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.
1953 Servers
- 110K CPU cores
- 0.6PB RAM
- 33PB HDD
- 31PB 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.
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Every 24 hours we discover30 million new pages
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Every 24 hours we update metrics for420 million pages
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Total content index size10 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.
19.2 billion keywords. 10 search engines. 242 countries.
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Google17 B
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YouTube1.3 B
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Yahoo261 M
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Amazon232 M
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Yandex170 M
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Bing157 M
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Naver33 M
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Seznam14 M
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Baidu5.7 M
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Daum3.3 M
19.2 billion keywords
- 4.5 B United States
- 827 M Brazil
- 616 M United Kingdom
- 552 M France
- 473 M India
- 445 M Germany
- 384 M Canada
- 354 M Spain
- 341 M Russian Federation
- 322 M Mexico
- 319 M Italy
- 315 M Poland
- 290 M Japan
- 282 M Indonesia
- 270 M Australia
- 268 M Argentina
- 235 M Philippines
- 219 M Colombia
- 215 M Turkey
- 196 M Vietnam
- 193 M Ukraine
- 175 M Netherlands
- 166 M Malaysia
- 162 M Thailand
- 143 M Taiwan
- 132 M Korea
- 132 M Chile
- 126 M Belgium
- 124 M Peru
- 123 M Pakistan
- 113 M South Africa
- 112 M Sweden
- 106 M Czechia
- 104 M Egypt
- 102 M Switzerland
- 97 M Singapore
- 96 M Venezuela
- 94 M Romania
- 93 M Ecuador
- 90 M United Arab Emirates
- 89 M Greece
- 88 M Saudi Arabia
- 87 M Austria
- 82 M Hungary
- 82 M Portugal
- 81 M Morocco
- 79 M Bangladesh
- 77 M Ireland
- 76 M Algeria
- 73 M Finland
- 73 M New Zealand
- 69 M Hong Kong
- 68 M Norway
- 66 M Denmark
- 59 M Israel
- 57 M Serbia
- 53 M Nigeria
- 52 M Kazakhstan
- 51 M Bulgaria
- 48 M Dominican Republic
- 47 M Belarus
- 46 M Slovakia
- 44 M Bolivia
- 41 M Sri Lanka
- 39 M Croatia
- 39 M Iraq
- 38 M Tunisia
- 38 M Guatemala
- 37 M Costa Rica
- 37 M Kenya
- 35 M Nepal
- 34 M Lithuania
- 33 M Uruguay
- 29 M Panama
- 29 M Jordan
- 27 M Palestine, State of
- 26 M Paraguay
- 25 M Slovenia
- 25 M Latvia
- 25 M Georgia
- 25 M Qatar
- 24 M Honduras
- 24 M El Salvador
- 24 M Kuwait
- 24 M Puerto Rico
- 24 M Lebanon
- 23 M Azerbaijan
- 23 M Cambodia
- 23 M Ghana
- 22 M China
- 21 M Bosnia & Herzegovina
- 20 M Moldova
- 20 M Estonia
- 18 M Uzbekistan
- 18 M Trinidad And Tobago
- 18 M Oman
- 18 M Jamaica
- 16 M Cyprus
- 15 M Myanmar
- 15 M Armenia
- 15 M Bahrain
- 14 M Nicaragua
- 14 M Albania
- 14 M Luxembourg
- 13 M Libya
- 13 M North Macedonia
- 13 M Ethiopia
- 13 M Syrian Arab Republic
- 12 M Kyrgyzstan
- 12 M Mauritius
- 12 M Yemen
- 12 M Uganda
- 11 M Tanzania
- 11 M Sudan
- 10 M Malta
- 10 M Reunion
- 9.6 M Cameroon
- 9.5 M Cuba
- 9.5 M Mongolia
- 9.2 M Côte d'Ivoire
- 8.9 M Zimbabwe
- 8.7 M Zambia
- 8.5 M Senegal
- 7.2 M Afghanistan
- 7 M Laos
- 7 M Iceland
- 6.8 M Brunei Darussalam
- 6.6 M Angola
- 6.6 M Turkmenistan
- 6.2 M Montenegro
- 5.9 M Bahamas
- 5.9 M Madagascar
- 5.9 M Congo, Democratic Republic
- 5.6 M Maldives
- 5.5 M Mozambique
- 5.5 M Namibia
- 5.1 M Haiti
- 4.8 M Guadeloupe
- 4.7 M Botswana
- 4.6 M Martinique
- 4.4 M Guyana
- 4.2 M Macao
- 4 M Tajikistan
- 3.9 M Belize
- 3.8 M Somalia
- 3.5 M Fiji
- 3.5 M Rwanda
- 3.5 M Guam
- 3.5 M Benin
- 3.3 M Suriname
- 3 M Mali
- 2.9 M Gabon
- 2.9 M Malawi
- 2.9 M Togo
- 2.8 M Papua New Guinea
- 2.7 M Burkina Faso
- 2.6 M Bhutan
- 2.4 M New Caledonia
- 2.3 M Jersey
- 2.2 M French Polynesia
- 2.1 M French Guiana
- 2.1 M Swaziland
- 2.1 M Isle Of Man
- 2 M Saint Lucia
- 2 M Congo
- 2 M Guinea
- 1.9 M Aruba
- 1.9 M Lesotho
- 1.8 M Sierra Leone
- 1.7 M Andorra
- 1.7 M Cayman Islands
- 1.7 M Antigua And Barbuda
- 1.7 M Niger
- 1.7 M Seychelles
- 1.6 M Cape Verde
- 1.5 M Bermuda
- 1.5 M Liberia
- 1.5 M Grenada
- 1.5 M Virgin Islands, U.S.
- 1.5 M Guernsey
- 1.3 M Gambia
- 1.2 M Saint Vincent And Grenadines
- 1.1 M Faroe Islands
- 1 M Virgin Islands, British
- 1 M Mayotte
- 1 M Liechtenstein
- 1 M Timor-Leste
- 980 K Greenland
- 977 K Gibraltar
- 964 K Saint Kitts And Nevis
- 953 K Djibouti
- 940 K Chad
- 898 K Monaco
- 837 K Burundi
- 823 K Dominica
- 776 K Aland Islands
- 726 K Turks And Caicos Islands
- 646 K San Marino
- 581 K Northern Mariana Islands
- 541 K Equatorial Guinea
- 419 K Samoa
- 408 K American Samoa
- 401 K Solomon Islands
- 384 K Western Sahara
- 368 K Vanuatu
- 358 K Central African Republic
- 356 K Sao Tome And Principe
- 345 K Guinea-Bissau
- 332 K Comoros
- 313 K Saint Martin
- 292 K Anguilla
- 257 K Tonga
- 202 K Micronesia, Federated States Of
- 199 K Palau
- 184 K Saint Barthelemy
- 160 K Cook Islands
- 148 K Kiribati
- 138 K Marshall Islands
- 133 K Eritrea
- 94 K Svalbard And Jan Mayen
- 90 K Nauru
- 77 K Saint Pierre And Miquelon
- 61 K Montserrat
- 54 K Falkland Islands (Malvinas)
- 36 K Saint Helena
- 26 K Wallis And Futuna
- 22 K Antarctica
- 16 K British Indian Ocean Territory
- 16 K Norfolk Island
- 15 K Christmas Island
- 14 K Tuvalu
- 9 K Niue
- 2.2 K Tokelau
- 689 United States Outlying Islands
- 9 Cocos (Keeling) Islands
- 6 South Georgia And Sandwich Isl.
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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.
509 million keywords. 189 countries
- 148 M United States
- 31 M India
- 28 M Japan
- 22 M United Kingdom
- 19 M Germany
- 15 M France
- 14 M Indonesia
- 13 M Canada
- 13 M Australia
- 12 M Turkey
- 12 M Italy
- 12 M Brazil
- 11 M Mexico
- 10 M Spain
- 9.2 M Poland
- 9.1 M Russian Federation
- 6.9 M Thailand
- 6.8 M Vietnam
- 6.6 M Netherlands
- 5.9 M Philippines
- 5.4 M Ukraine
- 5 M Argentina
- 4.5 M Colombia
- 3.9 M Sweden
- 3.5 M Taiwan
- 3.3 M Malaysia
- 3 M South Africa
- 2.9 M Chile
- 2.8 M Saudi Arabia
- 2.6 M Peru
- 2.6 M Egypt
- 2.5 M Pakistan
- 2.5 M Belgium
- 2.2 M Denmark
- 2.2 M Austria
- 2.1 M Greece
- 2.1 M Romania
- 2 M Czechia
- 1.9 M Singapore
- 1.9 M Switzerland
- 1.9 M Israel
- 1.9 M Korea
- 1.8 M Hungary
- 1.6 M Hong Kong
- 1.6 M Finland
- 1.6 M Nigeria
- 1.6 M Portugal
- 1.6 M Norway
- 1.5 M Ireland
- 1.4 M United Arab Emirates
- 1.4 M New Zealand
- 1.3 M Bangladesh
- 1.2 M Ecuador
- 1.1 M Venezuela
- 1.1 M Algeria
- 972 K Morocco
- 970 K Kazakhstan
- 941 K Slovakia
- 901 K Bulgaria
- 842 K Serbia
- 702 K Croatia
- 690 K Belarus
- 683 K Kenya
- 652 K Sri Lanka
- 633 K Iraq
- 585 K Guatemala
- 562 K Bolivia
- 529 K Dominican Republic
- 485 K Lithuania
- 482 K Nepal
- 474 K Costa Rica
- 420 K Uruguay
- 413 K Jordan
- 409 K Ghana
- 407 K Tunisia
- 348 K Panama
- 334 K Azerbaijan
- 325 K Paraguay
- 323 K Kuwait
- 317 K Slovenia
- 303 K Uzbekistan
- 301 K Puerto Rico
- 275 K Honduras
- 273 K El Salvador
- 249 K Bosnia & Herzegovina
- 246 K Qatar
- 246 K Lebanon
- 229 K Estonia
- 228 K Latvia
- 220 K Oman
- 207 K Georgia
- 204 K Tanzania
- 186 K Uganda
- 181 K Moldova
- 174 K Kyrgyzstan
- 168 K China
- 166 K Nicaragua
- 166 K Cyprus
- 158 K Myanmar
- 157 K Jamaica
- 153 K Côte d'Ivoire
- 139 K Zambia
- 138 K Libya
- 137 K Cambodia
- 137 K Armenia
- 134 K Cameroon
- 131 K Ethiopia
- 129 K Bahrain
- 128 K Senegal
- 125 K Palestine, State of
- 123 K Trinidad And Tobago
- 121 K Congo, Democratic Republic
- 119 K North Macedonia
- 112 K Albania
- 103 K Luxembourg
- 97 K Zimbabwe
- 95 K Mauritius
- 91 K Malta
- 89 K Angola
- 79 K Mozambique
- 72 K Mongolia
- 66 K Montenegro
- 63 K Laos
- 61 K Turkmenistan
- 60 K Haiti
- 59 K Iceland
- 57 K Afghanistan
- 52 K Namibia
- 49 K Cuba
- 46 K Guadeloupe
- 45 K Burkina Faso
- 45 K Tajikistan
- 42 K Mali
- 42 K Brunei Darussalam
- 40 K Benin
- 39 K Somalia
- 38 K Madagascar
- 38 K Botswana
- 37 K Maldives
- 33 K Rwanda
- 29 K Bahamas
- 29 K Guyana
- 28 K Fiji
- 27 K Gabon
- 25 K Togo
- 23 K Suriname
- 22 K Papua New Guinea
- 20 K Bhutan
- 20 K Malawi
- 18 K Belize
- 17 K Gibraltar
- 17 K Congo
- 16 K Niger
- 16 K Sierra Leone
- 13 K Lesotho
- 10 K Jersey
- 8.7 K Cape Verde
- 8.3 K Isle Of Man
- 8.1 K Chad
- 7.9 K Andorra
- 7.1 K Gambia
- 6.9 K Virgin Islands, U.S.
- 5.7 K Timor-Leste
- 5.7 K Antigua And Barbuda
- 5.3 K Saint Vincent And Grenadines
- 4.9 K Guernsey
- 4.7 K Seychelles
- 4.4 K Burundi
- 3.9 K Djibouti
- 2.8 K Central African Republic
- 2.8 K Greenland
- 2.4 K Liechtenstein
- 2 K Virgin Islands, British
- 1.8 K San Marino
- 1.6 K Dominica
- 1.4 K Sao Tome And Principe
- 504 Solomon Islands
- 446 American Samoa
- 424 Vanuatu
- 401 Samoa
- 292 Anguilla
- 212 Tonga
- 179 Cook Islands
- 170 Micronesia, Federated States Of
- 111 Kiribati
- 102 Nauru
- 41 Montserrat
- 24 Niue
- 21 Saint Helena
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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) Total domains excluding spam domains212.5 million29 Mar, 23
371.6 billion29 Mar, 23
25.4 trillion29 Mar, 23