Die IP-Adresse 103.72.21 erfolgt über National Internet Backbone, es hat gehören zu den GGDV (Classless Inter-Domain Routing) 103.72.56.0/22 (Bereich 103.72.56.0, 103.72.59.255). Die autonomen Systemnummer (ASN) ist 9829.
| ASN | 9829 |
| Ausgehend von IP | 103.72.56.0 |
| Beendigung durch IP | 103.72.59.255 |
| ASN-Namen | National Internet Backbone |
| GGDV | 103.72.56.0/22 |
| Numerische IP | |
| Registrierung | apnic |
| Letztes update | 24.09.2017 |

| Vorwahl des Landes | Land | Region | Stadt | Breitengrad | Länge | Letztes update | |
| IP2Location | CN | China | - | Hangzhou | 30,2937 | 120,1614 | 2017-09-23 |
| MaxMind | CN | China | - | Hangzhou | 30,2936 | 120,1614 | 2017-09-23 |
| Whois | IN | - | - | - | 79 | 21 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 103.72.21.0 | 1732777216 | 0 |
| 103.72.21.1 | 1732777217 | 0 |
| 103.72.21.2 | 1732777218 | 0 |
| 103.72.21.3 | 1732777219 | 0 |
| 103.72.21.4 | 1732777220 | 0 |
| 103.72.21.5 | 1732777221 | 0 |
| 103.72.21.6 | 1732777222 | 0 |
| 103.72.21.7 | 1732777223 | 0 |
| 103.72.21.8 | 1732777224 | 0 |
| 103.72.21.9 | 1732777225 | 0 |
| 103.72.21.10 | 1732777226 | 0 |
| 103.72.21.11 | 1732777227 | 0 |
| 103.72.21.12 | 1732777228 | 0 |
| 103.72.21.13 | 1732777229 | 0 |
| 103.72.21.14 | 1732777230 | 0 |
| 103.72.21.15 | 1732777231 | 0 |
| 103.72.21.16 | 1732777232 | 0 |
| 103.72.21.17 | 1732777233 | 0 |
| 103.72.21.18 | 1732777234 | 0 |
| 103.72.21.19 | 1732777235 | 0 |
| 103.72.21.20 | 1732777236 | 0 |
| 103.72.21.21 | 1732777237 | 0 |
| 103.72.21.22 | 1732777238 | 0 |
| 103.72.21.23 | 1732777239 | 0 |
| 103.72.21.24 | 1732777240 | 0 |
| 103.72.21.25 | 1732777241 | 0 |
| 103.72.21.26 | 1732777242 | 0 |
| 103.72.21.27 | 1732777243 | 0 |
| 103.72.21.28 | 1732777244 | 0 |
| 103.72.21.29 | 1732777245 | 0 |
| 103.72.21.30 | 1732777246 | 0 |
| 103.72.21.31 | 1732777247 | 0 |
| 103.72.21.32 | 1732777248 | 0 |
| 103.72.21.33 | 1732777249 | 0 |
| 103.72.21.34 | 1732777250 | 0 |
| 103.72.21.35 | 1732777251 | 0 |
| 103.72.21.36 | 1732777252 | 0 |
| 103.72.21.37 | 1732777253 | 0 |
| 103.72.21.38 | 1732777254 | 0 |
| 103.72.21.39 | 1732777255 | 0 |
| 103.72.21.40 | 1732777256 | 0 |
| 103.72.21.41 | 1732777257 | 0 |
| 103.72.21.42 | 1732777258 | 0 |
| 103.72.21.43 | 1732777259 | 0 |
| 103.72.21.44 | 1732777260 | 0 |
| 103.72.21.45 | 1732777261 | 0 |
| 103.72.21.46 | 1732777262 | 0 |
| 103.72.21.47 | 1732777263 | 0 |
| 103.72.21.48 | 1732777264 | 0 |
| 103.72.21.49 | 1732777265 | 0 |
| 103.72.21.50 | 1732777266 | 0 |
| 103.72.21.51 | 1732777267 | 0 |
| 103.72.21.52 | 1732777268 | 0 |
| 103.72.21.53 | 1732777269 | 0 |
| 103.72.21.54 | 1732777270 | 0 |
| 103.72.21.55 | 1732777271 | 0 |
| 103.72.21.56 | 1732777272 | 0 |
| 103.72.21.57 | 1732777273 | 0 |
| 103.72.21.58 | 1732777274 | 0 |
| 103.72.21.59 | 1732777275 | 0 |
| 103.72.21.60 | 1732777276 | 0 |
| 103.72.21.61 | 1732777277 | 0 |
| 103.72.21.62 | 1732777278 | 0 |
| 103.72.21.63 | 1732777279 | 0 |
| 103.72.21.64 | 1732777280 | 0 |
| 103.72.21.65 | 1732777281 | 0 |
| 103.72.21.66 | 1732777282 | 0 |
| 103.72.21.67 | 1732777283 | 0 |
| 103.72.21.68 | 1732777284 | 0 |
| 103.72.21.69 | 1732777285 | 0 |
| 103.72.21.70 | 1732777286 | 0 |
| 103.72.21.71 | 1732777287 | 0 |
| 103.72.21.72 | 1732777288 | 0 |
| 103.72.21.73 | 1732777289 | 0 |
| 103.72.21.74 | 1732777290 | 0 |
| 103.72.21.75 | 1732777291 | 0 |
| 103.72.21.76 | 1732777292 | 0 |
| 103.72.21.77 | 1732777293 | 0 |
| 103.72.21.78 | 1732777294 | 0 |
| 103.72.21.79 | 1732777295 | 0 |
| 103.72.21.80 | 1732777296 | 0 |
| 103.72.21.81 | 1732777297 | 0 |
| 103.72.21.82 | 1732777298 | 0 |
| 103.72.21.83 | 1732777299 | 0 |
| 103.72.21.84 | 1732777300 | 0 |
| 103.72.21.85 | 1732777301 | 0 |