Port 503
HoneyLabs honeypots recorded 212 probes against destination port 503 from 43 distinct source IP addresses in the last 7 days.
First observed 2026-08-13 21:06:11, most recently 2026-08-20 17:39:20 (UTC).
Most active source addresses
| Source IP | Probes | Network | Country |
|---|---|---|---|
| 80.82.77.33 | 15 | IP Volume inc | NL |
| 5.255.98.120 | 12 | The Infrastructure Group B.V. | NL |
| 66.132.172.141 | 9 | Censys, Inc. | US |
| 66.132.172.33 | 9 | Censys, Inc. | US |
| 167.94.146.50 | 9 | Censys, Inc. | US |
| 66.132.172.37 | 9 | Censys, Inc. | US |
| 66.132.186.184 | 9 | Censys, Inc. | US |
| 199.45.155.98 | 9 | Censys, Inc. | US |
Networks it comes from
| ASN | Organisation | Probes | Source IPs |
|---|---|---|---|
| AS398324 | Censys, Inc. | 71 | 9 |
| AS398705 | Censys, Inc. | 36 | 4 |
| AS398722 | Censys, Inc. | 36 | 4 |
| AS202425 | IP Volume inc | 15 | 1 |
| AS60404 | The Infrastructure Group B.V. | 12 | 1 |
| AS213412 | ONYPHE SAS | 8 | 8 |
Where it comes from
| Country | Probes |
|---|---|
| United States | 160 |
| The Netherlands | 27 |
| Portugal | 6 |
| Croatia | 6 |
| United Kingdom | 5 |
| China | 4 |
Client strings seen on this port
| User agent | Probes |
|---|---|
| Mozilla/5.0 (compatible; CensysInspect/1.1; +https://about.censys.io/) | 93 |
| Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:134.0) Gecko/20100101 Firefox/134.0 | 8 |
| Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2228.0 Safari/537.36 | 4 |
| Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.5005.63 Safari/537.36 | 4 |
| python-requests/2.32.5 | 3 |
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