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.

2986 Servers

344K CPU cores
2.5PB RAM
50PB HDD
207PB 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.

Every 24 hours we discover

30 million new pages
Every 24 hours we update metrics for

420 million pages
Total content index size

10 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.

Google

17 B
YouTube

1.3 B
Yahoo

261 M
Amazon

232 M
Yandex

170 M
Bing

157 M
Naver

33 M
Seznam

14 M
Baidu

5.7 M
Daum

3.3 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.

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

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