HTTP/2 frames (Akamai)

1:65536;2:0;4:131072;5:16384|12517377|7:0:0:42|m,p,a,s

first seen 2026-07-01 01:35 · last seen 2026-08-31 15:12 · JSON

Distinct clients per day (last 30 days, peak 2/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": 131072, "5": 16384}
WINDOW_UPDATE12517377
PRIORITY frames7:0:0:42
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
t13d1617h2_86a278354501_3cbfd9057e0d Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0, firefox 153.0.3, firefox 152.0.3, +10 more.The fingerprint page shows the full measured match list. More on the catalog.14
t13d1615h2_86a278354501_a54fffd0eb619
t13d1717h2_5b57614c22b0_3cbfd9057e0d Match?Exact match in Thumbprint's published controlled catalog captures: firefox 148.0.2, firefox 144.0.2, firefox 142.0.1, +6 more.The fingerprint page shows the full measured match list. More on the catalog.5
t13d1715h2_5b57614c22b0_a54fffd0eb614
t13d1517h2_8daaf6152771_3cbfd9057e0d Match?Exact match in Thumbprint's published controlled catalog captures: firefox 154.0, firefox 154.0.1, firefox 155.0.1, +1 more.The fingerprint page shows the full measured match list. More on the catalog.3
t13d1716h2_5b57614c22b0_0c27189014cf Match?Exact match in Thumbprint's published controlled catalog captures: firefox 148.0.2, firefox 144.0.2, firefox 142.0.1, +6 more.The fingerprint page shows the full measured match list. More on the catalog.1
t13d1617h2_86a278354501_3e9721a6796e1

HTTP request (JA4H)

fingerprintco-occurrences
ge20nr12enus_a72b71f519fc_000000000000_00000000000011
ge20nr11enus_3901d4197baf_000000000000_0000000000008
ge20nn11ruru_3901d4197baf_000000000000_0000000000005
ge20nr13itit_016d87568c43_000000000000_0000000000002
ge20nn12enus_a72b71f519fc_000000000000_0000000000002
ge20nr13engb_016d87568c43_000000000000_0000000000002
ge20nr11ruru_3901d4197baf_000000000000_0000000000002
ge20nr13enus_016d87568c43_000000000000_0000000000001
ge20nr12enca_a72b71f519fc_000000000000_0000000000001
ge20nn11enus_3901d4197baf_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: firefox 154.0, firefox 152.0.5, firefox 153.0.1, +3 more.The fingerprint page shows the full measured match list. More on the catalog.1

TCP SYN (p0f)

fingerprintco-occurrences
4:50+14:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:06
4:48+16:0:1452:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:df:02
4:113+15:0:1440:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:02
4:48+16:0:1412:mss*44,10:mss,sok,ts,nop,ws:df,id+:02
4:117+11:0:1334:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:02
4:36+28:0:1460:65228,7:mss,nop,ws,sok,ts:df:02
4:50+14:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:01
4:46+18:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:01
4:51+13:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:01
4:54+10:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:01

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8-1-3_1460_1010
64240_2-4-8-1-3_1460_73
64320_2-4-8-1-3_1340_102
64860_2-4-8-1-3_1380_102
64240_2-1-3-1-1-4_1440_82
65535_2-1-3-1-1-8-4-0-0_1452_62
64240_2-4-8-1-3_1412_102
64240_2-1-3-1-1-4_1334_82
65228_2-1-3-4-8_1460_72
64800_2-4-8-1-3_1440_71

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (X11; Linux x86_64; rv:152.0) Gecko/20100101 Firefox/152.07
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:153.0) Gecko/20100101 Firefox/153.04
Mozilla/5.0 (X11; Linux x86_64; rv:140.0) Gecko/20100101 Firefox/140.03
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:140.0) Gecko/20100101 Firefox/140.03
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:152.0) Gecko/20100101 Firefox/152.03
Mozilla/5.0 (X11; Linux x86_64; rv:153.0) Gecko/20100101 Firefox/153.03
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:152.0) Gecko/20100101 Firefox/152.02
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:149.0) Gecko/20100101 Firefox/149.02
Mozilla/5.0 (iPad; CPU OS 18_6 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.0 Mobile/15E148 Safari/604.12
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:151.0) Gecko/20100101 Firefox/151.01

Country

fingerprintco-occurrences
CA · Canada8
NL · Netherlands4
RU · Russia4
AU · Australia3
US · United States3
CH · Switzerland3
ID · Indonesia3
IT · Italy2
MU · Mauritius2
GB · United Kingdom1

Network (ASN)

fingerprintco-occurrences
AS5645 · TekSavvy Solutions, Inc.5
AS11878 · tzulo, inc.2
AS1267 · WIND TRE S.P.A.2
AS9657 · Melsa-i-net AS2
AS23889 · Mauritius Telecom Ltd2
AS50673 · Serverius2
AS209854 · Cyberzone S.A.2
AS41601 · NEO Print Ltd.2
AS38195 · Superloop1
AS51852 · Private Layer INC1