User-Agent

Mozilla/5.0 (compatible; grok-agent/1.0; +https://x.ai)

first seen 2026-08-22 14:37 · last seen 2026-08-22 15:28 · JSON

Distinct clients per day (last 30 days, peak 4/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

Browser / clientgrok-agent 1.0
Device classbot
Declared URLhttps://x.ai
Noteinferred from the self-declared string — a claim, not a measurement; compare with the wire fingerprints above

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
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.6

HTTP request (JA4H)

fingerprintco-occurrences
ge20nn04enus_39a3ba4480e8_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: urlsession 6.1.2.The fingerprint page shows the full measured match list. More on the catalog.6

HTTP/2 frames (Akamai)

fingerprintco-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 0.13.4, rust-reqwest 0.12.28, rust-reqwest 0.13.5, +3 more.The fingerprint page shows the full measured match list. More on the catalog.6

TCP SYN (p0f)

fingerprintco-occurrences
6:236+19:0:1312:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:flow:02
4:50+14:0:1360:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:id-,ecn:01
6:235+20:0:1312:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:flow:01
6:235+20:0:1312:65535,6:mss,nop,ws,sok,eol+1:flow:01
4:43+21:0:1452:65535,6:mss,nop,ws,nop,nop,ts,sok,eol+1:df,ecn:01

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-1-3-1-1-8-4-0-0_1312_63
65535_2-1-3-1-1-8-4-0-0_1360_61
65535_2-1-3-4-0-0_1312_61
65535_2-1-3-1-1-8-4-0-0_1452_61

Country

fingerprintco-occurrences
HU · Hungary6

Network (ASN)

fingerprintco-occurrences
AS213155 · Yettel Hungary Ltd.5
AS5483 · Magyar Telekom Plc.1