User-Agent

Mozilla/5.0 (compatible; research-scan/1.0)

first seen 2026-07-30 02:16 · last seen 2026-10-27 04:11 · JSON

Last 7 days (4 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 / clientresearch-scan 1.0
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
t13d1314h1_f57a46bbacb6_fb48f8b98a294
t13i1909h2_9dc949149365_97f8aa674fd92
t13i1313h1_f57a46bbacb6_fb48f8b98a291

HTTP request (JA4H)

fingerprintco-occurrences
ge11nr050000_a1c329e38462_000000000000_0000000000003
ge20nr030000_80b089f68b8e_000000000000_0000000000002
ge11nn050000_a1c329e38462_000000000000_0000000000002

HTTP/2 frames (Akamai)

fingerprintco-occurrences
2:0;4:4194304;5:16384;6:10485760|1073741824|0|a,m,p,s Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.26.6, go-net/http 1.26.10, go-net/http 1.26.9, +8 more.The fingerprint page shows the full measured match list. More on the catalog.2

TCP SYN (p0f)

fingerprintco-occurrences
4:57+7:0:1460:mss*44,13:mss,sok,ts,nop,ws:df,id+:02
4:53+11:0:1460:mss*22,7:mss,sok,ts,nop,ws:df,id+:01
4:50+14:0:1460:mss*22,7:mss,sok,ts,nop,ws:df,id+:01
4:54+10:0:1460:mss*44,13:mss,sok,ts,nop,ws:df,id+:01
4:56+8:0:1460:mss*44,13:mss,sok,ts,nop,ws:df,id+:01
4:53+11:0:1460:mss*44,13:mss,sok,ts,nop,ws:df,id+:01

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8-1-3_1460_135
32120_2-4-8-1-3_1460_72

Country

fingerprintco-occurrences
US · United States4
FR · France2
NL · Netherlands1

Network (ASN)

fingerprintco-occurrences
AS31898 · Oracle Corporation4
AS51167 · Contabo GmbH2
AS51396 · Pfcloud UG1

TLS supported groups

fingerprintco-occurrences
11ec,001d,0017,0018,0019 Match?Exact match in Thumbprint's published controlled catalog captures: firefox 157.0.1, firefox-esr 153.5.1esr, firefox 158.0.1, +3 more.The fingerprint page shows the full measured match list. More on the catalog.4