UDP traffic

Datagrams matching port:5353 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

207

Datagrams

144

Source addresses

Networks

Countries

Destination ports

Traffic by type

Service queries

141 datagrams from 96 sources

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 133 mDNS 8

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

1 datagrams from 1 source

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

OpenVPN 1

Latest OpenVPN datagram, to 5353/udp

\.% z·~#p</·~:qTC$HCF Q·k·gX,R5*wU$}SHn·wz·1kct·+8U4 `6ub·M·p·8gW]d+%R;·MIM8,·

payload bytes

00000000  5c 2e 25 20 7a 06 7e 23  70 3c 2f 0c 7e 3a 71 54  |\.% z.~#p</.~:qT|
00000010  43 24 48 43 46 09 51 0b  02 6b 02 67 58 2c 52 35  |C$HCF.Q..k.gX,R5|
00000020  2a 77 55 24 7d 53 48 6e  10 77 7a 0e 31 6b 63 74  |*wU$}SHn.wz.1kct|
00000030  0f 2b 38 55 34 09 60 36  75 62 1e 4d 0e 70 02 38  |.+8U4.`6ub.M.p.8|
00000040  67 57 5d 64 2b 25 52 3b  1c 4d 49 4d 38 2c c3 f4  |gW]d+%R;.MIM8,..|

Unrecognised

65 datagrams from 49 sources

Datagrams no decoder recognised. Their first bytes are kept.

Unrecognised 65

Latest Unrecognised datagram, to 5353/udp

·.#> ·^·Wyq96N9@'$s ·m·p<|z·o· ·J·.K*·j·[:<)t|Q·o[2\w"·

payload bytes

00000000  12 2e 23 3e 0a 1b 00 12  5e 1f 57 79 71 39 36 4e  |..#>....^.Wyq96N|
00000010  39 40 27 24 73 0a 19 6d  1c 70 3c 7c 7a 13 6f 0c  |9@'$s..m.p<|z.o.|
00000020  0d 12 4a 17 2e 4b 2a 0c  6a 01 05 5b 3a 3c 29 74  |..J..K*.j..[:<)t|
00000030  7c 51 18 6f 5b 32 5c 77  22 00 01                 ||Q.o[2\w"..|

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
mDNS	5353/udp	207	144	2 to 10

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

5353/udp DNS207

DNS questions

DNS record types

PTR129
TXT2
A2

Networks

AS396982 Google LLC from 28 sources28
AS216014 BestDC Limited from 1 source26
AS6939 Hurricane Electric LLC from 21 sources21
AS14061 DigitalOcean, LLC from 9 sources15
AS45102 Alibaba (US) Technology Co., Ltd. from 4 sources12
AS50219 Valence Technology Co. from 5 sources10
AS20052 Arbor Networks, Inc. from 7 sources10
AS213412 ONYPHE SAS from 6 sources8
AS8075 Microsoft Corporation from 8 sources8
AS57044 JSC ER-Telecom Holding from 4 sources7

Countries

Source addresses (unverified)

Address	Network	Cc	Sends	Datagrams	Last seen (UTC)
193.47.62.187	AS216014 BestDC Limited	BG	DNS	26	2026-10-07 11:10
47.84.179.21	AS45102 Alibaba (US) Technology Co., Ltd.	SG	DNS	5	2026-10-06 17:04
47.245.84.83	AS45102 Alibaba (US) Technology Co., Ltd.	SG	DNS	5	2026-10-10 05:06
159.223.167.140	AS14061 DigitalOcean, LLC	US	mDNS	4	2026-10-07 08:27
16.5.0.234	AS401661 EMBNEX, LLC	BR	DNS	3	2026-10-05 17:01
37.112.63.117	AS57044 JSC ER-Telecom Holding	RU	Unrecognised	3	2026-10-08 07:22
62.210.89.150	AS12876 Scaleway SAS	FR	Unrecognised	3	2026-10-10 01:21
159.203.67.164	AS14061 DigitalOcean, LLC	US	Unrecognised	3	2026-10-08 03:12
172.104.155.101	AS63949 Akamai Connected Cloud	DE	DNS	3	2026-10-05 16:57
146.88.241.100	AS20052 Arbor Networks, Inc.	US	DNS	2	2026-10-08 05:48
194.164.107.4	AS50219 Valence Technology Co.	US	DNS	2	2026-10-05 13:22
159.203.120.106	AS14061 DigitalOcean, LLC	US	Unrecognised	2	2026-10-09 21:46
195.24.207.184	AS15964 CAMTEL	CM	Unrecognised	2	2026-10-06 04:23
146.88.241.70	AS20052 Arbor Networks, Inc.	US	DNS	2	2026-10-11 02:25
216.226.76.20	AS50219 Valence Technology Co.	US	DNS	2	2026-10-07 16:21
203.55.131.5	AS32475 Internap Holding LLC	US	DNS	2	2026-10-07 01:23
91.230.168.118	AS213412 ONYPHE SAS	US	Unrecognised	2	2026-10-09 22:53
216.226.77.30	AS50219 Valence Technology Co.	US	DNS	2	2026-10-10 13:14
216.226.78.20	AS50219 Valence Technology Co.	US	DNS	2	2026-10-09 14:12
146.88.240.26	AS20052 Arbor Networks, Inc.	US	DNS	2	2026-10-09 08:14

Latest datagrams

2026-10-11 04:13:4064.62.156.50to 5353/udpDNSUS

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.....|

2026-10-11 03:53:22174.138.216.234to 5353/udpUnrecognisedCA

·.#> ·^·Wyq96N9@'$s ·m·p<|z·o· ·J·.K*·j·[:<)t|Q·o[2\w"·

payload bytes

00000000  12 2e 23 3e 0a 1b 00 12  5e 1f 57 79 71 39 36 4e  |..#>....^.Wyq96N|
00000010  39 40 27 24 73 0a 19 6d  1c 70 3c 7c 7a 13 6f 0c  |9@'$s..m.p<|z.o.|
00000020  0d 12 4a 17 2e 4b 2a 0c  6a 01 05 5b 3a 3c 29 74  |..J..K*.j..[:<)t|
00000030  7c 51 18 6f 5b 32 5c 77  22 00 01                 ||Q.o[2\w"..|

2026-10-11 02:25:07146.88.241.70to 5353/udpDNSUS

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.....|

2026-10-11 01:28:36146.88.241.70to 5353/udpDNSUS

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.....|

2026-10-11 01:26:07166.78.113.115to 5353/udpUnrecognisedUS

i.·3·8?·C·.Hn8·1·%M'wi·

payload bytes

00000000  69 2e 1e 33 0c 38 3f 03  43 7f 2e 48 6e 38 11 31  |i..3.8?.C..Hn8.1|
00000010  1a 25 4d 27 77 69 08 98                           |.%M'wi..|

2026-10-11 00:26:35205.210.31.60to 5353/udpDNSUS

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.....|

2026-10-10 23:51:5878.232.50.178to 5353/udpDNSFR

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

payload bytes

00000000  00 00 01 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.....|

2026-10-10 21:43:36205.210.31.221to 5353/udpDNSUS

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.....|

2026-10-10 18:40:06205.210.31.84to 5353/udpDNSUS

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.....|

2026-10-10 18:32:0166.132.172.236to 5353/udpDNSUS

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.....|

2026-10-10 18:24:10198.235.24.176to 5353/udpDNSUS

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.....|

2026-10-10 18:08:2978.107.31.154to 5353/udpUnrecognisedRU

;.G2'm·K[:Dt+· %'L!{c#*·v ·~·QYS·f

payload bytes

00000000  3b 2e 47 32 27 6d 00 4b  5b 3a 44 74 2b 7f 0e 1f  |;.G2'm.K[:Dt+...|
00000010  0d 25 27 4c 21 7b 63 23  2a 10 76 0a 16 7e 0b 51  |.%'L!{c#*.v..~.Q|
00000020  59 53 8a 66                                       |YS.f|

2026-10-10 17:56:4864.226.83.235to 5353/udpUnrecognisedDE
2.d·
payload bytes
```
00000000  32 2e 64 e6 b0                                    |2.d..|
```

2026-10-10 17:53:07162.216.149.250to 5353/udpmDNSUS

4·VERSSION·BIND·

payload bytes

00000000  34 ef 01 00 00 01 00 00  00 00 00 00 07 56 45 52  |4............VER|
00000010  53 53 49 4f 4e 04 42 49  4e 44 00 00 10 00 03     |SSION.BIND.....|

2026-10-10 15:54:52216.25.89.147to 5353/udpmDNSUS

4·VERSSION·BIND·

payload bytes

00000000  34 ef 01 00 00 01 00 00  00 00 00 00 07 56 45 52  |4............VER|
00000010  53 53 49 4f 4e 04 42 49  4e 44 00 00 10 00 03     |SSION.BIND.....|