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

150,136,571 United States
24,940,202 Japan
20,921,380 Germany
20,114,563 United Kingdom
19,946,166 France
17,367,939 Brazil
17,298,773 Canada
16,337,697 Australia
16,248,310 India
13,633,336 Italy
12,273,123 Russian Federation
10,462,451 Spain
10,118,419 Turkey
9,377,569 Poland
8,973,277 Mexico
8,270,064 Indonesia
5,925,092 Netherlands
5,132,368 Ukraine
4,850,234 Viet Nam
4,736,107 Argentina
3,993,617 Thailand
3,749,839 Colombia
3,491,020 Sweden
2,979,755 Taiwan
2,897,856 Philippines
2,710,742 Chile
2,401,911 Venezuela
2,318,685 Austria
2,184,671 Denmark
2,128,661 Czech Republic
1,980,406 Peru
1,894,993 Israel
1,889,006 Greece
1,808,076 Belgium
1,747,344 Egypt
1,673,207 Hungary
1,579,467 Pakistan
1,555,506 Singapore
1,526,903 Malaysia
1,517,617 Norway
1,456,714 Romania
1,426,506 Hong Kong
1,395,415 Korea
1,340,778 Finland
1,214,587 Portugal
1,181,995 New Zealand
1,181,312 South Africa
1,140,800 Algeria
1,109,156 Ecuador
1,086,091 Saudi Arabia
1,018,254 Switzerland
944,619 Morocco
826,254 Bulgaria
754,503 Serbia
741,934 Slovakia
656,699 Ireland
600,591 Croatia
541,107 Kazakhstan
518,443 Belarus
504,045 United Arab Emirates
411,879 Uruguay
397,316 Bangladesh
394,664 Bolivia
393,672 Dominican Republic
390,837 Tunisia
390,140 Sri Lanka
384,134 Lithuania
348,887 Costa Rica
335,819 Slovenia
318,087 Guatemala
313,387 Nigeria
252,008 Iraq
242,354 Azerbaijan
237,596 Bosnia & Herzegovina
226,118 Latvia
224,764 Panama
218,551 Kenya
214,668 Estonia
205,520 El Salvador
186,366 Paraguay
179,888 Jordan
175,352 Moldova
166,105 Puerto Rico
159,264 Honduras
155,755 Armenia
150,955 Georgia
116,323 Ghana
114,554 Trinidad And Tobago
114,298 Jamaica
106,026 Palestinian Territory
103,063 Qatar
101,471 Macedonia
100,279 Lebanon
95,275 Kuwait
93,906 Mauritius
93,778 Nicaragua
89,381 Nepal
81,758 Albania
76,419 Cyprus
74,562 Oman
70,555 Tanzania
70,523 Cote D'Ivoire
63,052 Malta
56,888 Luxembourg
56,342 Senegal
56,130 Cameroon
56,129 Kyrgyzstan
53,989 Cambodia
48,070 Angola
47,440 Bahrain
47,220 Libya
46,381 Iceland
43,820 Guadeloupe
40,988 Zimbabwe
39,915 Mozambique
39,135 Montenegro
37,712 Madagascar
37,712 Mongolia
34,703 Ethiopia
24,057 Namibia
23,923 Haiti
22,775 Zambia
20,096 Brunei Darussalam
18,092 Fiji
17,491 Afghanistan
16,217 Bahamas
15,993 Laos
15,460 Guyana
15,202 Suriname
14,076 Congo, Democratic Republic
13,838 Maldives
13,698 Botswana
13,036 Tajikistan
13,021 Gabon
11,402 Rwanda
10,861 Belize
10,098 Burkina Faso
9,148 Congo
8,853 Benin
8,815 Cape Verde
8,017 Mali
7,193 Togo
6,612 Saint Vincent And Grenadines
6,336 Bhutan
6,087 Andorra
5,623 Antigua And Barbuda
5,450 Niger
5,170 Malawi
4,431 Djibouti
3,608 Virgin Islands, U.S.
3,359 Seychelles
3,032 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