TCP SYN (p0f)

4:57+7:0:1460:62727,10:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-08-29 15:30 · last seen 2026-09-16 20:13 · JSON

Last 7 days (3 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

IP version4
Initial TTL57+7
Options length0
MSS1460
Window size62727
Window scale10
Options layoutmss,sok,ts,nop,ws
Quirksdf,id+
Payload class0

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
t13i1909h2_9dc949149365_97f8aa674fd93
t13d131100_f57a46bbacb6_ab7e3b40a677 Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.26.6, go-net/http 1.26.5, go-net/http 1.26.4.The fingerprint page shows the full measured match list. More on the catalog.2
t12d1515h2_8daaf6152771_98afadeeacd92

HTTP request (JA4H)

fingerprintco-occurrences
ge20nr030000_80b089f68b8e_000000000000_0000000000003
ge11cn14enus_a86c1525b786_95b235f7e849_9d3f19d3acad1
ge20nn000000_000000000000_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: rust-hyper 1.11.1, rust-hyper 1.11.0, rust-hyper 1.10.1.The fingerprint page shows the full measured match list. More on the catalog.1
ge11cn14enus_a86c1525b786_b9edfb0a0795_cad60a20c08f1
ge20cn12enus_69f95e78e872_671739d533b7_07be749239bc1

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 1.26.8, go-net/http 1.26.7, +6 more.The fingerprint page shows the full measured match list. More on the catalog.3
1:65536;3:1000;4:6291456;5:16384;6:262144|15663105|0|m,a,s,p2

TCP SYN (JA4T)

fingerprintco-occurrences
62727_2-4-8-1-3_1460_107

User-Agent

fingerprintco-occurrences
visionheight.com/scan Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) Chrome/126.0.0.0 Safari/537.363
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Safari/537.362

Country

fingerprintco-occurrences
US · United States7

Network (ASN)

fingerprintco-occurrences
AS16509 · Amazon.com, Inc.7