Port 3400
HoneyLabs honeypots recorded 144 probes against destination port 3400 from 64 distinct source IP addresses in the last 7 days.
First observed 2026-11-01 09:33, most recently 2026-11-08 08:57 (UTC).
What the sensors show
The sources sat in 22 networks across 16 countries. No single address sent more than 13% of them. The largest source network was AS135377 (UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED), with 19% of the probes from 4 addresses. 1 of the 25 busiest addresses is a recognised research scanner.
Most active source addresses
| Source IP | Probes | Network | Country |
|---|---|---|---|
| 31.56.20.123 | 18 | BreezeHost | US |
| 80.66.83.43 | 11 | Bashinskii Vadim Ruslanovich | RU |
| 193.29.13.199 | 9 | Bunea TELECOM SRL | RO |
| 118.194.236.134 | 7 | UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED | JP |
| 165.154.58.108 | 7 | UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED | PH |
| 101.36.117.15 | 7 | UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED | HK |
| 152.32.156.117 | 7 | UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED | IN |
| 98.188.247.7 | 5 | Cox Communications Inc. | US |
Networks it comes from
| ASN | Organisation | Probes | Source IPs |
|---|---|---|---|
| AS135377 | UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED | 28 | 4 |
| AS400810 | BreezeHost | 18 | 1 |
| AS396982 | Google LLC | 17 | 15 |
| AS45102 | Alibaba (US) Technology Co., Ltd. | 14 | 9 |
| AS216473 | Bashinskii Vadim Ruslanovich | 13 | 2 |
| AS213412 | ONYPHE SAS | 12 | 12 |
Where it comes from
| Country | Probes |
|---|---|
| United States | 48 |
| Russia | 16 |
| Japan | 11 |
| United Kingdom | 10 |
| Romania | 10 |
| China | 8 |
Client strings seen on this port
| User agent | Probes |
|---|---|
| Hello from Palo Alto Networks, find out more about our scans in https://docs-cortex.paloaltonetworks.com/r/1/Cortex-Xpanse/Scanning-activity | 17 |
| Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36 Edg/120.0.0.0 | 16 |
| Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36 | 11 |
| Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:134.0) Gecko/20100101 Firefox/134.0 | 8 |
| curl/7.74.0 | 5 |
Port report
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