TCP SYN (p0f)

4:52+12:0:1460:65535,13:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-06-11 13:00 · last seen 2026-09-15 07:56 · JSON

Last 7 days (1 observations)

Distinct clients per day (last 30 days, peak 2/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 TTL52+12
Options length0
MSS1460
Window size65535
Window scale13
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
t13d1312h2_a44d0ee8b3cc_e381dae6da6b21
t13d1412h2_e33ad33b3d25_6b314db333b62

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn090000_6c95df8859bf_000000000000_00000000000010
ge20nn18enus_f19a7ce03b58_000000000000_0000000000004
ge20nn19enus_6d96c1a2ad8a_000000000000_0000000000003
ge20nn140000_08481e7494b3_000000000000_0000000000002
ge20nr19enus_6d96c1a2ad8a_000000000000_0000000000002
ge20nn100000_b100245d6658_000000000000_0000000000001
ge20nn070000_1c05be67a921_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
2:0;3:1;4:8388608;5:65536|8323073|0|m,s,a,p23

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-4-8-1-3_1460_1320

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (compatible; HNBot/1.0)8
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.365
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.362
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36; compatible; OAI-SearchBot/1.0; +https://openai.com/searchbot2
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.362
Mozilla/5.0 (iPhone; CPU iPhone OS 17_0 like Mac OS X) AppleWebKit/605.1.15 Version/17.0 Mobile Safari/604.11
TechFeed/1.01
Mozilla/5.0 (compatible; bot/1.0)1
Wget/1.21.3 (linux-gnu)1

Country

fingerprintco-occurrences
US · United States19
DE · Germany1
SE · Sweden1
PL · Poland1
DK · Denmark1

Network (ASN)

fingerprintco-occurrences
AS13335 · Cloudflare, Inc.23