TLS supported groups

001d,0017,0018

first seen 2026-10-14 05:52 · last seen 2026-10-31 00:57 · JSON

Last 7 days (19357 observations)

Distinct clients per day (last 30 days, peak 387/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

Groups in wire order	`001d (x25519), 0017 (secp256r1), 0018 (secp384r1)`
Group count	`3`
GREASE count	`0`

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)

fingerprint	co-occurrences
`t13d1011h2_61a7ad8aa9b6_f9531d972513` Match?Exact match in Thumbprint's published controlled catalog captures: rust-reqwest 0.13.4, rust-hyper 1.11.0, rust-hyper 1.11.1, +1 more.The fingerprint page shows the full measured match list. More on the catalog.	17932
`t13d1011h2_61a7ad8aa9b6_3fcd1a44f3e3` Match?Exact match in Thumbprint's published controlled catalog captures: rust-reqwest 0.12.28.The fingerprint page shows the full measured match list. More on the catalog.	10432
`t13d201100_2b729b4bf6f3_36bf25f296df`	72
`t12d290700_fc2078a0b8c0_8c06664c3ac5`	50
`t13d1011h1_61a7ad8aa9b6_3a8073edd8ef`	45
`t13d1011h1_61a7ad8aa9b6_3fcd1a44f3e3`	45
`t12d210700_76e208dd3e22_f28add8e7af0`	43
`t13d221000_231e334592e8_29829a46703f`	40
`t13d1711h2_5b57614c22b0_5894756fee65`	30
`t13d101000_61a7ad8aa9b6_3ea2f44fd1af`	26

HTTP request (JA4H)

fingerprint	co-occurrences
`ge20nn09enus_a1a0096bef8e_000000000000_000000000000`	9955
`ge20nn050000_a36a3d5685e0_000000000000_000000000000`	204
`ge20nr050000_a36a3d5685e0_000000000000_000000000000`	125
`ge20nn09enus_11021b20a09b_000000000000_000000000000`	79
`ge11nn16enus_a27292610b04_000000000000_000000000000`	55
`ge20nn030000_80b089f68b8e_000000000000_000000000000`	52
`ge20nn09enus_14bb3be9acf4_000000000000_000000000000`	45
`ge20nn09enus_cf0067a15607_000000000000_000000000000`	42
`ge20nn09enus_bd0eefb4cd96_000000000000_000000000000`	41
`ge20nn09enus_3cfb631e00fc_000000000000_000000000000`	41

HTTP/2 frames (Akamai)

fingerprint	co-occurrences
`2:0;4:2097152;5:16384;6:16384\|5177345\|0\|m,s,a,p` Match?Exact match in Thumbprint's published controlled catalog captures: rust-reqwest 0.12.28, rust-reqwest 0.13.5, rust-reqwest 0.13.4, +4 more.The fingerprint page shows the full measured match list. More on the catalog.	28360
`3:100;4:65536;2:0\|1048510465\|0\|m,s,a,p` Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.13.0, curl 8.18.0, curl 8.21.0, +8 more.The fingerprint page shows the full measured match list. More on the catalog.	30
`1:65536;2:0;4:6291456;6:262144\|15663105\|1:0:0:256\|m,a,s,p`	9
`1:65536;2:0;4:6291456;6:262144\|15663105\|1:1:0:220\|m,a,s,p` Match?Exact match in Thumbprint's published controlled catalog captures: chrome 150.0.7871.187, chromium 149.0.7827.102, chrome 152.0.7977.83, +81 more.The fingerprint page shows the full measured match list. More on the catalog.	4
`2:0;4:65535;5:16384;6:65536\|00\|0\|m,s,a,p`	4
`1:65536;2:0;4:6291456;6:262144\|15663105\|1:1:0:256\|m,a,s,p` Match?Exact match in Thumbprint's published controlled catalog captures: chromium 131.0.6778.33, chromium 151.0.7922.34, chrome 151.0.7922.137, +57 more.The fingerprint page shows the full measured match list. More on the catalog.	3
`2:0;4:65535\|67043329\|0\|m,s,a,p` Match?Exact match in Thumbprint's published controlled catalog captures: powershell 7.6.6, powershell 7.6.8.The fingerprint page shows the full measured match list. More on the catalog.	3
`4:16777216\|16711681\|0\|m,p,a,s`	2
`2:0;4:4194304;5:16384;6:65856\|1073741824\|0\|a,m,p,s`	2
`2:0\|00\|0\|p,m,a,s`	2

TCP SYN (p0f)

fingerprint	co-occurrences
`4:55+9:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	14303
`4:57+7:0:1460:35424,7:mss,sok,ts,nop,ws:df,id+:0`	10004
`4:56+8:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0`	3592
`4:45+19:0:1390:65535,12:mss,sok,ts,nop,ws:df,id+:0`	199
`4:44+20:0:1390:65535,12:mss,sok,ts,nop,ws:df,id+:0`	128
`4:119+9:0:1460:62727,7:mss,sok,ts,nop,ws:df,id+:0`	42
`4:110+18:0:1460:mss*44,8:mss,nop,ws,nop,nop,sok:df,id+,ecn:0`	40
`4:50+14:0:1460:65535,10:mss,sok,ts,nop,ws:df,id+:0`	34
`4:57+7:0:1420:mss*30,7:mss,sok,ts,nop,ws:df,id+:0`	30
`4:56+8:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:0`	24

TCP SYN (JA4T)

fingerprint	co-occurrences
`64240_2-4-8-1-3_1460_7`	17943
`35424_2-4-8-1-3_1460_7`	10034
`65535_2-4-8-1-3_1390_12`	329
`64240_2-1-3-1-1-4_1460_8`	77
`65535_2-1-3-1-1-4_1440_8`	77
`62727_2-4-8-1-3_1460_7`	52
`65535_2-4-8-1-3_1460_10`	45
`65170_2-4-8-1-3_1330_10`	39
`64240_2-1-3-1-1-4_1440_8`	35
`42600_2-4-8-1-3_1420_7`	32

User-Agent

fingerprint	co-occurrences
`Mozilla/5.0 (compatible; ExaSearchBot/1.0; +https://crawler.exa.ai/)`	17846
`Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Reflectionbot/1.0; +https://reflection.ai/bot) Chrome/151.0.0.0 Safari/537.36`	10034
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36; compatible; OAI-SearchBot/1.4; +https://openai.com/searchbot`	263
`Mozilla/5.0 (compatible; ExaUser/1.0; +https://crawler.exa.ai/exauser)`	84
`Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36`	74
`Mozilla/5.0 (compatible; MJ12bot/v1.4.8; http://mj12bot.com/)`	52
`Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)`	52
`Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36; compatible; OAI-SearchBot/1.4; robots.txt; +https://openai.com/searchbot`	49
`Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko); compatible; SEOJuice-SearchBot/1.0; +https://seojuice.io/bot`	42
`Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.45 Safari/537.36`	34

Country

fingerprint	co-occurrences
`US` · United States	28519
`FR` · France	84
`DE` · Germany	57
`AU` · Australia	33
`KR` · South Korea	27
`NL` · Netherlands	21
`IN` · India	15
`RU` · Russia	13
`PL` · Poland	10
`FI` · Finland	9

Network (ASN)

fingerprint	co-occurrences
`AS30058` · FDCservers.net	17891
`AS396982` · Google LLC	10068
`AS8075` · Microsoft Corporation	433
`AS16276` · OVH SAS	73
`AS212238` · Datacamp Limited	58
`AS16509` · Amazon.com, Inc.	53
`AS202412` · Omegatech LTD	33
`AS55286` · B2 Net Solutions Inc.	23
`AS24940` · Hetzner Online GmbH	13
`AS46516` · HostRoyale LLC	11

fingerprint	co-occurrences
`2:0;4:2097152;5:16384;6:16384\|5177345\|0\|m,s,a,p` Match?Exact match in Thumbprint's published controlled catalog captures: rust-reqwest 0.12.28, rust-reqwest 0.13.5, rust-reqwest 0.13.4, +4 more.The fingerprint page shows the full measured match list. More on the catalog.	28360
`3:100;4:65536;2:0\|1048510465\|0\|m,s,a,p` Match?Exact match in Thumbprint's published controlled catalog captures: curl 8.13.0, curl 8.18.0, curl 8.21.0, +8 more.The fingerprint page shows the full measured match list. More on the catalog.	30
`1:65536;2:0;4:6291456;6:262144\|15663105\|1:0:0:256\|m,a,s,p`	9
`1:65536;2:0;4:6291456;6:262144\|15663105\|1:1:0:220\|m,a,s,p` Match?Exact match in Thumbprint's published controlled catalog captures: chrome 150.0.7871.187, chromium 149.0.7827.102, chrome 152.0.7977.83, +81 more.The fingerprint page shows the full measured match list. More on the catalog.	4
`2:0;4:65535;5:16384;6:65536\|00\|0\|m,s,a,p`	4
`1:65536;2:0;4:6291456;6:262144\|15663105\|1:1:0:256\|m,a,s,p` Match?Exact match in Thumbprint's published controlled catalog captures: chromium 131.0.6778.33, chromium 151.0.7922.34, chrome 151.0.7922.137, +57 more.The fingerprint page shows the full measured match list. More on the catalog.	3
`2:0;4:65535\|67043329\|0\|m,s,a,p` Match?Exact match in Thumbprint's published controlled catalog captures: powershell 7.6.6, powershell 7.6.8.The fingerprint page shows the full measured match list. More on the catalog.	3
`4:16777216\|16711681\|0\|m,p,a,s`	2
`2:0;4:4194304;5:16384;6:65856\|1073741824\|0\|a,m,p,s`	2
`2:0\|00\|0\|p,m,a,s`	2