L'indirizzo IP 21.76.81 è fornito da China Education and Research Network Center, che è di proprietà del CIDR (Classless Inter-Domain Routing) 22.30.204.0/23, IP tra 22.30.204.0 a 22.30.205.255 ). Il numero di sistema autonomo (ASN) è 4538.
| ASN | 4538 |
| IP inizia con | 22.30.204.0 |
| IP finale con | 22.30.205.255 |
| ASN Nome | China Education and Research Network Center |
| CDIR | 22.30.204.0/23 |
| IP numerico | |
| Registe | |
| Ultimo aggiornamento | 23/08/2018 |

| Codice paese | Paese | Regione | Città | Latitude | Longitude | Ultimo aggiornamento | |
| IP2Location | US | United States | - | Clovis | 34,4048 | -103,2052 | 2018-08-22 |
| MaxMind | US | United States | - | - | 37,751 | -97,822 | 2018-08-22 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.76.81.0 | 357323008 | 0 |
| 21.76.81.1 | 357323009 | 0 |
| 21.76.81.2 | 357323010 | 0 |
| 21.76.81.3 | 357323011 | 0 |
| 21.76.81.4 | 357323012 | 0 |
| 21.76.81.5 | 357323013 | 0 |
| 21.76.81.6 | 357323014 | 0 |
| 21.76.81.7 | 357323015 | 0 |
| 21.76.81.8 | 357323016 | 0 |
| 21.76.81.9 | 357323017 | 0 |
| 21.76.81.10 | 357323018 | 0 |
| 21.76.81.11 | 357323019 | 0 |
| 21.76.81.12 | 357323020 | 0 |
| 21.76.81.13 | 357323021 | 0 |
| 21.76.81.14 | 357323022 | 0 |
| 21.76.81.15 | 357323023 | 0 |
| 21.76.81.16 | 357323024 | 0 |
| 21.76.81.17 | 357323025 | 0 |
| 21.76.81.18 | 357323026 | 0 |
| 21.76.81.19 | 357323027 | 0 |
| 21.76.81.20 | 357323028 | 0 |
| 21.76.81.21 | 357323029 | 0 |
| 21.76.81.22 | 357323030 | 0 |
| 21.76.81.23 | 357323031 | 0 |
| 21.76.81.24 | 357323032 | 0 |
| 21.76.81.25 | 357323033 | 0 |
| 21.76.81.26 | 357323034 | 0 |
| 21.76.81.27 | 357323035 | 0 |
| 21.76.81.28 | 357323036 | 0 |
| 21.76.81.29 | 357323037 | 0 |
| 21.76.81.30 | 357323038 | 0 |
| 21.76.81.31 | 357323039 | 0 |
| 21.76.81.32 | 357323040 | 0 |
| 21.76.81.33 | 357323041 | 0 |
| 21.76.81.34 | 357323042 | 0 |
| 21.76.81.35 | 357323043 | 0 |
| 21.76.81.36 | 357323044 | 0 |
| 21.76.81.37 | 357323045 | 0 |
| 21.76.81.38 | 357323046 | 0 |
| 21.76.81.39 | 357323047 | 0 |
| 21.76.81.40 | 357323048 | 0 |
| 21.76.81.41 | 357323049 | 0 |
| 21.76.81.42 | 357323050 | 0 |
| 21.76.81.43 | 357323051 | 0 |
| 21.76.81.44 | 357323052 | 0 |
| 21.76.81.45 | 357323053 | 0 |
| 21.76.81.46 | 357323054 | 0 |
| 21.76.81.47 | 357323055 | 0 |
| 21.76.81.48 | 357323056 | 0 |
| 21.76.81.49 | 357323057 | 0 |
| 21.76.81.50 | 357323058 | 0 |
| 21.76.81.51 | 357323059 | 0 |
| 21.76.81.52 | 357323060 | 0 |
| 21.76.81.53 | 357323061 | 0 |
| 21.76.81.54 | 357323062 | 0 |
| 21.76.81.55 | 357323063 | 0 |
| 21.76.81.56 | 357323064 | 0 |
| 21.76.81.57 | 357323065 | 0 |
| 21.76.81.58 | 357323066 | 0 |
| 21.76.81.59 | 357323067 | 0 |
| 21.76.81.60 | 357323068 | 0 |
| 21.76.81.61 | 357323069 | 0 |
| 21.76.81.62 | 357323070 | 0 |
| 21.76.81.63 | 357323071 | 0 |
| 21.76.81.64 | 357323072 | 0 |
| 21.76.81.65 | 357323073 | 0 |
| 21.76.81.66 | 357323074 | 0 |
| 21.76.81.67 | 357323075 | 0 |
| 21.76.81.68 | 357323076 | 0 |
| 21.76.81.69 | 357323077 | 0 |
| 21.76.81.70 | 357323078 | 0 |
| 21.76.81.71 | 357323079 | 0 |
| 21.76.81.72 | 357323080 | 0 |
| 21.76.81.73 | 357323081 | 0 |
| 21.76.81.74 | 357323082 | 0 |
| 21.76.81.75 | 357323083 | 0 |
| 21.76.81.76 | 357323084 | 0 |
| 21.76.81.77 | 357323085 | 0 |
| 21.76.81.78 | 357323086 | 0 |
| 21.76.81.79 | 357323087 | 0 |
| 21.76.81.80 | 357323088 | 0 |
| 21.76.81.81 | 357323089 | 0 |
| 21.76.81.82 | 357323090 | 0 |
| 21.76.81.83 | 357323091 | 0 |
| 21.76.81.84 | 357323092 | 0 |
| 21.76.81.85 | 357323093 | 0 |