L'indirizzo IP 21.8.180 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 | 04/08/2017 |

| Codice paese | Paese | Regione | Città | Latitude | Longitude | Ultimo aggiornamento | |
| IP2Location | US | United States | - | Columbus | 39,9664 | -83,0128 | 2017-08-04 |
| MaxMind | US | United States | - | - | 37,751 | -97,822 | 2017-08-04 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.8.180.0 | 352891904 | 0 |
| 21.8.180.1 | 352891905 | 0 |
| 21.8.180.2 | 352891906 | 0 |
| 21.8.180.3 | 352891907 | 0 |
| 21.8.180.4 | 352891908 | 0 |
| 21.8.180.5 | 352891909 | 0 |
| 21.8.180.6 | 352891910 | 0 |
| 21.8.180.7 | 352891911 | 0 |
| 21.8.180.8 | 352891912 | 0 |
| 21.8.180.9 | 352891913 | 0 |
| 21.8.180.10 | 352891914 | 0 |
| 21.8.180.11 | 352891915 | 0 |
| 21.8.180.12 | 352891916 | 0 |
| 21.8.180.13 | 352891917 | 0 |
| 21.8.180.14 | 352891918 | 0 |
| 21.8.180.15 | 352891919 | 0 |
| 21.8.180.16 | 352891920 | 0 |
| 21.8.180.17 | 352891921 | 0 |
| 21.8.180.18 | 352891922 | 0 |
| 21.8.180.19 | 352891923 | 0 |
| 21.8.180.20 | 352891924 | 0 |
| 21.8.180.21 | 352891925 | 0 |
| 21.8.180.22 | 352891926 | 0 |
| 21.8.180.23 | 352891927 | 0 |
| 21.8.180.24 | 352891928 | 0 |
| 21.8.180.25 | 352891929 | 0 |
| 21.8.180.26 | 352891930 | 0 |
| 21.8.180.27 | 352891931 | 0 |
| 21.8.180.28 | 352891932 | 0 |
| 21.8.180.29 | 352891933 | 0 |
| 21.8.180.30 | 352891934 | 0 |
| 21.8.180.31 | 352891935 | 0 |
| 21.8.180.32 | 352891936 | 0 |
| 21.8.180.33 | 352891937 | 0 |
| 21.8.180.34 | 352891938 | 0 |
| 21.8.180.35 | 352891939 | 0 |
| 21.8.180.36 | 352891940 | 0 |
| 21.8.180.37 | 352891941 | 0 |
| 21.8.180.38 | 352891942 | 0 |
| 21.8.180.39 | 352891943 | 0 |
| 21.8.180.40 | 352891944 | 0 |
| 21.8.180.41 | 352891945 | 0 |
| 21.8.180.42 | 352891946 | 0 |
| 21.8.180.43 | 352891947 | 0 |
| 21.8.180.44 | 352891948 | 0 |
| 21.8.180.45 | 352891949 | 0 |
| 21.8.180.46 | 352891950 | 0 |
| 21.8.180.47 | 352891951 | 0 |
| 21.8.180.48 | 352891952 | 0 |
| 21.8.180.49 | 352891953 | 0 |
| 21.8.180.50 | 352891954 | 0 |
| 21.8.180.51 | 352891955 | 0 |
| 21.8.180.52 | 352891956 | 0 |
| 21.8.180.53 | 352891957 | 0 |
| 21.8.180.54 | 352891958 | 0 |
| 21.8.180.55 | 352891959 | 0 |
| 21.8.180.56 | 352891960 | 0 |
| 21.8.180.57 | 352891961 | 0 |
| 21.8.180.58 | 352891962 | 0 |
| 21.8.180.59 | 352891963 | 0 |
| 21.8.180.60 | 352891964 | 0 |
| 21.8.180.61 | 352891965 | 0 |
| 21.8.180.62 | 352891966 | 0 |
| 21.8.180.63 | 352891967 | 0 |
| 21.8.180.64 | 352891968 | 0 |
| 21.8.180.65 | 352891969 | 0 |
| 21.8.180.66 | 352891970 | 0 |
| 21.8.180.67 | 352891971 | 0 |
| 21.8.180.68 | 352891972 | 0 |
| 21.8.180.69 | 352891973 | 0 |
| 21.8.180.70 | 352891974 | 0 |
| 21.8.180.71 | 352891975 | 0 |
| 21.8.180.72 | 352891976 | 0 |
| 21.8.180.73 | 352891977 | 0 |
| 21.8.180.74 | 352891978 | 0 |
| 21.8.180.75 | 352891979 | 0 |
| 21.8.180.76 | 352891980 | 0 |
| 21.8.180.77 | 352891981 | 0 |
| 21.8.180.78 | 352891982 | 0 |
| 21.8.180.79 | 352891983 | 0 |
| 21.8.180.80 | 352891984 | 0 |
| 21.8.180.81 | 352891985 | 0 |
| 21.8.180.82 | 352891986 | 0 |
| 21.8.180.83 | 352891987 | 0 |
| 21.8.180.84 | 352891988 | 0 |
| 21.8.180.85 | 352891989 | 0 |