HTTP/2 frames (Akamai)

2:0;4:4194304;3:100|10485760|1:0:0:255|m,s,p,a

first seen 2026-06-19 08:14 · last seen 2026-08-18 19:11 · JSON

Distinct clients per day (last 30 days, peak 4/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{"2": 0, "3": 100, "4": 4194304}
WINDOW_UPDATE10485760
PRIORITY frames1:0:0:255
Pseudo-header orderm,s,p,a

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_14788d8d241b10

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn07enus_39faa4ed05e7_000000000000_0000000000009
ge20nr08zhcn_2f332481d94c_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
6:47+17:0:1440:mss*45,7:mss,sok,ts,nop,ws:flow:03
6:55+9:0:1440:mss*45,7:mss,sok,ts,nop,ws:flow:02
4:53+11:0:8902:mss*7,12:mss,sok,ts,nop,ws:df,id+,ecn:02
4:56+8:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:01
4:38+26:0:1440:mss*44,10:mss,sok,ts,nop,ws:df,id+:01
4:50+14:0:1460:mss*29,11:mss,nop,nop,sok,nop,ws:df,id+:01

TCP SYN (JA4T)

fingerprintco-occurrences
64800_2-4-8-1-3_1440_75
62314_2-4-8-1-3_8902_122
64240_2-4-8-1-3_1460_71
42340_2-1-1-4-1-3_1460_111

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.0 Safari/605.1.156
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.3.1 Safari/605.1.151
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.3.9 Safari/605.1.151
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.6.4 Safari/605.1.151
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.8.4 Safari/605.1.151

Country

fingerprintco-occurrences
SE · Sweden4
FI · Finland3
DE · Germany1
NL · Netherlands1
CN · China1

Network (ASN)

fingerprintco-occurrences
AS24940 · Hetzner Online GmbH3
AS214503 · QuxLabs AB2
AS214379 · South Park Networks LLC2
AS60729 · Stiftung Erneuerbare Freiheit1
AS4134 · CHINANET BACKBONE1
AS40662 · Layer7 Technologies Inc1