UDP traffic / QUIC transport parameter fingerprint
cde977acba33
QUIC transport parameter fingerprint. 12 datagrams in the last 30 days, last seen 2026-10-09 10:12 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=100,9=100,b=26,c,e=4,f/0,grease
12
Datagrams
4
Source addresses
1
Networks
4
Countries
3
Destination ports
Traffic by type
QUIC
12 datagrams from 4 sourcesInitial packets of HTTP/3 connections, decoded on the sensor.
Latest QUIC datagram, to 853/udp
Destination ports
QUIC clients (JA4)
- q13i0311dq_55b375c5d22e_c183556c78e2 from 4 sources12
QUIC transport parameters
- cde977acba33 from 4 sources12
QUIC versions
- 112
Networks
- AS45102 Alibaba (US) Technology Co., Ltd. from 4 sources12
Countries
Source addresses (unverified)
| Address | Network | Cc | Sends | Datagrams | Last seen (UTC) |
|---|---|---|---|---|---|
| 47.91.125.252 | AS45102 Alibaba (US) Technology Co., Ltd. | AE | QUIC | 3 | 2026-10-09 10:12 |
| 8.208.10.94 | AS45102 Alibaba (US) Technology Co., Ltd. | GB | QUIC | 3 | 2026-10-09 04:58 |
| 47.251.13.59 | AS45102 Alibaba (US) Technology Co., Ltd. | US | QUIC | 3 | 2026-10-09 01:10 |
| 47.245.117.221 | AS45102 Alibaba (US) Technology Co., Ltd. | SG | QUIC | 3 | 2026-10-09 01:03 |
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.