UDP traffic

Datagrams matching port:17186 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.

Clear search

Datagrams

Source addresses

Networks

Countries

Destination ports

Traffic by type

Service queries

1 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 1

Latest DNS datagram, to 17186/udp

· ·UUUU·U·<·

payload bytes

00000000  1a 09 fa ba 00 00 00 00  00 00 00 02 55 55 55 55  |............UUUU|
00000010  00 00 00 01 00 00 00 01  00 00 00 00 00 00 00 00  |................|
00000020  00 00 00 00 00 00 00 00  ff ff 55 12 00 00 00 3c  |..........U....<|
00000030  00 00 00 01 00 00 00 02  00 00 00 00 00 00 00 00  |................|

Unrecognised

4 datagrams from 4 sources

Datagrams no decoder recognised. Their first bytes are kept.

Unrecognised 4

Latest Unrecognised datagram, to 17186/udp

· ·UUUU·U·<·

payload bytes

00000000  1a 09 fa ba 00 00 00 00  00 00 00 02 55 55 55 55  |............UUUU|
00000010  00 00 00 01 00 00 00 01  00 00 00 00 00 00 00 00  |................|
00000020  00 00 00 00 00 00 00 00  ff ff 55 12 00 00 00 3c  |..........U....<|
00000030  00 00 00 01 00 00 00 02  00 00 00 00 00 00 00 00  |................|

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
DNS	17186/udp	1	1	28 to 54

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

17186/udp5

Networks

AS398324 Censys, Inc. from 4 sources4
AS398722 Censys, Inc. from 1 source1

Countries

US United States5

Source addresses (unverified)

Address	Network	Cc	Sends	Datagrams	Last seen (UTC)
66.132.172.236	AS398324 Censys, Inc.	US	Unrecognised	1	2026-10-06 20:56
66.132.186.219	AS398324 Censys, Inc.	US	DNS	1	2026-10-06 05:55
66.132.186.207	AS398324 Censys, Inc.	US	Unrecognised	1	2026-10-06 15:35
66.132.172.225	AS398324 Censys, Inc.	US	Unrecognised	1	2026-10-06 20:50
199.45.154.182	AS398722 Censys, Inc.	US	Unrecognised	1	2026-10-06 16:26

Latest datagrams

2026-10-06 20:56:2666.132.172.236to 17186/udpUnrecognisedUS

· ·UUUU·U·<·

payload bytes

00000000  1a 09 fa ba 00 00 00 00  00 00 00 02 55 55 55 55  |............UUUU|
00000010  00 00 00 01 00 00 00 01  00 00 00 00 00 00 00 00  |................|
00000020  00 00 00 00 00 00 00 00  ff ff 55 12 00 00 00 3c  |..........U....<|
00000030  00 00 00 01 00 00 00 02  00 00 00 00 00 00 00 00  |................|

2026-10-06 20:50:2866.132.172.225to 17186/udpUnrecognisedUS

· ·UUUU·U·<·

payload bytes

00000000  1a 09 fa ba 00 00 00 00  00 00 00 02 55 55 55 55  |............UUUU|
00000010  00 00 00 01 00 00 00 01  00 00 00 00 00 00 00 00  |................|
00000020  00 00 00 00 00 00 00 00  ff ff 55 12 00 00 00 3c  |..........U....<|
00000030  00 00 00 01 00 00 00 02  00 00 00 00 00 00 00 00  |................|

2026-10-06 16:26:48199.45.154.182to 17186/udpUnrecognisedUS

· ·UUUU·U·<·

payload bytes

00000000  1a 09 fa ba 00 00 00 00  00 00 00 02 55 55 55 55  |............UUUU|
00000010  00 00 00 01 00 00 00 01  00 00 00 00 00 00 00 00  |................|
00000020  00 00 00 00 00 00 00 00  ff ff 55 12 00 00 00 3c  |..........U....<|
00000030  00 00 00 01 00 00 00 02  00 00 00 00 00 00 00 00  |................|

2026-10-06 15:35:5966.132.186.207to 17186/udpUnrecognisedUS

· ·UUUU·U·<·

payload bytes

00000000  1a 09 fa ba 00 00 00 00  00 00 00 02 55 55 55 55  |............UUUU|
00000010  00 00 00 01 00 00 00 01  00 00 00 00 00 00 00 00  |................|
00000020  00 00 00 00 00 00 00 00  ff ff 55 12 00 00 00 3c  |..........U....<|
00000030  00 00 00 01 00 00 00 02  00 00 00 00 00 00 00 00  |................|

2026-10-06 05:55:5466.132.186.219to 17186/udpDNSUS

· ·UUUU·U·<·

payload bytes

00000000  1a 09 fa ba 00 00 00 00  00 00 00 02 55 55 55 55  |............UUUU|
00000010  00 00 00 01 00 00 00 01  00 00 00 00 00 00 00 00  |................|
00000020  00 00 00 00 00 00 00 00  ff ff 55 12 00 00 00 3c  |..........U....<|
00000030  00 00 00 01 00 00 00 02  00 00 00 00 00 00 00 00  |................|