UDP traffic

Datagrams matching port:520 sent to HoneyLabs sensors over UDP in the last 24 hours. DNS questions and QUIC client fingerprints are decoded on the sensor. Other datagrams are kept as their first bytes and labelled by protocol where it can be recognised.

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.

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Datagrams

Source addresses

Networks

Countries

Destination ports

Traffic by type

Unrecognised

4 datagrams from 4 sources

Datagrams no decoder recognised. Their first bytes are kept.

Unrecognised 4

Latest Unrecognised datagram, to 520/udp

·D·

payload bytes

00000000  01 01 00 00 00 02 00 00  44 00 00 00 00 00 00 00  |........D.......|
00000010  00 00 00 00 00 00 00 0f                           |........|

Amplification checks

Probes for services that answer a small request with a much larger reply, the property reflection attacks rely on.

Service	Port	Datagrams	Sources	Factor
RIPv1	520/udp	4	4	131.24

The factor is how many bytes a reachable server can send back for each byte it receives, as published by CISA in alert TA14-017A.

Destination ports

520/udp RIP4

Networks

AS213412 ONYPHE SAS from 2 sources2
AS396982 Google LLC from 1 source1
AS4837 CHINA UNICOM China169 Backbone from 1 source1

Countries

Source addresses (unverified)

Address	Network	Cc	Sends	Datagrams	Last seen (UTC)
123.144.21.9	AS4837 CHINA UNICOM China169 Backbone	CN	Unrecognised	1	2026-10-10 22:27
91.231.89.166	AS213412 ONYPHE SAS	FR	Unrecognised	1	2026-10-10 09:39
91.230.168.118	AS213412 ONYPHE SAS	US	Unrecognised	1	2026-10-10 09:23
216.25.89.101	AS396982 Google LLC	US	Unrecognised	1	2026-10-10 13:42

Latest datagrams

2026-10-10 22:27:28123.144.21.9to 520/udpUnrecognisedCN

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payload bytes

00000000  01 01 00 00 00 02 00 00  44 00 00 00 00 00 00 00  |........D.......|
00000010  00 00 00 00 00 00 00 0f                           |........|

2026-10-10 13:42:52216.25.89.101to 520/udpUnrecognisedUS

payload bytes

00000000  01 01 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000010  00 00 00 00 00 00 00 10                           |........|

2026-10-10 09:39:0091.231.89.166to 520/udpUnrecognisedFR

payload bytes

00000000  01 01 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000010  00 00 00 00 00 00 00 10                           |........|

2026-10-10 09:23:4891.230.168.118to 520/udpUnrecognisedUS

payload bytes

00000000  01 01 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000010  00 00 00 00 00 00 00 10                           |........|