User-Agent

Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko); compatible; OAI-AdsBot/1.0; +https://openai.com/adsbot

first seen 2026-10-16 17:34 · last seen 2026-10-27 08:28 · JSON

Bot verification

This User-Agent declares a bot or user-triggered fetcher. Each connection's IP is checked at ingest against the verification channels the operator publishes — its crawler IP ranges and, where documented, forward-confirmed reverse DNS. A claim either channel confirms is verified; one confirmed by neither — outside the ranges, inside a different operator's, or failing the DNS check — is unverified. Meta publishes its network rather than crawler ranges, so its verified claims are network-confirmed and its unconfirmed misses are unverified claims, not proven spoofs. Telegram publishes network ranges rather than fetcher ranges, and its misses are treated the same way. bot-claim anomalies →

claims	verified	unverified	unverified rate
OAI-AdsBot	0	22	100.0%

Last 7 days (1 observations)

Distinct clients per day (last 30 days, peak 1/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 / client	`OAI-AdsBot 1.0`
Device class	`bot`
Declared URL	`https://openai.com/adsbot`
Note	`inferred 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)

fingerprint	co-occurrences
`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.	22

HTTP request (JA4H)

fingerprint	co-occurrences
`ge20nr050000_bb384e635ab6_000000000000_000000000000`	7
`ge20nr050000_857b5fa3405d_000000000000_000000000000`	6
`ge20nn050000_857b5fa3405d_000000000000_000000000000`	3
`ge20nr050000_7e80a5f53adf_000000000000_000000000000`	2
`ge20nr050000_277e78b0d503_000000000000_000000000000`	2
`ge20nn050000_bb384e635ab6_000000000000_000000000000`	1
`po20nn040000_389b5b1db9ed_000000000000_000000000000`	1

HTTP/2 frames (Akamai)

fingerprint	co-occurrences
`2:0;4:4194304;5:16384;6:262144;1:65536\|1073741824\|0\|a,m,p,s`	22

TCP SYN (p0f)

fingerprint	co-occurrences
`4:58+6:0:1420:mss*46,10:mss,sok,ts,nop,ws:df,id+:0`	22

TCP SYN (JA4T)

fingerprint	co-occurrences
`65320_2-4-8-1-3_1420_10`	22

Country

fingerprint	co-occurrences
`TW` · Taiwan	18
`US` · United States	3
`BE` · Belgium	1

Network (ASN)

fingerprint	co-occurrences
`AS396982` · Google LLC	22

TLS supported groups

fingerprint	co-occurrences
`0a0a,11ec,001d,0017,0018` Match?Exact match in Thumbprint's published controlled catalog captures: chrome 155.0.8059.40, chrome 156.0.8078.73, chromium 156.0.8078.47, +8 more.The fingerprint page shows the full measured match list. More on the catalog.	22