TCP SYN (p0f)

4:50+14:0:1412:mss*46,7:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-07-17 03:01 · last seen 2026-09-25 16:06 · JSON

Decomposed attributes

IP version4
Initial TTL50+14
Options length0
MSS1412
Window sizemss*46
Window scale7
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
t13d251000_b78ed14e2fd0_e7c2852226519
t13d131000_f57a46bbacb6_e7c285222651 Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.23.12.The fingerprint page shows the full measured match list. More on the catalog.3
t13d191000_9dc949149365_e7c2852226511
t13d2013h1_2b729b4bf6f3_e24568c0d4401

HTTP request (JA4H)

fingerprintco-occurrences
ge11nr050000_57c5e92682a8_000000000000_0000000000009
ge11nr05zhcn_f3bb7aa45ec4_000000000000_0000000000003
ge11nn030000_fe444ad14866_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.16.0, curl 7.88.1, curl 8.21.0, +1 more.The fingerprint page shows the full measured match list. More on the catalog.1
ge11nn030000_32287c24fa5b_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
64952_2-4-8-1-3_1412_714

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36 Edg/120.0.0.03
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:134.0) Gecko/20100101 Firefox/134.01
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:65.0) Gecko/20100101 Firefox/65.01
curl/8.21.01
curl/7.29.01
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:97.0) Gecko/20100101 Firefox/97.01
Mozilla/5.0 (Macintosh; Intel Mac OS X 14_4_1) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.3.1 Safari/605.1.151
Mozilla/5.0 (ZZ; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.361
Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko)Safari/537.361
Mozilla/5.0 (Ubuntu; Linux i686) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/141.0.0.0 Safari/537.361

Country

fingerprintco-occurrences
US · United States11
GB · United Kingdom3

Network (ASN)

fingerprintco-occurrences
AS135377 · UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED13
AS2914 · NTT America, Inc.1