La dirección IP 128.231.4 es proporcionada por National Institutes of Health, que es propiedad de la CIDR (Classless Inter-Domain Routing) 128.231.0.0/16, IP entre 128.231.0.0 a 128.231.255.255 ). El número de sistema autónomo (ASN) es 3527.
| ASN | 3527 |
| IP que comienzan con | 128.231.0.0 |
| IP que termina con | 128.231.255.255 |
| ASN Nombre | National Institutes of Health |
| CDIR | 128.231.0.0/16 |
| IP numérica | |
| Registe | arin |
| Última actualización | 24/08/2017 |

| Código País | País | Región | Ciudad | Latitud | Longitud | Última actualización | |
| IP2Location | US | Estados Unidos | - | Bethesda | 38,9996 | -77,1551 | 2017-08-24 |
| MaxMind | US | Estados Unidos | - | Bethesda | 39,0032 | -77,1602 | 2017-08-24 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 128.231.4.0 | 2162623488 | 0 |
| 128.231.4.1 | 2162623489 | 0 |
| 128.231.4.2 | 2162623490 | 0 |
| 128.231.4.3 | 2162623491 | 0 |
| 128.231.4.4 | 2162623492 | 0 |
| 128.231.4.5 | 2162623493 | 0 |
| 128.231.4.6 | 2162623494 | 0 |
| 128.231.4.7 | 2162623495 | 0 |
| 128.231.4.8 | 2162623496 | 0 |
| 128.231.4.9 | 2162623497 | 0 |
| 128.231.4.10 | 2162623498 | 0 |
| 128.231.4.11 | 2162623499 | 0 |
| 128.231.4.12 | 2162623500 | 0 |
| 128.231.4.13 | 2162623501 | 0 |
| 128.231.4.14 | 2162623502 | 0 |
| 128.231.4.15 | 2162623503 | 0 |
| 128.231.4.16 | 2162623504 | 0 |
| 128.231.4.17 | 2162623505 | 0 |
| 128.231.4.18 | 2162623506 | 0 |
| 128.231.4.19 | 2162623507 | 0 |
| 128.231.4.20 | 2162623508 | 0 |
| 128.231.4.21 | 2162623509 | 0 |
| 128.231.4.22 | 2162623510 | 0 |
| 128.231.4.23 | 2162623511 | 0 |
| 128.231.4.24 | 2162623512 | 0 |
| 128.231.4.25 | 2162623513 | 0 |
| 128.231.4.26 | 2162623514 | 0 |
| 128.231.4.27 | 2162623515 | 0 |
| 128.231.4.28 | 2162623516 | 0 |
| 128.231.4.29 | 2162623517 | 0 |
| 128.231.4.30 | 2162623518 | 0 |
| 128.231.4.31 | 2162623519 | 0 |
| 128.231.4.32 | 2162623520 | 0 |
| 128.231.4.33 | 2162623521 | 0 |
| 128.231.4.34 | 2162623522 | 0 |
| 128.231.4.35 | 2162623523 | 0 |
| 128.231.4.36 | 2162623524 | 0 |
| 128.231.4.37 | 2162623525 | 0 |
| 128.231.4.38 | 2162623526 | 0 |
| 128.231.4.39 | 2162623527 | 0 |
| 128.231.4.40 | 2162623528 | 0 |
| 128.231.4.41 | 2162623529 | 0 |
| 128.231.4.42 | 2162623530 | 0 |
| 128.231.4.43 | 2162623531 | 0 |
| 128.231.4.44 | 2162623532 | 0 |
| 128.231.4.45 | 2162623533 | 0 |
| 128.231.4.46 | 2162623534 | 0 |
| 128.231.4.47 | 2162623535 | 0 |
| 128.231.4.48 | 2162623536 | 0 |
| 128.231.4.49 | 2162623537 | 0 |
| 128.231.4.50 | 2162623538 | 0 |
| 128.231.4.51 | 2162623539 | 0 |
| 128.231.4.52 | 2162623540 | 0 |
| 128.231.4.53 | 2162623541 | 0 |
| 128.231.4.54 | 2162623542 | 0 |
| 128.231.4.55 | 2162623543 | 0 |
| 128.231.4.56 | 2162623544 | 0 |
| 128.231.4.57 | 2162623545 | 0 |
| 128.231.4.58 | 2162623546 | 0 |
| 128.231.4.59 | 2162623547 | 0 |
| 128.231.4.60 | 2162623548 | 0 |
| 128.231.4.61 | 2162623549 | 0 |
| 128.231.4.62 | 2162623550 | 0 |
| 128.231.4.63 | 2162623551 | 0 |
| 128.231.4.64 | 2162623552 | 0 |
| 128.231.4.65 | 2162623553 | 0 |
| 128.231.4.66 | 2162623554 | 0 |
| 128.231.4.67 | 2162623555 | 0 |
| 128.231.4.68 | 2162623556 | 0 |
| 128.231.4.69 | 2162623557 | 0 |
| 128.231.4.70 | 2162623558 | 0 |
| 128.231.4.71 | 2162623559 | 0 |
| 128.231.4.72 | 2162623560 | 0 |
| 128.231.4.73 | 2162623561 | 0 |
| 128.231.4.74 | 2162623562 | 0 |
| 128.231.4.75 | 2162623563 | 0 |
| 128.231.4.76 | 2162623564 | 0 |
| 128.231.4.77 | 2162623565 | 0 |
| 128.231.4.78 | 2162623566 | 0 |
| 128.231.4.79 | 2162623567 | 0 |
| 128.231.4.80 | 2162623568 | 0 |
| 128.231.4.81 | 2162623569 | 0 |
| 128.231.4.82 | 2162623570 | 0 |
| 128.231.4.83 | 2162623571 | 0 |
| 128.231.4.84 | 2162623572 | 0 |
| 128.231.4.85 | 2162623573 | 0 |