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.

4700
Servers
914
K
CPU cores
6
PB
RAM
33
PB
HDD
673
PB
SSD

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

Meet Yep1, our superfast supercomputer

Yep1, Ahrefs’ supercomputer, ranks among the Top 50 fastest supercomputers worldwide by Flops (floating point operations per second).

Data supplied as of May, 2024. See full report

23.32
PFlops

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
Pages
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
Pages

Total content index size

15.4B

Pages


Keyword index

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

216
Locations

Total keyword index size

12.0B

Filtered keywords

74.0B

Keywords ever seen

1.1BUnited States
452MUnited Kingdom
391MIndia
286MCanada
282MGermany
271MRussian Federation
251MBrazil
222MJapan
215MFrance
204MAustralia
179MIndonesia
169MPhilippines
169MSpain
165MMexico
153MItaly
145MTurkey
137MNetherlands
137MVietnam
124MPoland
122MKorea
112MArgentina
109MUkraine
107MMalaysia
95MColombia
95MTaiwan
87MThailand
85MPakistan
82MSouth Africa
81MSwitzerland
79MBelgium
76MEgypt
76MIran
74MSingapore
73MSweden
71MPeru
68MChile
67MAustria
67MUnited Arab Emirates
62MSaudi Arabia
59MBangladesh
59MIreland
56MRomania
53MPortugal
53MNew Zealand
49MHong Kong
47MMorocco
47MNorway
46MCzech Republic

1.1BUnited States
452MUnited Kingdom
391MIndia
286MCanada
282MGermany
271MRussian Federation
251MBrazil
222MJapan
215MFrance
204MAustralia
179MIndonesia
169MPhilippines
169MSpain
165MMexico
153MItaly
145MTurkey
137MNetherlands
137MVietnam
124MPoland
122MKorea
112MArgentina
109MUkraine
107MMalaysia
95MColombia
95MTaiwan
87MThailand
85MPakistan
82MSouth Africa
81MSwitzerland
79MBelgium
76MEgypt
76MIran

1.1BUnited States
452MUnited Kingdom
391MIndia
286MCanada
282MGermany
271MRussian Federation
251MBrazil
222MJapan
215MFrance
204MAustralia
179MIndonesia
169MPhilippines
169MSpain
165MMexico
153MItaly
145MTurkey


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
Locations
597
M
Keywords
159MUnited States
32MIndia
26MJapan
24MFrance
24MUnited Kingdom
22MBrazil
22MGermany
20MCanada
19MSpain
18MRussian Federation
17MAustralia
15MItaly
13MMexico
13MNetherlands
12MIndonesia
11MTurkey
9.4MPoland
6.9MThailand
6.8MColombia
6.6MPhilippines
6.5MArgentina
5.7MVietnam
4.7MUkraine
4.7MSweden
3.8MTaiwan
3.5MMalaysia
3.3MChile
3.1MSouth Africa
3.0MDenmark
3.0MNorway
2.9MPeru
2.7MSaudi Arabia
2.7MPakistan
2.7MEgypt
2.7MAustria
2.5MCzech Republic
2.5MNew Zealand
2.5MKorea
2.4MBelgium
2.2MUnited Arab Emirates
2.1MPortugal
2.0MRomania
1.9MFinland
1.9MHungary
1.9MSingapore
1.9MSwitzerland
1.9MGreece
1.8MHong Kong

159MUnited States
32MIndia
26MJapan
24MFrance
24MUnited Kingdom
22MBrazil
22MGermany
20MCanada
19MSpain
18MRussian Federation
17MAustralia
15MItaly
13MMexico
13MNetherlands
12MIndonesia
11MTurkey
9.4MPoland
6.9MThailand
6.8MColombia
6.6MPhilippines
6.5MArgentina
5.7MVietnam
4.7MUkraine
4.7MSweden
3.8MTaiwan
3.5MMalaysia
3.3MChile
3.1MSouth Africa
3.0MDenmark
3.0MNorway
2.9MPeru
2.7MSaudi Arabia

159MUnited States
32MIndia
26MJapan
24MFrance
24MUnited Kingdom
22MBrazil
22MGermany
20MCanada
19MSpain
18MRussian Federation
17MAustralia
15MItaly
13MMexico
13MNetherlands
12MIndonesia
11MTurkey


Backlink index

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
325.8
B
Domains (post-vetting)
207.1
M
Internal backlinks
22.3
T

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