HTTP/2 frames (Akamai)

1:4096;2:0;4:32768;5:16384|12517377|5:0:0:42|m,p,a,s

first seen 2026-07-03 19:36 · last seen 2026-10-21 12:38 · 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": 4096, "2": 0, "4": 32768, "5": 16384}
WINDOW_UPDATE12517377
PRIORITY frames5:0:0:42
Pseudo-header orderm,p,a,s

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
t13d1616h2_86a278354501_eeeea65629603
t13d1516h2_8daaf6152771_eeeea65629602
t13d1614h2_86a278354501_3dd24b5ebec41
t13d1517h2_8daaf6152771_3cbfd9057e0d Match?Exact match in Thumbprint's published controlled catalog captures: firefox 155.0.1, firefox 154.0, firefox 156.0, +8 more.The fingerprint page shows the full measured match list. More on the catalog.1
t13d1515h2_8daaf6152771_93cf104bf5901

HTTP request (JA4H)

fingerprintco-occurrences
ge20nr13enus_016d87568c43_000000000000_0000000000001
ge20nr13enus_dee81a311bfc_000000000000_0000000000001
ge20nr13engb_132e387f43f1_000000000000_0000000000001
ge20nr14engb_23c42e3d0eec_000000000000_0000000000001
ge20nr11ruru_3901d4197baf_000000000000_0000000000001
ge20nn10zhcn_d353d425b0bb_000000000000_0000000000001
ge20nn12enus_1da1240e68f4_000000000000_0000000000001
ge20nr12ru00_a72b71f519fc_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:54+10:0:1286:65535,9:mss,sok,ts,nop,ws:df,id+:02
4:49+15:0:1460:mss*44,11:mss,sok,ts,nop,ws:df,id+:01
4:51+13:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:01
6:49+15:0:1440:mss*45,7:mss,sok,ts,nop,ws:flow:01
6:57+7:0:1440:mss*45,7:mss,sok,ts,nop,ws:flow:01
6:49+15:0:1440:32768,10:mss,nop,ws,sok,ts:flow:01
4:52+12:0:1460:mss*29,12:mss,nop,nop,sok,nop,ws:df,id+,ecn:01

TCP SYN (JA4T)

fingerprintco-occurrences
64800_2-4-8-1-3_1440_72
65535_2-4-8-1-3_1286_92
64240_2-4-8-1-3_1460_101
64240_2-4-8-1-3_1460_111
32768_2-1-3-4-8_1440_101
42340_2-1-1-4-1-3_1460_121

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (Android 10; Mobile; rv:152.0) Gecko/152.0 Firefox/152.02
Mozilla/5.0 (Android 16; Mobile; rv:154.0) Gecko/154.0 Firefox/154.02
Mozilla/5.0 (Android 10; Mobile; rv:153.0) Gecko/153.0 Firefox/153.01
Mozilla/5.0 (Android 14; Mobile; rv:152.0) Gecko/152.0 Firefox/152.01
Mozilla/5.0 (Android 10; Mobile; rv:158.0) Gecko/158.0 Firefox/158.01
Mozilla/5.0 (Android 16; Mobile; rv:158.0) Gecko/158.0 Firefox/158.01

Country

fingerprintco-occurrences
NL · Netherlands3
PL · Poland2
US · United States1
ID · Indonesia1
FI · Finland1

Network (ASN)

fingerprintco-occurrences
AS41508 · ZINET.NET.PL Sp. z.o.o.2
AS45102 · Alibaba (US) Technology Co., Ltd.1
AS215125 · Church of Cyberology1
AS50053 · VDSka hosting1
AS56971 · AS56971 Cloud1
AS43350 · NForce Entertainment B.V.1
AS203273 · NetCrafters OU1

TLS supported groups

fingerprintco-occurrences
11ec,001d,0017,0018,0019 Match?Exact match in Thumbprint's published controlled catalog captures: firefox 158.0.1, firefox 157.0, firefox 157.0.1, +5 more.The fingerprint page shows the full measured match list. More on the catalog.1
11ec,001d,0017,0018,0019,02021