L'indirizzo IP 73.100.21 è fornito da Comcast Cable Communications, LLC, che è di proprietà del CIDR (Classless Inter-Domain Routing) 73.0.0.0/8, IP tra 73.0.0.0 a 73.255.255.255 ). Il numero di sistema autonomo (ASN) è 7922.
| ASN | 7922 |
| IP inizia con | 73.0.0.0 |
| IP finale con | 73.255.255.255 |
| ASN Nome | Comcast Cable Communications, LLC |
| CDIR | 73.0.0.0/8 |
| IP numerico | |
| Registe | arin |
| Ultimo aggiornamento | 25/02/2018 |

| Codice paese | Paese | Regione | Città | Latitude | Longitude | Ultimo aggiornamento | |
| IP2Location | US | United States | - | Springfield | 42,1015 | -72,5898 | 2018-02-25 |
| MaxMind | US | United States | - | Marblehead | 42,5002 | -70,8652 | 2018-02-25 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 73.100.21.0 | 1231295744 | 0 |
| 73.100.21.1 | 1231295745 | 0 |
| 73.100.21.2 | 1231295746 | 0 |
| 73.100.21.3 | 1231295747 | 0 |
| 73.100.21.4 | 1231295748 | 0 |
| 73.100.21.5 | 1231295749 | 0 |
| 73.100.21.6 | 1231295750 | 0 |
| 73.100.21.7 | 1231295751 | 0 |
| 73.100.21.8 | 1231295752 | 0 |
| 73.100.21.9 | 1231295753 | 0 |
| 73.100.21.10 | 1231295754 | 0 |
| 73.100.21.11 | 1231295755 | 0 |
| 73.100.21.12 | 1231295756 | 0 |
| 73.100.21.13 | 1231295757 | 0 |
| 73.100.21.14 | 1231295758 | 0 |
| 73.100.21.15 | 1231295759 | 0 |
| 73.100.21.16 | 1231295760 | 0 |
| 73.100.21.17 | 1231295761 | 0 |
| 73.100.21.18 | 1231295762 | 0 |
| 73.100.21.19 | 1231295763 | 0 |
| 73.100.21.20 | 1231295764 | 0 |
| 73.100.21.21 | 1231295765 | 0 |
| 73.100.21.22 | 1231295766 | 0 |
| 73.100.21.23 | 1231295767 | 0 |
| 73.100.21.24 | 1231295768 | 0 |
| 73.100.21.25 | 1231295769 | 0 |
| 73.100.21.26 | 1231295770 | 0 |
| 73.100.21.27 | 1231295771 | 0 |
| 73.100.21.28 | 1231295772 | 0 |
| 73.100.21.29 | 1231295773 | 0 |
| 73.100.21.30 | 1231295774 | 0 |
| 73.100.21.31 | 1231295775 | 0 |
| 73.100.21.32 | 1231295776 | 0 |
| 73.100.21.33 | 1231295777 | 0 |
| 73.100.21.34 | 1231295778 | 0 |
| 73.100.21.35 | 1231295779 | 0 |
| 73.100.21.36 | 1231295780 | 0 |
| 73.100.21.37 | 1231295781 | 0 |
| 73.100.21.38 | 1231295782 | 0 |
| 73.100.21.39 | 1231295783 | 0 |
| 73.100.21.40 | 1231295784 | 0 |
| 73.100.21.41 | 1231295785 | 0 |
| 73.100.21.42 | 1231295786 | 0 |
| 73.100.21.43 | 1231295787 | 0 |
| 73.100.21.44 | 1231295788 | 0 |
| 73.100.21.45 | 1231295789 | 0 |
| 73.100.21.46 | 1231295790 | 0 |
| 73.100.21.47 | 1231295791 | 0 |
| 73.100.21.48 | 1231295792 | 0 |
| 73.100.21.49 | 1231295793 | 0 |
| 73.100.21.50 | 1231295794 | 0 |
| 73.100.21.51 | 1231295795 | 0 |
| 73.100.21.52 | 1231295796 | 0 |
| 73.100.21.53 | 1231295797 | 0 |
| 73.100.21.54 | 1231295798 | 0 |
| 73.100.21.55 | 1231295799 | 0 |
| 73.100.21.56 | 1231295800 | 0 |
| 73.100.21.57 | 1231295801 | 0 |
| 73.100.21.58 | 1231295802 | 0 |
| 73.100.21.59 | 1231295803 | 0 |
| 73.100.21.60 | 1231295804 | 0 |
| 73.100.21.61 | 1231295805 | 0 |
| 73.100.21.62 | 1231295806 | 0 |
| 73.100.21.63 | 1231295807 | 0 |
| 73.100.21.64 | 1231295808 | 0 |
| 73.100.21.65 | 1231295809 | 0 |
| 73.100.21.66 | 1231295810 | 0 |
| 73.100.21.67 | 1231295811 | 0 |
| 73.100.21.68 | 1231295812 | 0 |
| 73.100.21.69 | 1231295813 | 0 |
| 73.100.21.70 | 1231295814 | 0 |
| 73.100.21.71 | 1231295815 | 0 |
| 73.100.21.72 | 1231295816 | 0 |
| 73.100.21.73 | 1231295817 | 0 |
| 73.100.21.74 | 1231295818 | 0 |
| 73.100.21.75 | 1231295819 | 0 |
| 73.100.21.76 | 1231295820 | 0 |
| 73.100.21.77 | 1231295821 | 0 |
| 73.100.21.78 | 1231295822 | 0 |
| 73.100.21.79 | 1231295823 | 0 |
| 73.100.21.80 | 1231295824 | 0 |
| 73.100.21.81 | 1231295825 | 0 |
| 73.100.21.82 | 1231295826 | 0 |
| 73.100.21.83 | 1231295827 | 0 |
| 73.100.21.84 | 1231295828 | 0 |
| 73.100.21.85 | 1231295829 | 0 |