Port 5683 (CoAP)
HoneyLabs honeypots recorded 108 probes against destination port 5683 (CoAP) from 67 distinct source IP addresses in the last 7 days.
First observed 2026-11-08 16:31, most recently 2026-11-15 06:29 (UTC).
What the sensors show
The sources sat in 9 networks across 10 countries. No single address sent more than 6% of them. The largest source network was AS398324 (Censys, Inc.), with 31% of the probes from 33 addresses. 15 of the 25 busiest addresses are recognised research scanners.
Most active source addresses
| Source IP | Probes | Network | Country |
|---|---|---|---|
| 152.32.199.20 | 7 | UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED | BR |
| 118.194.236.118 | 7 | UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED | JP |
| 152.32.153.53 | 7 | UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED | ID |
| 165.154.172.108 | 7 | UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED | US |
| 146.190.221.240 | 6 | DigitalOcean, LLC | US |
| 147.182.221.50 | 6 | DigitalOcean, LLC | US |
| 188.166.92.125 | 5 | DigitalOcean, LLC | NL |
| 66.132.172.110 | 2 | Censys, Inc. | US |
Networks it comes from
| ASN | Organisation | Probes | Source IPs |
|---|---|---|---|
| AS398324 | Censys, Inc. | 34 | 33 |
| AS135377 | UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED | 28 | 4 |
| AS14061 | DigitalOcean, LLC | 17 | 3 |
| AS213412 | ONYPHE SAS | 14 | 14 |
| AS398705 | Censys, Inc. | 6 | 5 |
| AS396982 | Google LLC | 3 | 3 |
Where it comes from
| Country | Probes |
|---|---|
| United States | 72 |
| Indonesia | 7 |
| Brazil | 7 |
| Japan | 7 |
| The Netherlands | 5 |
| Romania | 3 |
Client strings seen on this port
| User agent | Probes |
|---|---|
| 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 (X11; Ubuntu; Linux x86_64; rv:134.0) Gecko/20100101 Firefox/134.0 | 14 |
| Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/140.0.0.0 Safari/537.36 | 11 |
| Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_0) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.56 Safari/535.11 | 4 |
| Hello from Palo Alto Networks, find out more about our scans in https://docs-cortex.paloaltonetworks.com/r/1/Cortex-Xpanse/Scanning-activity | 3 |
Port report
Port report
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