The IP address 172.42.21 is provided by T-Mobile USA, Inc., it's belong to the CDIR (Classless Inter-Domain Routing) 172.32.0.0/11 (range 172.32.0.0 to 172.63.255.255). The autonomous system number (ASN) is 21928.
| ASN | 21928 |
| IP starting by | 172.32.0.0 |
| IP ending by | 172.63.255.255 |
| ASN Name | T-Mobile USA, Inc. |
| CDIR | 172.32.0.0/11 |
| Numerical IP | |
| Registry | arin |
| Last update | 05/10/2018 |

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | US | United States | - | Wake Forest | 35.9799 | -78.5097 | 2018-10-04 |
| MaxMind | US | United States | - | - | 37.751 | -97.822 | 2018-10-04 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 172.42.21.0 | 2888439040 | 0 |
| 172.42.21.1 | 2888439041 | 0 |
| 172.42.21.2 | 2888439042 | 0 |
| 172.42.21.3 | 2888439043 | 0 |
| 172.42.21.4 | 2888439044 | 0 |
| 172.42.21.5 | 2888439045 | 0 |
| 172.42.21.6 | 2888439046 | 0 |
| 172.42.21.7 | 2888439047 | 0 |
| 172.42.21.8 | 2888439048 | 0 |
| 172.42.21.9 | 2888439049 | 0 |
| 172.42.21.10 | 2888439050 | 0 |
| 172.42.21.11 | 2888439051 | 0 |
| 172.42.21.12 | 2888439052 | 0 |
| 172.42.21.13 | 2888439053 | 0 |
| 172.42.21.14 | 2888439054 | 0 |
| 172.42.21.15 | 2888439055 | 0 |
| 172.42.21.16 | 2888439056 | 0 |
| 172.42.21.17 | 2888439057 | 0 |
| 172.42.21.18 | 2888439058 | 0 |
| 172.42.21.19 | 2888439059 | 0 |
| 172.42.21.20 | 2888439060 | 0 |
| 172.42.21.21 | 2888439061 | 0 |
| 172.42.21.22 | 2888439062 | 0 |
| 172.42.21.23 | 2888439063 | 0 |
| 172.42.21.24 | 2888439064 | 0 |
| 172.42.21.25 | 2888439065 | 0 |
| 172.42.21.26 | 2888439066 | 0 |
| 172.42.21.27 | 2888439067 | 0 |
| 172.42.21.28 | 2888439068 | 0 |
| 172.42.21.29 | 2888439069 | 0 |
| 172.42.21.30 | 2888439070 | 0 |
| 172.42.21.31 | 2888439071 | 0 |
| 172.42.21.32 | 2888439072 | 0 |
| 172.42.21.33 | 2888439073 | 0 |
| 172.42.21.34 | 2888439074 | 0 |
| 172.42.21.35 | 2888439075 | 0 |
| 172.42.21.36 | 2888439076 | 0 |
| 172.42.21.37 | 2888439077 | 0 |
| 172.42.21.38 | 2888439078 | 0 |
| 172.42.21.39 | 2888439079 | 0 |
| 172.42.21.40 | 2888439080 | 0 |
| 172.42.21.41 | 2888439081 | 0 |
| 172.42.21.42 | 2888439082 | 0 |
| 172.42.21.43 | 2888439083 | 0 |
| 172.42.21.44 | 2888439084 | 0 |
| 172.42.21.45 | 2888439085 | 0 |
| 172.42.21.46 | 2888439086 | 0 |
| 172.42.21.47 | 2888439087 | 0 |
| 172.42.21.48 | 2888439088 | 0 |
| 172.42.21.49 | 2888439089 | 0 |
| 172.42.21.50 | 2888439090 | 0 |
| 172.42.21.51 | 2888439091 | 0 |
| 172.42.21.52 | 2888439092 | 0 |
| 172.42.21.53 | 2888439093 | 0 |
| 172.42.21.54 | 2888439094 | 0 |
| 172.42.21.55 | 2888439095 | 0 |
| 172.42.21.56 | 2888439096 | 0 |
| 172.42.21.57 | 2888439097 | 0 |
| 172.42.21.58 | 2888439098 | 0 |
| 172.42.21.59 | 2888439099 | 0 |
| 172.42.21.60 | 2888439100 | 0 |
| 172.42.21.61 | 2888439101 | 0 |
| 172.42.21.62 | 2888439102 | 0 |
| 172.42.21.63 | 2888439103 | 0 |
| 172.42.21.64 | 2888439104 | 0 |
| 172.42.21.65 | 2888439105 | 0 |
| 172.42.21.66 | 2888439106 | 0 |
| 172.42.21.67 | 2888439107 | 0 |
| 172.42.21.68 | 2888439108 | 0 |
| 172.42.21.69 | 2888439109 | 0 |
| 172.42.21.70 | 2888439110 | 0 |
| 172.42.21.71 | 2888439111 | 0 |
| 172.42.21.72 | 2888439112 | 0 |
| 172.42.21.73 | 2888439113 | 0 |
| 172.42.21.74 | 2888439114 | 0 |
| 172.42.21.75 | 2888439115 | 0 |
| 172.42.21.76 | 2888439116 | 0 |
| 172.42.21.77 | 2888439117 | 0 |
| 172.42.21.78 | 2888439118 | 0 |
| 172.42.21.79 | 2888439119 | 0 |
| 172.42.21.80 | 2888439120 | 0 |
| 172.42.21.81 | 2888439121 | 0 |
| 172.42.21.82 | 2888439122 | 0 |
| 172.42.21.83 | 2888439123 | 0 |
| 172.42.21.84 | 2888439124 | 0 |
| 172.42.21.85 | 2888439125 | 0 |