Port 503
HoneyLabs honeypots recorded 244 probes against destination port 503 from 53 distinct source IP addresses in the last 7 days.
First observed 2026-10-17 02:58:05.727000, most recently 2026-10-23 21:22:46.395000 (UTC).
Most active source addresses
| Source IP | Probes | Network | Country |
|---|---|---|---|
| 167.94.146.55 | 9 | Censys, Inc. | US |
| 66.132.159.28 | 9 | Censys, Inc. | US |
| 66.132.186.193 | 9 | Censys, Inc. | US |
| 167.94.146.57 | 9 | Censys, Inc. | US |
| 167.94.146.54 | 9 | Censys, Inc. | US |
| 66.132.172.202 | 9 | Censys, Inc. | US |
| 66.132.186.197 | 9 | Censys, Inc. | US |
| 66.132.195.92 | 9 | Censys, Inc. | US |
Networks it comes from
| ASN | Organisation | Probes | Source IPs |
|---|---|---|---|
| AS398324 | Censys, Inc. | 145 | 17 |
| AS398705 | Censys, Inc. | 36 | 4 |
| AS212835 | Shesternin Vladimir Anatolievich | 22 | 9 |
| AS45102 | Alibaba (US) Technology Co., Ltd. | 8 | 2 |
| AS213412 | ONYPHE SAS | 8 | 8 |
| AS135377 | UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED | 6 | 2 |
Where it comes from
| Country | Probes |
|---|---|
| United States | 198 |
| Russia | 22 |
| Singapore | 8 |
| Portugal | 6 |
| The Netherlands | 5 |
| Belgium | 3 |
Client strings seen on this port
| User agent | Probes |
|---|---|
| Mozilla/5.0 (compatible; CensysInspect/1.1; +https://about.censys.io/) | 118 |
| Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/140.0.0.0 Safari/537.36 | 22 |
| Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:134.0) Gecko/20100101 Firefox/134.0 | 8 |
| curl/7.29.0 | 4 |
| python-requests/2.34.2 | 3 |
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