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.
2907 Servers
- 331K CPU cores
- 2.4PB RAM
- 51PB HDD
- 210PB 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
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.
508 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
- 10 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
- 6 M Philippines
- 5.3 M Ukraine
- 5 M Argentina
- 4.5 M Colombia
- 3.9 M Sweden
- 3.4 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 Belgium
- 2.5 M Pakistan
- 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
- 1.8 M Korea
- 1.8 M Hungary
- 1.6 M Finland
- 1.6 M Hong Kong
- 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
- 969 K Morocco
- 966 K Kazakhstan
- 941 K Slovakia
- 900 K Bulgaria
- 841 K Serbia
- 700 K Croatia
- 690 K Belarus
- 679 K Kenya
- 650 K Sri Lanka
- 631 K Iraq
- 584 K Guatemala
- 564 K Bolivia
- 526 K Dominican Republic
- 484 K Lithuania
- 483 K Nepal
- 473 K Costa Rica
- 420 K Uruguay
- 412 K Jordan
- 407 K Ghana
- 406 K Tunisia
- 349 K Panama
- 334 K Azerbaijan
- 325 K Paraguay
- 321 K Kuwait
- 316 K Slovenia
- 302 K Uzbekistan
- 301 K Puerto Rico
- 274 K Honduras
- 273 K El Salvador
- 249 K Bosnia & Herzegovina
- 246 K Qatar
- 245 K Lebanon
- 228 K Estonia
- 228 K Latvia
- 220 K Oman
- 206 K Georgia
- 203 K Tanzania
- 185 K Uganda
- 180 K Moldova
- 173 K Kyrgyzstan
- 167 K China
- 166 K Nicaragua
- 165 K Cyprus
- 158 K Myanmar
- 156 K Jamaica
- 153 K Côte d'Ivoire
- 138 K Zambia
- 138 K Libya
- 137 K Armenia
- 136 K Cambodia
- 133 K Cameroon
- 130 K Ethiopia
- 129 K Bahrain
- 128 K Senegal
- 125 K Palestinian Territory
- 122 K Trinidad And Tobago
- 121 K Congo, Democratic Republic
- 118 K North Macedonia
- 112 K Albania
- 103 K Luxembourg
- 96 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
- 28 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
- 16 K Congo
- 16 K Niger
- 16 K Sierra Leone
- 13 K Lesotho
- 10 K Jersey
- 8.7 K Cape Verde
- 8.2 K Isle Of Man
- 8.1 K Chad
- 7.9 K Andorra
- 7 K Gambia
- 6.9 K Virgin Islands, U.S.
- 5.7 K Antigua And Barbuda
- 5.6 K Timor-Leste
- 5.3 K Saint Vincent And Grenadines
- 4.8 K Guernsey
- 4.6 K Seychelles
- 4.4 K Burundi
- 3.9 K Djibouti
- 2.8 K Central African Republic
- 2.8 K Greenland
- 2.4 K Liechtenstein
- 1.9 K Virgin Islands, British
- 1.8 K San Marino
- 1.6 K Dominica
- 1.4 K Sao Tome And Principe
- 501 Solomon Islands
- 433 American Samoa
- 418 Vanuatu
- 399 Samoa
- 287 Anguilla
- 211 Tonga
- 176 Cook Islands
- 166 Micronesia, Federated States Of
- 110 Kiribati
- 100 Nauru
- 39 Montserrat
- 23 Niue
- 20 Saint Helena
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 domains