TCP SYN (p0f)

4:110+18:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-06-17 02:46 · last seen 2026-07-31 22:56 · JSON

Decomposed attributes

IP version4
Initial TTL110+18
Options length0
MSS1460
Window sizemss*44
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
t13d5311h1_ed6c8d7875f9_518fb456ca592
t13d5212h1_b262b3658495_8e6e362c5eac Match?Exact match in Thumbprint's published controlled catalog captures: node-fetch 24.19.0, node-fetch 22.23.1, node-fetch 24.21.0, +6 more.The fingerprint page shows the full measured match list. More on the catalog.1
t13d1814h1_5103eae14fdb_678a800b22211

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn070000_131b6413da1e_000000000000_0000000000001
ge11nn06*000_6c48cf242120_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: node-fetch 22.22.3.The fingerprint page shows the full measured match list. More on the catalog.1
he11nn07*000_2f91038604b7_000000000000_0000000000001
ge11nn040000_e1d2031bdfea_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8-1-3_1460_72

User-Agent

fingerprintco-occurrences
node1
git/2.39.21
Mozilla/5.0 (compatible; SkyWatch/1.0; +https://github.com/skywatch-bsky/skywatch-automod)1
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 Chrome/120 Safari/537.361

Country

fingerprintco-occurrences
IE · Ireland2
DE · Germany1
GB · United Kingdom1

Network (ASN)

fingerprintco-occurrences
AS16509 · Amazon.com, Inc.4