HTTP/2 frames (Akamai)

1:4096;2:0;4:65535;5:16384;3:100;6:65536|16777216|0|m,a,s,p

first seen 2026-06-12 21:38 · last seen 2026-09-14 08:13 · JSON

Last 7 days (4 observations)

Distinct clients per day (last 30 days, peak 3/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, "3": 100, "4": 65535, "5": 16384, "6": 65536}
WINDOW_UPDATE16777216
PRIORITY frames0
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
t13d1812h1_85036bcba153_d41ae481755e36
t13d3013h1_1d37bd780c83_ecd0401ec68b5
t13d1713h1_ab0a1bf427ad_ecd0401ec68b Match?Exact match in Thumbprint's published controlled catalog captures: python-httpx 0.28.1.The fingerprint page shows the full measured match list. More on the catalog.3
t13d1712h1_ab0a1bf427ad_8e6e362c5eac3
t13i1712h1_ab0a1bf427ad_ecd0401ec68b2
t13i1811h1_85036bcba153_d41ae481755e2
t13d4312h1_c7886603b240_24695f2957a71
t12d3806h1_10ed599f3404_67a080e8974e1

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn06*000_b74359a06b81_000000000000_00000000000014
po20nn07*000_8db2b212706a_000000000000_00000000000014
ge20nn060000_9606e9a08f5b_000000000000_0000000000005
ge20nn04enus_ded3c6d8f0eb_000000000000_0000000000004
ge20nn040000_c3abebcf3d28_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: python-httpx 0.28.1.The fingerprint page shows the full measured match list. More on the catalog.3
ge20nn08engb_c4bf040e0aa1_000000000000_0000000000003
ge20nn07*000_11cdd62b56ea_000000000000_0000000000002
po20nn08*000_b01858152300_000000000000_0000000000002
ge20nn06enus_42822632cf7e_000000000000_0000000000002
he20nn030000_80b089f68b8e_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
6:52+12:0:1440:mss*45,7:mss,sok,ts,nop,ws:flow:014
6:46+18:0:1440:mss*45,7:mss,sok,ts,nop,ws:flow:04
6:47+17:0:1440:mss*45,7:mss,sok,ts,nop,ws:flow:04
6:48+16:0:1440:mss*45,7:mss,sok,ts,nop,ws:flow:04
6:51+13:0:1440:62587,7:mss,sok,ts,nop,ws:flow:04
6:41+23:0:1440:mss*30,11:mss,sok,ts,nop,ws:flow:04
4:43+21:0:1460:mss*44,10:mss,sok,ts,nop,ws::03
4:51+13:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:02
4:50+14:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:02
6:53+11:0:1440:mss*45,7:mss,sok,ts,nop,ws:flow:02

TCP SYN (JA4T)

fingerprintco-occurrences
64800_2-4-8-1-3_1440_729
62587_2-4-8-1-3_1440_74
43200_2-4-8-1-3_1440_114
64240_2-4-8-1-3_1460_103
64800_2-4-8-1-3_1440_102
62727_2-4-8-1-3_1460_71
62727_2-4-8-1-3_1460_101
65535_2-1-3-1-1-8-4-0-0_1200_61

User-Agent

fingerprintco-occurrences
python-httpx/0.28.136
Pandalytics/2.0 (+https://domainsbot.com/network-crawler-pandalytics-kdc68dhsbd/)5
uk-nhs-data/0.0 (internal fraud-research)3
DataFoundationResearch/0.1 (+contact@example.com)2
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.361
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:133.0) Gecko/20100101 Firefox/133.01
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.361
Mozilla/5.0 (Windows NT 11.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.361
Mozilla/5.0 (Windows NT 10.0; Win64; x64; Xbox; Xbox One) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36 Edge/44.18363.81311

Country

fingerprintco-occurrences
US · United States22
NL · Netherlands12
DE · Germany6
IE · Ireland5
GB · United Kingdom4
RU · Russia3
SG · Singapore1

Network (ASN)

fingerprintco-occurrences
AS21859 · Zenlayer Inc20
AS211680 · NSEC - Sistemas Informaticos, S.A.12
AS16509 · Amazon.com, Inc.7
AS197540 · netcup GmbH4
AS8468 · ENTANET International Limited3
AS24940 · Hetzner Online GmbH2
AS50340 · JSC Selectel2
AS14061 · DigitalOcean, LLC1
AS174 · Cogent Communications, LLC1
AS49505 · JSC Selectel1