L'indirizzo IP 133.81.37 è fornito da Research Organization of Information and Systems, National Institute of Informatics, che è di proprietà del CIDR (Classless Inter-Domain Routing) 133.81.0.0/16, IP tra 133.81.0.0 a 133.81.255.255 ). Il numero di sistema autonomo (ASN) è 2907.
| ASN | 2907 |
| IP inizia con | 133.81.0.0 |
| IP finale con | 133.81.255.255 |
| ASN Nome | Research Organization of Information and Systems, National Institute of Informatics |
| CDIR | 133.81.0.0/16 |
| IP numerico | |
| Registe | apnic |
| Ultimo aggiornamento | 29/01/2018 |

| Codice paese | Paese | Regione | Città | Latitude | Longitude | Ultimo aggiornamento | |
| IP2Location | JP | Japan | - | Tokyo | 35,6895 | 139,6917 | 2018-01-29 |
| MaxMind | JP | Japan | - | - | 35,69 | 139,69 | 2018-01-29 |
| Whois | JP | - | - | - | 138 | 36 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 133.81.37.0 | 2236687616 | 0 |
| 133.81.37.1 | 2236687617 | 0 |
| 133.81.37.2 | 2236687618 | 0 |
| 133.81.37.3 | 2236687619 | 0 |
| 133.81.37.4 | 2236687620 | 0 |
| 133.81.37.5 | 2236687621 | 0 |
| 133.81.37.6 | 2236687622 | 0 |
| 133.81.37.7 | 2236687623 | 0 |
| 133.81.37.8 | 2236687624 | 0 |
| 133.81.37.9 | 2236687625 | 0 |
| 133.81.37.10 | 2236687626 | 0 |
| 133.81.37.11 | 2236687627 | 0 |
| 133.81.37.12 | 2236687628 | 0 |
| 133.81.37.13 | 2236687629 | 0 |
| 133.81.37.14 | 2236687630 | 0 |
| 133.81.37.15 | 2236687631 | 0 |
| 133.81.37.16 | 2236687632 | 0 |
| 133.81.37.17 | 2236687633 | 0 |
| 133.81.37.18 | 2236687634 | 0 |
| 133.81.37.19 | 2236687635 | 0 |
| 133.81.37.20 | 2236687636 | 0 |
| 133.81.37.21 | 2236687637 | 0 |
| 133.81.37.22 | 2236687638 | 0 |
| 133.81.37.23 | 2236687639 | 0 |
| 133.81.37.24 | 2236687640 | 0 |
| 133.81.37.25 | 2236687641 | 0 |
| 133.81.37.26 | 2236687642 | 0 |
| 133.81.37.27 | 2236687643 | 0 |
| 133.81.37.28 | 2236687644 | 0 |
| 133.81.37.29 | 2236687645 | 0 |
| 133.81.37.30 | 2236687646 | 0 |
| 133.81.37.31 | 2236687647 | 0 |
| 133.81.37.32 | 2236687648 | 0 |
| 133.81.37.33 | 2236687649 | 0 |
| 133.81.37.34 | 2236687650 | 0 |
| 133.81.37.35 | 2236687651 | 0 |
| 133.81.37.36 | 2236687652 | 0 |
| 133.81.37.37 | 2236687653 | 0 |
| 133.81.37.38 | 2236687654 | 0 |
| 133.81.37.39 | 2236687655 | 0 |
| 133.81.37.40 | 2236687656 | 0 |
| 133.81.37.41 | 2236687657 | 0 |
| 133.81.37.42 | 2236687658 | 0 |
| 133.81.37.43 | 2236687659 | 0 |
| 133.81.37.44 | 2236687660 | 0 |
| 133.81.37.45 | 2236687661 | 0 |
| 133.81.37.46 | 2236687662 | 0 |
| 133.81.37.47 | 2236687663 | 0 |
| 133.81.37.48 | 2236687664 | 0 |
| 133.81.37.49 | 2236687665 | 0 |
| 133.81.37.50 | 2236687666 | 0 |
| 133.81.37.51 | 2236687667 | 0 |
| 133.81.37.52 | 2236687668 | 0 |
| 133.81.37.53 | 2236687669 | 0 |
| 133.81.37.54 | 2236687670 | 0 |
| 133.81.37.55 | 2236687671 | 0 |
| 133.81.37.56 | 2236687672 | 0 |
| 133.81.37.57 | 2236687673 | 0 |
| 133.81.37.58 | 2236687674 | 0 |
| 133.81.37.59 | 2236687675 | 0 |
| 133.81.37.60 | 2236687676 | 0 |
| 133.81.37.61 | 2236687677 | 0 |
| 133.81.37.62 | 2236687678 | 0 |
| 133.81.37.63 | 2236687679 | 0 |
| 133.81.37.64 | 2236687680 | 0 |
| 133.81.37.65 | 2236687681 | 0 |
| 133.81.37.66 | 2236687682 | 0 |
| 133.81.37.67 | 2236687683 | 0 |
| 133.81.37.68 | 2236687684 | 0 |
| 133.81.37.69 | 2236687685 | 0 |
| 133.81.37.70 | 2236687686 | 0 |
| 133.81.37.71 | 2236687687 | 0 |
| 133.81.37.72 | 2236687688 | 0 |
| 133.81.37.73 | 2236687689 | 0 |
| 133.81.37.74 | 2236687690 | 0 |
| 133.81.37.75 | 2236687691 | 0 |
| 133.81.37.76 | 2236687692 | 0 |
| 133.81.37.77 | 2236687693 | 0 |
| 133.81.37.78 | 2236687694 | 0 |
| 133.81.37.79 | 2236687695 | 0 |
| 133.81.37.80 | 2236687696 | 0 |
| 133.81.37.81 | 2236687697 | 0 |
| 133.81.37.82 | 2236687698 | 0 |
| 133.81.37.83 | 2236687699 | 0 |
| 133.81.37.84 | 2236687700 | 0 |
| 133.81.37.85 | 2236687701 | 0 |