Port 503
HoneyLabs honeypots recorded 202 probes against destination port 503 from 42 distinct source IP addresses in the last 7 days.
First observed 2026-08-29 11:16:08, most recently 2026-09-05 03:49:11 (UTC).
Most active source addresses
| Source IP | Probes | Network | Country |
|---|---|---|---|
| 66.240.192.138 | 15 | CariNet, Inc. | US |
| 66.132.195.39 | 9 | Censys, Inc. | US |
| 66.132.172.206 | 9 | Censys, Inc. | US |
| 66.132.172.208 | 9 | Censys, Inc. | US |
| 167.94.146.55 | 9 | Censys, Inc. | US |
| 199.45.154.121 | 9 | Censys, Inc. | US |
| 167.94.146.62 | 9 | Censys, Inc. | US |
| 199.45.155.95 | 9 | Censys, Inc. | US |
Networks it comes from
| ASN | Organisation | Probes | Source IPs |
|---|---|---|---|
| AS398324 | Censys, Inc. | 57 | 9 |
| AS398705 | Censys, Inc. | 36 | 4 |
| AS398722 | Censys, Inc. | 35 | 4 |
| AS10439 | CariNet, Inc. | 15 | 1 |
| AS202425 | IP Volume inc | 10 | 2 |
| AS213412 | ONYPHE SAS | 8 | 8 |
Where it comes from
| Country | Probes |
|---|---|
| United States | 158 |
| Portugal | 12 |
| The Netherlands | 10 |
| China | 8 |
| Russia | 7 |
| Singapore | 6 |
Client strings seen on this port
| User agent | Probes |
|---|---|
| Mozilla/5.0 (compatible; CensysInspect/1.1; +https://about.censys.io/) | 83 |
| 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 | 5 |
| Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.5005.63 Safari/537.36 | 5 |
| Mozilla/5.0 zgrab/0.x | 3 |
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