HTTP/2 frames (Akamai)

1:65536;2:0;4:131072;5:16384|12517377|13:0:0:42|m,p,a,s

first seen 2026-06-30 02:50 · last seen 2026-10-31 02:35 · JSON

Last 7 days (8 observations)

Distinct clients per day (last 30 days, peak 5/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 frames13:0:0:42
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
t13d1715h2_5b57614c22b0_a54fffd0eb6116
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.15
t13d1517h2_8daaf6152771_3cbfd9057e0d Match?Exact match in Thumbprint's published controlled catalog captures: firefox 155.0.1, firefox 154.0, firefox 156.0, +7 more.The fingerprint page shows the full measured match list. More on the catalog.10
t13d1615h2_86a278354501_a54fffd0eb617
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.3
t13d1616h2_86a278354501_0c27189014cf Match?Exact match in Thumbprint's published controlled catalog captures: firefox 153.0, firefox 153.0.3, firefox 152.0.6, +10 more.The fingerprint page shows the full measured match list. More on the catalog.2
t13d1714h2_5b57614c22b0_53a6d0ab1c422
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.2
t13d1517h2_8daaf6152771_6f4c3a25c8012
t13d0916h2_f91f431d341e_0c27189014cf1

HTTP request (JA4H)

fingerprintco-occurrences
ge20nr12enus_a72b71f519fc_000000000000_00000000000019
ge20nr11enus_3901d4197baf_000000000000_00000000000012
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.7
ge20nn12enus_a72b71f519fc_000000000000_0000000000005
ge20nr13enus_016d87568c43_000000000000_0000000000003
ge20nr13itit_016d87568c43_000000000000_0000000000002
ge20nr13enus_52a9a314672a_000000000000_0000000000002
ge20nr11ruru_3901d4197baf_000000000000_0000000000002
ge20nn16enus_c03e27744605_000000000000_0000000000002
ge20nr13enus_dee81a311bfc_000000000000_0000000000001

TCP SYN (p0f)

fingerprintco-occurrences
4:115+13:0:1460:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:05
4:50+14:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:03
4:113+15:0:1440:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+:03
4:54+10:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:02
4:47+17:0:1440:mss*44,10:mss,sok,ts,nop,ws:df,id+:02
6:48+16:0:1440:mss*45,7:mss,sok,ts,nop,ws:flow:02
6:44+20:0:1440:mss*45,7:mss,sok,ts,nop,ws:flow:02
4:48+16:0:1452:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:df:02
4:48+16:0:1220:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:df,ecn:02
4:56+8:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:01

TCP SYN (JA4T)

fingerprintco-occurrences
64240_2-4-8-1-3_1460_108
64800_2-4-8-1-3_1440_77
64240_2-1-3-1-1-4_1460_86
64240_2-4-8-1-3_1460_74
64860_2-4-8-1-3_1380_103
64240_2-1-3-1-1-4_1440_83
65535_2-1-3-1-1-8-4-0-0_1452_63
32768_2-1-3-4-8_1440_102
64240_2-4-8-1-3_1440_102
65535_2-1-3-1-1-4_1340_82

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (X11; Linux x86_64; rv:140.0) Gecko/20100101 Firefox/140.013
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:153.0) Gecko/20100101 Firefox/153.07
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:140.0) Gecko/20100101 Firefox/140.06
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:152.0) Gecko/20100101 Firefox/152.04
Mozilla/5.0 (X11; Linux x86_64; rv:152.0) Gecko/20100101 Firefox/152.04
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 (Macintosh; Intel Mac OS X 10.15; rv:140.0) Gecko/20100101 Firefox/140.02
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.0.0 Safari/537.362
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:153.0) Gecko/20100101 Firefox/153.02

Country

fingerprintco-occurrences
US · United States6
NL · Netherlands6
CA · Canada5
HU · Hungary5
NO · Norway4
SE · Sweden4
ID · Indonesia4
DE · Germany3
CH · Switzerland3
AU · Australia2

Network (ASN)

fingerprintco-occurrences
AS5483 · Magyar Telekom Plc.5
AS9657 · Melsa-i-net AS3
AS212238 · Datacamp Limited2
AS50304 · Blix Solutions AS2
AS16276 · OVH SAS2
AS701 · Verizon Business2
AS53667 · FranTech Solutions2
AS215125 · Church of Cyberology2
AS1267 · WIND TRE S.P.A.2
AS209854 · Cyberzone S.A.2

TLS supported groups

fingerprintco-occurrences
11ec,001d,0017,0018,0019,0100,01018
11ec,001d,0017,0018,0019,02021