TCP SYN (p0f)

4:52+12:0:1420:mss*46,10:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-06-13 10:41 · last seen 2026-09-06 06:10 · JSON

Distinct clients per day (last 30 days, peak 1/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
MSS1420
Window sizemss*46
Window scale10
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
t13d190900_9dc949149365_97f8aa674fd916
t13d1011h1_61a7ad8aa9b6_3a8073edd8ef1

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn040000_209bf58f7e8c_000000000000_00000000000016
ge11nr030000_341eb0d8946c_000000000000_0000000000001

TCP SYN (JA4T)

fingerprintco-occurrences
65320_2-4-8-1-3_1420_101

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Linux; Android 4.4.2; SM-T230NU Build/KOT49H) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.81 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.361
Mozilla/5.0 (compatible; Googlebot/2.1; http://www.google.com/bot.html)1
Mozilla/5.0 (Linux; Android 6.0; HTC One M9 Build/MRA58K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.98 Mobile Safari/537.361
Mozilla/5.0 (Linux; Android 9; Redmi Note 4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/76.0.3809.80 Mobile Safari/537.361
Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.90 Safari/537.361
Mozilla/5.0 (Linux; Android 9; Redmi Note 7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/76.0.3809.111 Mobile Safari/537.361
SonyEricssonT68/R201A1
MOT-L7v/08.B7.5DR MIB/2.2.1 Profile/MIDP-2.0 Configuration/CLDC-1.1 UP.Link/6.3.0.0.01
Mozilla/5.0 (Macintosh; U; PPC Mac OS X; fr-fr) AppleWebKit/312.5 (KHTML, like Gecko) Safari/312.31

Country

fingerprintco-occurrences
IN · India15
ID · Indonesia1
SG · Singapore1

Network (ASN)

fingerprintco-occurrences
AS396982 · Google LLC17