User-Agent

impeccable-corpus/0.1 (research crawler)

first seen 2026-10-06 18:00 · last seen 2026-10-25 10:05 · JSON

Last 7 days (2 observations)

Distinct clients per day (last 30 days, peak 2/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 / clientimpeccable-corpus 0.1
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
t13d1715h1_5b57614c22b0_e8ed158c4d854

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn050000_eef1501076a8_000000000000_0000000000002
ge11nn050000_5ddb03fb9e99_000000000000_0000000000002

TCP SYN (p0f)

fingerprintco-occurrences
4:45+19:0:1460:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:df,ecn:01
4:55+9:0:1380:65535,13:mss,sok,ts,nop,ws:df,id+:01
4:43+21:0:1460:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:df,ecn:01
6:57+7:0:1360:65535,13:mss,sok,ts,nop,ws:flow:01

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-1-3-1-1-8-4-0-0_1460_62
65535_2-4-8-1-3_1360_131
65535_2-4-8-1-3_1380_131

Country

fingerprintco-occurrences
US · United States4

Network (ASN)

fingerprintco-occurrences
AS13335 · Cloudflare, Inc.2
AS46375 · Sonic Telecom LLC2

TLS supported groups

fingerprintco-occurrences
001d,0017,0018 Match?Exact match in Thumbprint's published controlled catalog captures: rust-reqwest 0.12.28, rust-reqwest 0.11.27, powershell 7.6.8, +1 more.The fingerprint page shows the full measured match list. More on the catalog.2