Port 21255
HoneyLabs honeypots recorded 46 probes against destination port 21255 from 17 distinct source IP addresses in the last 7 days.
First observed 2026-11-09 03:12, most recently 2026-11-14 06:08 (UTC).
What the sensors show
The sources sat in 4 networks across 4 countries. One address, 86.54.31.44, sent 43% of them. The largest source network was AS12989 (Black HOST Ltd), with 65% of the probes from 2 addresses. 11 of the 17 busiest addresses are recognised research scanners.
Most active source addresses
| Source IP | Probes | Network | Country |
|---|---|---|---|
| 86.54.31.44 | 20 | Black HOST Ltd | CA |
| 86.54.31.36 | 10 | Black HOST Ltd | CA |
| 34.38.10.57 | 2 | Google LLC | BE |
| 35.187.20.200 | 1 | Google LLC | BE |
| 195.184.76.136 | 1 | ONYPHE SAS | US |
| 91.230.168.174 | 1 | ONYPHE SAS | US |
| 195.184.76.23 | 1 | ONYPHE SAS | US |
| 91.230.168.246 | 1 | ONYPHE SAS | US |
Networks it comes from
| ASN | Organisation | Probes | Source IPs |
|---|---|---|---|
| AS12989 | Black HOST Ltd | 30 | 2 |
| AS213412 | ONYPHE SAS | 8 | 8 |
| AS396982 | Google LLC | 7 | 6 |
| AS209334 | Modat B.V. | 1 | 1 |
Where it comes from
| Country | Probes |
|---|---|
| Canada | 30 |
| United States | 8 |
| Belgium | 7 |
| France | 1 |
Client strings seen on this port
| User agent | Probes |
|---|---|
| Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2228.0 Safari/537.36 | 15 |
| Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.5005.63 Safari/537.36 | 15 |
| Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:134.0) Gecko/20100101 Firefox/134.0 | 8 |
| python-requests/2.34.2 | 7 |
Port report
Port report
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