The IP address 21.71.31 is provided by China Education and Research Network Center, it's belong to the CDIR (Classless Inter-Domain Routing) 22.30.204.0/23 (range 22.30.204.0 to 22.30.205.255). The autonomous system number (ASN) is 4538.
| ASN | 4538 |
| IP starting by | 22.30.204.0 |
| IP ending by | 22.30.205.255 |
| ASN Name | China Education and Research Network Center |
| CDIR | 22.30.204.0/23 |
| Numerical IP | |
| Registry | |
| Last update | 25/01/2018 |

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | US | United States | - | Columbus | 39.9664 | -83.0128 | 2018-01-25 |
| MaxMind | US | United States | - | - | 37.751 | -97.822 | 2018-01-25 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.71.31.0 | 356982528 | 0 |
| 21.71.31.1 | 356982529 | 0 |
| 21.71.31.2 | 356982530 | 0 |
| 21.71.31.3 | 356982531 | 0 |
| 21.71.31.4 | 356982532 | 0 |
| 21.71.31.5 | 356982533 | 0 |
| 21.71.31.6 | 356982534 | 0 |
| 21.71.31.7 | 356982535 | 0 |
| 21.71.31.8 | 356982536 | 0 |
| 21.71.31.9 | 356982537 | 0 |
| 21.71.31.10 | 356982538 | 0 |
| 21.71.31.11 | 356982539 | 0 |
| 21.71.31.12 | 356982540 | 0 |
| 21.71.31.13 | 356982541 | 0 |
| 21.71.31.14 | 356982542 | 0 |
| 21.71.31.15 | 356982543 | 0 |
| 21.71.31.16 | 356982544 | 0 |
| 21.71.31.17 | 356982545 | 0 |
| 21.71.31.18 | 356982546 | 0 |
| 21.71.31.19 | 356982547 | 0 |
| 21.71.31.20 | 356982548 | 0 |
| 21.71.31.21 | 356982549 | 0 |
| 21.71.31.22 | 356982550 | 0 |
| 21.71.31.23 | 356982551 | 0 |
| 21.71.31.24 | 356982552 | 0 |
| 21.71.31.25 | 356982553 | 0 |
| 21.71.31.26 | 356982554 | 0 |
| 21.71.31.27 | 356982555 | 0 |
| 21.71.31.28 | 356982556 | 0 |
| 21.71.31.29 | 356982557 | 0 |
| 21.71.31.30 | 356982558 | 0 |
| 21.71.31.31 | 356982559 | 0 |
| 21.71.31.32 | 356982560 | 0 |
| 21.71.31.33 | 356982561 | 0 |
| 21.71.31.34 | 356982562 | 0 |
| 21.71.31.35 | 356982563 | 0 |
| 21.71.31.36 | 356982564 | 0 |
| 21.71.31.37 | 356982565 | 0 |
| 21.71.31.38 | 356982566 | 0 |
| 21.71.31.39 | 356982567 | 0 |
| 21.71.31.40 | 356982568 | 0 |
| 21.71.31.41 | 356982569 | 0 |
| 21.71.31.42 | 356982570 | 0 |
| 21.71.31.43 | 356982571 | 0 |
| 21.71.31.44 | 356982572 | 0 |
| 21.71.31.45 | 356982573 | 0 |
| 21.71.31.46 | 356982574 | 0 |
| 21.71.31.47 | 356982575 | 0 |
| 21.71.31.48 | 356982576 | 0 |
| 21.71.31.49 | 356982577 | 0 |
| 21.71.31.50 | 356982578 | 0 |
| 21.71.31.51 | 356982579 | 0 |
| 21.71.31.52 | 356982580 | 0 |
| 21.71.31.53 | 356982581 | 0 |
| 21.71.31.54 | 356982582 | 0 |
| 21.71.31.55 | 356982583 | 0 |
| 21.71.31.56 | 356982584 | 0 |
| 21.71.31.57 | 356982585 | 0 |
| 21.71.31.58 | 356982586 | 0 |
| 21.71.31.59 | 356982587 | 0 |
| 21.71.31.60 | 356982588 | 0 |
| 21.71.31.61 | 356982589 | 0 |
| 21.71.31.62 | 356982590 | 0 |
| 21.71.31.63 | 356982591 | 0 |
| 21.71.31.64 | 356982592 | 0 |
| 21.71.31.65 | 356982593 | 0 |
| 21.71.31.66 | 356982594 | 0 |
| 21.71.31.67 | 356982595 | 0 |
| 21.71.31.68 | 356982596 | 0 |
| 21.71.31.69 | 356982597 | 0 |
| 21.71.31.70 | 356982598 | 0 |
| 21.71.31.71 | 356982599 | 0 |
| 21.71.31.72 | 356982600 | 0 |
| 21.71.31.73 | 356982601 | 0 |
| 21.71.31.74 | 356982602 | 0 |
| 21.71.31.75 | 356982603 | 0 |
| 21.71.31.76 | 356982604 | 0 |
| 21.71.31.77 | 356982605 | 0 |
| 21.71.31.78 | 356982606 | 0 |
| 21.71.31.79 | 356982607 | 0 |
| 21.71.31.80 | 356982608 | 0 |
| 21.71.31.81 | 356982609 | 0 |
| 21.71.31.82 | 356982610 | 0 |
| 21.71.31.83 | 356982611 | 0 |
| 21.71.31.84 | 356982612 | 0 |
| 21.71.31.85 | 356982613 | 0 |