UDP traffic
Datagrams matching port:520 sent to HoneyLabs sensors over UDP in the last 7 days. 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.
56
Datagrams
35
Source addresses
15
Networks
10
Countries
1
Destination ports
Traffic by type
Service queries
2 datagrams from 1 sourceRequests a service answers without a handshake. Scanners send them to find open DNS, NTP, SNMP or SSDP servers, which are also the servers reflection attacks abuse.
Latest DNS datagram, to 520/udp
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 |........|
Unrecognised
54 datagrams from 34 sourcesDatagrams no decoder recognised. Their first bytes are kept.
Latest Unrecognised datagram, to 520/udp
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.
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 RIP56
Networks
- AS51115 HLL LLC from 1 source8
- AS20052 Arbor Networks, Inc. from 5 sources8
- AS14061 DigitalOcean, LLC from 3 sources6
- AS21859 Zenlayer Inc from 5 sources6
- AS396982 Google LLC from 6 sources6
- AS213412 ONYPHE SAS from 4 sources4
- AS63949 Akamai Connected Cloud from 1 source4
- AS401661 EMBNEX, LLC from 1 source3
- AS216014 BestDC Limited from 1 source2
- AS211680 Sistemas Informaticos, S.A. from 2 sources2
Countries
Source addresses (unverified)
| Address | Network | Cc | Sends | Datagrams | Last seen (UTC) |
|---|---|---|---|---|---|
| 185.94.111.1 | AS51115 HLL LLC | RU | Unrecognised | 8 | 2026-10-08 22:13 |
| 212.71.250.62 | AS63949 Akamai Connected Cloud | GB | Unrecognised | 4 | 2026-10-07 01:38 |
| 146.88.241.80 | AS20052 Arbor Networks, Inc. | US | Unrecognised | 3 | 2026-10-09 12:45 |
| 16.5.0.234 | AS401661 EMBNEX, LLC | BR | Unrecognised | 3 | 2026-10-05 17:37 |
| 157.230.83.56 | AS14061 DigitalOcean, LLC | US | Unrecognised | 2 | 2026-10-09 17:23 |
| 185.226.197.28 | AS21859 Zenlayer Inc | PT | Unrecognised | 2 | 2026-10-10 02:42 |
| 47.84.101.219 | AS45102 Alibaba (US) Technology Co., Ltd. | SG | DNS | 2 | 2026-10-06 07:35 |
| 206.189.14.75 | AS14061 DigitalOcean, LLC | NL | Unrecognised | 2 | 2026-10-07 00:19 |
| 146.88.241.170 | AS20052 Arbor Networks, Inc. | US | Unrecognised | 2 | 2026-10-09 13:46 |
| 137.184.210.250 | AS14061 DigitalOcean, LLC | US | Unrecognised | 2 | 2026-10-05 13:50 |
| 193.47.62.187 | AS216014 BestDC Limited | BG | Unrecognised | 2 | 2026-10-07 02:14 |
| 198.235.24.242 | AS396982 Google LLC | US | Unrecognised | 1 | 2026-10-07 14:33 |
| 66.132.186.218 | AS398324 Censys, Inc. | US | Unrecognised | 1 | 2026-10-05 13:16 |
| 146.88.241.100 | AS20052 Arbor Networks, Inc. | US | Unrecognised | 1 | 2026-10-06 07:03 |
| 91.230.168.118 | AS213412 ONYPHE SAS | US | Unrecognised | 1 | 2026-10-10 09:23 |
| 93.174.95.106 | AS202425 IP Volume inc | NL | Unrecognised | 1 | 2026-10-05 14:17 |
| 216.25.89.101 | AS396982 Google LLC | US | Unrecognised | 1 | 2026-10-10 13:42 |
| 109.105.210.62 | AS21859 Zenlayer Inc | PT | Unrecognised | 1 | 2026-10-09 08:12 |
| 91.230.168.114 | AS213412 ONYPHE SAS | US | Unrecognised | 1 | 2026-10-07 01:19 |
| 103.210.22.74 | AS135377 UCLOUD INFORMATION TECHNOLOGY (HK) LIMIT | SG | Unrecognised | 1 | 2026-10-08 07:55 |
Latest datagrams
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 |........|
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 |........|
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 |........|
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 |........|
payload bytes
00000000 01 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| 00000010 00 00 00 00 00 00 00 10 |........|
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 |........|
payload bytes
00000000 01 01 30 30 30 30 30 30 30 30 30 30 30 30 30 30 |..00000000000000| 00000010 30 30 30 30 30 30 30 10 |0000000.|
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 10 00 |........|
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 10 00 |........|
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 10 00 |........|
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 10 00 |........|
payload bytes
00000000 01 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| 00000010 00 00 00 00 00 00 00 10 |........|
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 |........|
payload bytes
00000000 01 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| 00000010 00 00 00 00 00 00 00 10 |........|
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 |........|