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.

Explore the scale of data that powers Ahrefs marketing tools:

Content index

Our content index powers Content Explorer. Search for any word or phrase and we return useful SEO and social metrics for all relevant pages.

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 indexes

We operate two independent keyword indexes. The larger one (7.5 billion) powers Keywords Explorer, which you can use to study internet users' search patterns. The smaller one (474 million) powers Site Explorer, which you can use to research the queries that websites rank for in organic search results.

Keywords explorer

7.5 billion keywords

3,159,164,014 United States
520,440,594 Brazil
345,977,838 France
319,002,524 United Kingdom
187,735,578 Germany
181,998,547 Spain
177,111,713 Poland
160,309,345 Italy
139,426,471 Russian Federation
137,709,641 Mexico
134,988,232 Canada
119,644,753 Argentina
112,954,132 Japan
111,295,373 India
102,425,870 Colombia
97,655,475 Australia
77,458,008 Ukraine
59,683,245 Indonesia
58,073,578 Chile
56,108,489 Turkey
49,405,057 Czech Republic
49,365,267 Venezuela
47,937,197 Philippines
46,767,644 Netherlands
44,711,890 Taiwan
43,425,406 Belgium
41,575,172 Peru
37,178,276 Hungary
36,937,655 Greece
33,965,599 Ecuador
30,306,991 Romania
30,154,899 Finland
27,523,751 Pakistan
27,367,395 Viet Nam
27,078,903 Portugal
26,570,513 Sweden
26,035,788 Egypt
25,776,279 Malaysia
23,844,290 Algeria
22,793,407 Norway
22,561,203 Morocco
22,006,326 South Africa
21,956,337 Thailand
20,990,027 Austria
20,748,617 Korea
20,391,194 New Zealand
19,571,793 Switzerland
18,337,211 Serbia
17,583,913 Denmark
17,428,287 Slovakia
17,088,849 Bulgaria
15,623,453 Saudi Arabia
14,101,621 Croatia
13,789,692 Israel
13,711,890 Hong Kong
13,547,661 Bolivia
13,503,309 Belarus
12,980,568 Uruguay
12,587,288 Ireland
11,971,898 Singapore
11,534,160 Tunisia
11,242,601 Kazakhstan
10,813,125 Dominican Republic
10,155,670 Costa Rica
8,833,359 Lithuania
8,305,937 Slovenia
7,776,798 Guatemala
7,723,509 Sri Lanka
7,663,093 Bangladesh
6,963,717 United Arab Emirates
6,289,604 Panama
6,285,154 Bosnia & Herzegovina
6,128,301 El Salvador
6,076,767 Latvia
5,971,260 Nigeria
5,786,363 Paraguay
5,666,254 Estonia
5,235,887 Moldova
4,595,984 Honduras
3,731,664 Azerbaijan
3,487,153 Kenya
3,295,899 Armenia
3,282,364 Puerto Rico
3,066,075 Trinidad And Tobago
2,858,494 Jordan
2,823,049 Mauritius
2,653,483 Reunion
2,588,656 Macedonia
2,566,538 Nicaragua
2,546,009 Jamaica
2,505,587 Georgia
2,368,638 Iraq
2,057,414 Ghana
2,048,132 Palestinian Territory
1,697,988 Malta
1,642,031 Albania
1,595,908 Qatar
1,594,452 Cyprus
1,594,072 Lebanon
1,561,005 Nepal
1,476,810 Zimbabwe
1,423,232 Madagascar
1,402,931 Luxembourg
1,369,620 Cote D'Ivoire
1,350,976 Kuwait
1,345,648 Cameroon
1,276,650 Oman
1,129,467 Senegal
1,091,171 Angola
1,068,562 Iceland
1,039,718 Montenegro
1,030,578 Guadeloupe
969,017 Martinique
922,000 Cambodia
914,138 Yemen
898,990 Tanzania
893,688 Bahrain
832,642 Kyrgyzstan
762,985 Mozambique
748,065 Libya
740,777 New Caledonia
637,818 Mongolia
593,360 Ethiopia
519,272 Zambia
496,852 Namibia
489,384 Brunei Darussalam
476,750 Haiti
475,820 French Polynesia
467,381 French Guiana
457,735 Fiji
443,995 Guyana
349,863 Belize
345,576 Botswana
329,552 Bahamas
305,429 Gabon
290,165 Afghanistan
278,706 Congo, Democratic Republic
266,730 Maldives
240,738 Mayotte
240,348 Suriname
233,499 Cape Verde
224,687 Guam
191,106 Saint Lucia
177,558 Antigua And Barbuda
176,222 Rwanda
172,419 Benin
169,177 Andorra
166,441 Laos
147,601 Saint Vincent And Grenadines
141,077 Burkina Faso
139,121 Aruba
125,820 Tajikistan
123,561 Grenada
109,649 Togo
106,913 Malawi
105,744 Djibouti
103,376 Congo
93,473 Mauritania
89,764 Monaco
88,054 Guinea
87,734 Saint Kitts And Nevis
85,868 Seychelles
85,569 Cayman Islands
85,220 Bhutan
81,009 Mali
73,899 Faroe Islands
66,007 Virgin Islands, U.S.
56,969 Gibraltar
43,970 Niger
22,035 Equatorial Guinea

Site explorer

474 million keywords

149,675,116 United States
25,194,749 Japan
21,030,942 Germany
20,250,590 United Kingdom
20,024,845 France
17,286,061 Brazil
17,216,940 Canada
16,338,654 Australia
16,319,769 India
13,734,381 Italy
12,352,195 Russian Federation
10,555,647 Spain
10,199,080 Turkey
9,442,708 Poland
8,995,306 Mexico
8,319,679 Indonesia
5,956,352 Netherlands
5,177,800 Ukraine
4,896,329 Viet Nam
4,767,897 Argentina
4,055,674 Thailand
3,759,074 Colombia
3,505,853 Sweden
2,996,349 Taiwan
2,918,992 Philippines
2,722,635 Chile
2,408,909 Venezuela
2,326,329 Austria
2,192,626 Denmark
2,127,506 Czech Republic
1,990,619 Peru
1,911,590 Greece
1,899,983 Israel
1,829,398 Belgium
1,777,564 Egypt
1,687,617 Hungary
1,600,654 Pakistan
1,562,861 Singapore
1,544,759 Malaysia
1,524,046 Norway
1,475,856 Romania
1,441,491 Hong Kong
1,411,842 Korea
1,356,105 Finland
1,230,307 Portugal
1,193,497 South Africa
1,188,800 New Zealand
1,155,685 Algeria
1,115,581 Ecuador
1,104,057 Saudi Arabia
1,025,343 Switzerland
957,358 Morocco
837,227 Bulgaria
765,028 Serbia
750,208 Slovakia
668,007 Ireland
608,301 Croatia
547,393 Kazakhstan
524,047 Belarus
515,621 United Arab Emirates
413,338 Uruguay
405,156 Bangladesh
398,576 Bolivia
397,555 Dominican Republic
396,505 Sri Lanka
395,464 Tunisia
390,415 Lithuania
352,417 Costa Rica
339,030 Slovenia
320,075 Guatemala
319,453 Nigeria
258,441 Iraq
243,827 Azerbaijan
240,713 Bosnia & Herzegovina
227,967 Latvia
226,285 Panama
222,763 Kenya
217,605 Estonia
206,950 El Salvador
187,966 Paraguay
182,224 Jordan
177,590 Moldova
167,700 Puerto Rico
160,519 Honduras
156,904 Armenia
153,440 Georgia
118,055 Ghana
116,250 Trinidad And Tobago
116,212 Jamaica
108,049 Palestinian Territory
104,633 Qatar
103,233 Macedonia
102,539 Lebanon
96,998 Kuwait
95,124 Mauritius
94,616 Nicaragua
91,099 Nepal
83,137 Albania
77,741 Cyprus
75,346 Oman
71,955 Tanzania
71,515 Cote D'Ivoire
63,926 Malta
57,708 Luxembourg
57,177 Senegal
57,034 Cameroon
56,781 Kyrgyzstan
54,612 Cambodia
48,806 Angola
48,221 Bahrain
47,738 Libya
46,894 Iceland
44,308 Guadeloupe
41,910 Zimbabwe
40,278 Mozambique
39,758 Montenegro
38,817 Mongolia
38,097 Madagascar
35,648 Ethiopia
24,523 Namibia
24,362 Haiti
23,285 Zambia
20,409 Brunei Darussalam
18,473 Fiji
17,540 Afghanistan
16,590 Bahamas
16,339 Laos
15,737 Guyana
15,444 Suriname
14,346 Congo, Democratic Republic
14,120 Maldives
13,912 Botswana
13,267 Tajikistan
13,265 Gabon
11,675 Rwanda
11,062 Belize
10,247 Burkina Faso
9,260 Congo
9,008 Benin
8,968 Cape Verde
8,137 Mali
7,311 Togo
6,678 Saint Vincent And Grenadines
6,436 Bhutan
6,148 Andorra
5,715 Antigua And Barbuda
5,492 Niger
5,312 Malawi
4,492 Djibouti
3,646 Virgin Islands, U.S.
3,383 Seychelles
3,065 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

Server fleet

We're proud of our backend infrastructure. No existing solution could keep up with the volume of data that we handle, so we had to custom-build the larger part of our software infrastructure.

2,000 Servers

65,000 CPU cores
360TB RAM
48PB HDD
7PB SSD

Ahrefs by the numbers

Content index

Keyword indexes

7.5 billion keywords

474 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