The IP address 3.81.72 is provided by Level 3 Communications, Inc., it's belong to the CDIR (Classless Inter-Domain Routing) 4.0.0.0/8 (range 4.0.0.0 to 4.255.255.255). The autonomous system number (ASN) is 3356.
| ASN | 3356 |
| IP starting by | 4.0.0.0 |
| IP ending by | 4.255.255.255 |
| ASN Name | Level 3 Communications, Inc. |
| CDIR | 4.0.0.0/8 |
| Numerical IP | |
| Registry | arin |
| Last update | 06/08/2017 |

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | US | United States | - | Fairfield | 41.2184 | -73.2517 | 2017-07-03 |
| MaxMind | US | United States | - | Fairfield | 41.1412 | -73.2637 | 2017-07-03 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 3.81.72.0 | 55658496 | 0 |
| 3.81.72.1 | 55658497 | 0 |
| 3.81.72.2 | 55658498 | 0 |
| 3.81.72.3 | 55658499 | 0 |
| 3.81.72.4 | 55658500 | 0 |
| 3.81.72.5 | 55658501 | 0 |
| 3.81.72.6 | 55658502 | 0 |
| 3.81.72.7 | 55658503 | 0 |
| 3.81.72.8 | 55658504 | 0 |
| 3.81.72.9 | 55658505 | 0 |
| 3.81.72.10 | 55658506 | 0 |
| 3.81.72.11 | 55658507 | 0 |
| 3.81.72.12 | 55658508 | 0 |
| 3.81.72.13 | 55658509 | 0 |
| 3.81.72.14 | 55658510 | 0 |
| 3.81.72.15 | 55658511 | 0 |
| 3.81.72.16 | 55658512 | 0 |
| 3.81.72.17 | 55658513 | 0 |
| 3.81.72.18 | 55658514 | 0 |
| 3.81.72.19 | 55658515 | 0 |
| 3.81.72.20 | 55658516 | 0 |
| 3.81.72.21 | 55658517 | 0 |
| 3.81.72.22 | 55658518 | 0 |
| 3.81.72.23 | 55658519 | 0 |
| 3.81.72.24 | 55658520 | 0 |
| 3.81.72.25 | 55658521 | 0 |
| 3.81.72.26 | 55658522 | 0 |
| 3.81.72.27 | 55658523 | 0 |
| 3.81.72.28 | 55658524 | 0 |
| 3.81.72.29 | 55658525 | 0 |
| 3.81.72.30 | 55658526 | 0 |
| 3.81.72.31 | 55658527 | 0 |
| 3.81.72.32 | 55658528 | 0 |
| 3.81.72.33 | 55658529 | 0 |
| 3.81.72.34 | 55658530 | 0 |
| 3.81.72.35 | 55658531 | 0 |
| 3.81.72.36 | 55658532 | 0 |
| 3.81.72.37 | 55658533 | 0 |
| 3.81.72.38 | 55658534 | 0 |
| 3.81.72.39 | 55658535 | 0 |
| 3.81.72.40 | 55658536 | 0 |
| 3.81.72.41 | 55658537 | 0 |
| 3.81.72.42 | 55658538 | 0 |
| 3.81.72.43 | 55658539 | 0 |
| 3.81.72.44 | 55658540 | 0 |
| 3.81.72.45 | 55658541 | 0 |
| 3.81.72.46 | 55658542 | 0 |
| 3.81.72.47 | 55658543 | 0 |
| 3.81.72.48 | 55658544 | 0 |
| 3.81.72.49 | 55658545 | 0 |
| 3.81.72.50 | 55658546 | 0 |
| 3.81.72.51 | 55658547 | 0 |
| 3.81.72.52 | 55658548 | 0 |
| 3.81.72.53 | 55658549 | 0 |
| 3.81.72.54 | 55658550 | 0 |
| 3.81.72.55 | 55658551 | 0 |
| 3.81.72.56 | 55658552 | 0 |
| 3.81.72.57 | 55658553 | 0 |
| 3.81.72.58 | 55658554 | 0 |
| 3.81.72.59 | 55658555 | 0 |
| 3.81.72.60 | 55658556 | 0 |
| 3.81.72.61 | 55658557 | 0 |
| 3.81.72.62 | 55658558 | 0 |
| 3.81.72.63 | 55658559 | 0 |
| 3.81.72.64 | 55658560 | 0 |
| 3.81.72.65 | 55658561 | 0 |
| 3.81.72.66 | 55658562 | 0 |
| 3.81.72.67 | 55658563 | 0 |
| 3.81.72.68 | 55658564 | 0 |
| 3.81.72.69 | 55658565 | 0 |
| 3.81.72.70 | 55658566 | 0 |
| 3.81.72.71 | 55658567 | 0 |
| 3.81.72.72 | 55658568 | 0 |
| 3.81.72.73 | 55658569 | 0 |
| 3.81.72.74 | 55658570 | 0 |
| 3.81.72.75 | 55658571 | 0 |
| 3.81.72.76 | 55658572 | 0 |
| 3.81.72.77 | 55658573 | 0 |
| 3.81.72.78 | 55658574 | 0 |
| 3.81.72.79 | 55658575 | 0 |
| 3.81.72.80 | 55658576 | 0 |
| 3.81.72.81 | 55658577 | 0 |
| 3.81.72.82 | 55658578 | 0 |
| 3.81.72.83 | 55658579 | 0 |
| 3.81.72.84 | 55658580 | 0 |
| 3.81.72.85 | 55658581 | 0 |