User-Agent

Mozilla/5.0 (compatible; DuckDuckBot/1.1; +http://duckduckgo.com/duckduckbot.html)

first seen 2026-07-04 07:18 · last seen 2026-09-12 05:24 · JSON

Last 7 days (2 observations)

Distinct clients per day (last 30 days, peak 1/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 / clientDuckDuckBot 1.1
Device classbot
Declared URLhttp://duckduckgo.com/duckduckbot.html
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
t13d1011h1_61a7ad8aa9b6_3a8073edd8ef17

HTTP request (JA4H)

fingerprintco-occurrences
ge11nr040000_8b1ed2202073_000000000000_00000000000010
ge11nn040000_8b1ed2202073_000000000000_0000000000007

TCP SYN (p0f)

fingerprintco-occurrences
4:54+10:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:04
4:48+16:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:04
4:52+12:0:1460:mss*29,10:mss,sok,ts,nop,ws:df,id+:02
4:54+10:0:1460:mss*29,10:mss,sok,ts,nop,ws:df,id+:02
4:49+15:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:02
4:51+13:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:01
4:52+12:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:01
4:47+17:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:01

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8-1-3_1460_713
42340_2-4-8-1-3_1460_104

Country

fingerprintco-occurrences
NL · Netherlands8
US · United States7
CH · Switzerland2

Network (ASN)

fingerprintco-occurrences
AS41608 · NextGenWebs, S.L.8
AS36352 · HostPapa4
AS399804 · Hostodo3
AS53667 · FranTech Solutions2