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.

2000 Servers

64K CPU cores
400TB RAM
40PB+ HDD
10PB 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

350 million pages
Total content index size

5.02 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.

6.3 billion keywords. 10 search engines. 171 countries.

Google

6.3 B
YouTube

0
Amazon

0
Bing

0
Yandex

0
Yahoo

0
Baidu

0
Daum

0
Naver

0
Seznam

0

6.3 billion keywords

2.8 B United States
404 M Brazil
313 M United Kingdom
272 M France
158 M Germany
150 M Spain
135 M Poland
133 M Italy
126 M Canada
110 M Mexico
108 M Japan
99 M Argentina
99 M Russian Federation
98 M Australia
89 M India
75 M Colombia
61 M Ukraine
46 M Turkey
45 M Chile
44 M Indonesia
43 M Netherlands
43 M Czechia
39 M Philippines
37 M Taiwan
35 M Belgium
33 M Peru
31 M Venezuela
30 M Hungary
30 M Greece
25 M Ecuador
24 M Finland
24 M Thailand
23 M Sweden
23 M Romania
23 M Portugal
22 M Norway
20 M Malaysia
20 M South Africa
20 M Egypt
19 M Vietnam
19 M New Zealand
19 M Pakistan
18 M Korea
17 M Austria
16 M Switzerland
16 M Denmark
15 M Morocco
15 M Algeria
14 M Serbia
14 M Slovakia
14 M Israel
13 M Bulgaria
13 M Hong Kong
11 M Saudi Arabia
11 M Ireland
11 M Croatia
11 M Singapore
11 M Bolivia
9.9 M Uruguay
9.6 M Belarus
7.9 M Costa Rica
7.9 M Dominican Republic
7.7 M Kazakhstan
7.7 M Tunisia
6.9 M Lithuania
6.7 M Guatemala
6.5 M Slovenia
6.3 M Bangladesh
6 M Sri Lanka
5.8 M United Arab Emirates
5.3 M Nigeria
5.2 M Panama
4.7 M Estonia
4.7 M El Salvador
4.5 M Latvia
4.5 M Paraguay
4.5 M Bosnia & Herzegovina
3.8 M Honduras
3.5 M Kenya
3.3 M Moldova
2.8 M Trinidad And Tobago
2.5 M Puerto Rico
2.4 M Azerbaijan
2.4 M Jamaica
2.3 M Mauritius
2.3 M Jordan
2 M Reunion
2 M North Macedonia
2 M Armenia
1.9 M Georgia
1.9 M Nicaragua
1.8 M Ghana
1.6 M Nepal
1.6 M Iraq
1.5 M Malta
1.4 M Lebanon
1.4 M Cyprus
1.3 M Albania
1.3 M Qatar
1.2 M Palestinian Territory
1.2 M Luxembourg
1.2 M Kuwait
1.1 M Madagascar
1.1 M Côte d'Ivoire
1.1 M Cameroon
997 K Oman
920 K Senegal
900 K Angola
890 K Iceland
849 K Zimbabwe
806 K Cambodia
780 K Guadeloupe
759 K Martinique
754 K Montenegro
741 K Tanzania
719 K Bahrain
679 K Yemen
640 K Kyrgyzstan
598 K Libya
595 K Mongolia
566 K Ethiopia
558 K Mozambique
534 K New Caledonia
461 K Zambia
452 K Namibia
451 K Fiji
409 K Haiti
405 K Brunei Darussalam
361 K French Polynesia
357 K Guyana
336 K French Guiana
326 K Belize
321 K Botswana
295 K Bahamas
252 K Gabon
223 K Congo, Democratic Republic
211 K Suriname
208 K Maldives
208 K Afghanistan
198 K Guam
196 K Rwanda
186 K Cape Verde
177 K Mayotte
176 K Saint Lucia
168 K Laos
155 K Antigua And Barbuda
146 K Benin
129 K Andorra
119 K Aruba
119 K Saint Vincent And Grenadines
111 K Grenada
110 K Burkina Faso
107 K Togo
93 K Malawi
86 K Tajikistan
79 K Congo
77 K Bhutan
75 K Seychelles
73 K Cayman Islands
72 K Djibouti
71 K Mali
69 K Monaco
64 K Saint Kitts And Nevis
62 K Mauritania
59 K Faroe Islands
53 K Virgin Islands, U.S.
50 K Gibraltar
50 K Guinea
34 K Niger
19 K Equatorial Guinea

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.

491 million keywords. 155 countries

165 M United States
27 M Japan
22 M United Kingdom
19 M Germany
19 M France
18 M India
16 M Australia
16 M Canada
14 M Brazil
14 M Italy
13 M Russian Federation
11 M Spain
11 M Turkey
9.5 M Mexico
9 M Indonesia
8.8 M Poland
6.2 M Netherlands
5.4 M Ukraine
5.2 M Vietnam
4.7 M Argentina
4.4 M Thailand
3.6 M Sweden
3.5 M Colombia
3.1 M Taiwan
2.7 M Philippines
2.4 M Austria
2.3 M Chile
2.3 M Denmark
2.1 M Egypt
2 M Peru
2 M Israel
1.9 M Belgium
1.9 M Greece
1.9 M Czechia
1.7 M Pakistan
1.7 M Malaysia
1.7 M Venezuela
1.6 M Hungary
1.6 M Singapore
1.6 M Korea
1.6 M Romania
1.6 M Norway
1.6 M Hong Kong
1.4 M Algeria
1.4 M Finland
1.3 M South Africa
1.3 M Saudi Arabia
1.3 M Portugal
1.2 M New Zealand
1.1 M Switzerland
1.1 M Ecuador
1 M Morocco
901 K Bulgaria
784 K Serbia
764 K Slovakia
763 K Ireland
636 K Croatia
609 K Kazakhstan
581 K United Arab Emirates
569 K Belarus
469 K Bangladesh
455 K Sri Lanka
420 K Lithuania
418 K Tunisia
415 K Dominican Republic
401 K Uruguay
391 K Bolivia
383 K Nigeria
372 K Costa Rica
353 K Slovenia
329 K Guatemala
307 K Iraq
307 K Azerbaijan
260 K Kenya
260 K Bosnia & Herzegovina
243 K Latvia
232 K Panama
228 K Puerto Rico
223 K Estonia
222 K Jordan
209 K El Salvador
205 K Paraguay
193 K Moldova
179 K Georgia
166 K Armenia
161 K Honduras
141 K Ghana
133 K Qatar
133 K Kuwait
132 K Lebanon
128 K Palestinian Territory
127 K Jamaica
127 K Trinidad And Tobago
117 K North Macedonia
109 K Nepal
106 K Nicaragua
99 K Mauritius
98 K Tanzania
94 K Oman
93 K Cyprus
92 K Albania
88 K Côte d'Ivoire
71 K Malta
70 K Senegal
69 K Luxembourg
69 K Cameroon
68 K Kyrgyzstan
64 K Cambodia
60 K Bahrain
57 K Libya
55 K Angola
53 K Mozambique
53 K Iceland
50 K Guadeloupe
50 K Zimbabwe
49 K Montenegro
48 K Mongolia
44 K Ethiopia
40 K Madagascar
31 K Zambia
30 K Haiti
30 K Namibia
24 K Brunei Darussalam
23 K Fiji
22 K Bahamas
20 K Afghanistan
20 K Laos
19 K Guyana
19 K Congo, Democratic Republic
18 K Suriname
17 K Tajikistan
17 K Botswana
17 K Gabon
17 K Maldives
14 K Rwanda
14 K Burkina Faso
13 K Belize
12 K Congo
11 K Benin
10 K Cape Verde
9.8 K Mali
8.8 K Togo
7.8 K Bhutan
7.7 K Saint Vincent And Grenadines
6.8 K Malawi
6.6 K Andorra
6.5 K Niger
6.2 K Antigua And Barbuda
5.7 K Djibouti
5 K Virgin Islands, U.S.
4 K Seychelles
3.8 K 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