User-Agent

Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)

first seen 2026-06-18 18:57 · last seen 2026-10-30 22:44 · JSON

Last 7 days (44 observations)

Distinct clients per day (last 30 days, peak 4102/day)

Distinct clients are counted by IP-hash per complete UTC day — unlike observation counts this is insensitive to one chatty client, but NAT merges clients and address rotation splits them.

Decomposed attributes

Browser / clientAhrefsBot 7.0
Device classbot
Declared URLhttp://ahrefs.com/robot/
Noteinferred from the self-declared string — a claim, not a measurement; compare with the wire fingerprints above

Co-observed signals

Signals from other families seen in the same observation. A fingerprint spread thinly across many lower-layer signatures is a classic inconsistency signal.

TLS ClientHello (JA4)

fingerprintco-occurrences
t13d3112h2_e8f1e7e78f70_b26ce05bbdd6 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.5.0, php-curl 7.88.1.The fingerprint page shows the full measured match list. More on the catalog.18834
t13d3012h2_1d37bd780c83_882d495ac381 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.21.0, curl 8.22.0, curl 8.23.0, +7 more.The fingerprint page shows the full measured match list. More on the catalog.1

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn060000_2a1d139103bd_000000000000_00000000000018795
ge20nn070000_475aaf807767_000000000000_00000000000039
ge20nn030000_ff50983941c1_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
3:100;4:65536;2:0|1048510465|0|m,s,a,p Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.13.0, curl 8.18.0, curl 8.21.0, +8 more.The fingerprint page shows the full measured match list. More on the catalog.18835

TCP SYN (p0f)

fingerprintco-occurrences
4:47+17:0:1460:65535,14:mss,sok,ts,nop,ws:df,id+,ecn:05461
4:48+16:0:1460:65535,14:mss,sok,ts,nop,ws:df,id+,ecn:04714
4:45+19:0:1460:65535,14:mss,sok,ts,nop,ws:df,id+,ecn:04491
4:46+18:0:1460:65535,14:mss,sok,ts,nop,ws:df,id+,ecn:01791
4:49+15:0:1460:65535,14:mss,sok,ts,nop,ws:df,id+,ecn:01389
4:44+20:0:1460:65535,14:mss,sok,ts,nop,ws:df,id+,ecn:0960
4:50+14:0:1460:65535,14:mss,sok,ts,nop,ws:df,id+,ecn:015
4:47+17:0:1460:65535,14:mss,sok,ts,nop,ws:df,id+:05
4:48+16:0:1460:65535,14:mss,sok,ts,nop,ws:df,id+:05
4:45+19:0:1460:65535,14:mss,sok,ts,nop,ws:df,id+:02

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-4-8-1-3_1460_1418794
65535_2-1-3-1-1-8-4-0-0_1386_61

Country

fingerprintco-occurrences
US · United States6092
CA · Canada3907
GB · United Kingdom3566
FR · France3346
DE · Germany1923
AE · United Arab Emirates1

Network (ASN)

fingerprintco-occurrences
AS16276 · OVH SAS18811
AS140577 · Ahrefs Pte Ltd23
AS15802 · Emirates Integrated Telecommunications Company PJSC1

TLS supported groups

fingerprintco-occurrences
001d,0017,001e,0019,0018,0100,0101,0102,0103,0104 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.13.0, php-guzzle 8.3.1, curl 7.88.1, +10 more.The fingerprint page shows the full measured match list. More on the catalog.116
11ec,001d,0017,001e,0018,0019,0100,0101 Match?Exact match in Thumbprint's published controlled catalog captures: python-httpx 0.28.1, python-requests 2.34.2, curl 8.23.0, +4 more.The fingerprint page shows the full measured match list. More on the catalog.1