TLS supported groups

0017,0018,0019,0100,0101,0102,0103,0104

first seen 2026-10-14 06:27 · last seen 2026-10-31 00:23 · JSON

Last 7 days (630 observations)

Distinct clients per day (last 30 days, peak 133/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 order0017 (secp256r1), 0018 (secp384r1), 0019 (secp521r1), 0100 (ffdhe2048), 0101 (ffdhe3072), 0102 (ffdhe4096), 0103 (ffdhe6144), 0104 (ffdhe8192)
Group count8
GREASE count0

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
t13d450900_d524c25c267f_9da38b6fd1bc Match?Exact match in Thumbprint's published controlled catalog captures: java-urlconnection 1.8.0_492.The fingerprint page shows the full measured match list. More on the catalog.1626
t13d330900_80cecea31fe6_9da38b6fd1bc Match?Exact match in Thumbprint's published controlled catalog captures: java-urlconnection 1.8.0_492.The fingerprint page shows the full measured match list. More on the catalog.3

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn040000_b47458f13025_000000000000_0000000000001626
ge11nn11enus_bf0046cf26b3_000000000000_0000000000003

TCP SYN (p0f)

fingerprintco-occurrences
4:116+12:0:1460:62727,7:mss,sok,ts,nop,ws:df,id+:0996
4:119+9:0:1460:62727,7:mss,sok,ts,nop,ws:df,id+:0374
4:112+16:0:1460:62727,7:mss,sok,ts,nop,ws:df,id+:0254
4:51+13:0:1410:mss*46,7:mss,sok,ts,nop,ws:df,id+:02
4:117+11:0:1460:62727,7:mss,sok,ts,nop,ws:df,id+:01
4:120+8:0:1460:62727,7:mss,sok,ts,nop,ws:df,id+:01
4:51+13:0:1410:mss*20,7:mss,sok,ts,nop,ws:df,id+:01

TCP SYN (JA4T)

fingerprintco-occurrences
62727_2-4-8-1-3_1460_71626
64860_2-4-8-1-3_1410_72
28200_2-4-8-1-3_1410_71

User-Agent

fingerprintco-occurrences
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Amazonbot/0.1; +https://developer.amazon.com/support/amazonbot) Chrome/119.0.6045.214 Safari/537.361554
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) AppleWebKit/600.2.5 (KHTML, like Gecko) Version/8.0.2 Safari/600.2.5 (Gort)72
Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.363

Country

fingerprintco-occurrences
US · United States1629

Network (ASN)

fingerprintco-occurrences
AS14618 · Amazon.com, Inc.1626
AS3356 · Level 3 Parent, LLC3