HTTP/2 frames (Akamai)

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

first seen 2026-07-01 19:31 · last seen 2026-10-06 22:42 · 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, "4": 6291456, "6": 262144}
WINDOW_UPDATE15663105
PRIORITY frames0
Pseudo-header orderm,s,a,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
t13d1511h2_8daaf6152771_b9003e5c3fb38

HTTP request (JA4H)

fingerprintco-occurrences
ge20nr12enus_54b4638ab28b_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: chrome 150.0.7871.187, chrome 152.0.7977.83, chrome 151.0.7922.137, +61 more.The fingerprint page shows the full measured match list. More on the catalog.4
ge20nr13enus_0c2c1d640f3e_000000000000_0000000000003
ge20nr12enus_c0858481ddaa_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:121+7:0:1240:65535,8:mss,nop,ws,nop,nop,sok:df,id+:05
4:54+10:0:1460:mss*20,10:mss,sok,ts,nop,ws:df,id+:03

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-1-3-1-1-4_1240_85
29200_2-4-8-1-3_1460_103

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/154.0.0.0 Safari/537.36 Edg/154.0.0.05
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Safari/537.363

Country

fingerprintco-occurrences
AU · Australia5
US · United States3

Network (ASN)

fingerprintco-occurrences
AS396982 · Google LLC5
AS12129 · 123.Net, Inc.3

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
q13d0311h3_55b375c5d22e_653d80c3fe9d2