Ahrefs in numbers

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 biggest third party database of search queries with refined monthly search volume and advanced keyword research metrics.

Browse this page to explore the scale of data that powers Ahrefs marketing tools.

Content index

Our content index is basically a mini search engine. You can search for any word and we'll return all 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 billion pages
Full update

Every month

Keyword indexes

We operate two independent keyword indexes. The larger one (7.3 billion) is used for studying search patterns of internet users (via Keywords Explorer). The smaller one (472 million) is used for researching the search queries that websites rank for in organic search results (via Site Explorer).

Keywords explorer

7.3 billion keywords

3,021,290,034 United States
508,441,662 Brazil
338,000,204 France
313,785,283 United Kingdom
182,373,943 Germany
177,279,743 Spain
172,489,693 Poland
155,338,974 Italy
136,363,779 Russian Federation
134,279,833 Mexico
132,426,465 Canada
116,571,577 Argentina
108,692,519 Japan
108,055,600 India
100,896,463 Colombia
95,952,075 Australia
75,087,406 Ukraine
58,189,903 Indonesia
56,775,899 Chile
54,625,872 Turkey
48,469,605 Venezuela
47,798,064 Czech Republic
46,548,168 Philippines
44,947,249 Netherlands
43,384,279 Taiwan
42,149,631 Belgium
40,660,772 Peru
36,140,817 Hungary
35,883,494 Greece
33,143,932 Ecuador
29,476,365 Romania
29,357,160 Finland
26,869,166 Viet Nam
26,760,994 Pakistan
26,267,052 Portugal
25,754,105 Sweden
25,314,556 Egypt
25,037,006 Malaysia
23,340,775 Algeria
22,465,498 Norway
22,057,920 Morocco
21,309,833 South Africa
21,023,838 Thailand
20,418,150 Austria
20,077,545 Korea
20,052,269 New Zealand
18,956,988 Switzerland
17,815,198 Serbia
16,983,023 Denmark
16,923,279 Slovakia
16,626,928 Bulgaria
15,230,230 Saudi Arabia
13,711,985 Croatia
13,255,965 Hong Kong
13,252,509 Bolivia
13,180,090 Israel
13,141,676 Belarus
12,684,325 Uruguay
12,135,500 Ireland
11,553,530 Singapore
11,270,256 Tunisia
10,942,193 Kazakhstan
10,573,122 Dominican Republic
9,933,150 Costa Rica
8,582,748 Lithuania
8,077,530 Slovenia
7,603,699 Guatemala
7,498,958 Sri Lanka
7,396,294 Bangladesh
6,746,771 United Arab Emirates
6,161,557 Panama
6,127,979 Bosnia & Herzegovina
6,013,244 El Salvador
5,914,046 Latvia
5,772,242 Nigeria
5,654,298 Paraguay
5,482,583 Estonia
5,113,120 Moldova
4,500,690 Honduras
3,649,538 Azerbaijan
3,340,689 Kenya
3,236,132 Armenia
3,188,942 Puerto Rico
2,957,316 Trinidad And Tobago
2,768,970 Jordan
2,738,974 Mauritius
2,585,029 Reunion
2,516,623 Nicaragua
2,511,494 Macedonia
2,456,154 Jamaica
2,431,781 Georgia
2,311,433 Iraq
2,004,307 Palestinian Territory
1,990,054 Ghana
1,642,295 Malta
1,591,652 Albania
1,544,935 Qatar
1,540,366 Cyprus
1,536,057 Lebanon
1,492,860 Nepal
1,447,510 Zimbabwe
1,379,447 Madagascar
1,356,231 Luxembourg
1,328,085 Cote D'Ivoire
1,305,803 Cameroon
1,305,583 Kuwait
1,235,389 Oman
1,093,353 Senegal
1,058,714 Angola
1,036,595 Iceland
1,012,968 Montenegro
1,002,254 Guadeloupe
940,945 Martinique
889,563 Yemen
888,337 Cambodia
868,750 Tanzania
866,858 Bahrain
805,479 Kyrgyzstan
746,996 Mozambique
724,422 New Caledonia
722,215 Libya
612,957 Mongolia
561,961 Ethiopia
497,552 Zambia
477,647 Namibia
474,136 Brunei Darussalam
463,421 French Polynesia
460,958 Haiti
455,952 French Guiana
442,292 Fiji
431,678 Guyana
336,590 Belize
334,612 Botswana
317,468 Bahamas
295,242 Gabon
284,062 Afghanistan
271,190 Congo, Democratic Republic
259,545 Maldives
234,510 Mayotte
231,442 Suriname
226,078 Cape Verde
216,669 Guam
183,838 Saint Lucia
171,223 Antigua And Barbuda
167,763 Rwanda
166,841 Benin
164,150 Andorra
158,847 Laos
143,197 Saint Vincent And Grenadines
135,766 Burkina Faso
134,383 Aruba
122,020 Tajikistan
119,121 Grenada
105,095 Togo
102,882 Djibouti
102,683 Malawi
100,746 Congo
91,076 Mauritania
87,433 Monaco
86,330 Guinea
85,622 Saint Kitts And Nevis
82,976 Bhutan
82,697 Seychelles
82,670 Cayman Islands
78,184 Mali
71,742 Faroe Islands
64,023 Virgin Islands, U.S.
54,894 Gibraltar
42,785 Niger
21,408 Equatorial Guinea

Site explorer

472 million keywords

149,946,368 United States
24,892,865 Japan
20,959,173 Germany
20,026,370 United Kingdom
19,926,435 France
17,411,929 Brazil
17,285,393 Canada
16,326,632 Australia
16,231,608 India
13,620,759 Italy
12,276,690 Russian Federation
10,405,892 Spain
10,127,980 Turkey
9,360,003 Poland
8,941,873 Mexico
8,250,190 Indonesia
5,922,161 Netherlands
5,104,509 Ukraine
4,830,005 Viet Nam
4,732,651 Argentina
3,970,908 Thailand
3,743,678 Colombia
3,491,723 Sweden
2,950,503 Taiwan
2,896,676 Philippines
2,713,091 Chile
2,395,413 Venezuela
2,323,181 Austria
2,180,452 Denmark
2,130,144 Czech Republic
1,972,468 Peru
1,890,592 Israel
1,877,026 Greece
1,808,201 Belgium
1,731,949 Egypt
1,668,483 Hungary
1,565,509 Pakistan
1,551,152 Singapore
1,517,483 Malaysia
1,514,985 Norway
1,446,484 Romania
1,422,588 Hong Kong
1,380,174 Korea
1,338,415 Finland
1,207,215 Portugal
1,178,730 New Zealand
1,171,761 South Africa
1,138,616 Algeria
1,104,067 Ecuador
1,087,526 Saudi Arabia
1,012,646 Switzerland
942,597 Morocco
820,959 Bulgaria
749,159 Serbia
739,485 Slovakia
654,339 Ireland
599,034 Croatia
537,530 Kazakhstan
515,078 Belarus
507,597 United Arab Emirates
411,240 Uruguay
393,323 Bolivia
392,732 Bangladesh
392,630 Dominican Republic
388,057 Tunisia
386,763 Sri Lanka
384,474 Lithuania
348,215 Costa Rica
335,871 Slovenia
316,874 Guatemala
312,420 Nigeria
251,645 Iraq
239,952 Azerbaijan
236,080 Bosnia & Herzegovina
225,620 Latvia
224,078 Panama
215,516 Kenya
213,855 Estonia
205,205 El Salvador
185,914 Paraguay
177,521 Jordan
174,080 Moldova
165,150 Puerto Rico
159,125 Honduras
155,014 Armenia
150,468 Georgia
114,897 Ghana
113,635 Trinidad And Tobago
113,415 Jamaica
105,166 Palestinian Territory
102,400 Qatar
101,460 Macedonia
100,705 Lebanon
94,664 Kuwait
93,866 Nicaragua
93,188 Mauritius
88,211 Nepal
81,703 Albania
75,456 Cyprus
73,726 Oman
70,514 Tanzania
69,677 Cote D'Ivoire
62,742 Malta
56,911 Luxembourg
56,078 Cameroon
55,730 Senegal
55,383 Kyrgyzstan
53,598 Cambodia
47,624 Angola
47,211 Bahrain
46,777 Libya
46,063 Iceland
43,769 Guadeloupe
40,520 Zimbabwe
39,810 Mozambique
39,081 Montenegro
37,411 Mongolia
37,398 Madagascar
34,013 Ethiopia
23,861 Namibia
23,720 Haiti
22,609 Zambia
20,022 Brunei Darussalam
17,837 Fiji
17,569 Afghanistan
16,229 Bahamas
15,799 Laos
15,386 Guyana
15,087 Suriname
14,095 Congo, Democratic Republic
13,695 Maldives
13,587 Botswana
12,952 Gabon
12,874 Tajikistan
11,287 Rwanda
10,794 Belize
10,043 Burkina Faso
9,099 Congo
8,833 Benin
8,805 Cape Verde
7,908 Mali
7,095 Togo
6,574 Saint Vincent And Grenadines
6,301 Bhutan
6,057 Andorra
5,604 Antigua And Barbuda
5,427 Niger
5,095 Malawi
4,411 Djibouti
3,584 Virgin Islands, U.S.
3,343 Seychelles
3,013 Gibraltar
5 New Caledonia
2 Mauritania
1 Monaco

Backlink index

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

Domains (POST-VETTING)

Pages in index

Internal backlinks

External backlinks

Server fleet

Above anything, 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.

2.5K Servers

38,000 CPU cores
256TB RAM
25PB HDD
2.5PB SSD

Ahrefs in numbers

Content index

Keyword indexes

7.3 billion keywords

472 million keywords

Backlink index

Server fleet

7 days. 7 dollars. Full access.

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

Lite

Standard