Les adresses IP débutant par 208.21.56 sont fournies par Sprint, elles appartiennent au CIDR (Classless Inter-Domain Routing) 208.0.0.0/11, le bloc IP comprant les adresses de 208.0.0.0 à 208.31.255.255). Le numéro de système autonome (ASN) est 1239.
| ASN | 1239 |
| IP commençant par | 208.0.0.0 |
| IP se terminant par | 208.31.255.255 |
| Nom ASN | Sprint |
| CDIR | 208.0.0.0/11 |
| IP numérique | |
| Registe | arin |
| Dernière mise à jour | 06/09/2017 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | US | États-Unis | - | Kansas City | 39,0559 | -94,5927 | 2017-09-06 |
| MaxMind | US | États-Unis | - | - | 37,751 | -97,822 | 2017-09-06 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 208.21.56.0 | 3491051520 | 0 |
| 208.21.56.1 | 3491051521 | 0 |
| 208.21.56.2 | 3491051522 | 0 |
| 208.21.56.3 | 3491051523 | 0 |
| 208.21.56.4 | 3491051524 | 0 |
| 208.21.56.5 | 3491051525 | 0 |
| 208.21.56.6 | 3491051526 | 0 |
| 208.21.56.7 | 3491051527 | 0 |
| 208.21.56.8 | 3491051528 | 0 |
| 208.21.56.9 | 3491051529 | 0 |
| 208.21.56.10 | 3491051530 | 0 |
| 208.21.56.11 | 3491051531 | 0 |
| 208.21.56.12 | 3491051532 | 0 |
| 208.21.56.13 | 3491051533 | 0 |
| 208.21.56.14 | 3491051534 | 0 |
| 208.21.56.15 | 3491051535 | 0 |
| 208.21.56.16 | 3491051536 | 0 |
| 208.21.56.17 | 3491051537 | 0 |
| 208.21.56.18 | 3491051538 | 0 |
| 208.21.56.19 | 3491051539 | 0 |
| 208.21.56.20 | 3491051540 | 0 |
| 208.21.56.21 | 3491051541 | 0 |
| 208.21.56.22 | 3491051542 | 0 |
| 208.21.56.23 | 3491051543 | 0 |
| 208.21.56.24 | 3491051544 | 0 |
| 208.21.56.25 | 3491051545 | 0 |
| 208.21.56.26 | 3491051546 | 0 |
| 208.21.56.27 | 3491051547 | 0 |
| 208.21.56.28 | 3491051548 | 0 |
| 208.21.56.29 | 3491051549 | 0 |
| 208.21.56.30 | 3491051550 | 0 |
| 208.21.56.31 | 3491051551 | 0 |
| 208.21.56.32 | 3491051552 | 0 |
| 208.21.56.33 | 3491051553 | 0 |
| 208.21.56.34 | 3491051554 | 0 |
| 208.21.56.35 | 3491051555 | 0 |
| 208.21.56.36 | 3491051556 | 0 |
| 208.21.56.37 | 3491051557 | 0 |
| 208.21.56.38 | 3491051558 | 0 |
| 208.21.56.39 | 3491051559 | 0 |
| 208.21.56.40 | 3491051560 | 0 |
| 208.21.56.41 | 3491051561 | 0 |
| 208.21.56.42 | 3491051562 | 0 |
| 208.21.56.43 | 3491051563 | 0 |
| 208.21.56.44 | 3491051564 | 0 |
| 208.21.56.45 | 3491051565 | 0 |
| 208.21.56.46 | 3491051566 | 0 |
| 208.21.56.47 | 3491051567 | 0 |
| 208.21.56.48 | 3491051568 | 0 |
| 208.21.56.49 | 3491051569 | 0 |
| 208.21.56.50 | 3491051570 | 0 |
| 208.21.56.51 | 3491051571 | 0 |
| 208.21.56.52 | 3491051572 | 0 |
| 208.21.56.53 | 3491051573 | 0 |
| 208.21.56.54 | 3491051574 | 0 |
| 208.21.56.55 | 3491051575 | 0 |
| 208.21.56.56 | 3491051576 | 0 |
| 208.21.56.57 | 3491051577 | 0 |
| 208.21.56.58 | 3491051578 | 0 |
| 208.21.56.59 | 3491051579 | 0 |
| 208.21.56.60 | 3491051580 | 0 |
| 208.21.56.61 | 3491051581 | 0 |
| 208.21.56.62 | 3491051582 | 0 |
| 208.21.56.63 | 3491051583 | 0 |
| 208.21.56.64 | 3491051584 | 0 |
| 208.21.56.65 | 3491051585 | 0 |
| 208.21.56.66 | 3491051586 | 0 |
| 208.21.56.67 | 3491051587 | 0 |
| 208.21.56.68 | 3491051588 | 0 |
| 208.21.56.69 | 3491051589 | 0 |
| 208.21.56.70 | 3491051590 | 0 |
| 208.21.56.71 | 3491051591 | 0 |
| 208.21.56.72 | 3491051592 | 0 |
| 208.21.56.73 | 3491051593 | 0 |
| 208.21.56.74 | 3491051594 | 0 |
| 208.21.56.75 | 3491051595 | 0 |
| 208.21.56.76 | 3491051596 | 0 |
| 208.21.56.77 | 3491051597 | 0 |
| 208.21.56.78 | 3491051598 | 0 |
| 208.21.56.79 | 3491051599 | 0 |
| 208.21.56.80 | 3491051600 | 0 |
| 208.21.56.81 | 3491051601 | 0 |
| 208.21.56.82 | 3491051602 | 0 |
| 208.21.56.83 | 3491051603 | 0 |
| 208.21.56.84 | 3491051604 | 0 |
| 208.21.56.85 | 3491051605 | 0 |