UDP traffic
Datagrams matching port:139 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.
29
Datagrams
23
Source addresses
3
Networks
4
Countries
1
Destination ports
Traffic by type
Service queries
12 datagrams from 6 sourcesRequests 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 NetBIOS datagram, to 139/udp
payload bytes
00000000 e5 d8 00 00 00 01 00 00 00 00 00 00 20 43 4b 41 |............ CKA| 00000010 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 |AAAAAAAAAAAAAAAA| 00000020 41 41 41 41 41 41 41 41 41 41 41 41 41 00 00 21 |AAAAAAAAAAAAA..!| 00000030 00 01 |..|
Unrecognised
17 datagrams from 17 sourcesDatagrams no decoder recognised. Their first bytes are kept.
Latest Unrecognised datagram, to 139/udp
Payload bytes withheld: they contain the sensor's address.
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 |
|---|---|---|---|---|
| NetBIOS | 139/udp | 12 | 6 | 3.8 |
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
- 139/udp29
Networks
- AS8075 Microsoft Corporation from 17 sources17
- AS264617 GRUPO PANAGLOBAL 15 S.A from 2 sources8
- AS396982 Google LLC from 4 sources4
Countries
Source addresses (unverified)
| Address | Network | Cc | Sends | Datagrams | Last seen (UTC) |
|---|---|---|---|---|---|
| 185.191.236.38 | AS264617 GRUPO PANAGLOBAL 15 S.A | CH | NetBIOS | 5 | 2026-10-10 22:34 |
| 170.231.236.98 | AS264617 GRUPO PANAGLOBAL 15 S.A | PA | NetBIOS | 3 | 2026-10-10 22:21 |
| 20.14.94.44 | AS8075 Microsoft Corporation | US | Unrecognised | 1 | 2026-10-06 04:04 |
| 172.203.218.10 | AS8075 Microsoft Corporation | US | Unrecognised | 1 | 2026-10-07 22:13 |
| 162.216.150.135 | AS396982 Google LLC | US | NetBIOS | 1 | 2026-10-08 23:05 |
| 134.33.97.170 | AS8075 Microsoft Corporation | US | Unrecognised | 1 | 2026-10-09 15:43 |
| 172.180.64.138 | AS8075 Microsoft Corporation | US | Unrecognised | 1 | 2026-10-09 15:40 |
| 20.168.10.43 | AS8075 Microsoft Corporation | US | Unrecognised | 1 | 2026-10-07 01:07 |
| 20.150.195.42 | AS8075 Microsoft Corporation | US | Unrecognised | 1 | 2026-10-06 04:04 |
| 172.212.104.156 | AS8075 Microsoft Corporation | US | Unrecognised | 1 | 2026-10-08 18:59 |
| 20.38.35.80 | AS8075 Microsoft Corporation | US | Unrecognised | 1 | 2026-10-06 04:07 |
| 20.55.3.53 | AS8075 Microsoft Corporation | US | Unrecognised | 1 | 2026-10-07 22:11 |
| 172.203.209.193 | AS8075 Microsoft Corporation | US | Unrecognised | 1 | 2026-10-10 12:36 |
| 35.203.210.8 | AS396982 Google LLC | GB | NetBIOS | 1 | 2026-10-09 04:36 |
| 162.216.149.239 | AS396982 Google LLC | US | NetBIOS | 1 | 2026-10-09 06:22 |
| 20.42.110.218 | AS8075 Microsoft Corporation | US | Unrecognised | 1 | 2026-10-07 22:10 |
| 4.148.17.82 | AS8075 Microsoft Corporation | US | Unrecognised | 1 | 2026-10-10 12:32 |
| 20.55.37.105 | AS8075 Microsoft Corporation | US | Unrecognised | 1 | 2026-10-06 03:59 |
| 20.163.58.213 | AS8075 Microsoft Corporation | US | Unrecognised | 1 | 2026-10-08 19:04 |
| 20.163.12.130 | AS8075 Microsoft Corporation | US | Unrecognised | 1 | 2026-10-07 01:02 |
Latest datagrams
payload bytes
00000000 e5 d8 00 00 00 01 00 00 00 00 00 00 20 43 4b 41 |............ CKA| 00000010 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 |AAAAAAAAAAAAAAAA| 00000020 41 41 41 41 41 41 41 41 41 41 41 41 41 00 00 21 |AAAAAAAAAAAAA..!| 00000030 00 01 |..|
payload bytes
00000000 e5 d8 00 00 00 01 00 00 00 00 00 00 20 43 4b 41 |............ CKA| 00000010 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 |AAAAAAAAAAAAAAAA| 00000020 41 41 41 41 41 41 41 41 41 41 41 41 41 00 00 21 |AAAAAAAAAAAAA..!| 00000030 00 01 |..|
payload bytes
00000000 e5 d8 00 00 00 01 00 00 00 00 00 00 20 43 4b 41 |............ CKA| 00000010 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 |AAAAAAAAAAAAAAAA| 00000020 41 41 41 41 41 41 41 41 41 41 41 41 41 00 00 21 |AAAAAAAAAAAAA..!| 00000030 00 01 |..|
payload bytes
00000000 e5 d8 00 00 00 01 00 00 00 00 00 00 20 43 4b 41 |............ CKA| 00000010 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 |AAAAAAAAAAAAAAAA| 00000020 41 41 41 41 41 41 41 41 41 41 41 41 41 00 00 21 |AAAAAAAAAAAAA..!| 00000030 00 01 |..|
Payload bytes withheld: they contain the sensor's address.
Payload bytes withheld: they contain the sensor's address.
Payload bytes withheld: they contain the sensor's address.
Payload bytes withheld: they contain the sensor's address.
payload bytes
00000000 e5 d8 00 00 00 01 00 00 00 00 00 00 20 43 4b 41 |............ CKA| 00000010 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 |AAAAAAAAAAAAAAAA| 00000020 41 41 41 41 41 41 41 41 41 41 41 41 41 00 00 21 |AAAAAAAAAAAAA..!| 00000030 00 01 |..|
payload bytes
00000000 e5 d8 00 00 00 01 00 00 00 00 00 00 20 43 4b 41 |............ CKA| 00000010 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 |AAAAAAAAAAAAAAAA| 00000020 41 41 41 41 41 41 41 41 41 41 41 41 41 00 00 21 |AAAAAAAAAAAAA..!| 00000030 00 01 |..|
payload bytes
00000000 e5 d8 00 00 00 01 00 00 00 00 00 00 20 43 4b 41 |............ CKA| 00000010 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 |AAAAAAAAAAAAAAAA| 00000020 41 41 41 41 41 41 41 41 41 41 41 41 41 00 00 21 |AAAAAAAAAAAAA..!| 00000030 00 01 |..|
Payload bytes withheld: they contain the sensor's address.
Payload bytes withheld: they contain the sensor's address.
Payload bytes withheld: they contain the sensor's address.
Payload bytes withheld: they contain the sensor's address.