TCP SYN (p0f)

4:105+23:0:1340:mtu*47,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:0

first seen 2026-10-29 14:29 · last seen 2026-10-29 14:29 · JSON

Last 7 days (1 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 TTL105+23
Options length0
MSS1340
Window sizemtu*47
Window scale8
Options layoutmss,nop,ws,nop,nop,sok
Quirksdf,id+,ecn
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
t13d101100_01be160bb49b_36bf25f296df Match?Exact match in Thumbprint's published controlled catalog captures: powershell 7.6.6, powershell 7.6.5, powershell 5.1.26100.33296, +8 more.The fingerprint page shows the full measured match list. More on the catalog.1

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn07en00_806ad52065dd_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
64860_2-1-3-1-1-4_1340_81

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 6.1; WOW64) SkypeUriPreview Preview/0.5 skype-url-preview@microsoft.com1

Country

fingerprintco-occurrences
US · United States1

Network (ASN)

fingerprintco-occurrences
AS8075 · Microsoft Corporation1

TLS supported groups

fingerprintco-occurrences
0018,0017 Match?Exact match in Thumbprint's published controlled catalog captures: powershell 7.6.7, powershell 5.1.26100.33648, curl 8.21.0.The fingerprint page shows the full measured match list. More on the catalog.1