L'indirizzo IP 172.20.81 è fornito da AT&T Services, Inc., che è di proprietà del CIDR (Classless Inter-Domain Routing) 172.0.0.0/12, IP tra 172.0.0.0 a 172.15.255.255 ). Il numero di sistema autonomo (ASN) è 7018.
| ASN | 7018 |
| IP inizia con | 172.0.0.0 |
| IP finale con | 172.15.255.255 |
| ASN Nome | AT&T Services, Inc. |
| CDIR | 172.0.0.0/12 |
| IP numerico | |
| Registe | arin |
| Ultimo aggiornamento | 05/07/2017 |

| Codice paese | Paese | Regione | Città | Latitude | Longitude | Ultimo aggiornamento | |
| IP2Location | - | - | - | - | 0 | 0 | 2017-07-04 |
| MaxMind | US | United States | - | Valencia | 34,418 | -118,5662 | 2017-07-04 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 172.20.81.0 | 2887012608 | 0 |
| 172.20.81.1 | 2887012609 | 0 |
| 172.20.81.2 | 2887012610 | 0 |
| 172.20.81.3 | 2887012611 | 0 |
| 172.20.81.4 | 2887012612 | 0 |
| 172.20.81.5 | 2887012613 | 0 |
| 172.20.81.6 | 2887012614 | 0 |
| 172.20.81.7 | 2887012615 | 0 |
| 172.20.81.8 | 2887012616 | 0 |
| 172.20.81.9 | 2887012617 | 0 |
| 172.20.81.10 | 2887012618 | 0 |
| 172.20.81.11 | 2887012619 | 0 |
| 172.20.81.12 | 2887012620 | 0 |
| 172.20.81.13 | 2887012621 | 0 |
| 172.20.81.14 | 2887012622 | 0 |
| 172.20.81.15 | 2887012623 | 0 |
| 172.20.81.16 | 2887012624 | 0 |
| 172.20.81.17 | 2887012625 | 0 |
| 172.20.81.18 | 2887012626 | 0 |
| 172.20.81.19 | 2887012627 | 0 |
| 172.20.81.20 | 2887012628 | 0 |
| 172.20.81.21 | 2887012629 | 0 |
| 172.20.81.22 | 2887012630 | 0 |
| 172.20.81.23 | 2887012631 | 0 |
| 172.20.81.24 | 2887012632 | 0 |
| 172.20.81.25 | 2887012633 | 0 |
| 172.20.81.26 | 2887012634 | 0 |
| 172.20.81.27 | 2887012635 | 0 |
| 172.20.81.28 | 2887012636 | 0 |
| 172.20.81.29 | 2887012637 | 0 |
| 172.20.81.30 | 2887012638 | 0 |
| 172.20.81.31 | 2887012639 | 0 |
| 172.20.81.32 | 2887012640 | 0 |
| 172.20.81.33 | 2887012641 | 0 |
| 172.20.81.34 | 2887012642 | 0 |
| 172.20.81.35 | 2887012643 | 0 |
| 172.20.81.36 | 2887012644 | 0 |
| 172.20.81.37 | 2887012645 | 0 |
| 172.20.81.38 | 2887012646 | 0 |
| 172.20.81.39 | 2887012647 | 0 |
| 172.20.81.40 | 2887012648 | 0 |
| 172.20.81.41 | 2887012649 | 0 |
| 172.20.81.42 | 2887012650 | 0 |
| 172.20.81.43 | 2887012651 | 0 |
| 172.20.81.44 | 2887012652 | 0 |
| 172.20.81.45 | 2887012653 | 0 |
| 172.20.81.46 | 2887012654 | 0 |
| 172.20.81.47 | 2887012655 | 0 |
| 172.20.81.48 | 2887012656 | 0 |
| 172.20.81.49 | 2887012657 | 0 |
| 172.20.81.50 | 2887012658 | 0 |
| 172.20.81.51 | 2887012659 | 0 |
| 172.20.81.52 | 2887012660 | 0 |
| 172.20.81.53 | 2887012661 | 0 |
| 172.20.81.54 | 2887012662 | 0 |
| 172.20.81.55 | 2887012663 | 0 |
| 172.20.81.56 | 2887012664 | 0 |
| 172.20.81.57 | 2887012665 | 0 |
| 172.20.81.58 | 2887012666 | 0 |
| 172.20.81.59 | 2887012667 | 0 |
| 172.20.81.60 | 2887012668 | 0 |
| 172.20.81.61 | 2887012669 | 0 |
| 172.20.81.62 | 2887012670 | 0 |
| 172.20.81.63 | 2887012671 | 0 |
| 172.20.81.64 | 2887012672 | 0 |
| 172.20.81.65 | 2887012673 | 0 |
| 172.20.81.66 | 2887012674 | 0 |
| 172.20.81.67 | 2887012675 | 0 |
| 172.20.81.68 | 2887012676 | 0 |
| 172.20.81.69 | 2887012677 | 0 |
| 172.20.81.70 | 2887012678 | 0 |
| 172.20.81.71 | 2887012679 | 0 |
| 172.20.81.72 | 2887012680 | 0 |
| 172.20.81.73 | 2887012681 | 0 |
| 172.20.81.74 | 2887012682 | 0 |
| 172.20.81.75 | 2887012683 | 0 |
| 172.20.81.76 | 2887012684 | 0 |
| 172.20.81.77 | 2887012685 | 0 |
| 172.20.81.78 | 2887012686 | 0 |
| 172.20.81.79 | 2887012687 | 0 |
| 172.20.81.80 | 2887012688 | 0 |
| 172.20.81.81 | 2887012689 | 0 |
| 172.20.81.82 | 2887012690 | 0 |
| 172.20.81.83 | 2887012691 | 0 |
| 172.20.81.84 | 2887012692 | 0 |
| 172.20.81.85 | 2887012693 | 0 |