| IP: | 128.17.135.253 |
| Country: | United States (US) |
| Region: | MA |
| City: | Cambridge |
| Latitude: | 42.3741 |
| Longitude: | -71.1072 |
| Zip code: | 02238 |
| Area code: | 617 |
| Reverse DNS: | vx253.mta.exacttarget.com |
| Class A: | 128 |
| Class B: | 128.17 |
| Class C: | 128.17.135 |
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