Port 137 (NetBIOS)
HoneyLabs honeypots recorded 768 probes against destination port 137 (NetBIOS) from 77 distinct source IP addresses in the last 7 days.
First observed 2026-09-12 13:03:37, most recently 2026-09-19 11:20:30 (UTC).
Most active source addresses
| Source IP | Probes | Network | Country |
|---|---|---|---|
| 185.228.82.243 | 206 | MC-Node | NL |
| 89.248.172.33 | 133 | IP Volume inc | NL |
| 93.174.93.12 | 116 | IP Volume inc | NL |
| 138.197.206.208 | 46 | DigitalOcean, LLC | US |
| 159.223.134.14 | 46 | DigitalOcean, LLC | US |
| 66.228.32.20 | 46 | Akamai Connected Cloud | US |
| 80.82.77.202 | 30 | IP Volume inc | NL |
| 134.168.249.77 | 11 | UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED | HK |
Networks it comes from
| ASN | Organisation | Probes | Source IPs |
|---|---|---|---|
| AS202425 | IP Volume inc | 279 | 3 |
| AS211750 | MC-Node | 206 | 1 |
| AS14061 | DigitalOcean, LLC | 94 | 3 |
| AS63949 | Akamai Connected Cloud | 48 | 3 |
| AS135377 | UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED | 33 | 6 |
| AS25369 | Hydra Communications Ltd | 32 | 32 |
Where it comes from
| Country | Probes |
|---|---|
| The Netherlands | 487 |
| United States | 178 |
| Hong Kong | 29 |
| United Kingdom | 28 |
| Germany | 21 |
| South Africa | 10 |
Client strings seen on this port
| User agent | Probes |
|---|---|
| Python/3.10 aiohttp/3.8.4 | 279 |
| mcnode-exporter/1.0 | 136 |
| Mozilla/5.0 (compatible; Infrawatch/1.0; +https://infrawat.ch/) | 28 |
| Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.112 Safari/537.36 | 12 |
| Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36 Edg/120.0.0.0 | 12 |
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