Port report
Port 503
7-day honeypot probe activity targeting destination port 503. First seen 2026-06-29, most recent 2026-07-06 11:49.
219
Events 7d
34
Source IPs
12
Source ASNs
9
Countries
Top source ASNs
Top source countries
Top source IPs hitting port 503
- 66.132.172.13218 eventsKnown scanner USseen Jul 5
- 66.132.186.18418 eventsKnown scanner USseen Jul 3
- 66.132.195.939 eventsKnown scanner USseen Jul 3
- 66.132.195.789 eventsKnown scanner USseen Jul 1
- 167.94.146.489 eventsKnown scanner USseen Jul 2
- 199.45.154.1429 eventsKnown scanner USseen Jul 6
- 199.45.155.749 eventsKnown scanner USseen Jul 2
- 66.132.195.879 eventsKnown scanner USseen Jul 3
- 66.132.224.2349 eventsKnown scanner USseen Jun 30
- 167.94.146.639 eventsKnown scanner USseen Jul 5
- 199.45.155.1049 eventsKnown scanner USseen Jun 29
- 66.132.172.1409 eventsKnown scanner USseen Jul 5
- 66.132.172.1379 eventsKnown scanner USseen Jul 4
- 199.45.155.729 eventsKnown scanner USseen Jul 4
- 66.132.172.1319 eventsKnown scanner USseen Jul 6
- 167.94.146.559 eventsKnown scanner USseen Jul 4
- 199.45.155.859 eventsKnown scanner USseen Jul 5
- 66.132.195.518 eventsKnown scanner USseen Jul 1
- 134.209.200.2256 eventsProbing NL· AS14061 DigitalOcean, LLCseen Jul 5
- 71.6.135.1315 eventsKnown scanner USseen Jun 30
- 47.237.122.434 eventsProbing SG· AS45102 Alibaba (US) Technology Co., Ltd.seen Jun 30
- 47.237.186.1314 eventsProbing SG· AS45102 Alibaba (US) Technology Co., Ltd.seen Jul 5
- 115.231.78.114 eventsProbing CN· AS58461 CT-HangZhou-IDCseen Jul 5
- 109.105.209.123 eventsKnown scanner PTseen Jun 30
- 45.156.129.953 eventsKnown scanner PTseen Jun 30
Top user-agents on port 503
- Mozilla/5.0 (compatible; CensysInspect/1.1; +https://about.censys.io/)119
- Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/140.0.0.0 Safari/537.365
- Mozilla/5.0 (compatible; ModatScanner/1.2; +https://modat.io/)3
- fasthttp2
- Mozilla/5.0 zgrab/0.x2
- Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/76.0.3809.132 Safari/537.362
- Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.5 Safari/605.1.151
- Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2228.0 Safari/537.361
- Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:142.0) Gecko/20100101 Firefox/142.01
- Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.5005.63 Safari/537.361
JSON: /api/port/503. CSV: /api/port/503?format=csv.