TCP SYN (p0f)

4:112+16:0:1360:mss*44,8:mss,nop,ws,nop,nop,sok::0

first seen 2026-09-10 01:03 · last seen 2026-09-13 08:51 · JSON

Last 7 days (10 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

IP version4
Initial TTL112+16
Options length0
MSS1360
Window sizemss*44
Window scale8
Options layoutmss,nop,ws,nop,nop,sok
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
t13d2013h1_2b729b4bf6f3_e24568c0d4408
t13d1812h1_85036bcba153_b26ce05bbdd62

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn030000_fe444ad14866_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.16.0.The fingerprint page shows the full measured match list. More on the catalog.8
ge11nn050000_b223a0ebb0b5_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: python-requests 2.34.2, python-requests 2.33.1, python-requests 2.32.3.The fingerprint page shows the full measured match list. More on the catalog.2

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-1-3-1-1-4_1360_810

User-Agent

fingerprintco-occurrences
curl/8.18.08
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/152.0.0.0 Safari/537.362

Country

fingerprintco-occurrences
JP · Japan10

Network (ASN)

fingerprintco-occurrences
AS4713 · NTT DOCOMO BUSINESS,Inc.9
AS2514 · NTT PC Communications, Inc.1