TCP SYN (p0f)

4:55+9:0:1460:62727,7:mss,sok,ts,nop,ws:df,id+:0

first seen 2026-06-13 16:58 · last seen 2026-09-10 05:37 · JSON

Last 7 days (3 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

IP version4
Initial TTL55+9
Options length0
MSS1460
Window size62727
Window scale7
Options layoutmss,sok,ts,nop,ws
Quirksdf,id+
Payload class0

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
t12d091100_08d6d9b33cd7_6d6c278f61f214
t13d5212h2_b262b3658495_8e6e362c5eac4
t13i1909h2_9dc949149365_97f8aa674fd94
t13d5911h2_a33745022dd6_1f22a2ca17c41

HTTP request (JA4H)

fingerprintco-occurrences
ge11nn050000_71b6368f7680_000000000000_0000000000007
ge20nn04en00_a1e84a948d10_000000000000_0000000000005
ge11nn060000_ced415d47374_000000000000_0000000000004
ge11nn050000_74fed546530c_000000000000_0000000000003
ge20nr030000_ff50983941c1_000000000000_0000000000002
ge20nr030000_80b089f68b8e_000000000000_0000000000002

HTTP/2 frames (Akamai)

fingerprintco-occurrences
2:0|00|0|m,p,a,s5
2:0;4:4194304;5:16384;6:10485760|1073741824|0|a,m,p,s Match?Exact match in Thumbprint's published controlled catalog captures: go-net/http 1.26.6, go-net/http 1.26.8, go-net/http 1.26.7, +6 more.The fingerprint page shows the full measured match list. More on the catalog.4

TCP SYN (JA4T)

fingerprintco-occurrences
62727_2-4-8-1-3_1460_716

User-Agent

fingerprintco-occurrences
Mozilla/5.0 (compatible)14
visionheight.com/scan Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) Chrome/126.0.0.0 Safari/537.364
Iframely/1.3.1 (+https://iframely.com/docs/about) Atlassian4
Iframely/1.3.1 (+https://iframely.com/docs/about)1

Country

fingerprintco-occurrences
US · United States23

Network (ASN)

fingerprintco-occurrences
AS14618 · Amazon.com, Inc.19
AS16509 · Amazon.com, Inc.4