User-Agent

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

first seen 2026-06-16 19:00 · last seen 2026-11-01 04:10 · JSON

Last 7 days (190 observations)

Distinct clients per day (last 30 days, peak 13/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 / clientOAI-SearchBot 1.4
Operating systemmacOS 10.15.7
Device classbot
Declared URLhttps://openai.com/searchbot
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.1307
t13d1516h2_8daaf6152771_d8a2da3f94cd Match?Exact match in Thumbprint's published controlled catalog captures: chromium 149.0.7827.102, chrome 149.0.7827.102, chrome 149.0.7827.156, +25 more.The fingerprint page shows the full measured match list. More on the catalog.6

HTTP request (JA4H)

fingerprintco-occurrences
ge20nr050000_a36a3d5685e0_000000000000_000000000000696
ge20nn050000_a36a3d5685e0_000000000000_000000000000603
ge20nr060000_c57eabf9cebf_000000000000_0000000000007
ge20nn050000_857b5fa3405d_000000000000_0000000000002
ge20nn060000_c57eabf9cebf_000000000000_0000000000001
ge20nn050000_7e80a5f53adf_000000000000_0000000000001
po20nn040000_389b5b1db9ed_000000000000_0000000000001
ge20nr050000_857b5fa3405d_000000000000_0000000000001
ge20nr050000_bb384e635ab6_000000000000_0000000000001

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 0.12.28, 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.1307
2:0;4:4194304;5:16384;6:262144;1:65536|1073741824|0|a,m,p,s6

TCP SYN (p0f)

fingerprintco-occurrences
4:45+19:0:1390:65535,12:mss,sok,ts,nop,ws:df,id+:0711
4:44+20:0:1390:65535,12:mss,sok,ts,nop,ws:df,id+:0583
4:43+21:0:1390:65535,12:mss,sok,ts,nop,ws:df,id+:010
4:58+6:0:1420:mss*46,10:mss,sok,ts,nop,ws:df,id+:06
4:42+22:0:1390:65535,12:mss,sok,ts,nop,ws:df,id+:03

TCP SYN (JA4T)

fingerprintco-occurrences
65535_2-4-8-1-3_1390_121299
65320_2-4-8-1-3_1420_106

Country

fingerprintco-occurrences
US · United States1307
SG · Singapore6

Network (ASN)

fingerprintco-occurrences
AS8075 · Microsoft Corporation1307
AS396982 · Google LLC6

TLS supported groups

fingerprintco-occurrences
001d,0017,0018 Match?Exact match in Thumbprint's published controlled catalog captures: rust-reqwest 0.12.28, rust-reqwest 0.11.27, winhttp 10.0.20348.1, +2 more.The fingerprint page shows the full measured match list. More on the catalog.326