We’re powered by seriously big data

Ahrefs collects, processes, and stores large amounts of data for search marketing professionals.

Similar to search engines, we crawl the entire web 24/7 and store petabytes (1PB = 1000TB) of information about live websites – like how they link to each other and what keywords they rank for in search results.

We're also really proud of our backend infrastructure. Since no existing solution could keep up with the volume of data we operate, most of our software infrastructure was built in-house.

3600
Servers
757
K
CPU cores
5
PB
RAM
33
PB
HDD
534
PB
SSD

$900
mn
The amount we’d have to spend on the cloud in 3 years without our own infrastructure.
Watch reel

Most active web crawler in the SEO industry

AhrefsBot is the most active web crawler in the “Search Engine Optimization” category on Cloudflare Radar. It’s also the 3rd most active web crawler in the world.

Every minute, we crawl
5
M
Sidor
There are
170
T
Rows in our key-value database
/

Rank

Bot

Owner

Category

1

GoogleBot

Google

Search Engine Crawler

2

BingBot

Microsoft

Search Engine Crawler

3

DataDog Synthetic Bot

DataDog

Monitoring & Analytics

4

AhrefsBot

Ahrefs

Search Engine Optimization

5

Qualys

Qualys

Search Engine Crawler

6

YandexBot

Yandex

Search Engine Crawler

7

PetalBot

Huawei

Search Engine Crawler

8

Google AdsBot

Google

SAdvertising & Marketing

9

Google Image Proxy

Google

Page Preview

10

Google Images

Google

Search Engine Crawler

Bots ranked by number of requests. Data supplied as of April, 2023


Content index

Our content index powers Content Explorer, which is basically a content search engine.

Every 24 hours, we discover
10
M
New pages
Every 24 hours, we update metrics for
300
M
Sidor

Total content index size

14.9B

Sidor


Keyword index

This powers Keywords Explorer, our keyword research tool for finding what your prospective customers are searching for online.

216
Platser

Total keyword index size

12.0B

Filtered keywords

74.0B

Keywords ever seen

1.2BUnited States
616mnUnited Kingdom
581mnIndia
515mnRussian Federation
435mnCanada
420mnGermany
396mnBrazil
347mnIndonesia
325mnFrance
322mnAustralia
303mnPhilippines
299mnJapan
273mnSpain
273mnMexico
272mnTurkey
270mnVietnam
251mnItaly
233mnKorea
230mnNetherlands
227mnUkraine
212mnPoland
208mnArgentina
202mnMalaysia
191mnThailand
181mnPakistan
181mnTaiwan
179mnColombia
165mnEgypt
161mnSingapore
160mnBangladesh
158mnSouth Africa
147mnSwitzerland
146mnUnited Arab Emirates
144mnSweden
138mnBelgium
123mnPeru
120mnSaudi Arabia
118mnIreland
117mnIran
114mnChile
114mnRomania
111mnAustria
109mnMorocco
107mnNew Zealand
106mnPortugal
99mnAlgeria
97mnCzech Republic
94mnHong Kong

1.2BUnited States
616mnUnited Kingdom
581mnIndia
515mnRussian Federation
435mnCanada
420mnGermany
396mnBrazil
347mnIndonesia
325mnFrance
322mnAustralia
303mnPhilippines
299mnJapan
273mnSpain
273mnMexico
272mnTurkey
270mnVietnam
251mnItaly
233mnKorea
230mnNetherlands
227mnUkraine
212mnPoland
208mnArgentina
202mnMalaysia
191mnThailand
181mnPakistan
181mnTaiwan
179mnColombia
165mnEgypt
161mnSingapore
160mnBangladesh
158mnSouth Africa
147mnSwitzerland

1.2BUnited States
616mnUnited Kingdom
581mnIndia
515mnRussian Federation
435mnCanada
420mnGermany
396mnBrazil
347mnIndonesia
325mnFrance
322mnAustralia
303mnPhilippines
299mnJapan
273mnSpain
273mnMexico
272mnTurkey
270mnVietnam


Organic search traffic index

Our database of search queries and the amount of search traffic they send to top-ranking pages. It powers search traffic estimations in Site Explorer.

189
Platser
536
M
Sökord
139mnUnited States
29mnIndia
25mnJapan
23mnUnited Kingdom
22mnGermany
21mnFrance
19mnBrazil
17mnCanada
16mnSpain
16mnRussian Federation
15mnAustralia
14mnItaly
13mnIndonesia
12mnNetherlands
11mnMexico
11mnTurkey
9.6mnPoland
6.5mnThailand
6.0mnVietnam
5.7mnPhilippines
5.4mnColombia
5.2mnArgentina
5.0mnUkraine
4.8mnSweden
4.0mnTaiwan
3.0mnMalaysia
2.9mnDenmark
2.8mnSouth Africa
2.8mnChile
2.7mnNorway
2.7mnAustria
2.6mnSaudi Arabia
2.4mnPeru
2.3mnEgypt
2.3mnCzech Republic
2.3mnBelgium
2.3mnPakistan
2.2mnNew Zealand
2.0mnGreece
2.0mnFinland
1.9mnRomania
1.9mnUnited Arab Emirates
1.9mnKorea
1.9mnHong Kong
1.9mnHungary
1.9mnPortugal
1.8mnSwitzerland
1.8mnSingapore

139mnUnited States
29mnIndia
25mnJapan
23mnUnited Kingdom
22mnGermany
21mnFrance
19mnBrazil
17mnCanada
16mnSpain
16mnRussian Federation
15mnAustralia
14mnItaly
13mnIndonesia
12mnNetherlands
11mnMexico
11mnTurkey
9.6mnPoland
6.5mnThailand
6.0mnVietnam
5.7mnPhilippines
5.4mnColombia
5.2mnArgentina
5.0mnUkraine
4.8mnSweden
4.0mnTaiwan
3.0mnMalaysia
2.9mnDenmark
2.8mnSouth Africa
2.8mnChile
2.7mnNorway
2.7mnAustria
2.6mnSaudi Arabia

139mnUnited States
29mnIndia
25mnJapan
23mnUnited Kingdom
22mnGermany
21mnFrance
19mnBrazil
17mnCanada
16mnSpain
16mnRussian Federation
15mnAustralia
14mnItaly
13mnIndonesia
12mnNetherlands
11mnMexico
11mnTurkey


Länkindex

The world's largest index of live backlinks, updated with fresh data every 15–30 minutes. This index powers backlink data in Site Explorer, and is used to calculate our proprietary metrics: Ahrefs Rank, Domain Rating and URL Rating.

External backlinks history

35.0T

Records

Pages in index
373.2
B
Domains (post-vetting)
213.4
M
Interna länkar
25.3
T

© 2024 Ahrefs Pte. Ltd. (201227417H) 16 Raffles Quay, #33-03 Hong Leong Building, Singapore 048581