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.

3072 Servers

324K CPU cores
2.3PB RAM
50PB HDD
156PB 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.

19.8 billion keywords. 10 search engines. 243 countries.

Google

18 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

19.8 billion keywords

4.4 B United States
839 M Brazil
610 M United Kingdom
548 M France
471 M India
446 M Germany
383 M Canada
356 M Spain
335 M Russian Federation
329 M Mexico
318 M Italy
317 M Poland
301 M Japan
292 M Indonesia
276 M Argentina
271 M Australia
235 M Philippines
228 M Colombia
220 M Turkey
208 M Vietnam
201 M Ukraine
179 M Netherlands
178 M Malaysia
177 M Thailand
153 M Taiwan
144 M Korea
139 M Chile
132 M Peru
132 M Pakistan
132 M Belgium
120 M South Africa
115 M Sweden
114 M Egypt
111 M Czechia
108 M Switzerland
105 M Singapore
104 M Venezuela
101 M United Arab Emirates
101 M Ecuador
100 M Romania
97 M Saudi Arabia
95 M Greece
92 M Austria
89 M Bangladesh
88 M Hungary
87 M Portugal
87 M Algeria
86 M Morocco
82 M Ireland
76 M New Zealand
76 M Finland
73 M Hong Kong
72 M Norway
69 M Denmark
64 M Serbia
64 M Israel
59 M Nigeria
57 M Bulgaria
55 M Dominican Republic
54 M Kazakhstan
50 M Bolivia
49 M Slovakia
48 M Sri Lanka
48 M Belarus
48 M Iraq
44 M Tunisia
44 M Croatia
43 M Kenya
43 M Nepal
42 M Costa Rica
41 M Guatemala
38 M Uruguay
37 M Lithuania
34 M Panama
33 M Jordan
31 M Paraguay
31 M Palestinian Territory
30 M Georgia
30 M Qatar
30 M Slovenia
29 M Lebanon
29 M Honduras
29 M Cambodia
28 M Kuwait
28 M China
28 M Latvia
28 M Ghana
28 M El Salvador
27 M Azerbaijan
27 M Puerto Rico
26 M Bosnia & Herzegovina
23 M Moldova
22 M Estonia
22 M Oman
21 M Jamaica
21 M Trinidad And Tobago
20 M Uzbekistan
20 M Myanmar
19 M Cyprus
18 M Libya
17 M Albania
17 M Nicaragua
17 M Bahrain
17 M Ethiopia
17 M Armenia
17 M North Macedonia
16 M Yemen
16 M Syrian Arab Republic
16 M Luxembourg
15 M Sudan
14 M Uganda
14 M Mongolia
14 M Mauritius
14 M Tanzania
13 M Kyrgyzstan
12 M Malta
11 M Zimbabwe
11 M Cameroon
11 M Côte d'Ivoire
11 M Cuba
11 M Reunion
11 M Senegal
11 M Zambia
10 M Laos
10 M Afghanistan
8.9 M Angola
8.2 M Brunei Darussalam
8.2 M Montenegro
7.9 M Madagascar
7.9 M Iceland
7.5 M Mozambique
7.2 M Congo, Democratic Republic
7.1 M Namibia
7.1 M Maldives
7.1 M Haiti
6.8 M Turkmenistan
6.7 M Bahamas
6.4 M Botswana
5.7 M Guyana
5.5 M Guadeloupe
5.5 M Macao
5.4 M Somalia
5.1 M Martinique
4.9 M Belize
4.8 M Rwanda
4.7 M Suriname
4.5 M Tajikistan
4.4 M Benin
4.3 M Togo
4.2 M Fiji
4.2 M Guam
3.8 M Gabon
3.8 M Mauritania
3.7 M Mali
3.7 M Malawi
3.4 M Papua New Guinea
3.1 M Burkina Faso
3.1 M Bhutan
2.8 M Jersey
2.8 M Swaziland
2.8 M New Caledonia
2.7 M Saint Lucia
2.6 M Niger
2.5 M Isle Of Man
2.5 M Aruba
2.5 M French Polynesia
2.5 M French Guiana
2.5 M Congo
2.3 M Lesotho
2.3 M Andorra
2.3 M Antigua And Barbuda
2.3 M Guinea
2.3 M Seychelles
2.2 M Sierra Leone
2.1 M Cayman Islands
2 M Gambia
2 M Grenada
1.9 M Bermuda
1.9 M Cape Verde
1.9 M Liberia
1.8 M Virgin Islands, U.S.
1.8 M Guernsey
1.7 M Virgin Islands, British
1.6 M Saint Vincent And Grenadines
1.3 M Liechtenstein
1.3 M Timor-Leste
1.3 M Saint Kitts And Nevis
1.3 M Faroe Islands
1.2 M Chad
1.2 M Mayotte
1.2 M Greenland
1.2 M Djibouti
1.2 M Dominica
1.2 M Gibraltar
1.2 M Monaco
1.1 M Aland Islands
1.1 M Burundi
933 K Turks And Caicos Islands
781 K Equatorial Guinea
770 K San Marino
716 K Northern Mariana Islands
654 K Western Sahara
554 K Solomon Islands
500 K Vanuatu
496 K Sao Tome And Principe
487 K Samoa
476 K Comoros
451 K Guinea-Bissau
432 K Saint Martin
428 K American Samoa
423 K Anguilla
384 K Central African Republic
340 K Tonga
290 K Micronesia, Federated States Of
279 K Palau
232 K Saint Barthelemy
215 K Kiribati
207 K Cook Islands
198 K Marshall Islands
160 K Eritrea
112 K Svalbard And Jan Mayen
109 K Nauru
93 K Saint Pierre And Miquelon
78 K Montserrat
68 K Falkland Islands (Malvinas)
52 K Saint Helena
36 K British Indian Ocean Territory
32 K Wallis And Futuna
29 K Antarctica
24 K Tuvalu
22 K Norfolk Island
18 K Christmas Island
11 K Niue
3.5 K Tokelau
982 United States Outlying Islands
12 Cocos (Keeling) Islands
8 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.

485 million keywords. 189 countries

147 M United States
29 M India
28 M Japan
20 M United Kingdom
19 M Germany
14 M France
13 M Indonesia
13 M Canada
12 M Australia
11 M Turkey
11 M Italy
11 M Brazil
9.8 M Mexico
9.4 M Spain
8.8 M Russian Federation
8.7 M Poland
6.6 M Thailand
6.3 M Netherlands
6.3 M Vietnam
5.2 M Philippines
5.1 M Ukraine
4.6 M Argentina
4 M Colombia
3.7 M Sweden
3.4 M Taiwan
3 M Malaysia
2.7 M South Africa
2.6 M Chile
2.6 M Saudi Arabia
2.3 M Egypt
2.3 M Belgium
2.3 M Peru
2.2 M Pakistan
2.1 M Denmark
2.1 M Austria
2 M Greece
2 M Romania
1.9 M Czechia
1.8 M Israel
1.8 M Korea
1.8 M Switzerland
1.8 M Singapore
1.7 M Hungary
1.6 M Hong Kong
1.5 M Finland
1.5 M Norway
1.5 M Portugal
1.3 M Nigeria
1.3 M Ireland
1.3 M United Arab Emirates
1.3 M New Zealand
1.1 M Bangladesh
1.1 M Ecuador
1.1 M Venezuela
998 K Algeria
910 K Morocco
894 K Slovakia
890 K Kazakhstan
861 K Bulgaria
791 K Serbia
662 K Croatia
648 K Belarus
597 K Kenya
589 K Sri Lanka
572 K Iraq
509 K Guatemala
490 K Bolivia
478 K Dominican Republic
454 K Lithuania
426 K Costa Rica
417 K Nepal
381 K Tunisia
380 K Uruguay
375 K Jordan
357 K Ghana
314 K Azerbaijan
307 K Panama
303 K Slovenia
293 K Kuwait
291 K Paraguay
279 K Puerto Rico
271 K Uzbekistan
245 K El Salvador
240 K Honduras
236 K Bosnia & Herzegovina
222 K Lebanon
219 K Qatar
218 K Estonia
216 K Latvia
199 K Oman
190 K Georgia
181 K Tanzania
171 K Moldova
161 K Uganda
160 K Kyrgyzstan
155 K Cyprus
151 K China
148 K Nicaragua
145 K Jamaica
143 K Myanmar
141 K Côte d'Ivoire
131 K Armenia
125 K Libya
123 K Cambodia
123 K Zambia
121 K Cameroon
119 K Palestinian Territory
118 K Bahrain
117 K Senegal
116 K Ethiopia
115 K Trinidad And Tobago
113 K North Macedonia
105 K Albania
102 K Congo, Democratic Republic
98 K Luxembourg
88 K Mauritius
87 K Zimbabwe
84 K Malta
81 K Angola
74 K Mozambique
69 K Mongolia
62 K Montenegro
58 K Laos
56 K Iceland
56 K Turkmenistan
56 K Haiti
53 K Afghanistan
48 K Namibia
44 K Guadeloupe
41 K Tajikistan
40 K Burkina Faso
38 K Cuba
38 K Brunei Darussalam
38 K Mali
36 K Benin
36 K Madagascar
35 K Somalia
35 K Maldives
34 K Botswana
30 K Rwanda
28 K Bahamas
27 K Guyana
26 K Fiji
25 K Gabon
23 K Togo
22 K Suriname
20 K Papua New Guinea
18 K Bhutan
18 K Malawi
18 K Belize
15 K Congo
15 K Niger
14 K Sierra Leone
12 K Lesotho
9.5 K Jersey
8.4 K Cape Verde
7.6 K Andorra
7.5 K Isle Of Man
7.2 K Chad
6.7 K Virgin Islands, U.S.
6.4 K Gambia
5.4 K Antigua And Barbuda
5.3 K Saint Vincent And Grenadines
5.2 K Timor-Leste
4.5 K Seychelles
4.5 K Guernsey
4.1 K Burundi
3.8 K Djibouti
2.8 K Gibraltar
2.6 K Greenland
2.5 K Central African Republic
2.3 K Liechtenstein
1.8 K Virgin Islands, British
1.6 K San Marino
1.5 K Dominica
1.4 K Sao Tome And Principe
383 Vanuatu
376 Solomon Islands
332 Samoa
320 American Samoa
254 Anguilla
185 Tonga
145 Cook Islands
141 Micronesia, Federated States Of
85 Kiribati
82 Nauru
35 Montserrat
19 Saint Helena
5 Niue

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)

213.9 million28 May, 22

Pages in index

404 billion28 May, 22

Internal backlinks

27 trillion28 May, 22

External backlinks