UDP traffic

Datagrams matching port:2123 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.

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Datagrams

Source addresses

Networks

Countries

Destination ports

Traffic by type

Other services

45 datagrams from 37 sources

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

GTP-C 45

Latest GTP-C datagram, to 2123/udp

2·

payload bytes

00000000  32 01 00 04 00 00 00 00  00 00 00 00              |2...........|

Unrecognised

46 datagrams from 38 sources

Datagrams no decoder recognised. Their first bytes are kept.

Unrecognised 46

Latest Unrecognised datagram, to 2123/udp

·O#Kq·R·

payload bytes

00000000  e3 00 04 fa 00 01 00 00  00 01 00 00 00 00 00 00  |................|
00000010  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000020  00 00 00 00 00 00 00 00  c5 4f 23 4b 71 b1 52 f3  |.........O#Kq.R.|

Destination ports

2123/udp GTP-C91

Networks

AS6939 Hurricane Electric LLC from 38 sources42
AS213412 ONYPHE SAS from 6 sources8
AS10439 CariNet, Inc. from 4 sources7
AS50219 Valence Technology Co. from 2 sources6
AS21859 Zenlayer Inc from 5 sources6
AS45102 Alibaba (US) Technology Co., Ltd. from 3 sources6
AS396982 Google LLC from 4 sources4
AS202425 IP Volume inc from 1 source4
AS32475 Internap Holding LLC from 1 source3
AS211680 Sistemas Informaticos, S.A. from 1 source2

Countries

Source addresses (unverified)

Address	Network	Cc	Sends	Datagrams	Last seen (UTC)
185.242.226.166	AS202425 IP Volume inc	US	Unrecognised	4	2026-10-09 20:03
203.55.131.5	AS32475 Internap Holding LLC	US	GTP-C	3	2026-10-10 10:30
216.226.78.10	AS50219 Valence Technology Co.	US	GTP-C	3	2026-10-08 21:51
47.89.148.254	AS45102 Alibaba (US) Technology Co., Ltd.	US	Unrecognised	3	2026-10-09 12:55
194.164.107.5	AS50219 Valence Technology Co.	US	GTP-C	3	2026-10-06 12:32
71.6.134.228	AS10439 CariNet, Inc.	US	GTP-C	3	2026-10-08 14:26
74.82.47.61	AS6939 Hurricane Electric LLC	US	Unrecognised	2	2026-10-10 09:42
47.84.101.219	AS45102 Alibaba (US) Technology Co., Ltd.	SG	GTP-C	2	2026-10-06 07:39
91.231.89.90	AS213412 ONYPHE SAS	FR	Unrecognised	2	2026-10-08 05:18
65.49.1.56	AS6939 Hurricane Electric LLC	US	Unrecognised	2	2026-10-10 05:53
64.62.156.22	AS6939 Hurricane Electric LLC	US	GTP-C	2	2026-10-08 09:32
91.230.168.218	AS213412 ONYPHE SAS	US	Unrecognised	2	2026-10-08 05:07
71.6.134.235	AS10439 CariNet, Inc.	US	Unrecognised	2	2026-10-05 20:11
65.49.1.91	AS6939 Hurricane Electric LLC	US	GTP-C	2	2026-10-09 04:35
185.180.141.9	AS21859 Zenlayer Inc	PT	GTP-C	2	2026-10-09 08:15
45.156.129.85	AS211680 Sistemas Informaticos, S.A.	PT	GTP-C	2	2026-10-08 02:48
118.193.57.218	AS135377 UCLOUD INFORMATION TECHNOLOGY (HK) LIMIT	TH	GTP-C	1	2026-10-06 09:47
65.49.1.36	AS6939 Hurricane Electric LLC	US	GTP-C	1	2026-10-11 00:10
47.254.46.95	AS45102 Alibaba (US) Technology Co., Ltd.	US	GTP-C	1	2026-10-10 02:02
65.49.1.94	AS6939 Hurricane Electric LLC	US	Unrecognised	1	2026-10-07 09:44

Latest datagrams

2026-10-11 03:25:4465.49.20.85to 2123/udpGTP-CUS

2·

payload bytes

00000000  32 01 00 04 00 00 00 00  00 00 00 00              |2...........|

2026-10-11 00:46:5565.49.1.26to 2123/udpGTP-CUS

2·

payload bytes

00000000  32 01 00 04 00 00 00 00  00 00 00 00              |2...........|

2026-10-11 00:10:3865.49.1.36to 2123/udpGTP-CUS

2·

payload bytes

00000000  32 01 00 04 00 00 00 00  00 00 00 00              |2...........|

2026-10-10 20:44:57162.216.150.91to 2123/udpUnrecognisedUS

·O#Kq·R·

payload bytes

00000000  e3 00 04 fa 00 01 00 00  00 01 00 00 00 00 00 00  |................|
00000010  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000020  00 00 00 00 00 00 00 00  c5 4f 23 4b 71 b1 52 f3  |.........O#Kq.R.|

2026-10-10 17:33:42162.216.149.140to 2123/udpUnrecognisedUS

·O#Kq·R·

payload bytes

00000000  e3 00 04 fa 00 01 00 00  00 01 00 00 00 00 00 00  |................|
00000010  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000020  00 00 00 00 00 00 00 00  c5 4f 23 4b 71 b1 52 f3  |.........O#Kq.R.|

2026-10-10 10:30:53203.55.131.5to 2123/udpGTP-CUS

@·

payload bytes

00000000  40 01 00 04 ff 00 00 00                           |@.......|

2026-10-10 10:08:09203.55.131.5to 2123/udpGTP-CUS

2·=·

payload bytes

00000000  32 01 00 04 00 00 00 00  0c 3d 00 00              |2........=..|

2026-10-10 09:45:41203.55.131.5to 2123/udpUnrecognisedUS

·3133·

payload bytes

00000000  10 01 00 00 00 00 00 00  00 ff ff ff 33 31 33 33  |............3133|
00000010  00 00 00 00                                       |....|

2026-10-10 09:42:3274.82.47.61to 2123/udpUnrecognisedUS

@·

payload bytes

00000000  40 01 00 04 00 00 00 00  00 00 00 00              |@...........|

2026-10-10 09:23:2464.62.197.159to 2123/udpUnrecognisedUS

@·

payload bytes

00000000  40 01 00 04 00 00 00 00  00 00 00 00              |@...........|

2026-10-10 09:16:3964.62.156.67to 2123/udpUnrecognisedUS

@·

payload bytes

00000000  40 01 00 04 00 00 00 00  00 00 00 00              |@...........|

2026-10-10 07:30:5974.82.47.61to 2123/udpUnrecognisedUS

@·

payload bytes

00000000  40 01 00 04 00 00 00 00  00 00 00 00              |@...........|

2026-10-10 06:45:4864.62.156.32to 2123/udpGTP-CUS

2·

payload bytes

00000000  32 01 00 04 00 00 00 00  00 00 00 00              |2...........|

2026-10-10 05:53:5965.49.1.56to 2123/udpGTP-CUS

2·

payload bytes

00000000  32 01 00 04 00 00 00 00  00 00 00 00              |2...........|

2026-10-10 02:44:40185.226.197.29to 2123/udpGTP-CPT

@· ·

payload bytes

00000000  40 01 00 09 00 ab cd 00  03 00 01 00 00           |@............|