HTTP/2 frames (Akamai)

1:65536;2:0;3:1000;4:6291456;6:262144|15663105|9:1:0:220|m,a,s,p

first seen 2026-10-03 10:15 · last seen 2026-10-03 10:15 · 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

SETTINGS{"1": 65536, "2": 0, "3": 1000, "4": 6291456, "6": 262144}
WINDOW_UPDATE15663105
PRIORITY frames9:1:0:220
Pseudo-header orderm,a,s,p

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
t13d1516h2_8daaf6152771_e5627efa2ab11

HTTP request (JA4H)

fingerprintco-occurrences
ge20nr07zhcn_f13648a20120_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:45+19:0:1424:65535,9:mss,sok,ts,nop,ws:df,id+:01

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-4-8-1-3_1424_91

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (iPhone; CPU iPhone OS 14_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.0 Mobile/15E148 Safari/604.11

Country

fingerprintco-occurrences
CN · China1

Network (ASN)

fingerprintco-occurrences
AS45090 · Shenzhen Tencent Computer Systems Company Limited1

Cross-transport links

TLS ClientHello fingerprints observed from the same client via the beacon's correlation id on the other transport (e.g. this stack over TCP ↔ that stack over QUIC).

fingerprintlinked observations
q13d0310h3_55b375c5d22e_cd85d2d889181