TCP SYN (p0f)

4:49+15:0:1400:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:df:0

first seen 2026-08-07 07:46 · last seen 2026-09-14 17:19 · JSON

Last 7 days (1 observations)

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 TTL49+15
Options length0
MSS1400
Window size65535
Window scale6
Options layoutmss,nop,ws,nop,nop,ts,sok,eol+1
Quirksdf
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
t13d2014h2_a09f3c656075_e42f34c56612 Match?Exact match in Thumbprint's published controlled catalog captures: safari 26.5.2, safari 26.5, urlsession 6.1.2, +1 more.The fingerprint page shows the full measured match list. More on the catalog.2

HTTP request (JA4H)

fingerprintco-occurrences
ge20nr07zhcn_0195bc40dc9f_000000000000_0000000000001
ge20nr07ru00_39faa4ed05e7_000000000000_0000000000001

HTTP/2 frames (Akamai)

fingerprintco-occurrences
2:0;4:2097152;3:100|10485760|1:0:0:255|m,s,p,a2

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-1-3-1-1-8-4-0-0_1400_62

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (iPhone; CPU iPhone OS 18_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 MicroMessenger/8.0.75(0x18004b57) NetType/WIFI Language/zh_CN1
Mozilla/5.0 (iPhone; CPU iPhone OS 18_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) FxiOS/155.1 Mobile/15E148 Safari/604.11

Country

fingerprintco-occurrences
RU · Russia1
CN · China1

Network (ASN)

fingerprintco-occurrences
AS4134 · CHINANET BACKBONE1
AS12958 · T2 Mobile LLC1