User-Agent
undici
first seen 2026-07-01 21:47 · last seen 2026-09-01 12:28 · JSON
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 | undici |
|---|---|
| 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 |
|---|---|
t13d1512h1_8daaf6152771_8e6e362c5eac | 2 |
t13d5212h1_b262b3658495_8e6e362c5eac Match?Exact match in Thumbprint's published controlled catalog captures: node-fetch 24.19.0, node-fetch 22.23.1, node-fetch 24.21.0, +6 more.The fingerprint page shows the full measured match list. More on the catalog. | 2 |
HTTP request (JA4H)
| fingerprint | co-occurrences |
|---|---|
ge11nn07*000_4ae0f4a72b53_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: node-fetch 24.19.0, node-fetch 24.21.0, node-fetch 24.20.0, +5 more.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
ge20nn05*000_ba03334ad3ea_000000000000_000000000000 Match?Exact match in Thumbprint's published controlled catalog captures: node-fetch 26.4.0.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
he11nn07*000_4ae0f4a72b53_000000000000_000000000000 | 1 |
ge11cn07enus_5891d4274040_000000000000_000000000000 | 1 |
HTTP/2 frames (Akamai)
| fingerprint | co-occurrences |
|---|---|
2:0;4:262144|458753|0|a,m,p,s Match?Exact match in Thumbprint's published controlled catalog captures: node-fetch 26.4.0.The fingerprint page shows the full measured match list. More on the catalog. | 1 |
TCP SYN (p0f)
| fingerprint | co-occurrences |
|---|---|
6:50+14:0:1432:mss*45,8:mss,nop,ws,nop,nop,sok:flow:0 | 2 |
4:43+21:0:1460:mss*44,7:mss,sok,ts,nop,ws:df,id+:0 | 1 |
4:50+14:0:1460:mss*44,10:mss,sok,ts,nop,ws:df,id+:0 | 1 |
TCP SYN (JA4T)
| fingerprint | co-occurrences |
|---|---|
64800_2-1-3-1-1-4_1432_8 | 2 |
64240_2-4-8-1-3_1460_7 | 1 |
64240_2-4-8-1-3_1460_10 | 1 |
Country
| fingerprint | co-occurrences |
|---|---|
US · United States | 2 |
VN · Vietnam | 2 |
Network (ASN)
| fingerprint | co-occurrences |
|---|---|
AS7552 · Viettel Group | 2 |
AS16276 · OVH SAS | 1 |
AS7922 · Comcast Cable Communications, LLC | 1 |