L'indirizzo IP 12.91.87 è fornito da AT&T Services, Inc., che è di proprietà del CIDR (Classless Inter-Domain Routing) 12.0.0.0/8, IP tra 12.0.0.0 a 12.255.255.255 ). Il numero di sistema autonomo (ASN) è 7018.
| ASN | 7018 |
| IP inizia con | 12.0.0.0 |
| IP finale con | 12.255.255.255 |
| ASN Nome | AT&T Services, Inc. |
| CDIR | 12.0.0.0/8 |
| IP numerico | |
| Registe | arin |
| Ultimo aggiornamento | 20/07/2017 |

| Codice paese | Paese | Regione | Città | Latitude | Longitude | Ultimo aggiornamento | |
| IP2Location | US | United States | - | Rockford | 42,2711 | -89,094 | 2017-07-20 |
| MaxMind | US | United States | - | - | 37,751 | -97,822 | 2017-07-20 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 12.91.87.0 | 207312640 | 0 |
| 12.91.87.1 | 207312641 | 0 |
| 12.91.87.2 | 207312642 | 0 |
| 12.91.87.3 | 207312643 | 0 |
| 12.91.87.4 | 207312644 | 0 |
| 12.91.87.5 | 207312645 | 0 |
| 12.91.87.6 | 207312646 | 0 |
| 12.91.87.7 | 207312647 | 0 |
| 12.91.87.8 | 207312648 | 0 |
| 12.91.87.9 | 207312649 | 0 |
| 12.91.87.10 | 207312650 | 0 |
| 12.91.87.11 | 207312651 | 0 |
| 12.91.87.12 | 207312652 | 0 |
| 12.91.87.13 | 207312653 | 0 |
| 12.91.87.14 | 207312654 | 0 |
| 12.91.87.15 | 207312655 | 0 |
| 12.91.87.16 | 207312656 | 0 |
| 12.91.87.17 | 207312657 | 0 |
| 12.91.87.18 | 207312658 | 0 |
| 12.91.87.19 | 207312659 | 0 |
| 12.91.87.20 | 207312660 | 0 |
| 12.91.87.21 | 207312661 | 0 |
| 12.91.87.22 | 207312662 | 0 |
| 12.91.87.23 | 207312663 | 0 |
| 12.91.87.24 | 207312664 | 0 |
| 12.91.87.25 | 207312665 | 0 |
| 12.91.87.26 | 207312666 | 0 |
| 12.91.87.27 | 207312667 | 0 |
| 12.91.87.28 | 207312668 | 0 |
| 12.91.87.29 | 207312669 | 0 |
| 12.91.87.30 | 207312670 | 0 |
| 12.91.87.31 | 207312671 | 0 |
| 12.91.87.32 | 207312672 | 0 |
| 12.91.87.33 | 207312673 | 0 |
| 12.91.87.34 | 207312674 | 0 |
| 12.91.87.35 | 207312675 | 0 |
| 12.91.87.36 | 207312676 | 0 |
| 12.91.87.37 | 207312677 | 0 |
| 12.91.87.38 | 207312678 | 0 |
| 12.91.87.39 | 207312679 | 0 |
| 12.91.87.40 | 207312680 | 0 |
| 12.91.87.41 | 207312681 | 0 |
| 12.91.87.42 | 207312682 | 0 |
| 12.91.87.43 | 207312683 | 0 |
| 12.91.87.44 | 207312684 | 0 |
| 12.91.87.45 | 207312685 | 0 |
| 12.91.87.46 | 207312686 | 0 |
| 12.91.87.47 | 207312687 | 0 |
| 12.91.87.48 | 207312688 | 0 |
| 12.91.87.49 | 207312689 | 0 |
| 12.91.87.50 | 207312690 | 0 |
| 12.91.87.51 | 207312691 | 0 |
| 12.91.87.52 | 207312692 | 0 |
| 12.91.87.53 | 207312693 | 0 |
| 12.91.87.54 | 207312694 | 0 |
| 12.91.87.55 | 207312695 | 0 |
| 12.91.87.56 | 207312696 | 0 |
| 12.91.87.57 | 207312697 | 0 |
| 12.91.87.58 | 207312698 | 0 |
| 12.91.87.59 | 207312699 | 0 |
| 12.91.87.60 | 207312700 | 0 |
| 12.91.87.61 | 207312701 | 0 |
| 12.91.87.62 | 207312702 | 0 |
| 12.91.87.63 | 207312703 | 0 |
| 12.91.87.64 | 207312704 | 0 |
| 12.91.87.65 | 207312705 | 0 |
| 12.91.87.66 | 207312706 | 0 |
| 12.91.87.67 | 207312707 | 0 |
| 12.91.87.68 | 207312708 | 0 |
| 12.91.87.69 | 207312709 | 0 |
| 12.91.87.70 | 207312710 | 0 |
| 12.91.87.71 | 207312711 | 0 |
| 12.91.87.72 | 207312712 | 0 |
| 12.91.87.73 | 207312713 | 0 |
| 12.91.87.74 | 207312714 | 0 |
| 12.91.87.75 | 207312715 | 0 |
| 12.91.87.76 | 207312716 | 0 |
| 12.91.87.77 | 207312717 | 0 |
| 12.91.87.78 | 207312718 | 0 |
| 12.91.87.79 | 207312719 | 0 |
| 12.91.87.80 | 207312720 | 0 |
| 12.91.87.81 | 207312721 | 0 |
| 12.91.87.82 | 207312722 | 0 |
| 12.91.87.83 | 207312723 | 0 |
| 12.91.87.84 | 207312724 | 0 |
| 12.91.87.85 | 207312725 | 0 |