The IP address 21.71.23 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 | arin |
| Last update | 07/07/2017 |

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | US | United States | - | Columbus | 39.9664 | -83.0128 | 2017-07-07 |
| MaxMind | US | United States | - | - | 37.751 | -97.822 | 2017-07-07 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.71.23.0 | 356980480 | 0 |
| 21.71.23.1 | 356980481 | 0 |
| 21.71.23.2 | 356980482 | 0 |
| 21.71.23.3 | 356980483 | 0 |
| 21.71.23.4 | 356980484 | 0 |
| 21.71.23.5 | 356980485 | 0 |
| 21.71.23.6 | 356980486 | 0 |
| 21.71.23.7 | 356980487 | 0 |
| 21.71.23.8 | 356980488 | 0 |
| 21.71.23.9 | 356980489 | 0 |
| 21.71.23.10 | 356980490 | 0 |
| 21.71.23.11 | 356980491 | 0 |
| 21.71.23.12 | 356980492 | 0 |
| 21.71.23.13 | 356980493 | 0 |
| 21.71.23.14 | 356980494 | 0 |
| 21.71.23.15 | 356980495 | 0 |
| 21.71.23.16 | 356980496 | 0 |
| 21.71.23.17 | 356980497 | 0 |
| 21.71.23.18 | 356980498 | 0 |
| 21.71.23.19 | 356980499 | 0 |
| 21.71.23.20 | 356980500 | 0 |
| 21.71.23.21 | 356980501 | 0 |
| 21.71.23.22 | 356980502 | 0 |
| 21.71.23.23 | 356980503 | 0 |
| 21.71.23.24 | 356980504 | 0 |
| 21.71.23.25 | 356980505 | 0 |
| 21.71.23.26 | 356980506 | 0 |
| 21.71.23.27 | 356980507 | 0 |
| 21.71.23.28 | 356980508 | 0 |
| 21.71.23.29 | 356980509 | 0 |
| 21.71.23.30 | 356980510 | 0 |
| 21.71.23.31 | 356980511 | 0 |
| 21.71.23.32 | 356980512 | 0 |
| 21.71.23.33 | 356980513 | 0 |
| 21.71.23.34 | 356980514 | 0 |
| 21.71.23.35 | 356980515 | 0 |
| 21.71.23.36 | 356980516 | 0 |
| 21.71.23.37 | 356980517 | 0 |
| 21.71.23.38 | 356980518 | 0 |
| 21.71.23.39 | 356980519 | 0 |
| 21.71.23.40 | 356980520 | 0 |
| 21.71.23.41 | 356980521 | 0 |
| 21.71.23.42 | 356980522 | 0 |
| 21.71.23.43 | 356980523 | 0 |
| 21.71.23.44 | 356980524 | 0 |
| 21.71.23.45 | 356980525 | 0 |
| 21.71.23.46 | 356980526 | 0 |
| 21.71.23.47 | 356980527 | 0 |
| 21.71.23.48 | 356980528 | 0 |
| 21.71.23.49 | 356980529 | 0 |
| 21.71.23.50 | 356980530 | 0 |
| 21.71.23.51 | 356980531 | 0 |
| 21.71.23.52 | 356980532 | 0 |
| 21.71.23.53 | 356980533 | 0 |
| 21.71.23.54 | 356980534 | 0 |
| 21.71.23.55 | 356980535 | 0 |
| 21.71.23.56 | 356980536 | 0 |
| 21.71.23.57 | 356980537 | 0 |
| 21.71.23.58 | 356980538 | 0 |
| 21.71.23.59 | 356980539 | 0 |
| 21.71.23.60 | 356980540 | 0 |
| 21.71.23.61 | 356980541 | 0 |
| 21.71.23.62 | 356980542 | 0 |
| 21.71.23.63 | 356980543 | 0 |
| 21.71.23.64 | 356980544 | 0 |
| 21.71.23.65 | 356980545 | 0 |
| 21.71.23.66 | 356980546 | 0 |
| 21.71.23.67 | 356980547 | 0 |
| 21.71.23.68 | 356980548 | 0 |
| 21.71.23.69 | 356980549 | 0 |
| 21.71.23.70 | 356980550 | 0 |
| 21.71.23.71 | 356980551 | 0 |
| 21.71.23.72 | 356980552 | 0 |
| 21.71.23.73 | 356980553 | 0 |
| 21.71.23.74 | 356980554 | 0 |
| 21.71.23.75 | 356980555 | 0 |
| 21.71.23.76 | 356980556 | 0 |
| 21.71.23.77 | 356980557 | 0 |
| 21.71.23.78 | 356980558 | 0 |
| 21.71.23.79 | 356980559 | 0 |
| 21.71.23.80 | 356980560 | 0 |
| 21.71.23.81 | 356980561 | 0 |
| 21.71.23.82 | 356980562 | 0 |
| 21.71.23.83 | 356980563 | 0 |
| 21.71.23.84 | 356980564 | 0 |
| 21.71.23.85 | 356980565 | 0 |