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.

2600 Servers

205K CPU cores
1.5PB RAM
50PB HDD
130PB 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

8.6 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.

12 billion keywords. 10 search engines. 229 countries.

Google

9.8 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

12 billion keywords

4 B United States
649 M Brazil
430 M France
386 M United Kingdom
257 M Germany
237 M Spain
223 M Poland
211 M Italy
184 M Mexico
174 M Japan
172 M Canada
172 M Russian Federation
171 M India
161 M Argentina
129 M Colombia
124 M Australia
102 M Ukraine
87 M Indonesia
79 M Turkey
76 M Chile
72 M Philippines
69 M Netherlands
66 M Czechia
62 M Taiwan
59 M Venezuela
59 M Belgium
57 M Peru
49 M Greece
48 M Hungary
47 M Thailand
44 M Ecuador
41 M Vietnam
41 M Malaysia
41 M Romania
40 M Finland
38 M Sweden
37 M Portugal
37 M Pakistan
36 M Egypt
34 M South Africa
33 M Korea
30 M Austria
29 M Switzerland
28 M Algeria
28 M Norway
27 M Morocco
26 M New Zealand
25 M Denmark
24 M Serbia
24 M Saudi Arabia
23 M Slovakia
22 M Bulgaria
21 M Israel
20 M Hong Kong
19 M Ireland
19 M Singapore
19 M Croatia
18 M Bolivia
17 M Uruguay
17 M Belarus
15 M Dominican Republic
14 M Kazakhstan
14 M Costa Rica
14 M Tunisia
13 M United Arab Emirates
13 M Bangladesh
12 M Lithuania
11 M Guatemala
11 M Slovenia
11 M Nigeria
11 M Sri Lanka
8.9 M Panama
8.3 M El Salvador
8.3 M Bosnia & Herzegovina
8.2 M Latvia
8.2 M Paraguay
7.7 M Estonia
6.6 M Honduras
6.3 M Kenya
6.2 M Moldova
5 M Azerbaijan
5 M Puerto Rico
4.8 M Jordan
4.4 M Iraq
4.4 M Trinidad And Tobago
4 M Armenia
3.9 M Mauritius
3.7 M Reunion
3.7 M Jamaica
3.7 M Nicaragua
3.6 M Nepal
3.6 M North Macedonia
3.6 M Ghana
3.5 M Georgia
3 M Palestinian Territory
2.8 M Lebanon
2.7 M Qatar
2.7 M Kuwait
2.6 M Cyprus
2.5 M Albania
2.4 M Malta
2.2 M Oman
2.1 M Luxembourg
2.1 M Côte d'Ivoire
2 M Cameroon
1.9 M Madagascar
1.8 M Cambodia
1.8 M Senegal
1.6 M Yemen
1.6 M Angola
1.6 M Bahrain
1.6 M Tanzania
1.5 M Montenegro
1.5 M Iceland
1.5 M Zimbabwe
1.5 M Guadeloupe
1.4 M Kyrgyzstan
1.4 M Martinique
1.4 M Libya
1.2 M Ethiopia
1.1 M Mozambique
1.1 M Mongolia
967 K Zambia
960 K New Caledonia
814 K Namibia
803 K Uzbekistan
787 K China
785 K Haiti
758 K Brunei Darussalam
708 K Fiji
678 K Myanmar
651 K Guyana
635 K French Guiana
631 K French Polynesia
595 K Botswana
563 K Congo, Democratic Republic
544 K Uganda
541 K Belize
527 K Sudan
522 K Bahamas
519 K Afghanistan
479 K Gabon
457 K Maldives
441 K Laos
396 K Suriname
350 K Rwanda
350 K Guam
341 K Benin
330 K Cape Verde
313 K Mayotte
292 K Saint Lucia
291 K Burkina Faso
265 K Antigua And Barbuda
262 K Tajikistan
244 K Andorra
238 K Togo
227 K Turkmenistan
218 K Aruba
210 K Malawi
209 K Mali
188 K Saint Vincent And Grenadines
187 K Congo
185 K Bhutan
185 K Grenada
162 K Mauritania
159 K Guinea
136 K Djibouti
136 K Seychelles
135 K Cayman Islands
131 K Somalia
128 K Monaco
119 K Faroe Islands
118 K Saint Kitts And Nevis
114 K Virgin Islands, U.S.
110 K Macao
101 K Niger
94 K Papua New Guinea
87 K Gibraltar
64 K Swaziland
60 K Lesotho
59 K Sierra Leone
55 K Jersey
47 K Isle Of Man
42 K Liberia
36 K Equatorial Guinea
32 K Gambia
30 K Syrian Arab Republic
28 K Guernsey
27 K Greenland
27 K Bermuda
24 K Timor-Leste
24 K Chad
17 K Burundi
17 K Liechtenstein
12 K Virgin Islands, British
12 K Cuba
9.1 K San Marino
9 K Dominica
8.9 K Northern Mariana Islands
8.8 K Turks And Caicos Islands
8.7 K Guinea-Bissau
7.2 K Central African Republic
464 Aland Islands
257 Samoa
248 Solomon Islands
216 American Samoa
214 Vanuatu
137 Saint Martin
131 Tonga
117 Comoros
114 Sao Tome And Principe
81 Micronesia, Federated States Of
79 Saint Barthelemy
78 Anguilla
56 Saint Helena
55 Eritrea
46 Palau
44 Cook Islands
39 Marshall Islands
24 Svalbard And Jan Mayen
19 Montserrat
19 Saint Pierre And Miquelon
13 Falkland Islands (Malvinas)

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.

610 million keywords. 186 countries

206 M United States
33 M Japan
29 M India
26 M United Kingdom
23 M Germany
19 M France
18 M Canada
18 M Australia
15 M Italy
14 M Indonesia
13 M Brazil
13 M Turkey
13 M Russian Federation
12 M Spain
12 M Mexico
9.8 M Poland
7.7 M Netherlands
6.9 M Vietnam
6.7 M Thailand
6.2 M Ukraine
5.7 M Argentina
5 M Philippines
4.8 M Colombia
4.4 M Sweden
3.9 M Taiwan
3.1 M Malaysia
3.1 M Chile
2.8 M Belgium
2.8 M Austria
2.7 M Denmark
2.7 M South Africa
2.6 M Egypt
2.5 M Peru
2.5 M Saudi Arabia
2.4 M Pakistan
2.4 M Israel
2.3 M Greece
2.3 M Czechia
2.3 M Singapore
2.3 M Romania
2.2 M Korea
2 M Hungary
2 M Switzerland
1.9 M Norway
1.9 M Hong Kong
1.8 M Finland
1.8 M Portugal
1.6 M New Zealand
1.5 M Venezuela
1.4 M Ireland
1.3 M Algeria
1.3 M United Arab Emirates
1.3 M Ecuador
1.2 M Morocco
1.1 M Nigeria
1 M Bulgaria
1 M Slovakia
991 K Bangladesh
943 K Serbia
919 K Kazakhstan
789 K Croatia
762 K Belarus
662 K Sri Lanka
563 K Iraq
552 K Dominican Republic
552 K Bolivia
552 K Kenya
544 K Guatemala
540 K Lithuania
519 K Costa Rica
487 K Tunisia
471 K Uruguay
401 K Slovenia
391 K Azerbaijan
371 K Nepal
371 K Jordan
334 K Ghana
332 K Panama
323 K Puerto Rico
304 K Paraguay
302 K Bosnia & Herzegovina
291 K El Salvador
284 K Latvia
280 K Kuwait
270 K Estonia
254 K Honduras
233 K Georgia
227 K Qatar
227 K Lebanon
221 K Moldova
208 K Uzbekistan
186 K Oman
178 K Armenia
176 K Cyprus
171 K Jamaica
164 K Nicaragua
164 K Tanzania
158 K Palestinian Territory
151 K Trinidad And Tobago
149 K Kyrgyzstan
147 K Côte d'Ivoire
146 K North Macedonia
131 K Cambodia
128 K Albania
126 K Bahrain
124 K Myanmar
121 K Cameroon
120 K Uganda
120 K Libya
118 K Senegal
115 K Mauritius
110 K Ethiopia
109 K China
107 K Luxembourg
99 K Malta
91 K Zambia
89 K Zimbabwe
89 K Angola
78 K Mozambique
75 K Mongolia
70 K Iceland
68 K Montenegro
66 K Congo, Democratic Republic
59 K Guadeloupe
55 K Haiti
50 K Afghanistan
50 K Laos
49 K Namibia
45 K Madagascar
44 K Turkmenistan
42 K Brunei Darussalam
38 K Tajikistan
35 K Maldives
34 K Burkina Faso
34 K Botswana
33 K Benin
32 K Bahamas
31 K Fiji
31 K Mali
30 K Guyana
30 K Rwanda
28 K Somalia
26 K Suriname
25 K Gabon
22 K Togo
20 K Belize
19 K Bhutan
17 K Congo
16 K Papua New Guinea
16 K Malawi
13 K Niger
12 K Cape Verde
11 K Sierra Leone
9.5 K Lesotho
9.3 K Andorra
8.5 K Saint Vincent And Grenadines
7.8 K Virgin Islands, U.S.
7.8 K Jersey
7.5 K Antigua And Barbuda
6.2 K Isle Of Man
6 K Djibouti
5.3 K Seychelles
5.3 K Gambia
4.6 K Cuba
4.4 K Gibraltar
4.4 K Chad
3.7 K Timor-Leste
3.6 K Guernsey
2.9 K Burundi
2.2 K Greenland
1.8 K Liechtenstein
1.2 K San Marino
1.1 K Dominica
1.1 K Central African Republic
954 Virgin Islands, British
65 American Samoa
65 Solomon Islands
57 Samoa
46 Vanuatu
44 Sao Tome And Principe
24 Tonga
21 Micronesia, Federated States Of
19 Anguilla
19 Cook Islands
10 Saint Helena
1 Montserrat

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