Nicaragua
96 K Nepal
86 K Albania
80 K Cyprus
78 K Oman
74 K Tanzania
74 K Côte d'Ivoire
66 K Malta
59 K Kyrgyzstan
59 K Senegal
59 K Luxembourg
58 K Cameroon
57 K Cambodia
50 K Angola
50 K Bahrain
50 K Libya
48 K Iceland
45 K Guadeloupe
44 K Zimbabwe
41 K Mozambique
41 K Mongolia
41 K Montenegro
39 K Madagascar
38 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
15 K Maldives
14 K Botswana
14 K Tajikistan
14 K Gabon
12 K Rwanda
11 K Belize
10 K Burkina Faso
9.3 K Congo
9.3 K Benin
9.2 K Cape Verde
8.4 K Mali
7.6 K Togo
6.8 K Saint Vincent And Grenadines
6.6 K Bhutan
6.3 K Andorra
5.9 K Antigua And Barbuda
5.6 K Malawi
5.6 K Niger
4.6 K Djibouti
3.7 K Virgin Islands, U.S.
3.5 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