| IP: | 207.180.140.74 |
| Country: | United States (US) |
| Region: | MA |
| City: | Waltham |
| Latitude: | 42.403 |
| Longitude: | -71.259 |
| Zip code: | 02451 |
| Area code: | 781 |
| Reverse DNS: | perphy03.p.subnet.rcn.com |
| Class A: | 207 |
| Class B: | 207.180 |
| Class C: | 207.180.140 |
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