UDP traffic / QUIC transport parameter fingerprint
12d07494ae7c
QUIC transport parameter fingerprint. 8 datagrams in the last 30 days, last seen 2026-10-08 08:29 UTC.
A UDP source address can be forged, so each address listed here either sent the traffic or was impersonated by whoever did. UDP traffic is kept out of verdicts, feeds, watchlists and alerts.
Parameters as offered
1=30000,3=1452,4=786432,5=524288,6=524288,7=524288,8=0,9=100,b=26,c,e=4,f/4,grease
8
Datagrams
4
Source addresses
1
Networks
4
Countries
1
Destination ports
Traffic by type
QUIC
8 datagrams from 4 sourcesInitial packets of HTTP/3 connections, decoded on the sensor.
Latest QUIC datagram, to 443/udp
Destination ports
- 443/udp QUIC8
QUIC clients (JA4)
- q13i0311h3_55b375c5d22e_c183556c78e2 from 4 sources8
QUIC transport parameters
- 12d07494ae7c from 4 sources8
QUIC versions
- 18
Networks
- AS45102 Alibaba (US) Technology Co., Ltd. from 4 sources8
Countries
Source addresses (unverified)
| Address | Network | Cc | Sends | Datagrams | Last seen (UTC) |
|---|---|---|---|---|---|
| 47.91.125.252 | AS45102 Alibaba (US) Technology Co., Ltd. | AE | QUIC | 2 | 2026-10-08 08:29 |
| 47.89.154.16 | AS45102 Alibaba (US) Technology Co., Ltd. | US | QUIC | 2 | 2026-10-08 06:03 |
| 8.208.10.94 | AS45102 Alibaba (US) Technology Co., Ltd. | GB | QUIC | 2 | 2026-10-08 01:37 |
| 47.245.117.221 | AS45102 Alibaba (US) Technology Co., Ltd. | SG | QUIC | 2 | 2026-10-08 01:24 |
Latest datagrams
About this fingerprint
A hash of the QUIC transport parameters a client offers: which parameters it sends and the values it picks for flow-control limits, idle timeout and connection IDs. Parameter order and GREASE values are normalised before hashing. Two clients with the same TLS stack but different QUIC libraries usually differ here.