La dirección IP 21.87.50 es proporcionada por China Education and Research Network Center, que es propiedad de la CIDR (Classless Inter-Domain Routing) 22.30.204.0/23, IP entre 22.30.204.0 a 22.30.205.255 ). El número de sistema autónomo (ASN) es 4538.
| ASN | 4538 |
| IP que comienzan con | 22.30.204.0 |
| IP que termina con | 22.30.205.255 |
| ASN Nombre | China Education and Research Network Center |
| CDIR | 22.30.204.0/23 |
| IP numérica | |
| Registe | |
| Última actualización | 04/12/2018 |

| Código País | País | Región | Ciudad | Latitud | Longitud | Última actualización | |
| IP2Location | US | Estados Unidos | - | Houston | 29,7633 | -95,3633 | 2018-12-04 |
| MaxMind | US | Estados Unidos | - | - | 37,751 | -97,822 | 2018-12-04 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.87.50.0 | 358035968 | 0 |
| 21.87.50.1 | 358035969 | 0 |
| 21.87.50.2 | 358035970 | 0 |
| 21.87.50.3 | 358035971 | 0 |
| 21.87.50.4 | 358035972 | 0 |
| 21.87.50.5 | 358035973 | 0 |
| 21.87.50.6 | 358035974 | 0 |
| 21.87.50.7 | 358035975 | 0 |
| 21.87.50.8 | 358035976 | 0 |
| 21.87.50.9 | 358035977 | 0 |
| 21.87.50.10 | 358035978 | 0 |
| 21.87.50.11 | 358035979 | 0 |
| 21.87.50.12 | 358035980 | 0 |
| 21.87.50.13 | 358035981 | 0 |
| 21.87.50.14 | 358035982 | 0 |
| 21.87.50.15 | 358035983 | 0 |
| 21.87.50.16 | 358035984 | 0 |
| 21.87.50.17 | 358035985 | 0 |
| 21.87.50.18 | 358035986 | 0 |
| 21.87.50.19 | 358035987 | 0 |
| 21.87.50.20 | 358035988 | 0 |
| 21.87.50.21 | 358035989 | 0 |
| 21.87.50.22 | 358035990 | 0 |
| 21.87.50.23 | 358035991 | 0 |
| 21.87.50.24 | 358035992 | 0 |
| 21.87.50.25 | 358035993 | 0 |
| 21.87.50.26 | 358035994 | 0 |
| 21.87.50.27 | 358035995 | 0 |
| 21.87.50.28 | 358035996 | 0 |
| 21.87.50.29 | 358035997 | 0 |
| 21.87.50.30 | 358035998 | 0 |
| 21.87.50.31 | 358035999 | 0 |
| 21.87.50.32 | 358036000 | 0 |
| 21.87.50.33 | 358036001 | 0 |
| 21.87.50.34 | 358036002 | 0 |
| 21.87.50.35 | 358036003 | 0 |
| 21.87.50.36 | 358036004 | 0 |
| 21.87.50.37 | 358036005 | 0 |
| 21.87.50.38 | 358036006 | 0 |
| 21.87.50.39 | 358036007 | 0 |
| 21.87.50.40 | 358036008 | 0 |
| 21.87.50.41 | 358036009 | 0 |
| 21.87.50.42 | 358036010 | 0 |
| 21.87.50.43 | 358036011 | 0 |
| 21.87.50.44 | 358036012 | 0 |
| 21.87.50.45 | 358036013 | 0 |
| 21.87.50.46 | 358036014 | 0 |
| 21.87.50.47 | 358036015 | 0 |
| 21.87.50.48 | 358036016 | 0 |
| 21.87.50.49 | 358036017 | 0 |
| 21.87.50.50 | 358036018 | 0 |
| 21.87.50.51 | 358036019 | 0 |
| 21.87.50.52 | 358036020 | 0 |
| 21.87.50.53 | 358036021 | 0 |
| 21.87.50.54 | 358036022 | 0 |
| 21.87.50.55 | 358036023 | 0 |
| 21.87.50.56 | 358036024 | 0 |
| 21.87.50.57 | 358036025 | 0 |
| 21.87.50.58 | 358036026 | 0 |
| 21.87.50.59 | 358036027 | 0 |
| 21.87.50.60 | 358036028 | 0 |
| 21.87.50.61 | 358036029 | 0 |
| 21.87.50.62 | 358036030 | 0 |
| 21.87.50.63 | 358036031 | 0 |
| 21.87.50.64 | 358036032 | 0 |
| 21.87.50.65 | 358036033 | 0 |
| 21.87.50.66 | 358036034 | 0 |
| 21.87.50.67 | 358036035 | 0 |
| 21.87.50.68 | 358036036 | 0 |
| 21.87.50.69 | 358036037 | 0 |
| 21.87.50.70 | 358036038 | 0 |
| 21.87.50.71 | 358036039 | 0 |
| 21.87.50.72 | 358036040 | 0 |
| 21.87.50.73 | 358036041 | 0 |
| 21.87.50.74 | 358036042 | 0 |
| 21.87.50.75 | 358036043 | 0 |
| 21.87.50.76 | 358036044 | 0 |
| 21.87.50.77 | 358036045 | 0 |
| 21.87.50.78 | 358036046 | 0 |
| 21.87.50.79 | 358036047 | 0 |
| 21.87.50.80 | 358036048 | 0 |
| 21.87.50.81 | 358036049 | 0 |
| 21.87.50.82 | 358036050 | 0 |
| 21.87.50.83 | 358036051 | 0 |
| 21.87.50.84 | 358036052 | 0 |
| 21.87.50.85 | 358036053 | 0 |