User-Agent

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

first seen 2026-06-19 19:15 · last seen 2026-10-29 14:29 · JSON

Last 7 days (1 observations)

Distinct clients per day (last 30 days, peak 8/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 / clientSkypeUriPreview Preview 0.5
Operating systemWindows 6.1
Device classdesktop
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
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.20
t12d080700_0df93f53a2f9_2dae41c691ec4

HTTP request (JA4H)

fingerprintco-occurrences
he11nn07en00_806ad52065dd_000000000000_00000000000010
ge11nn07en00_806ad52065dd_000000000000_0000000000008
ge11nn06en00_827c3ac6a18a_000000000000_0000000000003
ge11nn07de00_806ad52065dd_000000000000_0000000000002
ge11nn05en00_e9a7986301bf_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:104+24:0:1340:mtu*47,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:05
4:114+14:0:1340:mtu*47,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:03
4:108+20:0:1340:mtu*47,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:03
4:109+19:0:1440:65535,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:02
4:103+25:0:1340:mtu*47,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:02
4:106+22:0:1340:mtu*47,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:02
4:110+18:0:1440:65535,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:01
4:108+20:0:1440:65535,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:01
4:112+16:0:1340:mtu*47,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:01
4:109+19:0:1340:mtu*47,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:01

TCP SYN (JA4T)

fingerprintco-occurrences
64860_2-1-3-1-1-4_1340_818
65535_2-1-3-1-1-4_1440_85

Country

fingerprintco-occurrences
US · United States14
IE · Ireland5
FR · France4
JP · Japan1

Network (ASN)

fingerprintco-occurrences
AS8075 · Microsoft Corporation24

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