UDP traffic

Datagrams matching asn:401661 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.

Clear search

143

Datagrams

Source addresses

Networks

Countries

Destination ports

Traffic by type

Service queries

57 datagrams from 1 source

Requests 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.

DNS 15 SNMP 14 NetBIOS 9 SSDP 8 TFTP 5 SOAP 5 Sun RPC 1

Latest DNS datagram, to 5353/udp

DNS query PTR _services._dns-sd._udp.local

payload bytes

00000000  00 00 00 00 00 01 00 00  00 00 00 00 09 5f 73 65  |............._se|
00000010  72 76 69 63 65 73 07 5f  64 6e 73 2d 73 64 04 5f  |rvices._dns-sd._|
00000020  75 64 70 05 6c 6f 63 61  6c 00 00 0c 00 01        |udp.local.....|

Other services

2 datagrams from 1 source

First packets of sessions with VPN, voice, tunnelling, database and management services.

XDMCP 1 SIP 1

Latest XDMCP datagram, to 177/udp

payload bytes

00000000  00 01 00 02 00 01 00                              |.......|

Unrecognised

79 datagrams from 1 source

Datagrams no decoder recognised. Their first bytes are kept.

Unrecognised 79

Latest Unrecognised datagram, to 47808/udp

· ·

payload bytes

00000000  81 0a 00 08 01 00 10 08                           |........|

Peer-to-peer

5 datagrams from 1 source

File-sharing clients trying to reach a peer that used one of these addresses before. This is not scanning, so it is left out of every other figure on this page.

BitTorrent 5

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
SNMPv2	161/udp	14	1	6.3
DNS	5355/udp +2	12	1	28 to 54
NetBIOS	137/udp	9	1	3.8
SSDP	1900/udp	8	1	30.8
TFTP	69/udp	5	1	60
mDNS	5353/udp	3	1	2 to 10
RIPv1	520/udp	3	1	131.24
CharGEN	19/udp	3	1	358.8
QOTD	17/udp	3	1	140.3
Portmap	111/udp	1	1	7 to 28

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

161/udp SNMP14
137/udp NetBIOS9
427/udp SLP8
1900/udp SSDP8
10001/udp Ubiquiti discovery7
32414/udp6
502/udp6
3389/udp6
5355/udp DNS5
27960/udp5
69/udp TFTP5
37020/udp SOAP5

DNS questions

DNS record types

ANY5
PTR3

Networks

AS401661 EMBNEX, LLC from 1 source143

Countries

BR Brazil143

Source addresses (unverified)

Address	Network	Cc	Sends	Datagrams	Last seen (UTC)
16.5.0.234	AS401661 EMBNEX, LLC	BR	Unrecognised	143	2026-10-06 07:01

Latest datagrams

2026-10-06 07:01:5516.5.0.234to 5060/udpSIPBR

OPTIONS sip:1@1 SIP/2.0 Via: SIP/2.0/UDP 1:5060;branch=z From: <sip:1@1>;tag=1 To: <sip:1@1> Call-ID: 1 CSeq: 1 OPTIONS Content-Length: 0

payload bytes

00000000  4f 50 54 49 4f 4e 53 20  73 69 70 3a 31 40 31 20  |OPTIONS sip:1@1 |
00000010  53 49 50 2f 32 2e 30 0d  0a 56 69 61 3a 20 53 49  |SIP/2.0..Via: SI|
00000020  50 2f 32 2e 30 2f 55 44  50 20 31 3a 35 30 36 30  |P/2.0/UDP 1:5060|
00000030  3b 62 72 61 6e 63 68 3d  7a 0d 0a 46 72 6f 6d 3a  |;branch=z..From:|
00000040  20 3c 73 69 70 3a 31 40  31 3e 3b 74 61 67 3d 31  | <sip:1@1>;tag=1|
00000050  0d 0a 54 6f 3a 20 3c 73  69 70 3a 31 40 31 3e 0d  |..To: <sip:1@1>.|
00000060  0a 43 61 6c 6c 2d 49 44  3a 20 31 0d 0a 43 53 65  |.Call-ID: 1..CSe|
00000070  71 3a 20 31 20 4f 50 54  49 4f 4e 53 0d 0a 43 6f  |q: 1 OPTIONS..Co|
00000080  6e 74 65 6e 74 2d 4c 65  6e 67 74 68 3a 20 30 0d  |ntent-Length: 0.|
00000090  0a 0d 0a                                          |...|

2026-10-05 20:44:0216.5.0.234to 1900/udpSSDPBR

M-SEARCH * HTTP/1.1 HOST: 239.255.255.250:1900 MAN: "ssdp:discover" MX: 1 ST: upnp:rootdevice

payload bytes

00000000  4d 2d 53 45 41 52 43 48  20 2a 20 48 54 54 50 2f  |M-SEARCH * HTTP/|
00000010  31 2e 31 0d 0a 48 4f 53  54 3a 20 32 33 39 2e 32  |1.1..HOST: 239.2|
00000020  35 35 2e 32 35 35 2e 32  35 30 3a 31 39 30 30 0d  |55.255.250:1900.|
00000030  0a 4d 41 4e 3a 20 22 73  73 64 70 3a 64 69 73 63  |.MAN: "ssdp:disc|
00000040  6f 76 65 72 22 0d 0a 4d  58 3a 20 31 0d 0a 53 54  |over"..MX: 1..ST|
00000050  3a 20 75 70 6e 70 3a 72  6f 6f 74 64 65 76 69 63  |: upnp:rootdevic|
00000060  65 0d 0a 0d 0a                                    |e....|

2026-10-05 20:42:0716.5.0.234to 1900/udpSSDPBR

M-SEARCH * HTTP/1.1 HOST: 239.255.255.250:1900 MAN: "ssdp:discover" MX: 1 ST: upnp:rootdevice

payload bytes

00000000  4d 2d 53 45 41 52 43 48  20 2a 20 48 54 54 50 2f  |M-SEARCH * HTTP/|
00000010  31 2e 31 0d 0a 48 4f 53  54 3a 20 32 33 39 2e 32  |1.1..HOST: 239.2|
00000020  35 35 2e 32 35 35 2e 32  35 30 3a 31 39 30 30 0d  |55.255.250:1900.|
00000030  0a 4d 41 4e 3a 20 22 73  73 64 70 3a 64 69 73 63  |.MAN: "ssdp:disc|
00000040  6f 76 65 72 22 0d 0a 4d  58 3a 20 31 0d 0a 53 54  |over"..MX: 1..ST|
00000050  3a 20 75 70 6e 70 3a 72  6f 6f 74 64 65 76 69 63  |: upnp:rootdevic|
00000060  65 0d 0a 0d 0a                                    |e....|

2026-10-05 20:35:0116.5.0.234to 1900/udpSSDPBR

M-SEARCH * HTTP/1.1 HOST: 239.255.255.250:1900 MAN: "ssdp:discover" MX: 1 ST: ssdp:all

payload bytes

00000000  4d 2d 53 45 41 52 43 48  20 2a 20 48 54 54 50 2f  |M-SEARCH * HTTP/|
00000010  31 2e 31 0d 0a 48 4f 53  54 3a 20 32 33 39 2e 32  |1.1..HOST: 239.2|
00000020  35 35 2e 32 35 35 2e 32  35 30 3a 31 39 30 30 0d  |55.255.250:1900.|
00000030  0a 4d 41 4e 3a 20 22 73  73 64 70 3a 64 69 73 63  |.MAN: "ssdp:disc|
00000040  6f 76 65 72 22 0d 0a 4d  58 3a 20 31 0d 0a 53 54  |over"..MX: 1..ST|
00000050  3a 20 73 73 64 70 3a 61  6c 6c 0d 0a 0d 0a        |: ssdp:all....|

2026-10-05 20:34:2516.5.0.234to 1900/udpSSDPBR

M-SEARCH * HTTP/1.1 HOST: 239.255.255.250:1900 MAN: "ssdp:discover" MX: 1 ST: ssdp:all

payload bytes

00000000  4d 2d 53 45 41 52 43 48  20 2a 20 48 54 54 50 2f  |M-SEARCH * HTTP/|
00000010  31 2e 31 0d 0a 48 4f 53  54 3a 20 32 33 39 2e 32  |1.1..HOST: 239.2|
00000020  35 35 2e 32 35 35 2e 32  35 30 3a 31 39 30 30 0d  |55.255.250:1900.|
00000030  0a 4d 41 4e 3a 20 22 73  73 64 70 3a 64 69 73 63  |.MAN: "ssdp:disc|
00000040  6f 76 65 72 22 0d 0a 4d  58 3a 20 31 0d 0a 53 54  |over"..MX: 1..ST|
00000050  3a 20 73 73 64 70 3a 61  6c 6c 0d 0a 0d 0a        |: ssdp:all....|

2026-10-05 20:31:4916.5.0.234to 1900/udpSSDPBR

M-SEARCH * HTTP/1.1 HOST: 239.255.255.250:1900 MAN: "ssdp:discover" MX: 1 ST: ssdp:all

payload bytes

00000000  4d 2d 53 45 41 52 43 48  20 2a 20 48 54 54 50 2f  |M-SEARCH * HTTP/|
00000010  31 2e 31 0d 0a 48 4f 53  54 3a 20 32 33 39 2e 32  |1.1..HOST: 239.2|
00000020  35 35 2e 32 35 35 2e 32  35 30 3a 31 39 30 30 0d  |55.255.250:1900.|
00000030  0a 4d 41 4e 3a 20 22 73  73 64 70 3a 64 69 73 63  |.MAN: "ssdp:disc|
00000040  6f 76 65 72 22 0d 0a 4d  58 3a 20 31 0d 0a 53 54  |over"..MX: 1..ST|
00000050  3a 20 73 73 64 70 3a 61  6c 6c 0d 0a 0d 0a        |: ssdp:all....|

2026-10-05 20:30:3116.5.0.234to 1900/udpSSDPBR

M-SEARCH * HTTP/1.1 HOST: 239.255.255.250:1900 MAN: "ssdp:discover" MX: 1 ST: ssdp:all

payload bytes

00000000  4d 2d 53 45 41 52 43 48  20 2a 20 48 54 54 50 2f  |M-SEARCH * HTTP/|
00000010  31 2e 31 0d 0a 48 4f 53  54 3a 20 32 33 39 2e 32  |1.1..HOST: 239.2|
00000020  35 35 2e 32 35 35 2e 32  35 30 3a 31 39 30 30 0d  |55.255.250:1900.|
00000030  0a 4d 41 4e 3a 20 22 73  73 64 70 3a 64 69 73 63  |.MAN: "ssdp:disc|
00000040  6f 76 65 72 22 0d 0a 4d  58 3a 20 31 0d 0a 53 54  |over"..MX: 1..ST|
00000050  3a 20 73 73 64 70 3a 61  6c 6c 0d 0a 0d 0a        |: ssdp:all....|

2026-10-05 20:19:2916.5.0.234to 1900/udpSSDPBR

M-SEARCH * HTTP/1.1 HOST: 239.255.255.250:1900 MAN: "ssdp:discover" MX: 2 ST: ssdp:all

payload bytes

00000000  4d 2d 53 45 41 52 43 48  20 2a 20 48 54 54 50 2f  |M-SEARCH * HTTP/|
00000010  31 2e 31 0d 0a 48 4f 53  54 3a 20 32 33 39 2e 32  |1.1..HOST: 239.2|
00000020  35 35 2e 32 35 35 2e 32  35 30 3a 31 39 30 30 0d  |55.255.250:1900.|
00000030  0a 4d 41 4e 3a 20 22 73  73 64 70 3a 64 69 73 63  |.MAN: "ssdp:disc|
00000040  6f 76 65 72 22 0d 0a 4d  58 3a 20 32 0d 0a 53 54  |over"..MX: 2..ST|
00000050  3a 20 73 73 64 70 3a 61  6c 6c 0d 0a 0d 0a        |: ssdp:all....|

2026-10-05 20:17:2316.5.0.234to 1900/udpSSDPBR

M-SEARCH * HTTP/1.1 HOST: 239.255.255.250:1900 MAN: "ssdp:discover" MX: 2 ST: ssdp:all

payload bytes

00000000  4d 2d 53 45 41 52 43 48  20 2a 20 48 54 54 50 2f  |M-SEARCH * HTTP/|
00000010  31 2e 31 0d 0a 48 4f 53  54 3a 20 32 33 39 2e 32  |1.1..HOST: 239.2|
00000020  35 35 2e 32 35 35 2e 32  35 30 3a 31 39 30 30 0d  |55.255.250:1900.|
00000030  0a 4d 41 4e 3a 20 22 73  73 64 70 3a 64 69 73 63  |.MAN: "ssdp:disc|
00000040  6f 76 65 72 22 0d 0a 4d  58 3a 20 32 0d 0a 53 54  |over"..MX: 2..ST|
00000050  3a 20 73 73 64 70 3a 61  6c 6c 0d 0a 0d 0a        |: ssdp:all....|

2026-10-05 20:17:0216.5.0.234to 161/udpSNMPBR

0%·public·{s·0 0·+·

payload bytes

00000000  30 25 02 01 01 04 06 70  75 62 6c 69 63 a5 18 02  |0%.....public...|
00000010  04 7b 73 cc 13 02 01 00  02 02 07 d0 30 09 30 07  |.{s.........0.0.|
00000020  06 03 2b 06 01 05 00                              |..+....|

2026-10-05 20:15:0016.5.0.234to 161/udpSNMPBR

0%·public·{s·0 0·+·

payload bytes

00000000  30 25 02 01 01 04 06 70  75 62 6c 69 63 a5 18 02  |0%.....public...|
00000010  04 7b 73 cc 13 02 01 00  02 02 07 d0 30 09 30 07  |.{s.........0.0.|
00000020  06 03 2b 06 01 05 00                              |..+....|

2026-10-05 20:14:5716.5.0.234to 161/udpSNMPBR

0%·public·{s·0 0·+·

payload bytes

00000000  30 25 02 01 01 04 06 70  75 62 6c 69 63 a5 18 02  |0%.....public...|
00000010  04 7b 73 cc 13 02 01 00  02 02 07 d0 30 09 30 07  |.{s.........0.0.|
00000020  06 03 2b 06 01 05 00                              |..+....|

2026-10-05 20:13:3916.5.0.234to 161/udpSNMPBR

0%·public·{s·0 0·+·

payload bytes

00000000  30 25 02 01 01 04 06 70  75 62 6c 69 63 a5 18 02  |0%.....public...|
00000010  04 7b 73 cc 13 02 01 00  02 02 07 d0 30 09 30 07  |.{s.........0.0.|
00000020  06 03 2b 06 01 05 00                              |..+....|

2026-10-05 20:13:2516.5.0.234to 161/udpSNMPBR

0%·public·{s·0 0·+·

payload bytes

00000000  30 25 02 01 01 04 06 70  75 62 6c 69 63 a5 18 02  |0%.....public...|
00000010  04 7b 73 cc 13 02 01 00  02 02 07 d0 30 09 30 07  |.{s.........0.0.|
00000020  06 03 2b 06 01 05 00                              |..+....|

2026-10-05 20:11:1716.5.0.234to 161/udpSNMPBR

0%·public·{s·0 0·+·

payload bytes

00000000  30 25 02 01 01 04 06 70  75 62 6c 69 63 a5 18 02  |0%.....public...|
00000010  04 7b 73 cc 13 02 01 00  02 02 07 d0 30 09 30 07  |.{s.........0.0.|
00000020  06 03 2b 06 01 05 00                              |..+....|