La dirección IP 172.4.21 es proporcionada por AT&T Services, Inc., que es propiedad de la CIDR (Classless Inter-Domain Routing) 172.0.0.0/12, IP entre 172.0.0.0 a 172.15.255.255 ). El número de sistema autónomo (ASN) es 7018.
| ASN | 7018 |
| IP que comienzan con | 172.0.0.0 |
| IP que termina con | 172.15.255.255 |
| ASN Nombre | AT&T Services, Inc. |
| CDIR | 172.0.0.0/12 |
| IP numérica | |
| Registe | arin |
| Última actualización | 11/09/2017 |

| Código País | País | Región | Ciudad | Latitud | Longitud | Última actualización | |
| IP2Location | US | Estados Unidos | - | Tulsa | 36,154 | -95,9928 | 2017-09-11 |
| MaxMind | US | Estados Unidos | - | Drumright | 35,9737 | -96,5544 | 2017-09-11 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 172.4.21.0 | 2885948672 | 0 |
| 172.4.21.1 | 2885948673 | 0 |
| 172.4.21.2 | 2885948674 | 0 |
| 172.4.21.3 | 2885948675 | 0 |
| 172.4.21.4 | 2885948676 | 0 |
| 172.4.21.5 | 2885948677 | 0 |
| 172.4.21.6 | 2885948678 | 0 |
| 172.4.21.7 | 2885948679 | 0 |
| 172.4.21.8 | 2885948680 | 0 |
| 172.4.21.9 | 2885948681 | 0 |
| 172.4.21.10 | 2885948682 | 0 |
| 172.4.21.11 | 2885948683 | 0 |
| 172.4.21.12 | 2885948684 | 0 |
| 172.4.21.13 | 2885948685 | 0 |
| 172.4.21.14 | 2885948686 | 0 |
| 172.4.21.15 | 2885948687 | 0 |
| 172.4.21.16 | 2885948688 | 0 |
| 172.4.21.17 | 2885948689 | 0 |
| 172.4.21.18 | 2885948690 | 0 |
| 172.4.21.19 | 2885948691 | 0 |
| 172.4.21.20 | 2885948692 | 0 |
| 172.4.21.21 | 2885948693 | 0 |
| 172.4.21.22 | 2885948694 | 0 |
| 172.4.21.23 | 2885948695 | 0 |
| 172.4.21.24 | 2885948696 | 0 |
| 172.4.21.25 | 2885948697 | 0 |
| 172.4.21.26 | 2885948698 | 0 |
| 172.4.21.27 | 2885948699 | 0 |
| 172.4.21.28 | 2885948700 | 0 |
| 172.4.21.29 | 2885948701 | 0 |
| 172.4.21.30 | 2885948702 | 0 |
| 172.4.21.31 | 2885948703 | 0 |
| 172.4.21.32 | 2885948704 | 0 |
| 172.4.21.33 | 2885948705 | 0 |
| 172.4.21.34 | 2885948706 | 0 |
| 172.4.21.35 | 2885948707 | 0 |
| 172.4.21.36 | 2885948708 | 0 |
| 172.4.21.37 | 2885948709 | 0 |
| 172.4.21.38 | 2885948710 | 0 |
| 172.4.21.39 | 2885948711 | 0 |
| 172.4.21.40 | 2885948712 | 0 |
| 172.4.21.41 | 2885948713 | 0 |
| 172.4.21.42 | 2885948714 | 0 |
| 172.4.21.43 | 2885948715 | 0 |
| 172.4.21.44 | 2885948716 | 0 |
| 172.4.21.45 | 2885948717 | 0 |
| 172.4.21.46 | 2885948718 | 0 |
| 172.4.21.47 | 2885948719 | 0 |
| 172.4.21.48 | 2885948720 | 0 |
| 172.4.21.49 | 2885948721 | 0 |
| 172.4.21.50 | 2885948722 | 0 |
| 172.4.21.51 | 2885948723 | 0 |
| 172.4.21.52 | 2885948724 | 0 |
| 172.4.21.53 | 2885948725 | 0 |
| 172.4.21.54 | 2885948726 | 0 |
| 172.4.21.55 | 2885948727 | 0 |
| 172.4.21.56 | 2885948728 | 0 |
| 172.4.21.57 | 2885948729 | 0 |
| 172.4.21.58 | 2885948730 | 0 |
| 172.4.21.59 | 2885948731 | 0 |
| 172.4.21.60 | 2885948732 | 0 |
| 172.4.21.61 | 2885948733 | 0 |
| 172.4.21.62 | 2885948734 | 0 |
| 172.4.21.63 | 2885948735 | 0 |
| 172.4.21.64 | 2885948736 | 0 |
| 172.4.21.65 | 2885948737 | 0 |
| 172.4.21.66 | 2885948738 | 0 |
| 172.4.21.67 | 2885948739 | 0 |
| 172.4.21.68 | 2885948740 | 0 |
| 172.4.21.69 | 2885948741 | 0 |
| 172.4.21.70 | 2885948742 | 0 |
| 172.4.21.71 | 2885948743 | 0 |
| 172.4.21.72 | 2885948744 | 0 |
| 172.4.21.73 | 2885948745 | 0 |
| 172.4.21.74 | 2885948746 | 0 |
| 172.4.21.75 | 2885948747 | 0 |
| 172.4.21.76 | 2885948748 | 0 |
| 172.4.21.77 | 2885948749 | 0 |
| 172.4.21.78 | 2885948750 | 0 |
| 172.4.21.79 | 2885948751 | 0 |
| 172.4.21.80 | 2885948752 | 0 |
| 172.4.21.81 | 2885948753 | 0 |
| 172.4.21.82 | 2885948754 | 0 |
| 172.4.21.83 | 2885948755 | 0 |
| 172.4.21.84 | 2885948756 | 0 |
| 172.4.21.85 | 2885948757 | 0 |
| IP | Numerical IP | DNS |
| 172.4.21.86 | 2885948758 | 0 |
| 172.4.21.87 | 2885948759 | 0 |
| 172.4.21.88 | 2885948760 | 0 |
| 172.4.21.89 | 2885948761 | 0 |
| 172.4.21.90 | 2885948762 | 0 |
| 172.4.21.91 | 2885948763 | 0 |
| 172.4.21.92 | 2885948764 | 0 |
| 172.4.21.93 | 2885948765 | 0 |
| 172.4.21.94 | 2885948766 | 0 |
| 172.4.21.95 | 2885948767 | 0 |
| 172.4.21.96 | 2885948768 | 0 |
| 172.4.21.97 | 2885948769 | 0 |
| 172.4.21.98 | 2885948770 | 0 |
| 172.4.21.99 | 2885948771 | 0 |
| 172.4.21.100 | 2885948772 | 0 |
| 172.4.21.101 | 2885948773 | 0 |
| 172.4.21.102 | 2885948774 | 0 |
| 172.4.21.103 | 2885948775 | 0 |
| 172.4.21.104 | 2885948776 | 0 |
| 172.4.21.105 | 2885948777 | 0 |
| 172.4.21.106 | 2885948778 | 0 |
| 172.4.21.107 | 2885948779 | 0 |
| 172.4.21.108 | 2885948780 | 0 |
| 172.4.21.109 | 2885948781 | 0 |
| 172.4.21.110 | 2885948782 | 0 |
| 172.4.21.111 | 2885948783 | 0 |
| 172.4.21.112 | 2885948784 | 0 |
| 172.4.21.113 | 2885948785 | 0 |
| 172.4.21.114 | 2885948786 | 0 |
| 172.4.21.115 | 2885948787 | 0 |
| 172.4.21.116 | 2885948788 | 0 |
| 172.4.21.117 | 2885948789 | 0 |
| 172.4.21.118 | 2885948790 | 0 |
| 172.4.21.119 | 2885948791 | 0 |
| 172.4.21.120 | 2885948792 | 0 |
| 172.4.21.121 | 2885948793 | 0 |
| 172.4.21.122 | 2885948794 | 0 |
| 172.4.21.123 | 2885948795 | 0 |
| 172.4.21.124 | 2885948796 | 0 |
| 172.4.21.125 | 2885948797 | 0 |
| 172.4.21.126 | 2885948798 | 0 |
| 172.4.21.127 | 2885948799 | 0 |
| 172.4.21.128 | 2885948800 | 0 |
| 172.4.21.129 | 2885948801 | 0 |
| 172.4.21.130 | 2885948802 | 0 |
| 172.4.21.131 | 2885948803 | 0 |
| 172.4.21.132 | 2885948804 | 0 |
| 172.4.21.133 | 2885948805 | 0 |
| 172.4.21.134 | 2885948806 | 0 |
| 172.4.21.135 | 2885948807 | 0 |
| 172.4.21.136 | 2885948808 | 0 |
| 172.4.21.137 | 2885948809 | 0 |
| 172.4.21.138 | 2885948810 | 0 |
| 172.4.21.139 | 2885948811 | 0 |
| 172.4.21.140 | 2885948812 | 0 |
| 172.4.21.141 | 2885948813 | 0 |
| 172.4.21.142 | 2885948814 | 0 |
| 172.4.21.143 | 2885948815 | 0 |
| 172.4.21.144 | 2885948816 | 0 |
| 172.4.21.145 | 2885948817 | 0 |
| 172.4.21.146 | 2885948818 | 0 |
| 172.4.21.147 | 2885948819 | 0 |
| 172.4.21.148 | 2885948820 | 0 |
| 172.4.21.149 | 2885948821 | 0 |
| 172.4.21.150 | 2885948822 | 0 |
| 172.4.21.151 | 2885948823 | 0 |
| 172.4.21.152 | 2885948824 | 0 |
| 172.4.21.153 | 2885948825 | 0 |
| 172.4.21.154 | 2885948826 | 0 |
| 172.4.21.155 | 2885948827 | 0 |
| 172.4.21.156 | 2885948828 | 0 |
| 172.4.21.157 | 2885948829 | 0 |
| 172.4.21.158 | 2885948830 | 0 |
| 172.4.21.159 | 2885948831 | 0 |
| 172.4.21.160 | 2885948832 | 0 |
| 172.4.21.161 | 2885948833 | 0 |
| 172.4.21.162 | 2885948834 | 0 |
| 172.4.21.163 | 2885948835 | 0 |
| 172.4.21.164 | 2885948836 | 0 |
| 172.4.21.165 | 2885948837 | 0 |
| 172.4.21.166 | 2885948838 | 0 |
| 172.4.21.167 | 2885948839 | 0 |
| 172.4.21.168 | 2885948840 | 0 |
| 172.4.21.169 | 2885948841 | 0 |
| 172.4.21.170 | 2885948842 | 0 |
| 172.4.21.171 | 2885948843 | 0 |
| IP | Numerical IP | DNS |
| 172.4.21.172 | 2885948844 | 0 |
| 172.4.21.173 | 2885948845 | 0 |
| 172.4.21.174 | 2885948846 | 0 |
| 172.4.21.175 | 2885948847 | 0 |
| 172.4.21.176 | 2885948848 | 0 |
| 172.4.21.177 | 2885948849 | 0 |
| 172.4.21.178 | 2885948850 | 0 |
| 172.4.21.179 | 2885948851 | 0 |
| 172.4.21.180 | 2885948852 | 0 |
| 172.4.21.181 | 2885948853 | 0 |
| 172.4.21.182 | 2885948854 | 0 |
| 172.4.21.183 | 2885948855 | 0 |
| 172.4.21.184 | 2885948856 | 0 |
| 172.4.21.185 | 2885948857 | 0 |
| 172.4.21.186 | 2885948858 | 0 |
| 172.4.21.187 | 2885948859 | 0 |
| 172.4.21.188 | 2885948860 | 0 |
| 172.4.21.189 | 2885948861 | 0 |
| 172.4.21.190 | 2885948862 | 0 |
| 172.4.21.191 | 2885948863 | 0 |
| 172.4.21.192 | 2885948864 | 0 |
| 172.4.21.193 | 2885948865 | 0 |
| 172.4.21.194 | 2885948866 | 0 |
| 172.4.21.195 | 2885948867 | 0 |
| 172.4.21.196 | 2885948868 | 0 |
| 172.4.21.197 | 2885948869 | 0 |
| 172.4.21.198 | 2885948870 | 0 |
| 172.4.21.199 | 2885948871 | 0 |
| 172.4.21.200 | 2885948872 | 0 |
| 172.4.21.201 | 2885948873 | 0 |
| 172.4.21.202 | 2885948874 | 0 |
| 172.4.21.203 | 2885948875 | 0 |
| 172.4.21.204 | 2885948876 | 0 |
| 172.4.21.205 | 2885948877 | 0 |
| 172.4.21.206 | 2885948878 | 0 |
| 172.4.21.207 | 2885948879 | 0 |
| 172.4.21.208 | 2885948880 | 0 |
| 172.4.21.209 | 2885948881 | 0 |
| 172.4.21.210 | 2885948882 | 0 |
| 172.4.21.211 | 2885948883 | 0 |
| 172.4.21.212 | 2885948884 | 0 |
| 172.4.21.213 | 2885948885 | 0 |
| 172.4.21.214 | 2885948886 | 0 |
| 172.4.21.215 | 2885948887 | 0 |
| 172.4.21.216 | 2885948888 | 0 |
| 172.4.21.217 | 2885948889 | 0 |
| 172.4.21.218 | 2885948890 | 0 |
| 172.4.21.219 | 2885948891 | 0 |
| 172.4.21.220 | 2885948892 | 0 |
| 172.4.21.221 | 2885948893 | 0 |
| 172.4.21.222 | 2885948894 | 0 |
| 172.4.21.223 | 2885948895 | 0 |
| 172.4.21.224 | 2885948896 | 0 |
| 172.4.21.225 | 2885948897 | 0 |
| 172.4.21.226 | 2885948898 | 0 |
| 172.4.21.227 | 2885948899 | 0 |
| 172.4.21.228 | 2885948900 | 0 |
| 172.4.21.229 | 2885948901 | 0 |
| 172.4.21.230 | 2885948902 | 0 |
| 172.4.21.231 | 2885948903 | 0 |
| 172.4.21.232 | 2885948904 | 0 |
| 172.4.21.233 | 2885948905 | 0 |
| 172.4.21.234 | 2885948906 | 0 |
| 172.4.21.235 | 2885948907 | 0 |
| 172.4.21.236 | 2885948908 | 0 |
| 172.4.21.237 | 2885948909 | 0 |
| 172.4.21.238 | 2885948910 | 0 |
| 172.4.21.239 | 2885948911 | 0 |
| 172.4.21.240 | 2885948912 | 0 |
| 172.4.21.241 | 2885948913 | 0 |
| 172.4.21.242 | 2885948914 | 0 |
| 172.4.21.243 | 2885948915 | 0 |
| 172.4.21.244 | 2885948916 | 0 |
| 172.4.21.245 | 2885948917 | 0 |
| 172.4.21.246 | 2885948918 | 0 |
| 172.4.21.247 | 2885948919 | 0 |
| 172.4.21.248 | 2885948920 | 0 |
| 172.4.21.249 | 2885948921 | 0 |
| 172.4.21.250 | 2885948922 | 0 |
| 172.4.21.251 | 2885948923 | 0 |
| 172.4.21.252 | 2885948924 | 0 |
| 172.4.21.253 | 2885948925 | 0 |
| 172.4.21.254 | 2885948926 | 0 |
| 172.4.21.255 | 2885948927 | 0 |